Abstract:
A projection objective, particularly for microlithography at 248 nm or 193 nm has, after two bulges and two waists, a pronounced lens arrangement that preferably contains a further waist and the system diaphragm (AS). This is markedly set back from the negative lens group containing the second waist, and is surrounded by important correction devices. The highest numerical aperture (0.65-0.80) is attained with the smallest lens diameters and by paying heed to the further qualities required for such a microlithography projection objective.

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     Not applicable. 
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
     Not applicable. 
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The invention relates to a projection objective with at least two waists and three bulges, as was developed for microlithography and for example is known from the patent application (not prior published) “Mikrolithographisches Reduktionsobjectiv, Projektions-belichtungs-Anlage und-Verfahren” (“Microlithograpbic Reduction Objective, Projection Exposure Equipment and Process”) of the invention priority of the same priority date, and the documents cited therein. An example therefrom is, e.g., U.S. patent application Ser. No. 09/416,105. This application and the documents cited therein are incorporated herein by reference. 
     The required reduction in size of the projected structures leads to working with progressively lower wavelengths of the light used. Of importance here are the excimer laser sources at 248 nm, 193 nm and 157 nm. 
     While purely quartz glass objectives are usable at 248 nm, a partial achromatization is required at 193 nm because of the increasing dispersion of quartz glass, and calcium fluoride is available as a second material for combination with quartz glass for this purpose. 
     However, calcium fluoride lenses have to be used as sparingly as possible for various reasons, from the availability of large, homogeneous crystals to the feasibility of optical processing. 
     It makes little sense to reduce the wavelengths and introduce completely new system technologies if the numerical aperture is not kept up to the high level attained (above 0.6, preferably 0.65 and more), since the resolution is in fact determined by the quotient lambda/NA. 
     For other wavelengths also, particularly for purely quartz glass DUV systems, an increase of the numerical aperture is sought, without a further increase of the lens diameter, since the limits of production feasibility are then also reached. 
     SUMMARY OF THE INVENTION 
     The invention therefore has as its object to provide a projection objective that makes possible the highest numerical aperture with the smallest lens diameter, taking note of the additional properties required in a microlithographic projection objective. 
     This object is successfully attained by the following measures that relate to the lens groups situated after the second waist and in front of the image, to the position of the system diaphragm, and to the constitution of the diaphragm space, and provide for a novel constriction (beam waist, reduction of beam diameter) there. 
     The projection objective has a lens arrangement with a first positive lens groups (LG 1 ), a first negative lens group (LG 2 ), a second positive lens group (LG 3 ), a second negative lens group (LG 4 ), and a further lens arrangement (LG 5 -LG 7 ) containing a system diaphragm (AS), wherein at least one of the two next lenses before or after said system diaphragm AS has negative refractive power. 
     The projection objective includes a lens arrangement with: a first positive lens group (LG 1 ), a first negative lens group (LG 2 ), a second positive lens group (LG 3 ), a second negative lens group (LG 4 ), a further lens arrangement (LG 5 -LG 7 ) containing a system diaphragm (AS), and at least three lenses before said system diaphragm (AS). 
     The projection objective with a lens arrangement has a first positive lens group (LG 1 ), a first negative lens group (LG 2 ), a second positive lens group (LG 3 ), a second negative lens group (LG 4 ), a further lens arrangement (LG 5 -LG 7 ) containing an system diaphragm (AS), and at least one spherically over-correcting air space between adjacent lenses in front of said system diaphragm (AS). 
     The projection objective with at least two waists and three bulges, has a system diaphragm (AS) arranged in a region of a last bulge on an image side of said projection objective, and a pair of lenses before or after said system diaphragm (AS), wherein at least one lens of said pair of lenses is negative. 
     Advantageous possible combinations of the above measures according to the invention are shown in the preferred embodiments. 
     A particularly advantageous embodiment of the invention has a high numerical aperture of above 0.65 or 0.70. This can indeed count as an object that is always set per se; however, it is an outstanding feature of the invention that these values are reliably attained, and indeed under otherwise usable conditions such as image field and the like. 
     An advantageous construction according to the invention is an objective of a single material, in particular a quartz glass objective such as is provided for DUV at 248 nm. An advantageous embodiment has two different lens materials. A partially achromatized objective (e.g., for 193 nm) with quartz glass and calcium fluoride is an advantageous embodiment. The wide applicability of the objective design is apparent from this, and it can also be applied to other wavelengths, such as 365 nm or 157 nm, eventually using other lens materials. 
     In an advantageous embodiment of the correction means of the negative lens in the diaphragm space, the negative lenses are provided on both sides of the aperture diaphragm. 
     Advantageously, there are likewise provided in this region two spherically over-correcting air spaces, the middle thickness of which is thus greater than the thickness at the edge. 
     An advantageous constructional feature for the region of the first positive lens group includes two negative lenses provided among the first three lenses on the object side, preferably the first lens being negative. This helps to reach high apertures with good Petzval correction. 
     Advantageously, the projection objective according to the invention is incorporated in a projection exposure equipment for microlithography, with which an increased imaging performance can be effected, for example, with laser light at 248 nm or 193 nm, within the scope of conventional constructions. 
     An advantageous process for the production of microstructured components, with such a projection exposure equipment and a projection objective is as follows: exposing a substrate provided with a photosensitive layer by a mask and a projection objective and structuring the photosensitive layer corresponding to a pattern contained on said mask. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention is described in more detail with reference to the accompanying drawings, in which: 
     FIG. 1 shows the lens section of a first embodiment with NA=0.7; 
     FIG. 2 shows the lens section of a second embodiment with NA=0.7; 
     FIG. 3 shows the lens section of a third embodiment with NA=0.75; 
     FIG. 4 shows the lens section of a fourth embodiment with NA=0.8; 
     FIG. 5 shows the lens section of a fifth embodiment with NA=0.8, as a purely quartz lens objective for 248 nm; 
     FIG. 6 shows the lens section of a sixth embodiment; and 
     FIGS.  7 ( a-c ) shows typical aberrations in the case of the sixth embodiment. 
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     A partially achromatized refractive 193 nm lithographic objective requires at least two optical materials. Quartz glass and calcium fluoride (CaF 2 ) are the most suitable for this. In the case of CaF 2 , there are deficiencies in homogeneity and in double refraction (besides other crystal defects and inclusions). In order to keep the effect of double refraction small, the optical path length in the crystal must be as small as possible, i.e., as little as possible of the quantity of the crystal must be used in the objective. This similarly applies as regards the detrimental effects of inhomogeneity, and in addition the crystal must be located as near as possible to the pupil, so that the effects of inhomogeneity do not vary over the image height. This is more successfully achieved, the closer the crystal is to the system diaphragm. The reduction of the crystal volume is also a necessity as regards the restricted quantity available and, not least, a quite considerable question of cost. 
     A particular problem regularly arises in the achromatization of a lithographic objective with CaF 2  in the positive lenses in the diaphragm region, all the other lenses being quartz glass: there is only a small action on longitudinal color errors when CaF 2  is substituted for quartz glass in the positive lens, even if the most effective possibilities of use according to the invention are applied. This is a consequence of the small difference of the dispersion of quartz glass and CaF 2 . An unfavorable transverse color error occurs at the same time. There are often more lenses which can be substituted behind the diaphragm than in front of the diaphragm. If a diameter is required for the CaF 2  lenses which is smaller than that which would be acceptable for a purely quartz glass objective with good transverse color error correction, an unfavorable transverse color error arises. In order to maintain the Petzval correction of the objective, the second bulge in a typical three-bulge construction becomes larger when the third bulge has to be smaller. 
     If it is desired to construct a high aperture lithographic objective with, e.g., an NA on the object side greater than or equal to 0.65 and at the same time small CaF 2  lens diameters, the situation becomes dramatically more critical. 
     In order to reduce the transverse color errors again, positive CaF 2  lenses have to be introduced in the second bulge. This however violates the requirement for positioning near the diaphragm, and in addition it is the second bulge which is now large in diameter. 
     The solution of the problem according to the invention consists of a construction which is next explained with reference to the example of FIG.  1  and Table 1: the CaF 2  lenses L 18 -L 20 , L 22 , L 23  are made smaller in diameter, and the second bulge LG 3  is likewise made small. The transverse color errors thus remain small, but not yet small enough: with this alone, the Petzval correction would now be considerably violated, and a strongly curved, unusable image field would result. In order to restore the Petzval correction, substantially without detriment to the transverse color errors, the first bulge LG 1 , as can be seen in the example of FIG. 1, is considerably enlarged in diameter. This is obtained by the lens sequence (L 1 -L 8  of the LG 1  and LG 2 )−++++−+−. Other sequences, for example +−+++−+, are likewise possible, but not quite so effective. Other sequences, such as e.g. −+++−+, are feasible with aspherization. 
     However, these measures are not sufficient to effect the Petzval correction. The “third bulge” would also have to be larger. This is however not acceptable, since the CaF 2  lenses L 18 -L 20 , L 22 , L 23  are situated here. The solution of the problem consists of the conversion of the third bulge into a double bulge LG 5 -LG 7 . The first portion LG 5  of the double bulge is small in diameter and is fully mounted with CaF 2  lenses L 18 -L 20 . A lens L 21  with strong negative refractive power is seated in the narrowing (waist) LG 6 . The second partial bulge LG 7  likewise starts with CaF 2  lenses L 23 , L 24 , which are still small in diameter. The diameter then strongly increases. This is possible due to the strongly negative refractive power of the lens L 24  which is adjacent to the CaF 2  lenses L 22 , L 23 . A markedly curved converging meniscus L 25 , which is concave on the object side, increases the widening of diameter (it reduces the transverse color errors and assists in obtaining small diameters in the diaphragm region). A strongly positive group L 26 -L 28  now converges from the large diameter toward the image IM. It is finally attained by means of this group with large diameter and strongly positive refractive power that the system can at the same time be outstandingly corrected with regard to Petzval curvature and to transverse color errors. 
     This arrangement reduces the longitudinal color errors. The large refractive power of the CaF 2  lenses L 18 -L 20  in the first portion LG 5  of the double bulge is likewise very helpful to the solution of the transverse color error problem. 
     The partial achromatization of a 193 nm lithographic objective is attained by the solution of the addressed problem. Five CaF 2  lenses L 18 -L 20 , L 23 , L 24 , all near the system diaphragm AS as shown in the example, are sufficient to attain an NA=0.7 and an image field of 29.1 mm with a bandwidth of 0.5 pm. The reduction factor amounts to 4.0. The objective is telecentric on the image side. All the CaF 2  lenses are smaller than 220 mm in (optically required) diameter, and in the example have a total thickness of less than 200 mm. Overall, there are 32 lenses in the objective. 
     The two lenses L 31 , L 32  situated at the end on the image side, and the flat closure plate P (for protection of the objective) are likewise made of CaF 2 . However, this has nothing to do with the achromatization: the light intensity here is the highest, and CaF 2  is more stable to radiation than is quartz glass, particularly as regards “compaction”. 
     The beam heights H max  given in Table 1 and well traced in FIG. 1 clearly show how a bulge is formed at the lens L 4  in the first lens group LG 1 , a waist is formed in the second (LG 2 ) between lenses L 8  and L 9 , a bulge in the third (LG 3 ) at the lens L 12 , a waist in the fourth (LG 4 ) to the lens L 16 . 
     Less strongly modulated than these, the further lens groups LG 5 -LG 7  form a bulge at the lens L 19 , a third waist at the negative lens L 21 , which is first present in this invention, and a fourth bulge at the lens L 26 . 
     The system diaphragm AS is arranged between this new waist (L 21 ) and the fourth bulge (L 26 ). It is significant that the system diaphragm is surrounded by two negative lenses L 21 , L 24 , respectively only separated by one positive lens L 22 , L 23  of CaF 2 . 
     This grouping is characterizing according to the invention for the design approach found for correction of the objective; this is indeed lengthened, but the lens diameter is kept limited in that it is kept substantially stable over wide regions. 
     Also significant are the air spaces between the lenses L 20 /L 21 , L 21 /L 22  and L 23 /L 24  with greater middle thickness than edge thickness, thus acting with a spherically over-correcting effect. Such an air space, as finds embodiment according to the invention, is primarily important ahead of the aperture system AS. However, the pairing in the sense of the invention, by which the invention is further optimized, is also advantageous. 
     A special feature of the preferred embodiments according to the invention is that the aperture system AS is moved far away from the second negative lens group LG 4 . Five lenses, L 18  through L 22 , are situated there between in the example of FIG.  1 . 
     The correction of this embodiment example attains 23 mλ. Helium is provided as the gas filling. 
     The embodiment according to FIG.  2  and Table 2 differs from the embodiment of FIG. 1 substantially in that a CaF 2  lens L 37  is also provided for color correction in the third lens group LG 3 , between the second bulge and the second waist. This also has a moderate diameter here, combined with a good effect. A positive lens  49  is arranged between the negative lens L 48  which follows the system diaphragm AS and the concave meniscus  50  on the object side, and was withdrawn from the succeeding convergent group. With the same performance, the overall number of lenses is greater than in FIG.  1 . 
     The embodiment of FIG. 3 has the characterizing data of Table 3. 
     The total number of lenses has increased to 37. The first lens L 1  is divided into the two negative lenses  301 ,  302 . This facilitates the strong beam widening for the benefit of the Petzval correction while obtaining the other favorable aberration values. A further elaboration of the first lens to a further, independent lens group is possible. The meniscus L 10  is divided into the lenses  311 ,  312 . A convergent lens  317  has been introduced into the third lens group LG 3  for this purpose. Also, the lens L 16  in the waist LG 4  has been divided into two lenses  319 ,  320 . LG 5  remains unchanged, and is now followed by 13 instead of 12 lenses. The degrees of freedom thus attained are useful in order to compensate the drastically increased error loading accompanying the increased aperture of NA=0.75. 
     The lenses following the fifth lens group with the third bulge are described for this embodiment in a deviating group division (without anything substantially thereby changing). 
     The group LG 6  includes the fourth beam waist at the lens  325  and the system diaphragm AS, surrounded by two negative lenses  325 ,  328  with interposed positive CaF 2  lenses  326 ,  327 . As in FIG. 1, this group is supported in its corrective action by biconvex air lenses before and after the two negative lenses  325 ,  328 . The lens group LG 7  includes the concave meniscus  329  on the object side and four convergent lenses  330 - 333 . The fourth bulge is formed at lens  330 . This region corresponds to the focusing group of FIG.  1 . 
     The following lens group LG 8 , here indicated separately, has further negative refractive power. Its function is common to the objectives of the category concerned. It provides for the high beam angle corresponding to the numerical aperture to first appear in the last lenses before the image IM, and thus at the same quite importantly for the lens diameter to remain restricted. The thick meniscus L 30  of FIG. 1 is divided here into two menisci  334 ,  335 . 
     The fourth embodiment according to FIG.  4  and Table 4 has a farther increase of numerical aperture to 0.8. The number of lenses is likewise 37 here. In contrast to FIG. 3, the lens groups LG 3  and LG 4  are simplified again. However, LG 5  now has an additional positive lens  423 . LG 6  is also provided with additional correction function by dividing the negative lens  325  into a meniscus  424  and a negative lens  425 , with a considerable increase of thickness. The meniscus  429  in the lens group LG 7  has become thinner, to the benefit of the convergent lens  431 . 
     As in the embodiments of FIG.  1  and FIG. 3, for achromatization, the positive lenses  420 - 423  of the lens groups LG 5  and LG 6  in the neighborhood of the diaphragm are made of CaF 2 . The largest diameter of a CaF 2  lens is attained at lens  22  with a diameter of 315 mm. The largest lens overall is lens  430  with a diameter of 325 mm. These values are of course demanding as regards production technology, but are not too high in view of the performance of the objective. The lenses  436  and  437 , as well as the closure plate P 4 , are also made of CaF 2  for reasons of compaction, as explained in regard to FIG.  1 . 
     A fifth embodiment is presented in FIG.  5  and Table 5, likewise with the extreme numerical aperture of 0.8. This is a DUV objective for 248 nm, which is embodied as a purely quartz objective. 
     In comparison with other types of objectives, the overall length is indeed large, with Ob-IM=1695 mm; however, it succeeds in embodying the large NA=0.8 with an image field diameter of 27.2 mm and a greatest lens diameter of 341 mm (lens  529 ). 
     The longitudinal color error CHV (500 pm)=0.11 mm is further improved, with good transverse color error CHV (500 pm)=−0.41 mm, and a greatest RMS error=18.7 mλ over the whole image field. 
     As in the embodiment of FIG. 4, 37 lenses are arranged here, in substantially the same construction. The concept according to the invention also proves effective here: starting from the construction with two waists (LG 2 , LG 4 ) and the two first bulges (LG 1 , LG 3 ) of the beam of light, there are provided, not a simple third bulge, but a double bulge LG 5 , LG 7  divided by a third waist LG 6 , even if this is not strongly pronounced. The system diaphragm AS is then arranged in this near the waist LG 6 , between negative lenses  525 ,  528 . 
     The embodiment according to FIG.  6  and Table 6 is again designed for a 193 nm excimer laser, and has a numerical aperture of NA=0.7 on the image side. However, the number of lenses, 31, is markedly reduced in contrast to the preceding examples. Also, with four achromatizing CaF 2  lenses and a compaction-preventing CaF 2  lens plus CaF 2  flat plate P 6 , fewer CaF 2  elements are used. Overall, this gives considerable savings in production costs. 
     The essential special feature is that the first three lenses  601 ,  602 ,  603  after the object plane  0  have negative, positive and negative (−+−) refractive power, the third lens being a meniscus, concave on the object side. In comparison, in the examples according to FIGS. 1 and 2, −++ arrangements, and according to FIGS. 3-5, −−+ arrangements, are provided, the second + lens being biconvex in FIGS. 1 and 2. 
     This measure succeeds in bringing the diameter of the first lens group (at the lens  605 ) up to the level of the second lens group (at lens  614 ), and thus already giving a favorable effect on the Petzval sun in the first lens group. At the same time, telecentricity, distortion and further imaging errors can be optimized. 
     A further development of the first lenses into an independent lens group is likewise possible here. 
     Two biconvex positive CaF 2  lenses  622 ,  623  are arranged on either side of the system diaphragm AS, framed by two negative quartz glass lenses, lenses  621 ,  624 . Respective positive air lenses are provided therebetween, as are also provided in the preceding examples, as typical correction means. 
     Only two positive CaF 2  lenses are used upstream of this, and hence only four CaF 2  lenses in all are used for achromatization. 
     Thereafter, the lens  624  is constituted as a positive meniscus, concave on the object side, as is likewise typical for the kind of objective represented. 
     A third waist is here present only faintly at the surface on the object side of the lens  624 . However, the typical long region of stable lens diameter is constituted around the system diaphragm AS. 
     At the end on the image side, the lens pair with a strongly curved, thin air gap, present in the preceding examples, has been successfully united into a thick lens  631 . This, together with the preceding lens  630  and the flat closure plate P 6 , is made of CaF 2 , for protection from disturbing compaction effects as in the preceding examples. 
     The good correction attained in this example is shown by the aberration curves of FIG.  7 . FIG. 7 a  gives the distortion (in μm) as a function of the image height YB (in mm). Its greatest contributions amount to 2 nm. 
     FIG. 7 b  gives the sagittal transverse aberration DZS as a function of the half aperture angle DW′, for image heights Y′=14.5 mm, 10.3 and 0. 
     FIG. 7 c  gives the meridional transverse aberration DYM, for the same image heights. Both show an outstanding course up to the highest DW′. 
     The various examples show the great applicability of this concept for different embodiments at very high apertures. 
     Overall, the arrangement according to the invention succeeds in providing classical, axially symmetrical, purely refractive objectives with high numerical aperture, for microlithography with structure widths below 0.2 μm, and whose qualities recently only were expected from catadioptric or catoptric systems. 
     
       
         
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                   
                 TABLE 1 
               
             
             
               
                   
                   
               
               
                   
                 λ (193 nm) 
                   
               
             
          
           
               
                   
                 No. 
                 r (mm) 
                 d (mm) 
                 Glass 
                 H max  (mm) 
               
               
                   
                   
               
             
          
           
               
                   
                 Ob 
                 ∞ 
                 20.139 
                   
                   
               
               
                   
                 L1 
                 −123.979 
                 10.278 
                 SiO 2   
                 64 
               
               
                   
                   
                 403.784 
                 19.789 
               
               
                   
                 L2 
                 −317.124 
                 17.341 
                 SiO 2   
                 78 
               
               
                   
                   
                 −189.047 
                 .750 
               
               
                   
                 L3 
                 1942.788 
                 36.025 
                 SiO 2   
                 96 
               
               
                   
                   
                 −210.589 
                 .750 
               
               
                   
                 L4 
                 493.421 
                 41.364 
                 SiO 2   
                 107 
               
               
                   
                   
                 −314.691 
                 .750 
               
               
                   
                 L5 
                 211.644 
                 36.468 
                 SiO 2   
                 102 
               
               
                   
                   
                 36053.922 
                 .756 
               
               
                   
                 L6 
                 122.962 
                 13.151 
                 SiO 2   
                 84 
               
               
                   
                   
                 87.450 
                 46.263 
               
               
                   
                 L7 
                 −741.457 
                 14.677 
                 SiO 2   
                 72 
               
               
                   
                   
                 −245.743 
                 3.094 
               
               
                   
                 L8 
                 −708.992 
                 9.066 
                 SiO 2   
                 67 
               
               
                   
                   
                 132.207 
                 35.782 
               
               
                   
                 L9 
                 −119.439 
                 9.425 
                 SiO 2   
                 61 
               
               
                   
                   
                 254.501 
                 31.157 
               
               
                   
                 L10 
                 −143.292 
                 32.973 
                 SiO 2   
                 69 
               
               
                   
                   
                 −162.944 
                 2.513 
               
               
                   
                 L11 
                 673.137 
                 41.208 
                 SiO 2   
                 101 
               
               
                   
                   
                 −230.715 
                 1.371 
               
               
                   
                 L12 
                 −3742.535 
                 19.854 
                 SiO 2   
                 105 
               
               
                   
                   
                 −444.648 
                 .750 
               
               
                   
                 L13 
                 482.433 
                 20.155 
                 SiO 2   
                 105 
               
               
                   
                   
                 −3294.813 
                 .750 
               
               
                   
                 L14 
                 221.831 
                 31.717 
                 SiO 2   
                 99 
               
               
                   
                   
                 −3330.760 
                 .151 
               
               
                   
                 L15 
                 301.827 
                 8.035 
                 SiO 2   
                 90 
               
               
                   
                   
                 133.707 
                 44.742 
               
               
                   
                 L16 
                 −235.659 
                 9.864 
                 SiO 2   
                 79 
               
               
                   
                   
                 200.421 
                 47.451 
               
               
                   
                 L17 
                 −126.570 
                 9.713 
                 SiO 2   
                 79 
               
               
                   
                   
                 −8830.267 
                 2.058 
               
               
                   
                 L18 
                 3591.477 
                 47.215 
                 CaF 2   
                 96 
               
               
                   
                   
                 −155.694 
                 .761 
               
               
                   
                 L19 
                 1671.774 
                 42.497 
                 CaF 2   
                 108 
               
               
                   
                   
                 −212.059 
                 .754 
               
               
                   
                 L20 
                 767.377 
                 20.436 
                 CaF 2   
                 103 
               
               
                   
                   
                 −2961.864 
                 24.166 
               
               
                   
                 L21 
                 −236.317 
                 20.505 
                 SiO 2   
                 101 
               
               
                   
                   
                 313.867 
                 7.393 
               
               
                   
                 L22 
                 365.958 
                 35.000 
                 CaF 2   
                 105 
               
               
                   
                   
                 −1015.913 
                 15.000 
               
               
                   
                 AS 
                 ∞ 
                 4.055 
                   
                 107 
               
               
                   
                 L23 
                 304.439 
                 47.448 
                 CaF 2   
                 109 
               
               
                   
                   
                 −354.885 
                 12.212 
               
               
                   
                 L24 
                 −237.609 
                 30.672 
                 SiO 2   
                 108 
               
               
                   
                   
                 −1864.732 
                 26.398 
               
               
                   
                 L25 
                 −255.995 
                 43.703 
                 SiO 2   
                 114 
               
               
                   
                   
                 −220.445 
                 .050 
               
               
                   
                 L26 
                 661.898 
                 30.058 
                 SiO 2   
                 124 
               
               
                   
                   
                 −944.348 
                 .052 
               
               
                   
                 L27 
                 186.291 
                 45.831 
                 SiO 2   
                 116 
               
               
                   
                   
                 1112.534 
                 .759 
               
               
                   
                 L28 
                 162.645 
                 26.119 
                 SiO 2   
                 97 
               
               
                   
                   
                 311.699 
                 16.235 
               
               
                   
                 L29 
                 67979.776 
                 16.754 
                 SiO 2   
                 90 
               
               
                   
                   
                 371.623 
                 .784 
               
               
                   
                 L30 
                 131.714 
                 57.413 
                 SiO 2   
                 71 
               
               
                   
                   
                 98.261 
                 4.425 
               
               
                   
                 L31 
                 134.217 
                 4.625 
                 CaF 2   
                 41 
               
               
                   
                   
                 44.911 
                 2.076 
               
               
                   
                 L32 
                 43.874 
                 22.782 
                 CaF 2   
                 33 
               
               
                   
                   
                 678.386 
                 2.262 
               
               
                   
                 P 
                 ∞ 
                 2.000 
                 CaF 2   
                 27 
               
               
                   
                   
                 ∞ 
                 12.000 
               
               
                   
                 IM 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 2 
               
             
             
               
                   
               
               
                 λ (193 nm) 
               
             
          
           
               
                   
                 No. 
                 r (mm) 
                 d (mm) 
                 Glass 
                 H max  (mm) 
               
               
                   
                   
               
             
          
           
               
                   
                  0 
                 ∞ 
                 15.691 
                   
                 64 
               
             
          
           
               
                   
                 21 
                 −154.467 
                 11.998 
                 SiO 2   
                 64 
               
               
                   
                   
                 446.437 
                 12.272 
                   
                 73 
               
               
                   
                 22 
                 −723.377 
                 25.9894 
                 SiO 2   
                 74 
               
               
                   
                   
                 −222.214 
                 .824 
                   
                 80 
               
               
                   
                 23 
                 920.409 
                 26.326 
                 SiO 2   
                 89 
               
               
                   
                   
                 −287.371 
                 .750 
                   
                 90 
               
               
                   
                 24 
                 499.378 
                 30.073 
                 SiO 2   
                 94 
               
               
                   
                   
                 −358.998 
                 .751 
                   
                 94 
               
               
                   
                 25 
                 238.455 
                 27.454 
                 SiO 2   
                 90 
               
               
                   
                   
                 −3670.974 
                 .750 
                   
                 89 
               
               
                   
                 26 
                 182.368 
                 13.402 
                 SiO 2   
                 81 
               
               
                   
                   
                 115.264 
                 31.874 
                   
                 72 
               
               
                   
                 27 
                 −710.373 
                 13.095 
                 SiO 2   
                 72 
               
               
                   
                   
                 −317.933 
                 2.550 
                   
                 71 
               
               
                   
                 28 
                 412.488 
                 8.415 
                 SiO 2   
                 69 
               
               
                   
                   
                 132.829 
                 32.913 
                   
                 65 
               
               
                   
                 29 
                 −184.651 
                 11.023 
                 SiO 2   
                 66 
               
               
                   
                   
                 2083.916 
                 28.650 
                   
                 71 
               
               
                   
                 30 
                 −120.436 
                 10.736 
                 SiO 2   
                 72 
               
               
                   
                   
                 −629.160 
                 16.486 
                   
                 86 
               
               
                   
                 31 
                 −213.698 
                 24.772 
                 SiO 2   
                 89 
               
               
                   
                   
                 −151.953 
                 .769 
                   
                 95 
               
               
                   
                 32 
                 11013.497 
                 48.332 
                 SiO 2   
                 115 
               
               
                   
                   
                 −202.880 
                 .750 
                   
                 118 
               
               
                   
                 33 
                 −1087.551 
                 22.650 
                 SiO 2   
                 122 
               
               
                   
                   
                 −483.179 
                 .750 
                   
                 124 
               
               
                   
                 34 
                 1797.628 
                 23.724 
                 SiO 2   
                 125 
               
               
                   
                   
                 −1285.887 
                 .751 
                   
                 125 
               
               
                   
                 35 
                 662.023 
                 23.589 
                 SiO 2   
                 124 
               
               
                   
                   
                 45816.292 
                 .750 
                   
                 123 
               
               
                   
                 36 
                 361.131 
                 22.299 
                 SiO 2   
                 119 
               
               
                   
                   
                 953.989 
                 .750 
                   
                 117 
               
               
                   
                 37 
                 156.499 
                 49.720 
                 CaF 2   
                 107 
               
               
                   
                   
                 2938.462 
                 .154 
                   
                 103 
               
               
                   
                 38 
                 377.619 
                 8.428 
                 SiO 2   
                 94 
               
               
                   
                   
                 123.293 
                 40.098 
                   
                 80 
               
               
                   
                 39 
                 −425.236 
                 10.189 
                 SiO 2   
                 78 
               
               
                   
                   
                 413.304 
                 18.201 
                   
                 74 
               
               
                   
                 40 
                 −302.456 
                 6.943 
                 SiO 2   
                 73 
               
               
                   
                   
                 190.182 
                 46.542 
                   
                 73 
               
               
                   
                 41 
                 −109.726 
                 9.022 
                 SiO 2   
                 73 
               
               
                   
                   
                 −1968.186 
                 5.547 
                   
                 89 
               
               
                   
                 42 
                 −768.656 
                 37.334 
                 CaF 2   
                 90 
               
               
                   
                   
                 −145.709 
                 .753 
                   
                 94 
               
               
                   
                 43 
                 925.552 
                 49.401 
                 CaF 2   
                 108 
               
               
                   
                   
                 −193.743 
                 .847 
                   
                 109 
               
               
                   
                 44 
                 507.720 
                 22.716 
                 CaF 2   
                 105 
               
               
                   
                   
                 −1447.522 
                 21.609 
                   
                 104 
               
               
                   
                 45 
                 −250.873 
                 11.263 
                 SiO 2   
                 104 
               
               
                   
                   
                 314.449 
                 2.194 
                   
                 105 
               
               
                   
                 46 
                 316.810 
                 28.459 
                 CaF 2   
                 106 
               
               
                   
                   
                 −1630.246 
                 4.050 
                   
                 106 
               
             
          
           
               
                   
                 AS 
                 Diagragm 
                 15.000 
                   
                 106 
               
             
          
           
               
                   
                 47 
                 312.019 
                 45.834 
                 CaF 2   
                 108 
               
               
                   
                   
                 −355.881 
                 11.447 
                   
                 108 
               
               
                   
                 48 
                 −242.068 
                 14.119 
                 SiO 2   
                 107 
               
               
                   
                   
                 312.165 
                 4.687 
                   
                 112 
               
               
                   
                 49 
                 327.322 
                 49.332 
                 SiO 2   
                 114 
               
               
                   
                   
                 −372.447 
                 14.727 
                   
                 115 
               
               
                   
                 50 
                 −234.201 
                 26.250 
                 SiO 2   
                 115 
               
               
                   
                   
                 −226.616 
                 .850 
                   
                 118 
               
               
                   
                 51 
                 203.673 
                 45.914 
                 SiO 2   
                 113 
               
               
                   
                   
                 −3565.135 
                 .751 
                   
                 111 
               
               
                   
                 52 
                 157.993 
                 29.879 
                 SiO 2   
                 94 
               
               
                   
                   
                 431.905 
                 14.136 
                   
                 90 
               
               
                   
                 53 
                 −1625.593 
                 12.195 
                 SiO 2   
                 83 
               
               
                   
                   
                 230.390 
                 .780 
                   
                 76 
               
               
                   
                 54 
                 124.286 
                 66.404 
                 SiO 2   
                 71 
               
               
                   
                   
                 538.229 
                 1.809 
                   
                 46 
               
               
                   
                 55 
                 778.631 
                 4.962 
                 CaF 2   
                 45 
               
               
                   
                   
                 43.846 
                 2.050 
                   
                 34 
               
               
                   
                 56 
                 43.315 
                 23.688 
                 CaF 2   
                 33 
               
               
                   
                   
                 1056.655 
                 2.047 
                   
                 29 
               
             
          
           
               
                   
                 P2 
                 ∞ 
                 2.000 
                 CaF 2   
                 27 
               
               
                   
                   
                 ∞ 
                 12.000 
                   
                 26 
               
               
                   
                 IM 
                 ∞ 
                   
                   
                 14 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
               
               
             
           
               
                   
                 TABLE 3 
               
               
                   
                   
               
             
             
               
                   
                 Image Side Numerical Aperture 
                 0.75 
               
               
                   
                 Image Field Diameter 
                 29 mm 
               
               
                   
                 Number of Lenses 
                 37 
               
               
                   
                 Therof CaF 2   
                 5 
               
               
                   
                 Chromatic Longitudinal Aberration 
                 CHL (500 pm) = 0.15 mm 
               
               
                   
                 Chromatic Vertical Aberration 
                 CHV (500)pm) = −0.55 mm 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 4 
               
             
             
               
                   
               
               
                 λ(193 nm) 
               
             
          
           
               
                   
                 No. 
                 r (mm) 
                 d (mm) 
                 Glass 
                 H max  (mm) 
               
               
                   
                   
               
             
          
           
               
                   
                 401 
                 −162.231 
                 7.821 
                 SiO 2   
                 65 
               
               
                   
                   
                 549.305 
                 14.754 
               
               
                   
                 402 
                 −1637.355 
                 13.618 
                 SiO 2   
                 77 
               
               
                   
                   
                 558.119 
                 14.177 
               
               
                   
                 403 
                 −1250.520 
                 21.761 
                 SiO 2   
                 89 
               
               
                   
                   
                 −266.751 
                 .103 
               
               
                   
                 404 
                 1413.418 
                 35.164 
                 SiO 2   
                 105 
               
               
                   
                   
                 −289.540 
                 .100 
               
               
                   
                 405 
                 558.984 
                 44.391 
                 SiO 2   
                 117 
               
               
                   
                   
                 −330.447 
                 .052 
               
               
                   
                 406 
                 236.035 
                 37.754 
                 SiO 2   
                 112 
               
               
                   
                   
                 2512.736 
                 .100 
               
               
                   
                 407 
                 149.568 
                 12.990 
                 SiO 2   
                 97 
               
               
                   
                   
                 108.658 
                 50.886 
               
               
                   
                 408 
                 −872.416 
                 17.292 
                 SiO 2   
                 85 
               
               
                   
                   
                 −295.279 
                 3.065 
               
               
                   
                 409 
                 −2305.329 
                 11.081 
                 SiO 2   
                 80 
               
               
                   
                   
                 175.377 
                 36.326 
               
               
                   
                 410 
                 −170.438 
                 10.667 
                 SiO 2   
                 73 
               
               
                   
                   
                 287.702 
                 33.693 
               
               
                   
                 411 
                 −176.405 
                 12.554 
                 SiO 2   
                 80 
               
               
                   
                   
                 −646.797 
                 20.615 
               
               
                   
                 412 
                 −185.487 
                 19.173 
                 SiO 2   
                 92 
               
               
                   
                   
                 −168.577 
                 .754 
               
               
                   
                 413 
                 2643.150 
                 43.274 
                 SiO 2   
                 120 
               
               
                   
                   
                 −279.867 
                 .751 
               
               
                   
                 414 
                 −1446.340 
                 26.732 
                 SiO 2   
                 129 
               
               
                   
                   
                 −431.016 
                 .751 
               
               
                   
                 415 
                 615.237 
                 32.058 
                 SiO 2   
                 134 
               
               
                   
                   
                 −1552.907 
                 .752 
               
               
                   
                 416 
                 304.657 
                 51.152 
                 SiO 2   
                 131 
               
               
                   
                   
                 −1002.990 
                 .766 
               
               
                   
                 417 
                 377.443 
                 11.011 
                 SiO 2   
                 115 
               
               
                   
                   
                 174.347 
                 61.706 
               
               
                   
                 418 
                 −265.771 
                 10.574 
                 SiO 2   
                 103 
               
               
                   
                   
                 358.610 
                 61.744 
               
               
                   
                 419 
                 −156.420 
                 17.749 
                 SiO 2   
                 104 
               
               
                   
                   
                 4276.769 
                 .752 
               
               
                   
                 420 
                 1792.611 
                 65.815 
                 CaF 2   
                 132 
               
               
                   
                   
                 −237.576 
                 .756 
               
               
                   
                 421 
                 −5418.034 
                 38.924 
                 CaF 2   
                 151 
               
               
                   
                   
                 −453.224 
                 .750 
               
               
                   
                 422 
                 2719.661 
                 63.360 
                 CaF 2   
                 157 
               
               
                   
                   
                 −324.840 
                 .750 
               
               
                   
                 423 
                 794.699 
                 30.677 
                 CaF 2   
                 146 
               
               
                   
                   
                 −7159 901 
                 44.836 
               
               
                   
                 424 
                 −265.231 
                 27.682 
                 SiO 2   
                 141 
               
               
                   
                   
                 −340.529 
                 2.566 
               
               
                   
                 425 
                 −377.893 
                 19.008 
                 SiO 2   
                 141 
               
               
                   
                   
                 322.651 
                 8.918 
               
               
                   
                 426 
                 384.063 
                 50.258 
                 CaF 2   
                 144 
               
               
                   
                   
                 −1522.566 
                 .001 
               
             
          
           
               
                   
                 AS 
                 Diaphragm 
                   
                   
                 145 
               
             
          
           
               
                   
                 427 
                 461.641 
                 73.243 
                 CaF 2   
                 149 
               
               
                   
                   
                 −346.299 
                 14.306 
               
               
                   
                 428 
                 −265.687 
                 14.512 
                 SiO 2   
                 149 
               
               
                   
                   
                 −2243.987 
                 44.637 
               
               
                   
                 429 
                 −273.302 
                 32.232 
                 SiO 2   
                 155 
               
               
                   
                   
                 −236.716 
                 .759 
               
               
                   
                 430 
                 630.915 
                 33.935 
                 SiO 2   
                 162 
               
               
                   
                   
                 −33939.086 
                 .770 
               
               
                   
                 431 
                 267.710 
                 59.062 
                 SiO 2   
                 154 
               
               
                   
                   
                 1417.026 
                 1.266 
               
               
                   
                 432 
                 186.762 
                 42.895 
                 SiO 2   
                 128 
               
               
                   
                   
                 428.787 
                 .750 
               
               
                   
                 433 
                 157.406 
                 28.844 
                 SiO 2   
                 103 
               
               
                   
                   
                 286.130 
                 12.072 
               
               
                   
                 434 
                 642.977 
                 21.646 
                 SiO 2   
                 95 
               
               
                   
                   
                 305.781 
                 .394 
               
               
                   
                 435 
                 146.258 
                 14.296 
                 SiO 2   
                 69 
               
               
                   
                   
                 95.566 
                 11.824 
               
               
                   
                 436 
                 177.258 
                 5.877 
                 CaF 2   
                 53 
               
               
                   
                   
                 48.067 
                 2.299 
               
               
                   
                 437 
                 47.757 
                 26.836 
                 CaF 2   
                 39 
               
               
                   
                   
                 545.368 
                 3.220 
               
             
          
           
               
                   
                 P4 
                 ∞ 
                 2.000 
                 CaF 2   
                 32 
               
               
                   
                   
                 ∞ 
                 12.000 
               
               
                   
                 IM 
                 ∞ 
                   
                   
                 14 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                   
                 TABLE 5 
               
             
             
               
                   
                   
               
               
                   
                 λ (248 nm) 
                   
               
             
          
           
               
                   
                 No. 
                 r (mm) 
                 d (mm) 
                 Glass 
                 H max  (mm) 
               
               
                   
                   
               
             
          
           
               
                   
                  0 
                 ∞ 
                 14.767 
                   
                   
               
               
                   
                 501 
                 −168.448 
                 7.819 
                 SiO 2   
               
               
                   
                   
                 451.839 
                 10.150 
               
               
                   
                 502 
                 −1469.667 
                 12.827 
                 SiO 2   
               
               
                   
                   
                 507.556 
                 9.846 
               
               
                   
                 503 
                 3953.186 
                 24.517 
                 SiO 2   
               
               
                   
                   
                 −255.806 
                 .109 
               
               
                   
                 504 
                 677.358 
                 35.314 
                 SiO 2   
               
               
                   
                   
                 −291.838 
                 .717 
               
               
                   
                 505 
                 514.352 
                 37.652 
                 SiO 2   
               
               
                   
                   
                 −349.357 
                 2.388 
                   
                 102 
               
               
                   
                 506 
                 47.966 
                 31.567 
                 SiO 2   
               
               
                   
                   
                 4511.896 
                 .103 
               
               
                   
                 507 
                 173.084 
                 12.702 
                 SiO 2   
               
               
                   
                   
                 114.678 
                 44.986 
               
               
                   
                 508 
                 −699.118 
                 16.715 
                 SiO 2   
               
               
                   
                   
                 −255.168 
                 3.212 
               
               
                   
                 509 
                 −704.667 
                 11.272 
                 SiO 2   
               
               
                   
                   
                 204.972 
                 33.860 
               
               
                   
                 510 
                 −169.644 
                 12.141 
                 SiO 2   
                 71 
               
               
                   
                   
                 283.339 
                 36.451 
               
               
                   
                 511 
                 −164.668 
                 11.842 
                 SiO 2   
               
               
                   
                   
                 −1145.627 
                 22.777 
               
               
                   
                 512 
                 −199.780 
                 20.265 
                 SiO 2   
               
               
                   
                   
                 −176.684 
                 7.310 
               
               
                   
                 513 
                 8844.587 
                 46.194 
                 SiO 2   
               
               
                   
                   
                 −273.661 
                 .761 
               
               
                   
                 514 
                 −1811.014 
                 32.660 
                 SiO 2   
               
               
                   
                   
                 −386.108 
                 .755 
               
               
                   
                 515 
                 626.689 
                 42.026 
                 SiO 2   
                 143 
               
               
                   
                   
                 −896.109 
                 .821 
               
               
                   
                 516 
                 336.397 
                 54.598 
                 SiO 2   
               
               
                   
                   
                 −1002.851 
                 .752 
               
               
                   
                 517 
                 411.928 
                 12.364 
                 SiO 2   
               
               
                   
                   
                 183.595 
                 73.688 
               
               
                   
                 518 
                 −237.160 
                 12.074 
                 SiO 2   
                 110 
               
               
                   
                   
                 339.922 
                 67.674 
               
               
                   
                 519 
                 −181.378 
                 19.614 
                 SiO 2   
               
               
                   
                   
                 3323.801 
                 .795 
               
               
                   
                 520 
                 1648.704 
                 72.249 
                 SiO 2   
               
               
                   
                   
                 −259.967 
                 .772 
               
               
                   
                 521 
                 −3288.150 
                 36.331 
                 SiO 2   
               
               
                   
                   
                 −547.040 
                 .754 
               
               
                   
                 522 
                 3160.321 
                 71.293 
                 SiO 2   
               
               
                   
                   
                 −337.191 
                 .750 
                   
                 172 
               
               
                   
                 523 
                 794.782 
                 31.332 
                 SiO 2   
               
               
                   
                   
                 3890.718 
                 55.484 
               
               
                   
                 524 
                 −273.219 
                 30.190 
                 SiO 2   
                 152 
               
               
                   
                   
                 −316.643 
                 .894 
               
               
                   
                 525 
                 −358.789 
                 20.418 
                 SiO 2   
               
               
                   
                   
                 330.466 
                 15.787 
               
               
                   
                 526 
                 423.693 
                 48.720 
                 SiO 2   
               
               
                   
                   
                 −3000.977 
                 .034 
               
               
                   
                 527 
                 584.671 
                 78.378 
                 SiO 2   
                 159 
               
               
                   
                 AS 
                 −341.375 
                 13.393 
               
               
                   
                 528 
                 −276.351 
                 6.015 
                 SiO 2   
               
               
                   
                   
                 −2430.384 
                 49.784 
               
               
                   
                 529 
                 −282.253 
                 33.801 
                 SiO 2   
               
               
                   
                   
                 −247.816 
                 .751 
               
               
                   
                 530 
                 497.380 
                 43.718 
                 SiO 2   
                 170 
               
               
                   
                   
                 −593481.158 
                 .762 
               
               
                   
                 531 
                 257.876 
                 58.302 
                 SiO 2   
               
               
                   
                   
                 1283.553 
                 .760 
               
               
                   
                 532 
                 192.763 
                 41.022 
                 SiO 2   
               
               
                   
                   
                 379.416 
                 1.212 
               
               
                   
                 533 
                 158.692 
                 33.559 
                 SiO 2   
               
               
                   
                   
                 318.371 
                 10.419 
               
               
                   
                 534 
                 602.941 
                 22.348 
                 SiO 2   
               
               
                   
                   
                 312.341 
                 .449 
               
               
                   
                 535 
                 151.612 
                 13.858 
                 SiO 2   
               
               
                   
                   
                 94.174 
                 13.001 
               
               
                   
                 536 
                 178.383 
                 6.551 
                 SiO 2   
               
               
                   
                   
                 47.957 
                 2.052 
               
               
                   
                 537 
                 47.759 
                 28.153 
                 SiO 2   
               
               
                   
                   
                 457.020 
                 3.585 
               
               
                   
                 P5 
                 ∞ 
                 2.000 
                 SiO 2   
               
               
                   
                   
                 ∞ 
               
               
                   
                 IM 
               
               
                   
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 6 
               
             
             
               
                   
               
               
                 λ(193 nm) 
               
             
          
           
               
                   
                 No. 
                 r (mm) 
                 d (mm) 
                 Glass 
                 H max  (mm) 
               
               
                   
                   
               
             
          
           
               
                   
                  0 
                 ∞ 
                 13.589 
                   
                 63.2 
               
             
          
           
               
                   
                 601 
                 −153.8668 
                 8.593 
                 SiO 2   
                   
               
               
                   
                   
                 536.387 
                 13.446 
               
               
                   
                 602 
                 −489.958 
                 16.326 
                 SiO 2   
               
               
                   
                   
                 −180.299 
                 8.335 
               
               
                   
                 603 
                 −139.921 
                 17.269 
                 SiO 2   
               
               
                   
                   
                 −183.540 
                 .726 
               
               
                   
                 604 
                 −5959.817 
                 27.191 
                 SiO 2   
               
               
                   
                   
                 −213.388 
                 .720 
               
               
                   
                 605 
                 540.568 
                 28.565 
                 SiO 2   
               
               
                   
                   
                 −384.411 
                 .721 
                   
                 100.4 
               
               
                   
                 606 
                 228.447 
                 27.846 
                 SiO 2   
               
               
                   
                   
                 39808.827 
                 1.596 
               
               
                   
                 607 
                 145.747 
                 26.420 
                 SiO 2   
               
               
                   
                   
                 99.912 
                 29.130 
               
               
                   
                 608 
                 551.820 
                 28.093 
                 SiO 2   
               
               
                   
                   
                 125.153 
                 27.708 
               
               
                   
                 609 
                 −224.142 
                 16.347 
                 SiO 2   
               
               
                   
                   
                 −120.259 
                 3.704 
               
               
                   
                 610 
                 −120.684 
                 7.531 
                 SiO 2   
                 60.7 
               
               
                   
                   
                 190.217 
                 30.347 
               
               
                   
                 611 
                 −127.179 
                 9.201 
                 SiO 2   
               
               
                   
                   
                 −2280.949 
                 10.944 
               
               
                   
                 612 
                 −402.034 
                 21.512 
                 SiO 2   
               
               
                   
                   
                 −163.852 
                 .720 
               
               
                   
                 613 
                 558.842 
                 36.296 
                 SiO 2   
               
               
                   
                   
                 −232.880 
                 .721 
               
               
                   
                 614 
                 326.378 
                 40.631 
                 SiO 2   
                 102.3 
               
               
                   
                   
                 −458.721 
                 1.006 
               
               
                   
                 615 
                 243.250 
                 21.969 
                 SiO 2   
               
               
                   
                   
                 1849.289 
                 .953 
               
               
                   
                 616 
                 1818.775 
                 11.594 
                 SiO 2   
               
               
                   
                   
                 120.678 
                 44.346 
               
               
                   
                 617 
                 −193.008 
                 8.915 
                 SiO 2   
               
               
                   
                   
                 164.718 
                 41.514 
                   
                 71.6 
               
               
                   
                 618 
                 −127.692 
                 10.925 
                 SiO 2   
               
               
                   
                   
                 522.864 
                 4.106 
               
               
                   
                 619 
                 427.581 
                 53.250 
                 CaF 2   
               
               
                   
                   
                 −161.175 
                 .720 
                   
                 97.4 
               
               
                   
                 620 
                 472.871 
                 36.987 
                 CaF 2   
                 106.2 
               
               
                   
                   
                 −413.834 
                 5.594 
                   
                 106.7 
               
               
                   
                 621 
                 −527.170 
                 9.730 
                 SiO 2   
                 106.2 
               
               
                   
                   
                 249.617 
                 5.154 
                   
                 107.7 
               
               
                   
                 622 
                 282.914 
                 48.128 
                 CaF 2   
                 108.6 
               
               
                   
                   
                 −361.054 
                 9.000 
                   
                 109.3 
               
               
                   
                 AS 
                   
                 .011 
                   
                 108.2 
               
               
                   
                 623 
                 513.367 
                 44.253 
                 CaF 2   
               
               
                   
                   
                 −251.673 
                 14.542 
                   
                 108.7 
               
               
                   
                 624 
                 −181.317 
                 14.388 
                 SiO 2   
                 107.9 
               
               
                   
                   
                 −1446.451 
                 34.190 
                   
                 113.7 
               
               
                   
                 625 
                 −221.707 
                 30.966 
                 SiO 2   
                 114.7 
               
               
                   
                   
                 −174.183 
                 .778 
                   
                 119.4 
               
               
                   
                 626 
                 367.930 
                 29.615 
                 SiO 2   
               
               
                   
                   
                 −5635.900 
                 .727 
               
               
                   
                 627 
                 149.485 
                 42.977 
                 SiO 2   
               
               
                   
                   
                 478.121 
                 .974 
               
               
                   
                 628 
                 152.986 
                 28.094 
                 SiO 2   
               
               
                   
                   
                 224.466 
                 14.618 
               
               
                   
                 629 
                 794.048 
                 14.783 
                 SiO 2   
               
               
                   
                   
                 152.177 
                 2.330 
               
               
                   
                 630 
                 109.931 
                 39.083 
                 SiO 2   
               
               
                   
                   
                 53.759 
                 5.493 
               
               
                   
                 631 
                 52.584 
                 31.677 
                 CaF 2   
               
               
                   
                   
                 582.406 
                 2.674 
               
             
          
           
               
                   
                 P6 
                 ∞ 
                 2.000 
                 CaF 2   
                   
               
               
                   
                   
                 ∞ 
                 12.521 
               
               
                   
                 IM 
                 ∞ 
                 .000 
                   
                 14.5