FR2275797A1 - Dispositif optique d'eclairement - Google Patents

Dispositif optique d'eclairement

Info

Publication number
FR2275797A1
FR2275797A1 FR7519445A FR7519445A FR2275797A1 FR 2275797 A1 FR2275797 A1 FR 2275797A1 FR 7519445 A FR7519445 A FR 7519445A FR 7519445 A FR7519445 A FR 7519445A FR 2275797 A1 FR2275797 A1 FR 2275797A1
Authority
FR
France
Prior art keywords
lighting device
optical lighting
optical
lighting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7519445A
Other languages
English (en)
Other versions
FR2275797B1 (fr
Inventor
Susumu Tanaka
Yuji Enoguchi
Masaya Ogawa
Hidetoshi Kawabata
Takaji Kurita
Takao Fujiwara
Hiroshi Murasaki
Kenichi Wada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minolta Co Ltd filed Critical Minolta Co Ltd
Publication of FR2275797A1 publication Critical patent/FR2275797A1/fr
Application granted granted Critical
Publication of FR2275797B1 publication Critical patent/FR2275797B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/54—Lamp housings; Illuminating means
    • G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0096—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the lights guides being of the hollow type
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/522—Projection optics
    • G03B27/525—Projection optics for slit exposure
    • G03B27/528—Projection optics for slit exposure in which the projection optics remain stationary
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
FR7519445A 1974-06-22 1975-06-20 Dispositif optique d'eclairement Granted FR2275797A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7151874A JPS562956B2 (fr) 1974-06-22 1974-06-22

Publications (2)

Publication Number Publication Date
FR2275797A1 true FR2275797A1 (fr) 1976-01-16
FR2275797B1 FR2275797B1 (fr) 1982-02-19

Family

ID=13463004

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7519445A Granted FR2275797A1 (fr) 1974-06-22 1975-06-20 Dispositif optique d'eclairement

Country Status (5)

Country Link
US (1) US3981575A (fr)
JP (1) JPS562956B2 (fr)
DE (1) DE2527334C2 (fr)
FR (1) FR2275797A1 (fr)
GB (1) GB1490134A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS562956B2 (fr) * 1974-06-22 1981-01-22
JPS5145538A (fr) * 1974-10-17 1976-04-19 Ricoh Kk
US4068936A (en) * 1975-12-28 1978-01-17 Minolta Camera Kabushiki Kaisha Optical projection apparatus for image transfer type electrophotographic copiers
US4194827A (en) * 1978-08-28 1980-03-25 Minnesota Mining And Manufacturing Company Fiber optical element imaging and illumination assembly
JPS56143461A (en) * 1980-04-09 1981-11-09 Kondo Shirubania Kk Electrophotographic copier
US4382672A (en) * 1980-09-29 1983-05-10 Xerox Corporation Illumination arrangement for elimination of gray borders in copying device
DE3173011D1 (en) * 1980-09-29 1986-01-02 Xerox Corp Illumination arrangement for elimination of gray borders in a copying device
US4462662A (en) * 1981-06-15 1984-07-31 Xerox Corporation Imaging system utilizing a gradient index lens array compensated for non-uniform object illumination
US4564286A (en) * 1983-06-09 1986-01-14 Xerox Corporation Illumination device
USRE34454E (en) * 1985-12-24 1993-11-23 Brother Kogyo Kabushiki Kaisha Copying apparatus
US5024512A (en) * 1986-07-18 1991-06-18 American Photo Systems, Inc. Microfilm reader with microfilm and reticle images provided to each of two binocular eyepieces
GB9524687D0 (en) * 1995-12-02 1996-01-31 Integrex Ltd Improvements in or relating to image projecting apparatus
US6249368B1 (en) * 2000-01-12 2001-06-19 Umax Data Systems Inc. Light source module for optical scanner
JP2004112294A (ja) * 2002-09-18 2004-04-08 Sharp Corp 画像読み取り装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125013A (en) * 1964-03-17 Apparatus for reflex copying by the use of fiber optical devices
US3060805A (en) * 1959-05-04 1962-10-30 Bausch & Lomb Image forming element
GB1122231A (en) * 1964-08-18 1968-07-31 Caps Res Ltd Improvements in document-copying apparatus
US3532424A (en) * 1967-11-16 1970-10-06 Addressograph Multigraph Elliptical reflector for photocopying machine
DE1816591A1 (de) * 1968-12-23 1970-06-25 Kalle Ag Kopiergeraet
US3834814A (en) * 1969-03-27 1974-09-10 Sunbeam Business Equipment Co Book copier
US3712731A (en) * 1969-12-28 1973-01-23 Ricoh Kk Heat shield device for a reproducing apparatus
US3694076A (en) * 1970-08-31 1972-09-26 Paul E Weber Multiple lenslet copier
US3741644A (en) * 1972-01-14 1973-06-26 Xerox Corp Original position confirming means for duplicating apparatus
US3777135A (en) * 1972-07-11 1973-12-04 Xerox Corp Illumination system
JPS562956B2 (fr) * 1974-06-22 1981-01-22

Also Published As

Publication number Publication date
DE2527334A1 (de) 1976-05-06
US3981575A (en) 1976-09-21
JPS511141A (fr) 1976-01-07
DE2527334C2 (de) 1985-12-05
JPS562956B2 (fr) 1981-01-22
FR2275797B1 (fr) 1982-02-19
GB1490134A (en) 1977-10-26

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Legal Events

Date Code Title Description
ST Notification of lapse