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公开(公告)号：GB2118313B
公开(公告)日：1986-03-12
申请号：GB8305600
申请日：1983-03-01
Applicant: MINOLTA CAMERA KK
Inventor： YUASA YOSHIO , YASUMOTO HIDETOSHI , NARUSE KAZUHIKO , KAWAGOE NOBUKAZU , INABA MASAHITO
Abstract: Disclosed herein is a light measuring and control data calculating device for use in a photographic enlarger. The device comprises first light detecting means for detecting the amount of light emitted from a light source, second light detecting means for detecting the emitted light amount at a position on the surface of an easel through the optical system and an original film in the enlarger, setting means for manually setting a preliminary desired amount of light to be emitted from the light source and calculation means for calculating an actually desired amount of flash light to be emitted from the light source for obtaining a desired total amount of the exposure light on the surface of the easel for making a suitable exposure on the printing paper to provide a best print.
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公开(公告)号：DE3333535A1
公开(公告)日：1984-03-22
申请号：DE3333535
申请日：1983-09-16
Applicant: MINOLTA CAMERA KK
Inventor： YUASA YOSHIO , YASUMOTO HIDETOSHI , NARUSE KAZUHIKO , KAWAGOE NOBUKAZU , INABA MASAHITO
Abstract: An enlarger for copying a film is provided having two modes of operation. A first mode of operation permits preliminary adjustment of the focus of the lens system while the second mode of operation permits an actual exposure, the first mode of operation being inhibited during the actual exposure of the film in the second mode.
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公开(公告)号：IT8367240D0
公开(公告)日：1983-03-02
申请号：IT6724083
申请日：1983-03-02
Applicant: MINOLTA CAMERA KK
Abstract: Disclosed herein is a light measuring and control data calculating device for use in a photographic enlarger. The device comprises first light detecting means for detecting the amount of light emitted from a light source, second light detecting means for detecting the emitted light amount at a position on the surface of an easel through the optical system and an original film in the enlarger, setting means for manually setting a preliminary desired amount of light to be emitted from the light source and calculation means for calculating an actually desired amount of flash light to be emitted from the light source for obtaining a desired total amount of the exposure light on the surface of the easel for making a suitable exposure on the printing paper to provide a best print.
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公开(公告)号：DE3333560A1
公开(公告)日：1984-03-22
申请号：DE3333560
申请日：1983-09-16
Applicant: MINOLTA CAMERA KK
Inventor： YUASA YOSHIO , YASUMOTO HIDETOSHI , NARUSE KAZUHIKO , KAWAGOE NOBUKAZU , INABA MASAHITO
Abstract: An enlarger for copying a film is provided having two modes of operation. A first mode of operation permits preliminary adjustment of the focus of the lens system while the second mode of operation permits an actual exposure, the first mode of operation being inhibited during the actual exposure of the film in the second mode.
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公开(公告)号：GB2118313A
公开(公告)日：1983-10-26
申请号：GB8305600
申请日：1983-03-01
Applicant: MINOLTA CAMERA KK
Inventor： YUASA YOSHIO , YASUMOTO HIDETOSHI , NARUSE KAZUHIKO , KAWAGOE NOBUKAZU , INABA MASAHITO
Abstract: Disclosed herein is a light measuring and control data calculating device for use in a photographic enlarger. The device comprises first light detecting means for detecting the amount of light emitted from a light source, second light detecting means for detecting the emitted light amount at a position on the surface of an easel through the optical system and an original film in the enlarger, setting means for manually setting a preliminary desired amount of light to be emitted from the light source and calculation means for calculating an actually desired amount of flash light to be emitted from the light source for obtaining a desired total amount of the exposure light on the surface of the easel for making a suitable exposure on the printing paper to provide a best print.
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Patent Agency Ranking
公开(公告)号：DE3307350A1
公开(公告)日：1983-09-08
申请号：DE3307350
申请日：1983-03-02
Applicant: MINOLTA CAMERA KK
Inventor： YUASA YOSHIO , YASUMOTO HIDETOSHI , NARUSE KAZUHIKO , KAWAGOE NOBUKAZU , INABA MASAHITO
Abstract: Disclosed herein is a light measuring and control data calculating device for use in a photographic enlarger. The device comprises first light detecting means for detecting the amount of light emitted from a light source, second light detecting means for detecting the emitted light amount at a position on the surface of an easel through the optical system and an original film in the enlarger, setting means for manually setting a preliminary desired amount of light to be emitted from the light source and calculation means for calculating an actually desired amount of flash light to be emitted from the light source for obtaining a desired total amount of the exposure light on the surface of the easel for making a suitable exposure on the printing paper to provide a best print.
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公开(公告)号：DE3279992D1
公开(公告)日：1989-11-23
申请号：DE3279992
申请日：1982-12-09
Applicant: MINOLTA CAMERA KK
Inventor： YUASA YOSHIO , YASUMOTO HIDETOSHI , KAWAGOE NOBUKAZU , NARUSE KAZUHIKO , INABA MASAHITO
Abstract: PCT No. PCT/JP82/00462 Sec. 371 Date Aug. 9, 1983 Sec. 102(e) Date Aug. 9, 1983 PCT Filed Dec. 9, 1982 PCT Pub. No. WO83/02171 PCT Pub. Date Jun. 23, 1983.An exposure light source device wherein a control circuit 1 controls a light source for emitting pulse lights, with respect to the member of light emissions and the amount of light emitted at each time. The light source device is particularly useful for color additive type photographic color enlarger. When the device is used in such an enlarger, the number of light emission and each emitted light amount is determined such that the exposure time is approximately the same regardless of the total amount of exposure.
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公开(公告)号：EP0103021A4
公开(公告)日：1984-04-27
申请号：EP82903589
申请日：1982-12-09
Applicant: MINOLTA CAMERA KK
Inventor： YUASA YOSHIO , YASUMOTO HIDETOSHI , KAWAGOE NOBUKAZU , NARUSE KAZUHIKO , INABA MASAHITO
CPC classification number: G03B27/72
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公开(公告)号：JPH06273232A
公开(公告)日：1994-09-30
申请号：JP5872993
申请日：1993-03-18
Applicant: MINOLTA CAMERA KK
Inventor： INABA MASAHITO , KUSAJI TATSUAKI , ISHIBASHI HIDEKI
IPC: G01J3/51
Abstract: PURPOSE:To provide a light intercepting optical system which can effectively lead the light, which is to be measured and uniformly contains light beams emitted from respective points in an area to be measured, to respective sensors of a sensor array so that the light to be measured is incident on a filter face vertically in a light intercepting optical system of a colorimeter using a spectral sensor consisting of a combination of a wavelength resolving filter and a sensor array and the like. CONSTITUTION:Light emitted from an area to be measured passes an aperture 2, an objective lens 3, and an aperture 4 and extends radially in the rear side beyond an image forming position. A spectral sensor consisting of a wavelength resolving filter 5 and a sensor array 6 is arranged inside an area, in which light beams emitted from all the points in the area to be measured are contained necessarily, and uniformity of the incident light is maintained. Light beams from the area to be measured 1 are converged in the vertical direction to a row of the sensor array by a cylindrical lens 7, so that light intercepting effect is improved comparing with a conventional optical system. On the other hand, the light beams from the area to be measured 1 are converted into parallel light beams after passing through a cylindrical lens 8, so that the light beams are incident on the filter 5 vertically.
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公开(公告)号：JPS58149036A
公开(公告)日：1983-09-05
申请号：JP3324582
申请日：1982-03-02
Applicant: MINOLTA CAMERA KK
Inventor： YUASA YOSHIO , YASUMOTO HIDETOSHI , NARUSE KAZUHIKO , KAWAGOE NOBUKAZU , INABA MASAHITO
Abstract: PURPOSE:To know and control the quantity of the light to be emitted by the light source of an enlarger by which best prints are obtained even if the state of an optical system for enlarging changes, by providing a detecting circuit for quantity of emitted light and a detecting circuit for exposure and obtaining printing conditions for various optical states for enlarging in accordance with the ratios of the output data of these detecting circuits. CONSTITUTION:A capacitor 45 for integration starts integration of the output current of a photodetector PD1 by the emission of a xenon tube. Since the emission of light is just started in this stage, the output terminals d1, d2, d3 of comparators 33, 34, 39 are all ''Low'' and the control input of a multiplexer 40 is ''Low''. Therefore, the data of unit quantity f1 of light emission from a shift circuit 30 is outputted. The signal obtd. by cnverting the data of f1 to an analog signal with a D-A converter 41 and the detection signal for quantity of light emission outputted form an integrating capacitor 45 are compared in a comparator 42, and when the level of the latter attains the level of the former, the output of the comparator 42 inverts to ''High'', and the signal thereof is fed through an AND circuit 54 and an OR circuit 55 to a well-known stopping circuit 48 for light emission, whereby the emission of light by the xenon lamp is stopped.
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