FR2253222B1 - - Google Patents

Info

Publication number
FR2253222B1
FR2253222B1 FR7439231A FR7439231A FR2253222B1 FR 2253222 B1 FR2253222 B1 FR 2253222B1 FR 7439231 A FR7439231 A FR 7439231A FR 7439231 A FR7439231 A FR 7439231A FR 2253222 B1 FR2253222 B1 FR 2253222B1
Authority
FR
France
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.)
Expired
Application number
FR7439231A
Other versions
FR2253222A1 (fr
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of FR2253222A1 publication Critical patent/FR2253222A1/fr
Application granted granted Critical
Publication of FR2253222B1 publication Critical patent/FR2253222B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1086—Beam splitting or combining systems operating by diffraction only
    • G02B27/1093—Beam splitting or combining systems operating by diffraction only for use with monochromatic radiation only, e.g. devices for splitting a single laser source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/108—Beam splitting or combining systems for sampling a portion of a beam or combining a small beam in a larger one, e.g. wherein the area ratio or power ratio of the divided beams significantly differs from unity, without spectral selectivity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements
    • 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
    • G03B7/09973—Through the lens [TTL] measuring in mirror-reflex cameras using the mirror as sensor
    • 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
    • G03B7/09974—Through the lens [TTL] measuring in mirror-reflex cameras using the film or shutter as sensor light reflecting member

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Holo Graphy (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Exposure Control For Cameras (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
FR7439231A 1973-11-29 1974-11-29 Expired FR2253222B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48134782A JPS5833534B2 (ja) 1973-11-29 1973-11-29 光分割器

Publications (2)

Publication Number Publication Date
FR2253222A1 FR2253222A1 (fr) 1975-06-27
FR2253222B1 true FR2253222B1 (fr) 1983-02-18

Family

ID=15136414

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7439231A Expired FR2253222B1 (fr) 1973-11-29 1974-11-29

Country Status (2)

Country Link
JP (1) JPS5833534B2 (fr)
FR (1) FR2253222B1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5595927A (en) * 1979-01-11 1980-07-21 Leo Giken:Kk Light quantity stabilizing device for exposure
JPS634984Y2 (fr) * 1979-02-28 1988-02-10
SU1097563A1 (ru) * 1980-10-21 1984-06-15 Армянское Отделение Всесоюзного Ордена Трудового Красного Знамени Научно-Исследовательского Проектно-Конструкторского И Технологического Института Источников Тока Концентратор светового излучени и способ изготовлени голограммы дл него
JPS57108833A (en) * 1980-12-25 1982-07-07 Olympus Optical Co Ltd Photometric device for reflection of single-lens reflex camera
JPS62237435A (ja) * 1986-04-08 1987-10-17 Canon Inc 測光装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS444273Y1 (fr) * 1966-06-18 1969-02-17
JPS5625652B2 (fr) * 1972-12-11 1981-06-13

Also Published As

Publication number Publication date
FR2253222A1 (fr) 1975-06-27
JPS5086356A (fr) 1975-07-11
JPS5833534B2 (ja) 1983-07-20

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