Patent Publication Number: US-7718922-B2

Title: Optical processing apparatus

Description:
RELATED APPLICATIONS 
   This application is a divisional application of Ser. No. 10/842,418, filed May 11, 2004 as U.S. Pat. No. 7,419,085, which claims priority of Japanese Patent application Nos. 2003-134097, filed May 13, 2003; 2003-136975, filed May 15, 2003 and 2003-136976, filed May 15, 2003, the contents of which are herewith incorporated by reference. 

   FIELD OF THE INVENTION 
   The present invention relates to a optical processing apparatus for processing by utilizing light energy. 
   BACKGROUND OF THE INVENTION 
   Hitherto, a optical processing apparatus comprises light energy output means for producing light energy, a first optical path for guiding the light energy into a work, optical means disposed in the first optical path for shaping the light energy, a second optical path sharing part of the first optical path for guiding the light from the work to photo receiving means, and driving means for changing the relative positions of at least the optical means and work. 
   Such conventional processing apparatus by light energy is disclosed in Japanese Laid-open Patent No. 2002-1521. 
   SUMMARY OF THE INVENTION 
   A optical processing apparatus comprising: 
   light energy output means for producing light energy; 
   a first optical path for guiding the light energy into a work; 
   optical means disposed in the first optical path for shaping the light energy; 
   a second optical path sharing part of the first optical path for guiding the light from the work to photo receiving means; and 
   driving means for changing the relative positions of at least the optical means and work, 
   in which a judging part of a color different from deposits sticking to the optical means is provided, and the optical means is positioned at the judging part, and the photo receiving means detects the sticking status of deposits to the optical means. 
   A optical processing apparatus comprising: 
   light energy output means for producing light energy; 
   a first optical path for guiding the light energy into a work; 
   optical means disposed in the first optical path for shaping the light energy; 
   a second optical path sharing part of the first optical path for guiding the light from the work to photo receiving means, driving means for changing the relative positions of at least the optical means and work; 
   wire solder feed means for feeding a wire solder closely to a processing position of the work; 
   leading end shape detecting means for detecting the shape of leading end portion of the wire solder; and 
   solder fusing part heating means disposed at a position different from the processing position for heating the solder fusing part, in which the driving means moves the leading end of the wire 
   solder to the solder fusing part when the leading end portion of the wire solder is not needed, and the light energy is emitted to the leading end portion of the wire solder. 
   A optical processing apparatus comprising: 
   light energy output means for producing light energy; 
   a first optical path for guiding the light energy into a work; 
   optical means disposed in the first optical path for shaping the light energy; 
   a second optical path sharing part of the first optical path for guiding the light from the work to photo receiving means; 
   driving means for changing the relative positions of at least the optical means and work; 
   wire solder feed means for feeding a wire solder closely to a processing position of the work; and 
   wire solder leading end position detecting means for detecting at least the position of leading end portion of the wire solder, and detecting failure of soldering when the leading end portion of the wire solder is not positioned at the processing position. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a schematic explanatory diagram in exemplary embodiment 1 of the invention. 
       FIG. 2  is a schematic explanatory diagram in exemplary embodiment 2 of the invention. 
       FIG. 3  is a schematic explanatory diagram in exemplary embodiment 3 of the invention. 
       FIG. 4  is a schematic explanatory diagram in exemplary embodiment 4 of the invention. 
       FIG. 5  is a schematic explanatory diagram in exemplary embodiment 5 of the invention. 
       FIG. 6  is a schematic explanatory diagram in exemplary embodiment 6 of the invention. 
       FIG. 7  is a schematic explanatory diagram in exemplary embodiment 7 of the invention. 
       FIG. 8  is an explanatory diagram showing the relation when deposits and background are same in color. 
       FIG. 9  is an explanatory diagram showing the relation when deposits and background are different in color. 
       FIG. 10  is an explanatory diagram in exemplary embodiment 8 of the invention. 
       FIG. 11  is an explanatory diagram in exemplary embodiment 9 of the invention. 
       FIG. 12  is an explanatory diagram in exemplary embodiment 10 of the invention. 
       FIG. 13  is an explanatory diagram in exemplary embodiment 11 of the invention. 
       FIG. 14  is an explanatory diagram in exemplary embodiments 12 and 13 of the invention. 
       FIG. 15  is an explanatory diagram in exemplary embodiment 14 of the invention. 
       FIG. 16  is an explanatory diagram in exemplary embodiment 15 of the invention. 
       FIG. 17  is an explanatory diagram in exemplary embodiment 16 of the invention. 
       FIG. 18  is an explanatory diagram in exemplary embodiment 17 of the invention. 
       FIG. 19  is an explanatory diagram when the wire solder leading end shape is in normal state. 
       FIG. 20A  is an explanatory diagram when the wire solder leading end shape is in abnormal state. 
       FIG. 20B  is an explanatory diagram when the wire solder leading end shape is in abnormal state. 
       FIG. 20C  is an explanatory diagram when the wire solder leading end shape is in abnormal state. 
       FIG. 20D  is an explanatory diagram when the wire solder leading end shape is in abnormal state. 
   

   DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS 
   However, in the detecting method of sticking state of deposits in the conventional optical processing apparatus, if a same color as deposits sticking to the optical means is present in a position of background of the optical means, the sticking status cannot be detected accurately. 
   The invention is devised to detect the sticking status accurately if a same color as deposits sticking to the optical means is present in a position of background of the optical means. Examples of the invention are described in exemplary embodiments 1 to 7 below. 
   Exemplary Embodiment 1 
   A first exemplary embodiment of the invention is described below while referring to  FIGS. 1 ,  8 , and  9 . Light energy output means  101  produces light energy as processing energy source. A first optical path  102  of light energy guides the light energy into a work  106 . A half mirror  103  has a characteristic of transmitting wavelength components of light energy and reflecting visible light components. Optical means  104  shapes the light energy, and focuses the light emitted from the light energy output means  101  into a light of required beam diameter. Its focusing characteristic is determined in conformity to the divergent property of light from the light energy output means  101 . A detachable protective glass  105  prevents foreign matter of processing from sticking to the optical means  104 . By replacing it when the light energy output is lowered due to foreign matter deposits, the optical output is recovered, and the maintenance is facilitated. The work  106  is the object of processing in this apparatus. A mirror  107  guides the light reflected from the work  106  into photo receiving means. Photo receiving means  108  detects the light reflected from the work  106  as an image of the work. An optical path  109  is an optical path of the photo receiving means. The block from the light energy output means  101  to the optical path  109  is called a processing head. Driving means  110  changes relative positions of the work  106  and deposit judging part  111  and processing head. The deposit judging part  111  of plural different colors can judge the deposits. 
   In the optical processing apparatus having such configuration, the operation is described below. 
   Light emitted from the light energy output means  101  passes the half mirror  3  by way of the first optical path  102 , and enters the optical means  4 . This light is focused into a necessary size, and is emitted to the work  106  by way of the protective glass  105 , and the work  106  is machined by the focused light. 
   On the other hand, the light reflected by the work  106  propagates the second optical path  109  by way of the protective glass  105 , optical means  104 , and half mirror  103 . The light is reflected again by the mirror  107 , and enters the photo receiving means  108 . 
   The driving means  110  can change the relative positions of the work  106 , deposit judging part  111 , and processing head. On the basis of the image information of the work  106  obtained from the photo receiving means  108 , the processing head is moved to the processing position of the work  106  by the driving means  110 , and a light beam is emitted from the processing head and processing is done. 
   If the work and deposits are of same color, if attempted to detect deposits at the processing position, it is hard to distinguish the deposits as shown in  FIG. 8 . Therefore, to detect the deposits in the background of a different color from the deposits, in deposits detection operation of the protective glass  105 , the color of the work  106  is detected, and the processing head is moved by the driving means  110  to the deposits judging part  111  of a most different color from the deposits sticking to the protective glass  105 . Then the photo receiving means  108  detects the sticking status of deposits. 
   Deposits can be roughly predicted from the work  106  or processing process (soldering, cutting, etc.), and the deposits judging part  111  is determined accordingly. Not limited to a single detection of deposits, by continuing detection by moving sequentially to deposits detecting parts  111  of different colors, deposits of plural colors can be detected effectively. 
   By this configuration, processing is possible regardless of processing position of the work or the location of the deposits judging part. 
   Specific examples of light energy include laser and lamp, the photo receiving means is realized by camera, and the image correcting means is a lens. 
   Thus, in the conventional method of detecting the sticking status of deposits, in the location of same color as the deposits sticking to the optical means, the sticking status cannot be detected accurately. By contrast, in the exemplary embodiment, deposits judging parts  111  of plural different colors are provided, and judging from the color of the work  106 , by moving the positions sequentially from the judging part of the most different color from the deposits sticking to the optical means  104 , the sticking status of deposits to the optical means  104  can be easily detected by the photo receiving means  108 . 
   Exemplary Embodiment 2 
   A second exemplary embodiment of the invention is described below while referring to  FIG. 2 . 
   In  FIG. 2 , the processing head comprising the light energy output means  101  to optical path  109 , the driving means  110 , and the deposits judging part  111  are same as in exemplary embodiment 1, and the explanation is omitted. 
   What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work  106 . 
   In the optical processing apparatus thus configured, the operation is explained. Light emitted from the light energy output means  101  passes the half mirror  103  along the first optical path  102 , and enters the optical means  104 . This light is focused into a necessary size, and is emitted to the work  106  by way of the protective glass  105 . The work  106  is machined by this focused light. The light reflected by the work  106  passes through the protective glass  105  and optical means  104 , and is reflected by the half mirror  103  to get into the second optical path  109 , and is reflected again by the mirror  107 , and enters the photo receiving means  108 . This area is called the processing head, and is installed at the lower side of the work, and the lower side of the work  106  can be machined. 
   Therefore, if the processing side of the work  106  is at the lower side, it is not required to invert the work  106 , and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work  106  or dropping of the work or parts mounted thereon. 
   Exemplary Embodiment 3 
   A third exemplary embodiment of the invention is described below while referring to  FIG. 3 . 
   In  FIG. 3 , the processing head comprising the light energy output means  101  to optical path  109 , the driving means  110 , and the deposits judging part  111  are same as in exemplary embodiment 1, and the explanation is omitted. 
   What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work  106 , and that it further comprises display means  112  for displaying the image of the work  106  obtained by the photo receiving means  108 , recognition means  113  for detecting the position of the processing head for leading out the processing position, and processing position detecting means  114  for leading out the processing position. In this exemplary embodiment, if the processing side of the work  106  is at the lower side, it is not required to invert the work  106 , and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work  106  or dropping of the work or parts mounted thereon. 
   Moreover in this exemplary embodiment, the processing position detecting means  114  detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means  113 . This signal is sent to the display means  112 , and is displayed as an image. The image of the work  106  is converted into an electric signal by the photo receiving means  108 , and is displayed as an image of processing position of the work  106  by the display means  112 . 
   Accordingly, if the processing area is small, or the processing area is at the lower side of the work and is hard to recognize visually, it can be observed easily, or if the position is deviated, it can be easily detected. 
   The processing position detecting means  114  is, for example, a computer, and the display means  112  is a CRT or LCD display device. 
   Having such display means  112 , if the processing side is at the lower side of the work  106  and is hard to recognize visually, position teaching or correction confirmation may be easily done. Further, by displaying the image of the work  106  and the present light beam position in the display means  112 , the location of the present light beam in the work or the processing position can be easily known. Also because of off-line teaching, the position can be taught without stopping the production line. 
   Exemplary Embodiment 4 
   A fourth exemplary embodiment of the invention is described below while referring to  FIG. 4 . 
   In  FIG. 4 , the processing head comprising the light energy output means  101  to optical path  109 , the driving means  110 , and the deposits judging part  111  are same as in exemplary embodiment 1, and the explanation is omitted. 
   What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work  106 , and that it further comprises display means  112  for displaying the image of the work  106  obtained by the photo receiving means  108 , recognition means  113  for detecting the position of the processing head for leading out the processing position, processing position detecting means  114  for leading out the processing position, and processing position detection correcting means  115 . 
   In the optical processing apparatus thus configured, the operation is explained below. 
   In this exemplary embodiment, if the processing side of the work  106  is at the lower side, it is not required to invert the work  106 , and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work  106  or dropping of the work or parts mounted thereon. 
   Moreover in this exemplary embodiment, the processing position detecting means  114  detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means  113 . This signal is sent to the display means  112 , and is displayed as an image. The image of the work  106  is converted into an electric signal by the photo receiving means  108 , and is displayed as an image of processing position of the work  106  by the display means  112 . Herein, the processing position detection correcting means  115  detects the difference between the position of processing area of the work  106  by the photo receiving means  108  and the position of light beam emitted from the processing head, and sends the information to the processing position detecting means  114 . The processing position detecting means  114  positions the processing head by compensating so as to eliminate the position error by the driving means  110  on the basis of this error position information, and processing is started by manipulating the output means  101  of the processing head. 
   The processing head position recognizing means is realized, for example, by an encoder of driving means, and the position detection correcting means is an image recognition device. 
   Thus, by correcting the difference of the emitting position of light beam and processing position of the work  106  by the driving means  110 , the processing precision can be enhanced. 
   Exemplary Embodiment 5 
   A fifth exemplary embodiment of the invention is described below while referring to  FIG. 5 . 
   In  FIG. 5 , the processing head comprising the light energy output means  101  to optical path  109 , the driving means  110 , and the deposits judging part  111  are same as in exemplary embodiment 1, and the explanation is omitted. What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work  106 , and that it further comprises display means  112  for displaying the image of the work  106  obtained by the photo receiving means  108 , recognition means  113  for detecting the position of the processing head for leading out the processing position, processing position detecting means  114  for leading out the processing position, processing position detection correcting means  115 , and image memory means  116 . 
   In the optical processing apparatus thus configured, the operation is explained below. 
   In this exemplary embodiment, if the processing side of the work  106  is at the lower side, it is not required to invert the work  106 , and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work  106  or dropping of the work or parts mounted thereon. 
   Moreover in this exemplary embodiment, the processing position detecting means  114  detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means  113 . This signal is sent to the display means  112 , and is displayed as an image. The image of the work  106  is converted into an electric signal by the photo receiving means  108 , and is displayed as an image of processing position of the work  106  by the display means  112 . Herein, the processing position detection correcting means  115  detects the difference between the position of processing area of the work  106  by the photo receiving means  108  and the position of light beam emitted from the processing head, and sends the information to the processing position detecting means  114 . The processing position detecting means  114  positions the processing head by compensating so as to eliminate the position error by the driving means  110  on the basis of this error position information, and processing is started by manipulating the output means  101  of the processing head. 
   The image memory means  116  stores image data of the work  106 . The image memory means  116  displays its image in the display means  112 . The present light beam emitting position is also displayed in the display means  112  by means of the processing position detecting means  114 . 
   Specific examples of image data include CAD data, scanner image, and camera image. 
   By the image memory means  116  for preliminarily storing the image showing the processing area, it is easy to move to the processing area. 
   Exemplary Embodiment 6 
   A sixth exemplary embodiment of the invention is described below while referring to  FIG. 6 . 
   In  FIG. 6 , the processing head comprising the light energy output means  101  to optical path  109 , the driving means  110 , and the deposits judging part  111  are same as in exemplary embodiment 1, and the explanation is omitted. 
   What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work  106 , and that it further comprises display means  112  for displaying the image of the work  106  obtained by the photo receiving means  108 , recognition means  113  for detecting the position of the processing head for leading out the processing position, processing position detecting means  114  for leading out the processing position, processing position detection correcting means  115 , image memory means  116 , and a wire solder feed device  117  for feeding a wire solder to the processing area. 
   In the optical processing apparatus thus configured, the operation is explained below. 
   In this exemplary embodiment, if the processing side of the work  106  is at the lower side, it is not required to invert the work  106 , and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work  106  or dropping of the work or parts mounted thereon. 
   Moreover, the processing position detecting means  114  detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means  113 . This signal is sent to the display means  112 , and is displayed as an image. The image of the work  106  is converted into an electric signal by the photo receiving means  108 , and is displayed as an image of processing position of the work  106  by the display means  112 . Herein, the processing position detection correcting means  115  detects the difference between the position of processing area of the work  106  by the photo receiving means  108  and the position of light beam emitted from the processing head, and sends the information to the processing position detecting means  114 . The processing position detecting means  114  positions the processing head by compensating so as to eliminate the position error by the driving means  110  on the basis of this error position information, and processing is started by manipulating the output means  101  of the processing head. 
   The image memory means  116  stores image data of the work  106 . The image memory means  116  displays its image in the display means  112 . The present light beam emitting position is also displayed in the display means  112  by means of the processing position detecting means  114 . 
   Specific examples of image data include CAD data, scanner image, and camera image. 
   Exemplary Embodiment 7 
   A seventh exemplary embodiment of the invention is described below while referring to  FIG. 7 . 
   In  FIG. 7 , the processing head comprising the light energy output means  101  to optical path  109 , the driving means  110 , and the deposits judging part  111  are same as in exemplary embodiment 1, and the explanation is omitted. 
   What is characteristic of this exemplary embodiment is that these members are disposed at the lower side (the direction of gravity) of the work  106 , and that it further comprises display means  112  for displaying the image of the work  106  obtained by the photo receiving means  108 , recognition means  113  for detecting the position of the processing head for leading out the processing position, processing position detecting means  114  for leading out the processing position, processing position detection correcting means  115 , image memory means  116 , a wire solder feed device  117  for feeding a wire solder to the processing area, and image distortion compensating means  118  for compensating the image distorted the optical means  104 . 
   In the optical processing apparatus thus configured, the operation is explained below. 
   In this exemplary embodiment, if the processing side of the work  106  is at the lower side, it is not required to invert the work  106 , and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work  106  or dropping of the work or parts mounted thereon. 
   Moreover, the processing position detecting means  114  detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means  113 . This signal is sent to the display means  112 , and is displayed as an image. The image of the work  106  is converted into an electric signal by the photo receiving means  108 , and is displayed as an image of processing position of the work  106  by the display means  112 . Herein, the processing position detection correcting means  115  detects the difference between the position of processing area of the work  106  by the photo receiving means  108  and the position of light beam emitted from the processing head, and sends the information to the processing position detecting means  114 . The processing position detecting means  114  positions the processing head by compensating so as to eliminate the position error by the driving means  110  on the basis of this error position information, and processing is started by manipulating the output means  101  of the processing head. 
   The image memory means  116  stores image data of the work  106 . The image memory means  116  displays its image in the display means  112 . The present light beam emitting position is also displayed in the display means  112  by means of the processing position detecting means  114 . 
   Specific examples of image data include CAD data, scanner image, and camera image. 
   Thus, by the image distortion compensating means  118  disposed before the photo receiving means  108 , a distortion-free image of the work  106  can be obtained in the photo receiving means  108 . As a result, deviation of processing position or size of light focusing diameter can be easily known, and the teaching time is shortened and processing of high precision is realized. As described in the foregoing exemplary embodiments, according to the invention, the sticking status of deposits can be detected more accurately than in the prior art, and the more accurate processing is possible than in the prior art. 
   Incidentally, in the conventional optical processing apparatus and the production facility using the same, if the wire solder is not supplied normally, the worker visually detects defective soldering after the soldering process, and stops the operation manually. At this time, the worker cuts of f the wire solder manually, and restarts the operation manually. 
   Yet, detection timing of defective feed of wire solder occurs often after occurrence of defective soldering, and the soldering process must be repeated, and an extra step takes place every time. 
   The invention presents a optical processing apparatus capable of solving such problems in the conventional optical processing apparatus. An example of the invention is explained in exemplary embodiment 8. 
   The invention prevents defective soldering from occurring. If the processing side is at the lower side of the work, it is not required to invert the work. While holding the wire solder leading end in a normal state and also other positions in normal state, a stable soldering process of high quality can be continued. Further according to the invention, position teaching and correction confirmation can be done easily. If the positioning precision of the work is poor, a high precision of processing position is obtained. Moreover, since the processing area can be taught while observing the image of the work, off-line teaching is possible. The image distortion is small, and the precision is not lowered in the case of teaching, confirming the correction, or recognizing and compensating. 
   Exemplary Embodiment 8 
   An eighth exemplary embodiment of the invention is described below while referring to  FIG. 10 . 
   Output means  201  produces a light energy. A first optical path  202  shows an optical path of the light energy for guiding the light energy to the work. A half mirror  203  has a function of transmitting wavelength components of light energy, and reflecting visible ray components. Optical means  204  shapes the light energy, and focuses the light emitted from the light energy output means  201  into a necessary beam diameter. Its focusing characteristic is determined depending on the divergent characteristic of the light energy. A protective glass  205  is detachable, and prevents foreign matter generated in processing from sticking to the optical means  204 . If the light energy output is lowered due to deposits of foreign matter, it is replaced and the optical output is recovered, and the maintenance is facilitated. A work  206  is the object of processing of this apparatus. A mirror  207  guides the light of the work to photo receiving means  208 . The photo receiving means  208  is means for viewing the image of the work. A second optical path  209  shows an optical path of the photo receiving means  208 . A processing head is composed of these elements from the light energy output mean  201  to the second optical path  209 . 
   Driving means  210  changes relative positions of the work  206  and optical means  204 . First moving means  212  moves the processing head in the vertical direction of the work  206 . Second moving means  213  moves a wire solder feed device  211  in the vertical direction of the work  206 . Third moving means  214  moves the wire solder feed device  211  in the lateral direction of the work  206 . Fourth moving means  215  moves the wire solder feed device  211  in a direction of drawing an arc of the work  206 . Display means  216  displays the image of the work  206  obtained from the photo receiving means  208 . 
   Recognition means  217  detects the position of the processing head. Processing position detecting means  218  detects the position of light beam emitted from the processing head on the basis of the information of the processing head position recognition means  217 . Processing position detection correcting means  219  detects the difference between the position of processing area of the work  206  by the photo receiving means  208  and the position of light beam emitted from the processing head, and sends the information to the processing position detecting means  218 . Image memory means  220  stores image data of the work  206 . Image distortion compensating means  221  is disposed between the mirror  207  and photo receiving means  208  in order to compensate the image distorted by the optical means  204 . 
   Leading end shape detecting means  222  detects the leading end shape of wire solder. A solder fusing part  223  is a position for discarding unnecessary portion and fusing and sticking as solder in order to keep the solder leading end portion in an appropriate state. A drop preventive part  224  is a part for preventing drop of unnecessary solder provided at the lower side in the direction of gravity to the solder fusing part  223 . 
   In the optical processing apparatus thus configured, the operation is explained. 
   First of all, light emitted from the light energy output means  201  passes the half mirror  203  along the first optical path  202 , and enters the optical means  204 , in which this light is focused into a necessary size, and is emitted to the work  206  by way of the protective glass  205 . The work  206  is machined by this focused light. The light reflected by the work  206  passes through the protective glass  205  and optical means  204 , and is reflected by the half mirror  203  to get into the second optical path  209 , and is reflected again by the mirror  207 , and enters the photo receiving means  208  by way of the image distortion compensating means  221 . 
   In processing, the driving means  210  moves the processing head and the work  206  relatively, and positions the light beam to the processing area. 
   The wire solder feed means  211  feeds the solder to the heated irradiation position and performs soldering when the light beam is emitted to the specified position of the work by the processing head. At this time, the first moving means  212  adjusts the irradiation diameter depending on the work, and the second moving means  213  and third moving means  214  adjust the wire solder feed position depending on the change of irradiation diameter. Further, the fourth moving means  215  adjusts the wire solder feed position  211  so that the wire solder feed means  211  may not interfere with the side wall or the like in the apparatus depending on the shape of the work  206 . 
   The processing position detecting means  218  detects the position of the light beam emitted from the processing head on the basis of the information of the processing head position recognition means  217 , and this signal is sent to the display means  216 , and displayed as an image. The image of the work  206  is converted into an electric signal by the photo receiving means  208 , and is displayed as the image of the processing area of the work  206  by the display means  216 . 
   The processing position detecting means  218  detects the position of the light beam emitted from the processing head on the basis of the information of the processing head position recognition means  217 . This signal is sent to the display means  216 , and is displayed as an image. The image of the work  206  is converted into an electric signal by the photo receiving means  208 , and is displayed as the image of the processing area of the work  206  by the display means  216 . Herein, the processing position detection correcting means  219  detects the difference between the position of processing area of the work  206  by the photo receiving means  208  and the position of light beam emitted from the processing head, and sends the information to the processing position detecting means  218 . The processing position detecting means  218  positions the processing head so as to eliminate the position error by the driving means  210  on the basis of this error position information, and processing is started by manipulating the light energy output means  201  of the processing head. 
   The leading end shape detecting means  222  judges the leading end shape of wire solder. If judged to be abnormal, the driving means  210  moves the wire solder leading end portion to the solder fusing part, and light beam is emitted by the light energy output means  201 , and the solder fusing part  223  is heated over the solder melting point. Consequently, the wire solder feed means  211  feeds the wire solder, and presses to the solder fusing part, and an unnecessary portion of leading end is fused and adhered to the solder fusing part  223 . At this time, if the wire solder leading end falls down, it is received by the unnecessary solder drop preventive part  224 , and hence it does not stick to the protective glass or the like. In this way, while keeping the wire solder leading end in normal state and other parts also in normal state, stable soldering process of high quality can be continued. 
   The light beam may be emitted anywhere as far as above the solder fusing part, and the waste solder can be fused by its heat conduction, and it is also possible to prevent the light beam from being emitted to the unnecessary solder drop preventive part  224 . Further, by using a material capable of transmitting the light beam in the unnecessary solder drop preventive part  224 , effects of heat can be prevented. 
   Further, if the processing side of the work  206  is at the lower side, it is not required to invert the work  206 , and inverting device is not needed. Hence, it is free from risk of dislocation due to inversion of the work  206  or dropping of the work or parts mounted thereon. 
   In an abnormal state of the wire solder leading end, in particular, in a folded state, if pressing directly to the solder fusing part  223 , only the folded part is fused, and the folded wire solder leading end may fall down. At this time, however, it is received by the unnecessary solder drop preventive part  224 , and hence it does not stick to the protective glass or the like. In this way, while keeping the wire solder leading end in normal state and other parts also in normal state, stable soldering process of high quality can be continued. 
   The processing position detecting means  218  detects the position of the light beam emitted from the processing head on the basis of the information of the processing head position recognition means  217 . This signal is sent to the display means  216 , and is displayed as an image, and the image of the work  206  is converted into an electric signal by the photo receiving means  208 , and is displayed as the image of the processing area of the work  206  by the display means  216 . Therefore, if the processing area is small or the processing area is at the lower side of the work and is hard to be recognized visually, it can be easily observed, and if the position is deviated, it can be recognized easily. 
   Further, by the image distortion correcting means  221  disposed before the photo receiving means  208 , the image distortion can be suppressed, and the precision is not lowered at the time of teaching, checking correction or compensating recognition. Thus, according to the invention, by emitting light beam, the solder fusing part can be heated over the solder melting point, and the unnecessary portion of the leading end can be fused and adhered to the solder fusing part. Therefore, without requiring any particular heating device, and without space limitation, the wire solder leading end can be kept in normal state while saving the cost, and stable soldering process of high quality can be continued. 
   In the conventional optical processing apparatus described above, the solder feed method for soldering is not designed to detect the position of the solder leading end at the processing area of the work, and the solder is supplied for a predetermined solder feed time and at feed speed, whether the leading end of the solder is short or long for the processing area. Hence, a proper amount of solder is not supplied for the processing area, and excessive soldering or insufficient soldering occurs, and it is hard to assure the quality. 
   The invention is intended to present a optical processing apparatus for solving such problems, and examples are explained below by referring to exemplary embodiments 9 to 17. 
   Exemplary Embodiment 9 
   A ninth exemplary embodiment of the invention is described below while referring to  FIGS. 11 ,  19 ,  20 A,  20 B,  20 C, and  20 D. 
   Light energy output means  301  is a processing energy source for producing a light energy. A first optical path  302  shows an optical path of the light energy for guiding the light energy to the work. A half mirror  303  has a function of transmitting wavelength components of light energy, and reflecting visible ray components. Optical means  304  shapes the light energy, and focuses the light emitted from the light energy output means  201  into a necessary beam diameter. Its focusing characteristic is determined depending on the divergent characteristic of the light energy source. A detachable protective glass  305  prevents foreign matter generated in processing from sticking to the optical means  304 . If the light energy output is lowered due to deposits of foreign matter, by replacing the protective glass  105 , the optical output is recovered, and the maintenance is facilitated. A work  306  is the object of processing of this apparatus. A mirror  307  guides the light of the work to photo receiving means  308 . The photo receiving means  308  is means for viewing the image of the work and the leading end portion of the wire solder. A second optical path  309  shows an optical path of the photo receiving means  308 . A processing head is composed of these elements from the light energy output mean  301  to the second optical path  309 . Driving means  310  changes relative positions of the work  306  and optical means  304 . A wire solder feed device  311  feeds a wire solder. Leading end shape detecting means  312  detects the shape of leading end of wire solder. 
   In the optical processing apparatus thus configured, the operation is explained. 
   First of all, light emitted from the light energy output means  301  passes the half mirror  303  along the first optical path  302 , and enters the light energy shaping means  304 . Herein, this light is focused into a necessary size, and is emitted to the work  306  by way of the protective glass  305 . The work  306  is machined by this focused light. The light reflected by the work  306  passes through the protective glass  305  and optical means  304 , and is reflected by the half mirror  303  to get into the second optical path  309 , and is reflected again by the mirror  307 , and enters the photo receiving means  308 . For local heating by focusing the light energy, driving means  310  is provided for relatively moving the processing head and the work, while suppressing heat effects on the work, and hence the processing region can be expanded. Also by the wire solder feed means  311 , the light beam can be emitted to the specified position of the work by the processing head, and the solder is supplied into the heated irradiation position, and thereby soldering can be executed. Before or after soldering in the processing position, the leading end shape detecting means  312  judges the leading end of the solder  314  supplied from the wire solder nozzle  313 , determines normal when it is as shown in  FIG. 19 . On the other hand, if the leading end of the solder  314  is as shown in any one of  FIG. 20A  to  FIG. 20D , the leading end shape detecting means  312  judges the position is not appropriate, and detects solder failure. 
   By this constitution, a proper amount of solder can be supplied, and excessive solder and solder failure can be prevented, and the soldering condition suited to the work is realized, and soldering of high quality is executed. 
   For example, the light energy is laser or lamp, the photo receiving means is camera, the leading end shape detecting means is image recognition device, and image compensating means is lens. 
   Exemplary Embodiment 10 
   A tenth exemplary embodiment of the invention is described below while referring to  FIG. 12 . 
   In  FIG. 12 , the structure from the light energy output means  301  to the solder  314  is same as in exemplary embodiment 9, and the explanation is omitted. 
   In this exemplary embodiment, the processing head is disposed at the lower in the acting direction of gravity on the work  306 , and is designed to machine the lower side of the work  306 . 
   By this constitution and configuration, if the processing side of the work  306  is at the lower side, it is not required to invert the work  306 , and inverting device is not needed, and hence, it is free from risk of deviation of position due to inversion of the work  306  or dropping of the work or parts mounted thereon. 
   Exemplary Embodiment 11 
   An eleventh exemplary embodiment of the invention is described below while referring to  FIG. 13 . 
   In  FIG. 13 , the structure from the light energy output means  301  to the solder  314  is same as in exemplary embodiment 9, and the explanation is omitted. 
   This exemplary embodiment further comprises display means  315  for displaying the image of the work  306  obtained by the photo receiving means  308 , recognition means  316  detecting the position of the processing head, and processing position detecting means  317 . 
   The processing position detecting means  317  detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means  316 . This signal is sent to the display means  315 , and is displayed as an image. The image of the work  306  is converted into an electric signal by the photo receiving means  308 , and is displayed as an image of processing position of the work  306  by the display means  315 . Accordingly, if the processing area is small, or the processing area is at the lower side of the work and is hard to recognize visually, it can be observed easily by this displayed image, or if the position is deviated, it can be easily detected, and position teaching or correction confirmation may be easily done. 
   For example, the processing position detecting means is computer, and the display means is CRT or LCD display device. 
   Exemplary Embodiment 12 
   A twelfth exemplary embodiment of the invention is described below while referring to  FIG. 14 . 
   In  FIG. 14 , the structure from the light energy output means  301  to the processing position detecting means  317  is same as in exemplary embodiment 11, and the explanation is omitted. 
   This exemplary embodiment further comprises position detection correcting means  318 . 
   In the optical processing apparatus thus configured, the operation is explained below. The processing position detecting means  317  detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means  316 . This signal is sent to the display means  315 , and is displayed as an image. The image of the work  306  is converted into an electric signal by the photo receiving means  308 , and is displayed as an image of processing position of the work  306  by the display means  315 . Herein, the processing position detection correcting means  318  detects the difference between the position of processing area of the work  306  by the photo receiving means  308  and the position of light beam emitted from the processing head, and sends the information to the processing position detecting means  317 . The processing position detecting means  317  positions the processing head by compensating so as to eliminate the position error by the driving means  310  on the basis of this error position information, and processing is started by manipulating the light energy output means  301  of the processing head. By such position detection and correction motion, if the positioning precision of the work is low, the processing position precision can be assured. 
   For example, the processing head position recognition means is encoder of driving means, and the position detection correcting means is image recognition device. 
   Exemplary Embodiment 13 
   A thirteenth exemplary embodiment of the invention is described below while referring to  FIG. 14 . 
   In  FIG. 14 , the structure from the light energy output means  301  to the position detection correcting means  318  is same as in exemplary embodiment 12, and the explanation is omitted. 
   This exemplary embodiment further comprises image memory means  319 . 
   In the optical processing apparatus thus configured, the operation is explained below. The processing position detecting means  317  detects the position of light beam emitted from the processing head on the basis of the information from the processing head position recognition means  316 . This signal is sent to the display means  315 , and is displayed as an image. The image of the work  306  is converted into an electric signal by the photo receiving means  308 , and is displayed as an image of processing position of the work  306  by the display means  315 . The processing head is installed in an acting direction of gravity on the work  306 , and relative positions of the processing head and the work  306  can be changed by the driving means  310 . Image data of the work  306  is stored in the image memory means  317 . The image memory means  317  displays the image in the display means  313 . The present light beam emitting position is also displayed in the display means  313  by the processing position detecting means  315 . By this image memory means, the processing position can be taught off-line while observing the image of the work. 
   Specific examples of image data include CAD data, scanner image, and camera image. 
   Exemplary Embodiment 14 
   A fourteenth exemplary embodiment of the invention is described below while referring to  FIG. 15 . 
   In  FIG. 15 , the structure from the light energy output means  301  to the image memory means  319  is same as in exemplary embodiment 13, and the explanation is omitted. 
   This exemplary embodiment further comprises image distortion correcting means  320  for compensating the image distorted by the optical means  304  provided between the mirror  307  and photo receiving means  308 . 
   In the optical processing apparatus thus configured, the operation is explained below. The light coming out from the work  306  passes through the protective glass  305  and optical means  304 , and is reflected by the half mirror  303  to get into the second optical path  309 , and is reflected again by the mirror  307 , and gets into the photo receiving means  308  by way of the image distortion correcting means  320 . By the image distortion correcting means  320  disposed before the photo receiving means  308 , distortion of image can be suppressed, and the precision is not lowered at the time of teaching, display confirmation or recognition compensation. 
   Exemplary Embodiment 15 
   A fifteenth exemplary embodiment of the invention is described below while referring to  FIG. 16 . 
   In  FIG. 16 , the structure from the light energy output means  301  to the image distortion correcting means  320  is same as in exemplary embodiment 14, and the explanation is omitted. 
   This exemplary embodiment further comprises a deposits judging part  321  for judging deposits of plural different colors. 
   In the optical processing apparatus thus configured, the operation is explained below. The driving means  310  can change relative positions of the work  306 , deposits judging part  321  and the processing head, and after moving the processing head to the deposits judging part  321 , sticking status of deposits is detected by the photo receiving means  308 . Depending on the sticking status, by error stop before processing, the operator is warned of necessity of maintenance. Thus, the protective glass  305  is always in normal state during processing, and stable soldering of high quality can be continued. For judging deposits, judging patterns of plural different colors are prepared, so that various types of sticking status can be judged. 
   Exemplary Embodiment 16 
   A sixteenth exemplary embodiment of the invention is described below while referring to  FIG. 17 . 
   In  FIG. 17 , the structure from the light energy output means  301  to the deposits judging part  321  is same as in exemplary embodiment 15, and the explanation is omitted. 
   This exemplary embodiment further comprises a solder fusing part  322  for fusing and sticking unnecessary portion as waste solder in order to keep the solder leading end in appropriate state, and solder fusing part heating means  323  for heating the solder fusing part  322  over the solder melting point. 
   In the optical processing apparatus thus configured, the operation is explained below. The leading end shape detecting means  312  judges the state of the leading end shape of wire solder. If judged to be abnormal, the driving means  310  moves the wire solder leading end to the solder fusing part, and moves closer to the solder fusing part  322  heated over the solder melting point by the solder fusing part heating means  323 . The wire solder feed means  311  feeds the wire solder, and presses to the solder fusing part, and the unnecessary portion of the leading end is fused and stuck to the solder fusing part  322 . At this time, the solder fusing part may be heated beforehand, or may be heated quickly only when required to heat over the melting point. 
   Thus, the leading end state of the wire solder may be always kept in normal state, and stable soldering of high quality can be continued. 
   Exemplary Embodiment 17 
   A seventeenth exemplary embodiment of the invention is described below while referring to  FIG. 18 . 
   In  FIG. 18 , the structure from the light energy output means  301  to the solder fusing part heating means  323  is same as in exemplary embodiment 16, and the explanation is omitted. 
   This exemplary embodiment further comprises an undesired solder drop preventive part  324 . 
   In the optical processing apparatus thus configured, the operation is explained below. When the leading end of the wire solder is in abnormal state, and in particular when folded, if it is directly fitted to the solder fusing part  322 , only the folded portion is fused, and the folded leading end of the wire solder may drop. It is received by the undesired solder drop preventive part  324 , and hence it is not stuck tot he protective glass or the like. Thus, while keeping the leading end of the wire solder in normal state and also keeping other parts in normal state, stable soldering of high quality can be continued. 
   As explained in the exemplary embodiments, the invention can detect the position of leading end portion of wire solder, so that a proper amount of solder can be supplied, and excessive soldering or solder failure can be prevented, and the soldering condition suited to the work can be realized, and soldering of high quality can be performed.