DD124848A1 - DEVICE FOR LIGHT CURRENT CONTROL - Google Patents
DEVICE FOR LIGHT CURRENT CONTROLInfo
- Publication number
- DD124848A1 DD124848A1 DD187437A DD18743775A DD124848A1 DD 124848 A1 DD124848 A1 DD 124848A1 DD 187437 A DD187437 A DD 187437A DD 18743775 A DD18743775 A DD 18743775A DD 124848 A1 DD124848 A1 DD 124848A1
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- current control
- light current
- light
- control
- current
- Prior art date
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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
-
- 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
- G02F1/03—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/05—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect with ferro-electric properties
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Diaphragms For Cameras (AREA)
- Liquid Crystal (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD187437A DD124848A1 (en) | 1975-07-24 | 1975-07-24 | DEVICE FOR LIGHT CURRENT CONTROL |
DE2630593A DE2630593C2 (en) | 1975-07-24 | 1976-07-07 | Camera with automatic exposure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD187437A DD124848A1 (en) | 1975-07-24 | 1975-07-24 | DEVICE FOR LIGHT CURRENT CONTROL |
Publications (1)
Publication Number | Publication Date |
---|---|
DD124848A1 true DD124848A1 (en) | 1977-03-16 |
Family
ID=5501143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD187437A DD124848A1 (en) | 1975-07-24 | 1975-07-24 | DEVICE FOR LIGHT CURRENT CONTROL |
Country Status (2)
Country | Link |
---|---|
DD (1) | DD124848A1 (en) |
DE (1) | DE2630593C2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5496997A (en) * | 1978-01-17 | 1979-07-31 | Minolta Camera Co Ltd | Electrochromic light volume control component |
DE2816861A1 (en) * | 1978-04-18 | 1979-10-31 | Agfa Gevaert Ag | SHUTTER FOR A PHOTOGRAPHIC CAMERA |
DE2935184C2 (en) * | 1979-08-31 | 1982-04-29 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Electro-optical shutter. |
US4509848A (en) * | 1982-02-08 | 1985-04-09 | Canon Kabushiki Kaisha | Light measuring device for camera |
DD206250A1 (en) * | 1982-08-16 | 1984-01-18 | Pentacon Dresden Veb | PHOTOELECTRIC MEASURING DEVICE FOR CAMERAS |
US5387958A (en) * | 1992-06-30 | 1995-02-07 | Sony Electronics, Inc. | Electro-optical control of light attenuation in the optical path of a camera |
DE19804312C1 (en) * | 1998-02-04 | 1999-09-16 | Bayer Ag | Image recording unit, especially a photographic or semiconductor detector camera, has electronically controlled light exposure |
KR101912718B1 (en) * | 2011-05-30 | 2018-10-29 | 삼성전자주식회사 | Optical image shutter and method of fabricating the same |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3661442A (en) * | 1969-03-25 | 1972-05-09 | Hitachi Ltd | Electrically operated optical shutter |
US3911457A (en) * | 1972-02-07 | 1975-10-07 | Canon Kk | Viewfinder for single lens reflex cameras including means to view exposure guides |
DE2329014C2 (en) * | 1973-06-07 | 1983-04-28 | Agfa-Gevaert Ag, 5090 Leverkusen | Screen arrangement with at least one liquid crystal element |
JPS5840172B2 (en) * | 1973-07-28 | 1983-09-03 | 沖電気工業株式会社 | camera |
-
1975
- 1975-07-24 DD DD187437A patent/DD124848A1/en unknown
-
1976
- 1976-07-07 DE DE2630593A patent/DE2630593C2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2630593A1 (en) | 1977-02-10 |
DE2630593C2 (en) | 1983-09-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NPI | Change in the person, name or address of the patentee (addendum to changes before extension act) |