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1. 发明专利

DE3812661B4 未知
公开(公告)号：DE3812661B4
公开(公告)日：2004-10-21
申请号：DE3812661
申请日：1988-04-15
申请人： FUJI PHOTO FILM CO LTD
发明人： KOTANI TAKAAKI , TAKADA SEIJI
IPC分类号： G02B7/32 , G03B13/36 , G01C3/10 , G03B7/16
摘要： A range finding device used on an automatic focusing camera comprises a plurality of light receiving photoelectric elements for receiving light reflected from subjects at different distances in the field each of which provides a subject distance signal. A subject brightness detecting device provides brightness information as to the subject, and a distance information providing device provides distance information based on the distance signals. A data table carries data as to a plurality of lens positions predetermined according to combinations of various subject distances and subject brightness. Based on combinations of information as to the subject brightness and subject distance, any of a plurality of lens positions is selected. To the selected lens position the taking lens of the camera is adjusted so as to include the subject within the depth of field of the taking lens.

2. 发明专利

GB2211047B DISTANCE MEASURING DEVICE 未知
公开(公告)号：GB2211047B
公开(公告)日：1992-08-12
申请号：GB8823817
申请日：1988-10-11
申请人： FUJI PHOTO FILM CO LTD
发明人： KOTANI TAKAAKI , TAKADA SEIJI
IPC分类号： G01S17/46 , G02B7/32

3. 发明专利

DE3834784A1 未知
公开(公告)号：DE3834784A1
公开(公告)日：1989-04-20
申请号：DE3834784
申请日：1988-10-12
申请人： FUJI PHOTO FILM CO LTD
发明人： KOTANI TAKAAKI , TAKADA SEIJI
IPC分类号： G01S17/46 , G02B7/32

4. 发明专利

GB2211047A DISTANCE MEASURING DEVICE 未知
公开(公告)号：GB2211047A
公开(公告)日：1989-06-21
申请号：GB8823817
申请日：1988-10-11
申请人： FUJI PHOTO FILM CO LTD
发明人： KOTANI TAKAAKI , TAKADA SEIJI
IPC分类号： G01S17/46 , G02B7/32

5. 发明专利

DE3812661A1 未知
公开(公告)号：DE3812661A1
公开(公告)日：1988-10-27
申请号：DE3812661
申请日：1988-04-15
申请人： FUJI PHOTO FILM CO LTD
发明人： KOTANI TAKAAKI , TAKADA SEIJI
IPC分类号： G02B7/32 , G02B7/11 , G01C3/10
摘要： A range finding device used on an automatic focusing camera comprises a plurality of light receiving photoelectric elements for receiving light reflected from subjects at different distances in the field each of which provides a subject distance signal. A subject brightness detecting device provides brightness information as to the subject, and a distance information providing device provides distance information based on the distance signals. A data table carries data as to a plurality of lens positions predetermined according to combinations of various subject distances and subject brightness. Based on combinations of information as to the subject brightness and subject distance, any of a plurality of lens positions is selected. To the selected lens position the taking lens of the camera is adjusted so as to include the subject within the depth of field of the taking lens.

6. 发明专利

JPH04199013A ACTIVE TYPE DISTANCE MEASURING METHOD 失效
公开(公告)号：JPH04199013A
公开(公告)日：1992-07-20
申请号：JP33179090
申请日：1990-11-29
申请人： FUJI PHOTO FILM CO LTD , FUJI PHOTO OPTICAL CO LTD
发明人： KOTANI TAKAAKI , TAKADA SEIJI , GOTOU SHIGEKANE , SAITO TATSUO
IPC分类号： G01C3/06 , G02B7/32 , G03B13/36
摘要： PURPOSE:To prevent the influence of noise so as to improve distance measuring reliability by obtaining plural output signals while changing the gain gradually higher in the case of setting the gain value high, and then determining the gain on the basis of the average value of the obtained output signals. CONSTITUTION:In case there is need to set the gain to high value in order to set output signals from gain control amplifiers 18a, 18b to the appropriate level, the initial gain is set to the minimum value, and plural output signals are sampled from the gain control amplifiers 18a, 18b to determine the gain value on the basis of the average value of these output signals. Accordingly, even if noise is superimposed on some of these sampled output signals, its influence can be reduced to improve distance measuring accuracy.

7. 发明专利

JPH03135713A RANGE FINDER 失效
公开(公告)号：JPH03135713A
公开(公告)日：1991-06-10
申请号：JP27464589
申请日：1989-10-20
申请人： FUJI PHOTO FILM CO LTD
发明人： KOTANI TAKAAKI , TAKADA SEIJI
IPC分类号： G01C3/06 , G01S7/48 , G02B7/32 , G03B13/36
摘要： PURPOSE:To suppress the generation of a range finding error and to simplify the circuit constitution by selecting and supplying a couple of output signals from a photodetecting element alternately to a common signal processing means through the switching of a switching means. CONSTITUTION:A 1st output signal which is selected by an analog switch 18 between the two output signals from a PSD(semiconductor position detector) 9 as the photodetecting element is processed by a signal processing means consisting of a gain control amplifier 20, etc., first and outputted at 1st range finding data AFD1. This range finding data AFD1 is stored and held in a RAM 28 temporarily by a microcomputer 14 as an arithmetic means. Then the 2nd output signal which is selected by the analog switch 18 is processed similarly by the common signal processing means and inputted as 2nd range finding data AFD2 to the arithmetic means. The arithmetic means performs arithmetic according to those obtained range finding data AFD1 and AFD2 and outputs a range finding signal correlative to a subject distance.

8. 发明专利

JPH02224565A BOARD COPY EQUIPMENT 失效
公开(公告)号：JPH02224565A
公开(公告)日：1990-09-06
申请号：JP4621089
申请日：1989-02-27
申请人： FUJI PHOTO FILM CO LTD
发明人： NISHITANI YASUHIRO , AOSAKI KOU , NAKA YOUJI , TAKADA SEIJI
IPC分类号： B43L1/04 , G03B13/02 , H04N1/00 , H04N1/04 , H04N1/10 , H04N1/107 , H04N5/225
摘要： PURPOSE:To attain ease of framing with a sense of safety and simple constitution by sliding a mask plate so as to select large and small framing marks, projecting the mark onto a recording face itself, and setting an effective recording area. CONSTITUTION:A microcomputer 112 controls an AF unit 113, on image pickup unit 114, an image pickup section drive unit 110 and a print unit 117. A light radiating from a xenon tube in a main body projects an AF mark and a framing mark onto a screen. A framing mark on a slit board and that of a mask board are overlapped and skided horizontally and vertically to confirm an effective recording area in the middle of the screen and the effective recording area with a wide width is set as required. Then an image pickup button is depressed, and the distance from a blackboard is measured by an AF control section 18 and the lens is focused by the control of the microcomputer 112 and a motor 106 drives a line sensor 104. The sensor 104 outputs a picture signal from a photodetector to the microcomputer 112 and inputted sequentially to a thermal head 123 in the print unit 117 via a driver 122.

9. 发明专利

JPH02190836A ELECTROPHOTOGRAPHIC COPYING DEVICE 失效
公开(公告)号：JPH02190836A
公开(公告)日：1990-07-26
申请号：JP1146389
申请日：1989-01-20
申请人： FUJI PHOTO FILM CO LTD
发明人： NAKA YOUJI , AOSAKI KOU , TAKADA SEIJI , NISHITANI YASUHIRO
IPC分类号： G03G15/04 , B41J2/44 , G03B27/32 , H04N1/00 , H04N1/04 , H04N1/38 , H04N5/225 , H04N5/335 , H04N5/369 , H04N5/372
摘要： PURPOSE:To surely and easily set an image pickup range by providing a framing projection means for projecting a framing mark for displaying the image pickup range on a recording surface. CONSTITUTION:A slit plate 67 is disposed at a position equivalent to the image- forming position of a photographing lens in an initial position. A light projecting slit 68 is opened in the center part of the slit plate 67, and framing slits 71-76 and framing slits 78-83 are opened on the left side and the right side of the slit 68 respectively. Therefore, AF spot light A is projected on a screen 131 through a finder mirror with the light emitted from a xenon tube inside a main body 10 and passing through a pin hole and the framing mark F is projected in the same way with the light passing through the framing slits. Thus, the image pickup range is easily set.

10. 发明专利

JPH0299932A CHARGE COMPLETION DETECTING CIRCUIT FOR STROBOSCOPIC DEVICE FOR CAMERA 失效
公开(公告)号：JPH0299932A
公开(公告)日：1990-04-11
申请号：JP25226788
申请日：1988-10-06
申请人： FUJI PHOTO OPTICAL CO LTD , FUJI PHOTO FILM CO LTD
发明人： ONOZUKA HARUO , TAKADA SEIJI , OKAZAKI YUKIO , SATO MUNEYOSHI
IPC分类号： G03B15/05 , H05B41/32
摘要： PURPOSE:To obtain a charge completion detecting circuit which gives a charge completion signal having a period of time required for a microcomputer to recognize charge completion by providing a detection transister, a control transister, and a Zener diode conducted with the completion of charging a main capacitor. CONSTITUTION:The title circuit is provided with the Zener diode 3a, the detection transistor 3e, and the control transistor 3f; the Zener diode 3a is inserted in parallel with the main capacitor 6 and conducted with the completion of charging the main capacitor 6; the detection transistor 3e gives a charge completion signal with the conduction of the Zener diode 3e; and the control transister 3f responds to the electrical conduction of the Zener diode 3a, operates later than the detection transister 3e according to the different in threshold levels, and stops a DC/DC converter 2. Consequently, the timer that the Zener diode 3a is conducted is prolonged therefore the charge completion signal, which has a period of time necessary for the recognition by the microcomputer 8 can be provided.

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