Patent Publication Number: US-2006007532-A1

Title: Catadioptric optical system and exposure apparatus having the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS  
      This is a Divisional of U.S. patent application Ser. No. 10/787,809 filed Feb. 25, 2004 (of the same inventors, and now allowed) which is a Continuation of U.S. patent application Ser. No. 10/079,964, now U.S. Pat. No. 6,717,722, filed on Feb. 20, 2002, of the same inventors. The present Divisional Application claims the benefits of U.S. patent application Ser. No. 10/787,809, now allowed, which claims the benefit of Ser. No. 10/079,964 under 35 USC 120. U.S. patent application Ser. No. 10/079,964 is a Divisional Application of U.S. patent application Ser. No. 09/364,382 filed on Jul. 29, 1999 (now U.S. Pat. No. 6,496,306), of the same inventors, which claims benefit of U.S. Provisional Application 60/094,579 under 35 USC 119(e). U.S. Provisional Application 60/094,579 was filed on Jul. 29, 1998. 
    
    
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT  
      Not applicable.  
     INCORPORATION BY REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISC  
      Not applicable.  
     BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      The present invention relates to a projection exposure lens in a projection exposure apparatus such as a wafer scanner or a wafer stepper used to manufacture semiconductor elements or other microstructure devices by photolithography and, more particularly, to a catadioptric projection optical lens with an object side catadioptric system, an intermediate image and a refractive lens system for use in such a projection exposure apparatus.  
      2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 1.98  
      U.S. Pat. No. 4,779,966 to Friedman gives an early example of such a lens, however the catadioptric system being arranged on the image side. Its development starting from the principle of a Schupmann achromat is described. It is an issue of this patent to avoid a second lens material, consequently all lenses are of fused silica. Light source is not specified, band width is limited to 1 nm.  
      U.S. Pat. No. 5,052,763 to Singh (EP 0 475 020) is another example. Here it is relevant that odd aberrations are substantially corrected separately by each subsystem, wherefore it is preferred that the catadioptric system is a 1:1 system and no lens is arranged between the object and the first deflecting mirror. A shell is placed between the first deflecting mirror and the concave mirror in a position more near to the deflecting mirror. All examples provide only fused silica lenses. NA is extended to 0.7 and a 248 nm excimer laser or others are proposed. Line narrowing of the laser is proposed as sufficient to avoid chromatic correction by use of different lens materials.  
      U.S. Pat. No. 5,691,802 to Takahashi is another example, where a first optical element group having positive refracting power between the first deflecting mirror and the concave mirror is requested. This is to reduce the diameter of the mirror, and therefore this positive lens is located near the first deflecting mirror. All examples show a great number of CaF 2  lenses.  
      EP 0 736 789 A to Takahashi is an example, where it is requested that between the first deflecting mirror and the concave mirror three lens groups are arranged, with plus minus plus refractive power, also with the aim of reducing the diameter of the concave mirror. Therefore, the first positive lens is located rather near to the first reflecting mirror. Also many CaF 2  lenses are used for achromatization.  
      DE 197 26 058 A to Omura describes a system where the catadioptric system has a reduction ratio of 0.75&lt;/β 1 /&lt;0.95 and a certain relation for the geometry of this system is fulfilled as well. Also many CaF 2  lenses are used for achromatization.  
      For purely refractive lenses of microlithography projection exposure system a lens design where the light beam is twice widened strongly is well know, see e.g. Glatzel, E., Zeiss-Information 26 (1981), No. 92 pages 8-13. A recent example of such a projection lens with +−+−+ lens groups is given in EP 0 770 895 to Matsuzawa and Suenaga.  
      The refractive partial objectives of the known catadioptric lenses of the generic type of the invention, however show much simpler constructions.  
      The contents of these documents are incorporated herein by reference. They give background and circumstances of the system according to the invention.  
      The contents of these documents are incorporated herein by reference. They given background and circumstances of the system according to the invention.  
     BRIEF SUMMARY OF THE INVENTION  
      It is an object of the present invention to obtain a catadioptric optical system of new construction principles allowing for large numerical aperture, large image field, sufficient laser bandwidth, solid and stable construction, which takes into account the present limitations on availability of CaF 2  in quantity and quality. This holds for a DUV projection lens and gives the basis for a one material only lens for VUV (157 nm).  
      In order to achieve the above object, according to the present invention, there is provided a projection exposure lens according to the invention.  
      Advantageous versions are obtained when including features of the invention.  
      An advantageous projection exposure apparatus of claim  29  is obtained by incorporating a projection exposure lens according to the invention into a known apparatus.  
      A method of producing microstructured devices by lithography according to the invention is characterized by the use of a projection exposure apparatus according to the invention.  
      The present invention will be more fully understood from the detailed description given hereinbelow and the accompanying drawings, which are given by way of illustration only and are not to be considered as limiting the present invention. Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will be apparent to those skilled in the art from this detailed description. 
    
    
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)  
       FIG. 1  is a view showing the arrangement of an exposure apparatus to which a catadioptric optical system according to the present invention can be applied;  
       FIG. 2  is a section view of the lens arrangement of a first embodiment;  
       FIG. 3  is a section view of the lens arrangement of a second embodiment;  
       FIG. 4  is a section view of the lens arrangement of a third embodiment;  
       FIG. 5  is a section view of the lens arrangement of a fourth embodiment;  
       FIG. 6   a  is a section view of the lens arrangement of a fifth embodiment;  
       FIG. 6   b  is a representation of an imaging error of the fifth embodiment;  
       FIG. 7  is a schematic section view of part of the lens arrangement of a sixth embodiment. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
      The projection exposure apparatus as schematically shown in  FIG. 1  includes an excimer laser light source  1  with an arrangement  11  moderately narrowing bandwidth. An illumination system  2  produces a large field, sharply limited and illuminated very homogeneously, which matches the telecentricity requirements of the projection lens, and with an illumination mode to choice. Such mode may be conventional illumination of variable degree of coherence, annular or quadrupole illumination.  
      A mask  3  is displaced in the illuminated area by a mask holding and handling system  31 , which includes the scanning drive in case of a wafer scanner projection exposure apparatus. Subsequently follows the catadioptric projection exposure lens  4 , according to the invention to be described in detail subsequently.  
      This lens  4  produces a reduced scale image of the mask  3  on a wafer  5 . The wafer  5  is held, handled and eventually scanned by unit  51 .  
      All systems are controlled by control unit  6 . Such unit and the method of its use is known in the art of microlithographic projection exposure.  
      However, for exposure of structures in the regime of about 0.2 μm and less resolution at high throughput there is a demand for various projection exposure lenses capable to be operated at 193 nm, eventually also at 248 nm or 157 nm excimer laser wavelengths with reasonably available bandwidths (e.g. 15 pm at 193 nm), at high image side numerical aperature of 0.65 to 0.8 or more with reasonably large rectangular or circular scanning image fields of e.g. 7×20 to 10×30 mm 2 .  
      Catadioptric systems of the type cited above are in principle suitable for this.  
      However, according to the invention a number of measures and features have been found to improve these systems.  
      The example shown in the sectional view of  FIG. 2  has the lens data given in Table 1 and makes use only of fused silica lenses. As only one-lens material is used, this design can easily be adapted for other wavelengths as 248 nm or 157 nm.  
      The intermediate image IMI is freely accessible, so that it is easily possible to insert a field stops. The aperture stop AP is located between lens surfaces  239  and  240  and is also well accessible.  
      The deflecting mirrors DM 1  and DM 2  in the catadioptric system CS are defined in their geometry by the demands of separation of the light beams to and from the concave mirror  209  and of clearance from lens  201 ,  202 . It is advantageous that the mirror angle of mirror DM 1  differs from 45°, such that the beam deflection angle is greater than 90°. This helps to ascertain large free working distance as well as wide clearance for the light beam relative to the first lens element  201 ,  202  and also gives full clearance of the lens barrel of the catadioptric systems CS from the object plane  0 .  
      The arrangement of the two deflection mirrors DM 1 , DM 2  allows for a straight optical axis and parallel situation of origin plane  0  and image plane IM, i.e. mask and wafer are parallel and can easily be scanned. However, one of the deflecting mirrors DM 1 , DM 2  can be abandoned or eventually be replaced by a deflecting mirror in the refractive lens RL, e.g. in the air space between lens surfaces  225  and  226 . It is also clear the deflecting mirrors can be replaced by other deflecting optical elements (as e.g. the prism in embodiment 6 or others).  
      A moderate positive lens  201 ,  202  is placed near the origin plane  0  in the single pass beam area. Its focal length is approximately equal to its distance from the concave mirror  209 . This makes that the concave mirror  209  is situated in a pupil plane and thus the diameter required is minimized.  
      A second positive lens is located in the doubly passed area between the deflecting mirrors DM 1 , DM 2  and the concave mirror  209 . As the production conditions of concave mirrors of 200 mm to 300 mm diameter give no strong preference to smaller units—in contrast to lenses, namely such made from CaF 2 , where inhomogeneties etc. given strong limitations—there is no need to use this positive lens  203 ,  204  for reduction of the radius of the concave mirror  209 . It is located nearer to the concave mirror  209  than to the first reflection mirror DM 1  at a location where it serves best to minimize imaging errors.  
      The two negative menisci  205 ,  206 ;  207 ,  208  cooperate with the concave mirror  209  in a known manner, giving increased angles of incidence and stronger curvature, thus stronger correcting influence of the concave mirror  209 .  
      It is significant, that the number of lenses in the doubly passed area of the catadoptric system CS is restricted to three, as here every lens counts doubly with respect to system energy transmission and wavefront quality degradation—without giving more degrees of freedom for correction.  
      Of a total reduction ratio of β=0.25 the catadioptric system CS delivers its part of β cs =1.008.  
      At the intermediate image plane IMI preferably a field stop FS is inserted, which reduces stray light favorably.  
      The refractive lens RL following to the intermediate image IMI is of more elaborate design than usual in the art. It is more of a quality as fully refractive projection exposure lenses of recent developments tend to be.  
      One can see that the five lens group design known from sophisticated refractive microlithography lens designs featuring two waists and three bellies with +−+−+ lens groups in this sequence is adopted. Though the first two bellies (lens surfaces  210  to  219 ,  224  to  227 ) are not very strongly expressed, the two waists W 1 , W 2  are significantly established, each by a pair of negative menisci  220 ,  221 ;  222 ,  223  and  228 ,  229 ;  230 ,  231 , whose convex surfaces face outwardly.  
      It is known that these lens groups at the waists W 1 , W 2  as the others can be developed further by incorporating more lenses, e.g. to increase the numerical aperture or the image area.  
      From another point of view, the refractive lens RL is composed of a field lens group (lens surfaces  210  to  219 ) of positive power for turning the diverging chief ray into a converging chief ray, an image side positive focusing lens group (lens surfaces  232  to  251 ), which generates the required large numerical aperture, and intermediately arranged lens elements, which correct imaging errors, especially including sets of oppositely arranged negative menisci (w 1 , w 2 ).  
      The −+ power doublets with surfaces  235  to  238  and  239  to  242  are the key to the wide spectral bandwidth at good correction of the chromatic variation in spherical aberration, which is the main residual aberration in these designs. It was found that the alternative arrangement there of +− power doublets gives much worse chromatic variation of spherical aberration. Here a value of 0.35 μm is obtained at 15 pm laser bandwidth.  
      This example of  FIG. 2  is suitable for printing microstructures at a resolution of less than 0.2 μm over an image field of 30×7 mm 2  rectangle at 6 mm off axis, with an excimer laser source of 0.015 nm bandwidth.  
       FIG. 3  and Table 2 show a design variant. The catadioptric system CS remains very similar, however its reduction ratio now is less than unity at β cs =0.944.  
      In the refractive lens the second lens  212 ,  213  of  FIG. 2  is abandoned, while the thick negative lens  245 ,  246  is split into three units  342 ,  343 ;  344 ,  345 ;  346 ,  347 .  
      Also two lenses now are made of CaF 2 , namely the elements with the surfaces  342 ,  343  and  348 ,  349 . Related to the diameter of the greatest lens  330 ,  331  of ca. 250 mm their diameters of ca. 205 mm and approx. 165 mm are less than 0.81 fold and 0.67 fold. Therefore, their dimension is not too great and effective production is ascertained.  
      Also they are arranged in the converging light beam in the fifth lens group after the third belly, near the image plane. They help with achromatization. The other features are quite similar as those of the example of  FIG. 2 , including e.g. the −+ power doublets  332  to  339 .  
       FIG. 4  and table 3 show another example of a catadioptric lens according to the invention.  
      Now, the catadioptric system CS shows a major revision, as all lenses in the doubly passed region are combined into a single lens group next to the concave mirror  411 . It includes the positive lens  403 ,  404  and three negative lenses  405  to  410 . Change from two to three such negative lenses provides smoother increase of beam angles and thus optimizes correction. Thus, the construction of the lens barrel of the catadioptric system CS is simplified. The lenses  403  to  410  and the mirror  411  can be mounted in a compact unit of conventional construction as known from refractive projection exposure lenses. The long distance to the deflecting mirrors DM 1 , DM 2  can be bridged by a thermally stable tubular body, e.g. made of fiber compound, glass ceramics or a bi-metal compound structure.  
      The positive lens  403 ,  404  now is made of fluorite (ca. 200 mm dia.), thus helping in achromatization. It is significant for the invention, that at most three to four lenses in total made of a second material are sufficient to provide good achromatization in this basic design.  
      The reduction ratio of the catadioptric system is β cs =0.931. The refractive lens system is constructed very similar to the one of table 2.  
      A fourth embodiment is given in  FIG. 5  and table 4.  
      Now the catadioptric system CS again is free of any CaF 2  element. Its principal construction with a compact unit of one positive ( 503 ,  504 ), three negative lenses ( 505 - 510 ) and the concave mirror  511  in one compact unit remains the same as in the third embodiment. The reduction ratio β cs  is 0.961 in the most preferred range.  
      Also the refractive lens RL is of the same overall design as the before mentioned examples. However, the use of CaF 2  lens elements has a novel character. While lens element  544 ,  545  in a known manner serves for achromatization, the reason for use of CaF 2  in the two lenses  552 ,  553 ;  554 ,  555  next to the image plane IM is another one.  
      The reason for use of CaF 2  here is the reduction of the “compaction” degradation effect which is rather strong with fused silica lenses at high light intensity and strong asymmetry (caused by narrow scanning image field) at 193 nm wavelength, but far less with CaF 2  lenses (or other crystalline material).  
      With an overall length—object  0  to image IM—of 1455 mm, a deviation off the axis of the concave mirror  511  of 590 mm, diameter of the concave mirror  511  of 250 mm, greatest lens diameter in the refractive lens system RL of 240 mm (at lens  534 ,  535 ) and diameters of the CaF 2  lenses of 195 mm ( 544 ,  545 ), 135 mm ( 552 ,  553 ) and 85 mm ( 554 ,  555 ) the dimensions of this construction are very acceptable. At Lambda=193 nm, 15 pm band width, reduction ratio 0.25, numerical aperture of 0.7, an image field of 26×9 mm 2  rectangular is imaged at a resolution of better than 0.20 μm.  
      A fifth embodiment is given in  FIG. 6   a  and table 5. This is distinguished from embodiment 4 in that only the last two lenses C 1 , C 2  ( 654 ,  655 ;  656 ,  657 ) are made of CaF 2  with the aim of reduction of long-time degradation by compaction of fused silica under 193 nm radiation, but no CaF 2  is used for the purpose of achromatization.  
      The catadioptric system CS consists of a field lens  601 ,  602  with a focal length f′ related to its distance B to the concave mirror by f′/B=1.004.  
      Deflecting mirror DM 1  deflects the optical axis. Its normal is tilted with respect to the optical axis by 50°. This gives better beam clearance from the field lens  601 ,  602  than the normal 45°.  
      The positive lens  603 ,  604  is combined with three negative lenses  605 - 610  and the concave mirror  611  into a compact unit. The distance DM 1 - 603  is 432 MM, compared to the distance DM 1 - 611  to the concave mirror of 597 mm; this is 72%.  
      The reduction ratio of the catadioptric system β cs 0.9608 lies in a preferable range near unity, where the achromatizing effect of the concave mirror is best exploited as well as other imaging errors (e.g. curvature of field) are kept small. The positive effect on Petzval sum is very good.  
      However, the concept of odd aberrations correction (Singh loc. cit.) is not adapted: At the intermediate image plane IMI the values of coma −0.1724—and distortion—−0.0833—by far exceed good correction values, while at the final image plane IM coma (−0.00098) and distortion (−0.000115) are very well corrected, as other typical errors are.  
      A field stop FS at the intermediate image plane IMI advantageously cuts off disturbing stray light.  
      According to the invention the catadioptric system is designed with very few elements in compact arrangement for its function is focused on the implementation of the achromatizing and Petzval sum influence of the concave mirror  611 .  
      Detailed correction is the realm of the refractive lens system RL. This is composed of a field lens group FL (surfaces  612  to  621 ) and a focusing lens group FG (surfaces  634  to  657 ). Correcting lens elements are inserted in between, including two pairs of opposing negative menisci  622 - 625  and  630 - 633 . These form two beam waists W 1 , W 2 . Thus the +−+−+ five lens group design known from sophisticated refractive projection exposure lenses is established.  
      The focusing lens group FG hosts the system aperture AP as well as two −+ power lens groups PG 1  and PG 2  with the above-mentioned advantages.  
      No achromatizing CaF 2  lens is provided, but as in embodiment 4 the two lenses C 1 , C 2  ( 654 - 657 ) located next the image plane IM are made of CaF 2  for the above mentioned reason of avoidance of compaction.  
      At a length of  0 -IM of 1400 mm and a sideward deviation of 590 mm to the concave mirror  611 , the diameter of the concave mirror  611  (and the neighboring lens  609 ,  610 ) is limited to 252 mm, while the largest lens  636 ,  637  of the refractive lens system RL has a diameter of 240 mm and the CaF 2  lenses have only 130 mm (C 1 ) and 85 mm (C 2 ) diameter. Thus requirements of production to avoid extreme diameters are well fulfilled.  
       FIG. 6   b  shows the longitudinal spherical aberration and its chromatic variation at Lambda=193. 30 nm±0.015 nm for this embodiment 5, which as before mentioned is the remnant imaging error limiting the performance of this system.  
      It can be seen that with a moderately narrowed excimer laser source of Lambda=193.3 nm with 15 pm band width a rectangular field of 26×9 mm can be imaged at a resolution of better than 0.2 μm.  
      A sixth embodiment is shown in  FIG. 7  and table 6. Here, a deflecting prism DP is inserted for deflecting the light path towards the concave mirror  711 .  
      Since the light rays inside the prism DP spread apart less than when they are in air (or nitrogen or helium), the field size can be increased by a certain amount without introducing any vignetting of the light rays by the prism edges. The importance of this design modification increases at higher numerical Aperture. Vignetting of rays limits how large a field size can be handled by the folding elements, and even a relatively small increase in field size is very desirable—for a variety of reasons, including the possibility of shrinking all lens diameters for a given field required. It turns out not to be relevant to try this for the second flat mirror DM 2 . While  FIG. 7  schematically shows the deflecting mirror region, exemplary lens data for a full system are given in table 6. This Prism arrangement can also help to extend the free working distance or to use other mirror angles (e.g. 45°).  
      Embodiment 7, for which design data are given in table 7, shows the possible extension of the image with side numerical aperture well beyond the 0.7 value of the other examples. The value of NA=0.8 is not yet limiting to this type of lens. The overall construction is as given in the other embodiments, thus no extra drawing is needed for explanation.  
      Embodiment 8 with lens data of table 8 gives a pure CaF 2  deign for 157 nm wavelength as an example showing the possibilities of the inventive design for use with VUV wavelengths. The overall construction is very much like  FIG. 6   a.    
      Other combinations of claimed features than explicitly described above are within a scope of the invention.  
      The possibilities of the Schupman achromat for achromatization with only one lens material are fully exploited in embodiments 1 and 8. In consequence, this embodiment 8 presents the first 157 nm design of the Schupman achromat suitable for VUV lithography. Insertion of aspheres and consequent reduction of number and thickness of lenses will further optimize this.  
      A new aspect of using a second material in a lens for avoiding compaction is given in embodiments 4 to 7.  
      To simplify achromatization by use of a second material very few elements made from this are sufficient as embodiments 3, 4, 6 and 7 show.  
      Preferably the lenses between the deflecting elements and the concave mirror are arranged in a compact unit with the latter as in embodiments 3 to 8. All lenses are more distant from the deflecting elements than from the concave mirror, their minimal distances do not exceed their maximum thicknesses (both taken over the diameter), or the length of the compact unit does not exceed its diameter, at least not by more than 50%. The sophisticated design of the refractive lens system as presented allows for good correction at increased image side numerical apertures in the 0.65 to 0.85 range.  
      While examples are given for the scanning scheme of exposure, the invention as well is useful with step-and-repeat or stitching. Stitching allows for specifically smaller optics.  
               TABLE 1                          Lambda = 193.3 nm  β = 0.25  NA = 0.7                                     No.   Radius   Thickness   Glass                                                  0   Infinity   40.000               201   433.823   20.000   SIO2           202   Infinity   76.000           DM1   Infinity   286.798   Angle 50.5°           203   371.257   25.000   SIO2           204   855.824   216.212           205   −242.813   15.000   SIO2           206   −957.702   29.987           207   −191.563   15.000   SIO2           208   −420.744   12.000           209   267.741       Reflector           (203)       281.798           DM2   Infinity   141.534   Angle 39.5°           210   341.605   45.000   SIO2           211   −302.390   0.266           212   −314.725   15.000   SIO2           213   −535.921   21.847           214   −293.712   15.000   SIO2           215   242.074   2.808           216   253.649   50.000   SIO2           217   −418.716   1.000           218   387.621   32.000   SIO2           219   Infinity   23.536           220   338.439   20.000   SIO2           221   −180.073   56.252           222   −200.452   17.000   SIO2           223   −406.872   1.000           224   830.485   35.000   SIO2           225   −406.246   137.396           226   564.466   32.000   SIO2           227   −1292.800   1.000           228   288.764   22.000   SIO2           229   169.297   57.016           230   −189.642   28.572   SIO2           231   −398.135   81.777           232   −476.268   32.000   SIO2           233   −238.618   1.000           234   505.684   17.000   SIO2           235   259.770   13.056           236   455.638   38.000   SIO2           237   −469.418   1.000           238   236.178   15.000   SIO2           239 = AP   145.030   2.543           240   149.636   45.000   SIO2           241   1347.200   1.000           242   138.086   29.000   SIO2           243   273.919   16.837           244   −2450.800   36.643   SIO2           245   114.868   12.598           246   183.269   33.000   SIO2           247   −427.093   0.100           248   119.177   56.567   SIO2           249   352.582   0.100           250   176.817   42.544   SIO2           251   −263.402   15.000           IM   Infinity   0.000                      
 
     
       
         
           
               
             
               
                 TABLE 2 
               
             
            
               
                   
               
               
                   
               
               
                 Lambda = 193.3 nm  β = −0.25  NA = 0.7 
               
            
           
           
               
               
               
               
               
            
               
                   
                 No. 
                 Radius 
                 Thickness 
                 Glass 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                  0 
                 Infinity 
                 40.000 
                   
               
               
                   
                 301 
                 501.959 
                 20.000 
                 SIO2 
               
               
                   
                 302 
                 6701.736 
                 83.000 
               
               
                   
                 DM1 
                 Infinity 
                   
                 Angle 53.00° 
               
               
                   
                 303 
                 −477.089 
                   
                 SIO2 
               
               
                   
                 304 
                 −5445.982 
               
               
                   
                 305 
                 282.396 
                   
                 SIO2 
               
               
                   
                 306 
                 1204.642 
               
               
                   
                 307 
                 216.126 
                   
                 SIO2 
               
               
                   
                 308 
                 519.194 
               
               
                   
                 309 
                 298.619 
                   
                 Reflector 
               
               
                   
                 (303) 
               
               
                   
                 DM2 
                 Infinity 
                   
                 Angle 37.00° 
               
               
                   
                 310 
                 −277.399 
                   
                 SIO2 
               
               
                   
                 311 
                 876.072 
               
               
                   
                 312 
                 384.127 
                   
                 SIO2 
               
               
                   
                 313 
                 −245.187 
               
               
                   
                 314 
                 −297.630 
                   
                 SIO2 
               
               
                   
                 315 
                 778.473 
               
               
                   
                 316 
                 −422.020 
                   
                 SIO2 
               
               
                   
                 317 
                 945.111 
               
               
                   
                 318 
                 −336.194 
                   
                 SIO2 
               
               
                   
                 319 
                 −169.717 
               
               
                   
                 320 
                 208.247 
                   
                 SIO2 
               
               
                   
                 321 
                 414.789 
               
               
                   
                 322 
                 −639.842 
                   
                 SIO2 
               
               
                   
                 323 
                 420.685 
               
               
                   
                 324 
                 −508.419 
                   
                 SIO2 
               
               
                   
                 325 
                 1843.176 
               
               
                   
                 326 
                 −315.017 
                   
                 SIO2 
               
               
                   
                 327 
                 −182.247 
               
               
                   
                 328 
                 197.495 
                   
                 SIO2 
               
               
                   
                 329 
                 764.726 
               
               
                   
                 330 
                 572.623 
                   
                 SIO2 
               
               
                   
                 331 
                 246.349 
               
               
                   
                 332 
                 −592.087 
                   
                 SIO2 
               
               
                   
                 333 
                 −240.082 
               
               
                   
                 334 
                 −314.738 
                   
                 SIO2 
               
               
                   
                 335 
                 745.437 
               
               
                   
                 336 
                 −219.102 
                   
                 SIO2 
               
               
                   
                 337 
                 −178.632 
               
               
                   
                 338 
                 −269.565 
                   
                 SIO2 
               
               
                   
                 339 = AP 
                 −8665.509 
               
               
                   
                 340 
                 −165.739 
                   
                 SIO2 
               
               
                   
                 341 
                 −378.291 
               
               
                   
                 342 
                 −5121.046 
                   
                 CAF2 
               
               
                   
                 343 
                 457.764 
               
               
                   
                 344 
                 511.311 
                   
                 SIO2 
               
               
                   
                 345 
                 −143.061 
               
               
                   
                 346 
                 −134.125 
                   
                 SIO2 
               
               
                   
                 347 
                 −125.446 
               
               
                   
                 348 
                 −158.475 
                   
                 CAF2 
               
               
                   
                 349 
                 451.948 
               
               
                   
                 350 
                 −122.592 
                   
                 SIO2 
               
               
                   
                 351 
                 −830.354 
               
               
                   
                 352 
                 −374.272 
                   
                 SIO2 
               
               
                   
                 353 
                 500.000 
               
               
                   
                 IM 
                 Infinity 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 3 
               
             
            
               
                   
               
               
                   
               
               
                 Lambda = 193.3 nm  β = −0.25  NA = 0.7 
               
            
           
           
               
               
               
               
               
            
               
                   
                 No. 
                 Radius 
                 Thickness 
                 Glass 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                  0 
                 Infinity 
                 40.000 
                   
               
               
                   
                 401 
                 441.354 
                 20.000 
                 SIO2 
               
               
                   
                 402 
                 −3082.575 
                 82.000 
               
               
                   
                 DM1 
                 Infinity 
                 404.580 
                 Angle 51° 
               
               
                   
                 403 
                 379.755 
                 40.000 
                 CAF2 
               
               
                   
                 404 
                 −503.571 
                 10.819 
               
               
                   
                 405 
                 −538.291 
                 15.000 
                 SIO2 
               
               
                   
                 406 
                 −11216.000 
                 23.000 
               
               
                   
                 407 
                 −289.982 
                 15.000 
                 SIO2 
               
               
                   
                 408 
                 1481.373 
                 35.434 
               
               
                   
                 409 
                 −212.610 
                 15.000 
                 SIO2 
               
               
                   
                 410 
                 −422.622 
                 10.747 
               
               
                   
                 411 
                 281.484 
                 10.747 
                 Reflector 
               
               
                   
                 (403) 
                   
                 391.580 
               
               
                   
                 DM2 
                 Infinity 
                 95.000 
                 Angle 39° 
               
               
                   
                 412 
                 304.777 
                 35.000 
                 SIO2 
               
               
                   
                 413 
                 −414.139 
                 36.096 
               
               
                   
                 414 
                 −217.633 
                 15.000 
                 SIO2 
               
               
                   
                 415 
                 291.419 
                 15.871 
               
               
                   
                 416 
                 372.431 
                 48.000 
                 SIO2 
               
               
                   
                 417 
                 −351.209 
                 1.000 
               
               
                   
                 418 
                 478.050 
                 34.000 
                 SIO2 
               
               
                   
                 419 
                 −840.313 
                 52.353 
               
               
                   
                 420 
                 336.231 
                 20.000 
                 SIO2 
               
               
                   
                 421 
                 175.364 
                 55.562 
               
               
                   
                 422 
                 −230.487 
                 17.000 
                 SIO2 
               
               
                   
                 423 
                 −430.797 
                 1.000 
               
               
                   
                 424 
                 648.294 
                 40.000 
                 SIO2 
               
               
                   
                 425 
                 −404.757 
                 99.810 
               
               
                   
                 426 
                 527.066 
                 30.000 
                 SIO2 
               
               
                   
                 427 
                 −13296.000 
                 1.000 
               
               
                   
                 428 
                 288.592 
                 22.000 
                 SIO2 
               
               
                   
                 429 
                 167.355 
                 54.577 
               
               
                   
                 430 
                 −201.179 
                 20.000 
                 SIO2 
               
               
                   
                 431 
                 −801.011 
                 103.872 
               
               
                   
                 432 
                 −585.801 
                 36.000 
                 SIO2 
               
               
                   
                 433 
                 −252.132 
                 1.000 
               
               
                   
                 434 
                 457.102 
                 17.000 
                 SIO2 
               
               
                   
                 435 
                 260.610 
                 9.580 
               
               
                   
                 436 
                 343.579 
                 43.000 
                 SIO2 
               
               
                   
                 437 
                 −739.447 
                 1.000 
               
               
                   
                 438 
                 226.319 
                 18.500 
                 SIO2 
               
               
                   
                 439 
                 173.228 
                 16.103 
               
               
                   
                 440 
                 272.220 
                 34.000 
                 SIO2 
               
               
                   
                 441 = AP 
                 −7972.902 
                 1.000 
               
               
                   
                 442 
                 165.067 
                 34.000 
                 SIO2 
               
               
                   
                 443 
                 374.040 
                 12.889 
               
               
                   
                 444 
                 2219.918 
                 22.000 
                 CAF2 
               
               
                   
                 445 
                 −490.695 
                 0.100 
               
               
                   
                 446 
                 −715.705 
                 12.000 
                 SIO2 
               
               
                   
                 447 
                 134.285 
                 0.100 
               
               
                   
                 448 
                 123.907 
                 36.879 
                 SIO2 
               
               
                   
                 449 
                 111.965 
                 9.498 
               
               
                   
                 450 
                 147.332 
                 35.000 
                 CAF2 
               
               
                   
                 451 
                 −967.651 
                 0.100 
               
               
                   
                 452 
                 115.241 
                 69.555 
                 SIO2 
               
               
                   
                 453 
                 921.256 
                 0.100 
               
               
                   
                 454 
                 294.383 
                 28.447 
                 SIO2 
               
               
                   
                 455 
                 −500.000 
                 15.000 
               
               
                   
                 IM 
                 Infinity 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 4 
               
             
            
               
                   
               
               
                   
               
               
                 Lambda = 193.3 nm  β = −0.25  NA = 0.7 
               
            
           
           
               
               
               
               
               
            
               
                   
                 No. 
                 Radius 
                 Thickness 
                 Glass 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                  0 
                 Infinity 
                 35.000 
                   
               
               
                   
                 501 
                 407.048 
                 16.000 
                 SIO2 
               
               
                   
                 502 
                 −85814.000 
                 82.000 
               
               
                   
                 DM1 
                 Infinity 
                 431.676 
                 Angle 50° 
               
               
                   
                 503 
                 524.134 
                 35.000 
                 SIO2 
               
               
                   
                 504 
                 −657.304 
                 8.785 
               
               
                   
                 505 
                 −587.479 
                 15.000 
                 SIO2 
               
               
                   
                 506 
                 1940.811 
                 25.643 
               
               
                   
                 507 
                 −324.153 
                 15.000 
                 SIO2 
               
               
                   
                 508 
                 −23676.000 
                 37.709 
               
               
                   
                 509 
                 −201.728 
                 15.000 
                 SIO2 
               
               
                   
                 510 
                 −422.094 
                 12.854 
               
               
                   
                 511 
                 282.375 
                   
                 Reflector 
               
               
                   
                 (503) 
                   
                 422.676 
               
               
                   
                 DM2 
                 Infinity 
                 110.772 
                 Angle 40° 
               
               
                   
                 512 
                 373.692 
                 35.000 
                 SIO2 
               
               
                   
                 513 
                 −410.297 
                 50.772 
               
               
                   
                 514 
                 −222.817 
                 15.000 
                 SIO2 
               
               
                   
                 515 
                 317.101 
                 6.370 
               
               
                   
                 516 
                 349.335 
                 48.000 
                 SIO2 
               
               
                   
                 517 
                 −362.479 
                 1.000 
               
               
                   
                 518 
                 729.698 
                 34.000 
                 SIO2 
               
               
                   
                 519 
                 −931.019 
                 57.653 
               
               
                   
                 520 
                 371.363 
                 20.000 
                 SIO2 
               
               
                   
                 521 
                 210.389 
                 53.764 
               
               
                   
                 522 
                 −248.647 
                 17.000 
                 SIO2 
               
               
                   
                 523 
                 −428.501 
                 1.000 
               
               
                   
                 524 
                 937.198 
                 40.000 
                 SIO2 
               
               
                   
                 525 
                 −388.007 
                 113.824 
               
               
                   
                 526 
                 567.461 
                 30.000 
                 SIO2 
               
               
                   
                 527 
                 −4351.070 
                 1.000 
               
               
                   
                 528 
                 282.352 
                 22.000 
                 SIO2 
               
               
                   
                 529 
                 185.586 
                 56.362 
               
               
                   
                 530 
                 −234.431 
                 20.000 
                 SIO2 
               
               
                   
                 531 
                 −557.904 
                 132.665 
               
               
                   
                 532 
                 −408.165 
                 35.442 
                 SIO2 
               
               
                   
                 533 
                 −266.966 
                 1.000 
               
               
                   
                 534 
                 404.076 
                 17.000 
                 SIO2 
               
               
                   
                 535 
                 238.987 
                 14.763 
               
               
                   
                 536 
                 379.049 
                 43.000 
                 SIO2 
               
               
                   
                 537 
                 −737.556 
                 1.000 
               
               
                   
                 538 
                 245.637 
                 18.500 
                 SIO2 
               
               
                   
                 539 
                 178.878 
                 12.206 
               
               
                   
                 540 
                 245.508 
                 34.000 
                 SIO2 
               
               
                   
                 541 
                 2061.364 
                 10.000 
               
               
                   
                 AP 
                 Infinity 
                 0.000 
               
               
                   
                 542 
                 168.071 
                 34.000 
                 SIO2 
               
               
                   
                 543 
                 473.781 
                 9.798 
               
               
                   
                 544 
                 1851.461 
                 22.000 
                 CAF2 
               
               
                   
                 545 
                 −494.253 
                 0.100 
               
               
                   
                 546 
                 −719.297 
                 12.000 
                 SIO2 
               
               
                   
                 547 
                 132.814 
                 0.100 
               
               
                   
                 548 
                 127.155 
                 34.780 
                 SIO2 
               
               
                   
                 549 
                 118.260 
                 11.187 
               
               
                   
                 550 
                 169.575 
                 35.000 
                 SIO2 
               
               
                   
                 551 
                 −844.545 
                 0.100 
               
               
                   
                 552 
                 111.623 
                 74.968 
                 CAF2 
               
               
                   
                 553 
                 1756.460 
                 0.100 
               
               
                   
                 554 
                 239.829 
                 26.117 
                 CAF2 
               
               
                   
                 555 
                 −500.000 
                 15.000 
               
               
                   
                 IM 
                 Infinity 
                 0.000 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 5 
               
             
            
               
                   
               
               
                   
               
               
                 Lambda = 193.3 nm  β = −0.25  NA = 0.7 
               
            
           
           
               
               
               
               
               
            
               
                   
                 No. 
                 Radius 
                 Thickness 
                 Glass 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                  0 
                 Infinity 
                 35.000 
                   
               
               
                   
                 601 
                 443.397 
                 16.000 
                 SIO2 
               
               
                   
                 662 
                 −3263.101 
                 82.000 
               
               
                   
                 DM1 
                 Infinity 
                 431.967 
                 Angle 50° 
               
               
                   
                 603 
                 510.641 
                 35.000 
                 SIO2 
               
               
                   
                 604 
                 −953.685 
                 12.327 
               
               
                   
                 605 
                 −534.546 
                 15.000 
                 SIO2 
               
               
                   
                 606 
                 1546.359 
                 27.623 
               
               
                   
                 607 
                 −295.422 
                 15.000 
                 SIO2 
               
               
                   
                 608 
                 −1911.545 
                 32.819 
               
               
                   
                 609 
                 −212.072 
                 15.000 
                 SIO2 
               
               
                   
                 610 
                 −404.269 
                 12.229 
               
               
                   
                 611 
                 279.883 
                   
                 Reflector 
               
               
                   
                 (603) 
                   
                 422.967 
               
               
                   
                 DM2 
                 Infinity 
                 109.448 
                 Angle 40° 
               
               
                   
                 612 
                 338.847 
                 28.000 
                 SIO2 
               
               
                   
                 613 
                 −769.850 
                 31.900 
               
               
                   
                 614 
                 1373.814 
                 18.000 
                 SIO2 
               
               
                   
                 615 
                 −915.108 
                 37.909 
               
               
                   
                 616 
                 −239.573 
                 15.000 
                 SIO2 
               
               
                   
                 617 
                 279.202 
                 6.538 
               
               
                   
                 618 
                 301.416 
                 46.477 
                 SIO2 
               
               
                   
                 619 
                 −437.969 
                 1.000 
               
               
                   
                 620 
                 722.212 
                 30.074 
                 SIO2 
               
               
                   
                 621 
                 −1063.807 
                 23.211 
               
               
                   
                 622 
                 381.419 
                 19.000 
                 SIO2 
               
               
                   
                 623 
                 193.859 
                 52.872 
               
               
                   
                 624 
                 −235.061 
                 17.000 
                 SIO2 
               
               
                   
                 625 
                 −412.453 
                 1.000 
               
               
                   
                 626 
                 990.052 
                 40.000 
                 SIO2 
               
               
                   
                 627 
                 −337.530 
                 95.112 
               
               
                   
                 628 
                 529.636 
                 30.000 
                 SIO2 
               
               
                   
                 629 
                 −0.208 
                 1.000 
               
               
                   
                 630 
                 264.737 
                 20.000 
                 SIO2 
               
               
                   
                 631 
                 173.477 
                 55.898 
               
               
                   
                 632 
                 −213.164 
                 19.000 
                 SIO2 
               
               
                   
                 633 
                 −478.343 
                 127.971 
               
               
                   
                 634 
                 −384.253 
                 29.998 
                 SIO2 
               
               
                   
                 635 
                 −241.972 
                 1.000 
               
               
                   
                 636 
                 381.178 
                 17.000 
                 SIO2 
               
               
                   
                 637 
                 218.858 
                 11.314 
               
               
                   
                 638 
                 296.282 
                 43.000 
                 SIO2 
               
               
                   
                 639 
                 −966.118 
                 1.000 
               
               
                   
                 640 
                 230.570 
                 18.500 
                 SIO2 
               
               
                   
                 641 
                 172.880 
                 14.657 
               
               
                   
                 642 
                 271.493 
                 30.000 
                 SIO2 
               
               
                   
                 643 
                 −49526.000 
                 4.000 
               
               
                   
                 AP 
                 Infinity 
                 0.000 
               
               
                   
                 644 
                 156.048 
                 36.000 
                 SIO2 
               
               
                   
                 645 
                 474.860 
                 12.986 
               
               
                   
                 646 
                 −4892.676 
                 20.000 
                 SIO2 
               
               
                   
                 647 
                 −452.665 
                 0.100 
               
               
                   
                 648 
                 −711.904 
                 34.541 
                 SIO2 
               
               
                   
                 649 
                 122.051 
                 9.933 
               
               
                   
                 650 
                 171.475 
                 −33.021 
                 SIO2 
               
               
                   
                 651 
                 −967.318 
                 0.100 
               
               
                   
                 652 
                 112.494 
                 72.297 
                 CAF2 
               
               
                   
                 653 
                 3642.643 
                 0.100 
               
               
                   
                 654 
                 250.427 
                 26.033 
                 CAF2 
               
               
                   
                 655 
                 −500.000 
                 15.000 
               
               
                   
                 IM 
                 Infinity 
                 0.000 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 6 
               
             
            
               
                   
               
               
                   
               
               
                 Lambda = 193.3 nm  β = −0.25  NA = 0.7 
               
            
           
           
               
               
               
               
               
            
               
                   
                 No. 
                 Radius 
                 Thickness 
                 Glass 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                  0 
                 Infinity 
                 35.000 
                   
               
               
                   
                 701 
                 396.818 
                 16.000 
                 SIO2 
               
               
                   
                 702 
                 −4111220.000 
                 1.000 
               
               
                   
                 DP 
                 Infinity 
                 85.500 
                 SIO2 
               
               
                   
                 DP 
                 Infinity 
                 435.933 
                 Angle 50° 
               
               
                   
                 703 
                 559.897 
                 35.000 
                 SIO2 
               
               
                   
                 704 
                 −763.942 
                 2.707 
               
               
                   
                 705 
                 −627.112 
                 15.000 
                 SIO2 
               
               
                   
                 706 
                 2056.900 
                 24.065 
               
               
                   
                 707 
                 −323.749 
                 15.000 
                 SIO2 
               
               
                   
                 708 
                 −4114.500 
                 41.268 
               
               
                   
                 709 
                 −197.452 
                 15.000 
                 SIO2 
               
               
                   
                 710 
                 −416.693 
                 13.024 
               
               
                   
                 711 
                 278.696 
                   
                 Reflector 
               
               
                   
                 (703) 
                   
                 420.933 
               
               
                   
                 DM2 
                 Infinity 
                 84.857 
                 Angle 40° 
               
               
                   
                 712 
                 391.689 
                 35.000 
                 SIO2 
               
               
                   
                 713 
                 −391.139 
                 54.674 
               
               
                   
                 714 
                 −217.120 
                 15.000 
                 SIO2 
               
               
                   
                 715 
                 328.292 
                 6.584 
               
               
                   
                 716 
                 363.974 
                 48.000 
                 SIO2 
               
               
                   
                 717 
                 −352.092 
                 11.973 
               
               
                   
                 718 
                 753.003 
                 34.000 
                 SIO2 
               
               
                   
                 719 
                 −915.634 
                 62.045 
               
               
                   
                 720 
                 369.054 
                 20.000 
                 SIO2 
               
               
                   
                 721 
                 218.165 
                 56.274 
               
               
                   
                 722 
                 −247.872 
                 17.000 
                 SIO2 
               
               
                   
                 723 
                 −420.231 
                 1.000 
               
               
                   
                 724 
                 970.166 
                 40.000 
                 SIO2 
               
               
                   
                 725 
                 −383.655 
                 110.429 
               
               
                   
                 726 
                 556.298 
                 30.000 
                 SIO2 
               
               
                   
                 727 
                 −5145.200 
                 1.000 
               
               
                   
                 728 
                 275.093 
                 22.000 
                 SIO2 
               
               
                   
                 729 
                 186.724 
                 57.861 
               
               
                   
                 730 
                 −249.939 
                 24.499 
                 SIO2 
               
               
                   
                 731 
                 −573.695 
                 138.278 
               
               
                   
                 732 
                 −424.514 
                 35.114 
                 SIO2 
               
               
                   
                 733 
                 −274.834 
                 1.000 
               
               
                   
                 734 
                 391.263 
                 17.000 
                 SIO2 
               
               
                   
                 735 
                 226.128 
                 16.728 
               
               
                   
                 736 
                 383.272 
                 43.000 
                 SIO2 
               
               
                   
                 737 
                 −863.203 
                 1.000 
               
               
                   
                 738 
                 239.284 
                 18.500 
                 SIO2 
               
               
                   
                 739 
                 178.197 
                 11.299 
               
               
                   
                 740 
                 237.727 
                 34.000 
                 SIO2 
               
               
                   
                 741 
                 1618.000 
                 10.000 
               
               
                   
                 AP 
                 Infinity 
                 0.000 
               
               
                   
                 742 
                 165.688 
                 34.000 
                 SIO2 
               
               
                   
                 743 
                 445.266 
                 9.217 
               
               
                   
                 744 
                 1247.900 
                 22.000 
                 CAF2 
               
               
                   
                 745 
                 −503.423 
                 0.000 
               
               
                   
                 746 
                 −771.731 
                 12.000 
                 SIO2 
               
               
                   
                 747 
                 131.678 
                 0.100 
               
               
                   
                 748 
                 124.872 
                 29.133 
                 SIO2 
               
               
                   
                 749 
                 115.885 
                 13.283 
               
               
                   
                 750 
                 179.986 
                 35.000 
                 SIO2 
               
               
                   
                 751 
                 −802.711 
                 0.100 
               
               
                   
                 752 
                 110.497 
                 77.422 
                 CAF2 
               
               
                   
                 753 
                 2393.500 
                 0.100 
               
               
                   
                 754 
                 234.953 
                 25.804 
                 CAF2 
               
               
                   
                 755 
                 −500.000 
                 15.000 
               
               
                   
                 IM 
                 Infinity 
                 0.000 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 7 
               
             
            
               
                   
               
               
                   
               
               
                 Lambda = 193 nm  β = −0.25  NA = 0.8 
               
            
           
           
               
               
               
               
               
            
               
                   
                 No. 
                 Radius 
                 Thickness 
                 Glass 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                  0 
                 Infinity 
                 35.000 
                   
               
               
                   
                 801 
                 355.625 
                 15.000 
                 SIO2 
               
               
                   
                 802 
                 Infinity 
                 84.000 
               
               
                   
                 DM1 
                 Infinity 
                 393.919 
                 Angle 50° 
               
               
                   
                 803 
                 621.321 
                 30.000 
                 SIO2 
               
               
                   
                 804 
                 17349.000 
                 15.577 
               
               
                   
                 805 
                 −522.771 
                 15.000 
                 SIO2 
               
               
                   
                 806 
                 7450.061 
                 28.795 
               
               
                   
                 807 
                 −279.969 
                 15.000 
                 SIO2 
               
               
                   
                 808 
                 −692.552 
                 26.633 
               
               
                   
                 809 
                 −231.205 
                 15.000 
                 SIO2 
               
               
                   
                 810 
                 −419.760 
                 13.994 
               
               
                   
                 811 
                 283.256 
                   
                 Reflector 
               
               
                   
                 (803) 
                   
                 384.919 
               
               
                   
                 DM2 
                 Infinity 
                 103.131 
                 Angle 40° 
               
               
                   
                 812 
                 363.520 
                 35.000 
                 SIO2 
               
               
                   
                 813 
                 −312.546 
                 19.745 
               
               
                   
                 814 
                 −203.460 
                 15.000 
                 SIO2 
               
               
                   
                 815 
                 417.901 
                 4.913 
               
               
                   
                 816 
                 637.371 
                 44.999 
                 SIO2 
               
               
                   
                 817 
                 −299.660 
                 1.000 
               
               
                   
                 818 
                 670.513 
                 36.000 
                 SIO2 
               
               
                   
                 819 
                 −607.949 
                 99.443 
               
               
                   
                 820 
                 409.543 
                 20.000 
                 SIO2 
               
               
                   
                 821 
                 184.175 
                 56.726 
               
               
                   
                 822 
                 −190.739 
                 18.000 
                 SIO2 
               
               
                   
                 823 
                 −300.666 
                 1.000 
               
               
                   
                 824 
                 2541.548 
                 35.000 
                 SIO2 
               
               
                   
                 825 
                 −423.211 
                 82.343 
               
               
                   
                 826 
                 529.976 
                 40.000 
                 SIO2 
               
               
                   
                 827 
                 −575.433 
                 1.000 
               
               
                   
                 828 
                 338.904 
                 22.000 
                 SIO2 
               
               
                   
                 829 
                 161.992 
                 77.036 
               
               
                   
                 830 
                 −180.232 
                 20.000 
                 SIO2 
               
               
                   
                 831 
                 −286.886 
                 60.230 
               
               
                   
                 832 
                 1358.390 
                 50.000 
                 SIO2 
               
               
                   
                 833 
                 −310.335 
                 1.000 
               
               
                   
                 834 
                 299.546 
                 17.000 
                 SIO2 
               
               
                   
                 835 
                 185.330 
                 22.475 
               
               
                   
                 836 
                 318.393 
                 15.000 
                 SIO2 
               
               
                   
                 837 
                 240.343 
                 11.470 
               
               
                   
                 838 
                 351.936 
                 35.000 
                 SIO2 
               
               
                   
                 839 
                 −1892.972 
                 1.000 
               
               
                   
                 840 
                 241.744 
                 18.500 
                 SIO2 
               
               
                   
                 841 
                 201.167 
                 6.992 
               
               
                   
                 842 
                 233.761 
                 35.000 
                 SIO2 
               
               
                   
                 843 
                 1187.547 
                 0.000 
               
               
                   
                 AP 
                 Infinity 
                 6.993 
               
               
                   
                 844 
                 173.633 
                 65.000 
                 CAF2 
               
               
                   
                 845 
                 −647.630 
                 0.100 
               
               
                   
                 846 
                 −1026.314 
                 15.000 
                 SIO2 
               
               
                   
                 847 
                 134.041 
                 12.672 
               
               
                   
                 848 
                 177.508 
                 43.000 
                 SIO2 
               
               
                   
                 849 
                 −552.796 
                 0.100 
               
               
                   
                 850 
                 111.087 
                 82.051 
                 CAF2 
               
               
                   
                 851 
                 366.445 
                 0.100 
               
               
                   
                 852 
                 201.556 
                 9.977 
                 CAF2 
               
               
                   
                 853 
                 Infinity 
                 15.000 
               
               
                   
                 IM 
                 Infinity 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 8 
               
             
            
               
                   
               
               
                   
               
               
                 Lambda 157.000 nm ± 2 pm  NA = 0.7  β = −0.25 
               
            
           
           
               
               
               
               
               
            
               
                   
                 No. 
                 Radius 
                 Thickness 
                 Glass 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                  0 
                 Infinity 
                 35.000 
                   
               
               
                   
                 901 
                 509.596 
                 16.000 
                 CAF2 
               
               
                   
                 902 
                 −1709.182 
                 82.000 
               
               
                   
                 DM1 
                 Infinity 
                 430.770 
                 Angle 50° 
               
               
                   
                 903 
                 559.504 
                 35.000 
                 CAF2 
               
               
                   
                 904 
                 −1229.460 
                 18.117 
               
               
                   
                 905 
                 −727.847 
                 15.000 
                 CAF2 
               
               
                   
                 906 
                 1261.260 
                 27.332 
               
               
                   
                 907 
                 −297.498 
                 15.000 
                 CAF2 
               
               
                   
                 908 
                 −1565.150 
                 32.707 
               
               
                   
                 909 
                 −205.835 
                 15.000 
                 CAF2 
               
               
                   
                 910 
                 −396.253 
                 12.181 
               
               
                   
                 911 
                 279.103 
                 Reflector 
                 Φ252 mm 
               
               
                   
                 (903) 
                   
                 420.578 
               
               
                   
                 DM2 
                 Infinity 
                 73.026 
                 Angle 40° 
               
               
                   
                 IMI 
                 Infinity 
                 34.034 
               
               
                   
                 912 
                 341.070 
                 28.000 
                 CAF2 
               
               
                   
                 913 
                 −1505.473 
                 32.408 
               
               
                   
                 914 
                 969.048 
                 18.000 
                 CAF2 
               
               
                   
                 915 
                 −805.764 
                 37.523 
               
               
                   
                 916 
                 −248.947 
                 15.000 
                 CAF2 
               
               
                   
                 917 
                 286.272 
                 5.893 
               
               
                   
                 918 
                 307.931 
                 45.973 
                 CAF2 
               
               
                   
                 919 
                 −386.903 
                 1.000 
               
               
                   
                 920 
                 1003.377 
                 28.290 
                 CAF2 
               
               
                   
                 921 
                 −945.839 
                 20.042 
               
               
                   
                 922 
                 397.781 
                 19.000 
                 CAF2 
               
               
                   
                 923 
                 197.943 
                 53.200 
               
               
                   
                 924 
                 −231.060 
                 17.000 
                 CAF2 
               
               
                   
                 925 
                 −406.748 
                 1.000 
               
               
                   
                 926 
                 878.953 
                 40.000 
                 CAF2 
               
               
                   
                 927 
                 −351.000 
                 100.639 
               
               
                   
                 928 
                 481.080 
                 30.000 
                 CAF2 
               
               
                   
                 929 
                 11551.730 
                 1.000 
               
               
                   
                 930 
                 282.768 
                 20.000 
                 CAF2 
               
               
                   
                 931 
                 179.880 
                 51.341 
               
               
                   
                 932 
                 −217.737 
                 19.000 
                 CAF2 
               
               
                   
                 933 
                 −511.417 
                 127.776 
               
               
                   
                 934 
                 −377.857 
                 29.786 
                 Φ240 mm CAF2 
               
               
                   
                 935 
                 −241.099 
                 1.000 
               
               
                   
                 936 
                 377.020 
                 17.000 
                 CAF2 
               
               
                   
                 937 
                 218.220 
                 11.262 
               
               
                   
                 938 
                 299.020 
                 43.000 
                 CAF2 
               
               
                   
                 939 
                 −943.927 
                 1.000 
               
               
                   
                 940 
                 228.020 
                 18.500 
                 CAF2 
               
               
                   
                 941 
                 168.921 
                 13.866 
               
               
                   
                 942 
                 263.149 
                 30.000 
                 CAF2 
               
               
                   
                 943 
                 −27570.214 
                 0.752 
               
               
                   
                 AP 
                 Infinity 
                 8.754 
               
               
                   
                 944 
                 157.192 
                 36.000 
                 CAF2 
               
               
                   
                 945 
                 476.977 
                 13.281 
               
               
                   
                 946 
                 −5291.918 
                 20.000 
                 CAF2 
               
               
                   
                 947 
                 −428.700 
                 0.100 
               
               
                   
                 948 
                 −634.165 
                 34.624 
                 CAF2 
               
               
                   
                 949 
                 123.520 
                 10.454 
               
               
                   
                 950 
                 180.781 
                 33.303 
                 CAF2 
               
               
                   
                 951 
                 −732.821 
                 0.100 
               
               
                   
                 952 
                 115.913 
                 72.125 
                 CAF2 
               
               
                   
                 953 
                 3615.409 
                 0.100 
               
               
                   
                 954 
                 308.142 
                 25.802 
                 CAF2 
               
               
                   
                 955 
                 −500.000 
                 15.000 
               
               
                   
                 IM 
                 Infinity 
               
            
           
           
               
            
               
                 Refractive Indices CaF 2   
               
            
           
           
               
               
               
               
            
               
                   
                 Lambda = 157.002 
                 157.000 
                 156.998 
               
               
                   
                 n = 1.560047 
                 1.560052 
                 1.560057