JPS57177134A - Indicator placed in finder - Google Patents
Indicator placed in finderInfo
- Publication number
- JPS57177134A JPS57177134A JP6225381A JP6225381A JPS57177134A JP S57177134 A JPS57177134 A JP S57177134A JP 6225381 A JP6225381 A JP 6225381A JP 6225381 A JP6225381 A JP 6225381A JP S57177134 A JPS57177134 A JP S57177134A
- Authority
- JP
- Japan
- Prior art keywords
- luminous flux
- varied
- finder
- outside scene
- outside
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Indication In Cameras, And Counting Of Exposures (AREA)
Abstract
PURPOSE:To distinctly observe an information display even under a bright outside scene, by placing a dimming element whose transmittivity is varied in accordance with intensity of light, in a position which is outside of an information display optical path and is inside of a finder optical path. CONSTITUTION:An outside scene luminous flux which has passed through a zoom lens 20 is divided into a finder luminous flux and a photographing luminous flux by a half-mirror prism 21. This photographing luminous flux further passes through a diaphragm 22 and a master lens 23, and forms an image on a film surface 24. On the other hand, a dimming element 25 whose transmittivity is varied in accordance with intensity of light is placed in a position which is outside of said outside scene luminous flux and inside of the finder luminous flux, and the optical path is directed to the eyepiece part through an objective lens 26 by a half mirror 29. According to such a constitution, when brightness of the outside scene is varied, transmittivity of the dimming element is varied in accordance with said variation, therefore, an information display can be observed distinctly even under a bright outside scene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6225381A JPS57177134A (en) | 1981-04-24 | 1981-04-24 | Indicator placed in finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6225381A JPS57177134A (en) | 1981-04-24 | 1981-04-24 | Indicator placed in finder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57177134A true JPS57177134A (en) | 1982-10-30 |
| JPS636860B2 JPS636860B2 (en) | 1988-02-12 |
Family
ID=13194786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6225381A Granted JPS57177134A (en) | 1981-04-24 | 1981-04-24 | Indicator placed in finder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57177134A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0411665A2 (en) * | 1989-08-04 | 1991-02-06 | Canon Kabushiki Kaisha | Display device |
-
1981
- 1981-04-24 JP JP6225381A patent/JPS57177134A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0411665A2 (en) * | 1989-08-04 | 1991-02-06 | Canon Kabushiki Kaisha | Display device |
| US5404193A (en) * | 1989-08-04 | 1995-04-04 | Canon Kabushiki Kaisha | Display device superimposed in viewfinder with adjustable brightness |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS636860B2 (en) | 1988-02-12 |
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