GB2180946B - Display device in viewfinder - Google Patents

Display device in viewfinder

Info

Publication number
GB2180946B
GB2180946B GB8619323A GB8619323A GB2180946B GB 2180946 B GB2180946 B GB 2180946B GB 8619323 A GB8619323 A GB 8619323A GB 8619323 A GB8619323 A GB 8619323A GB 2180946 B GB2180946 B GB 2180946B
Authority
GB
United Kingdom
Prior art keywords
viewfinder
display device
display
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.)
Expired
Application number
GB8619323A
Other versions
GB8619323D0 (en
GB2180946A (en
Inventor
Hajime Sakata
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
Priority claimed from JP60173791A external-priority patent/JPH0727161B2/en
Priority claimed from JP60173790A external-priority patent/JPH0664269B2/en
Application filed by Canon Inc filed Critical Canon Inc
Publication of GB8619323D0 publication Critical patent/GB8619323D0/en
Publication of GB2180946A publication Critical patent/GB2180946A/en
Application granted granted Critical
Publication of GB2180946B publication Critical patent/GB2180946B/en
Expired 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/18—Signals indicating condition of a camera member or suitability of light
    • G03B17/20—Signals indicating condition of a camera member or suitability of light visible in viewfinder
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/292—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection by controlled diffraction or phased-array beam steering
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/30—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating
    • G02F2201/305—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating diffraction grating
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/22—Function characteristic diffractive
GB8619323A 1985-08-07 1986-08-07 Display device in viewfinder Expired GB2180946B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60173791A JPH0727161B2 (en) 1985-08-07 1985-08-07 Display device in the finder
JP60173790A JPH0664269B2 (en) 1985-08-07 1985-08-07 Display device in the finder

Publications (3)

Publication Number Publication Date
GB8619323D0 GB8619323D0 (en) 1986-09-17
GB2180946A GB2180946A (en) 1987-04-08
GB2180946B true GB2180946B (en) 1989-11-29

Family

ID=26495626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8619323A Expired GB2180946B (en) 1985-08-07 1986-08-07 Display device in viewfinder

Country Status (2)

Country Link
DE (1) DE3627113A1 (en)
GB (1) GB2180946B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795952B1 (en) 1999-07-08 2003-05-30 Oreal COMPOSITION FOR THE TREATMENT OF HAIR AND SCALP ANTI-DANDRAP, BASED ON ANTI-DANDRUFF AND HYDROXYACID

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435591A (en) * 1972-06-23 1976-05-12 Western Electric Co Liquid crystal devices
GB1588896A (en) * 1976-09-07 1981-04-29 Canon Kk Camera having a holographic indicator
US4294529A (en) * 1978-09-07 1981-10-13 Canon Kabushiki Kaisha Camera
GB2166562A (en) * 1984-10-03 1986-05-08 Canon Kk Liquid crystal device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251137A (en) * 1977-09-28 1981-02-17 Rca Corporation Tunable diffractive subtractive filter
US4465355A (en) * 1981-10-09 1984-08-14 Canon Kabushiki Kaisha Single-lens reflex camera
DE3605516A1 (en) * 1985-02-21 1986-09-04 Canon K.K., Tokio/Tokyo OPTICAL FUNCTIONAL ELEMENT AND OPTICAL FUNCTIONAL DEVICE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435591A (en) * 1972-06-23 1976-05-12 Western Electric Co Liquid crystal devices
GB1588896A (en) * 1976-09-07 1981-04-29 Canon Kk Camera having a holographic indicator
US4294529A (en) * 1978-09-07 1981-10-13 Canon Kabushiki Kaisha Camera
GB2166562A (en) * 1984-10-03 1986-05-08 Canon Kk Liquid crystal device

Also Published As

Publication number Publication date
DE3627113A1 (en) 1987-02-19
GB8619323D0 (en) 1986-09-17
DE3627113C2 (en) 1992-04-09
GB2180946A (en) 1987-04-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030807