FR859182A - Clear viewfinder for mirror SLR cameras - Google Patents
Clear viewfinder for mirror SLR camerasInfo
- Publication number
- FR859182A FR859182A FR859182DA FR859182A FR 859182 A FR859182 A FR 859182A FR 859182D A FR859182D A FR 859182DA FR 859182 A FR859182 A FR 859182A
- Authority
- FR
- France
- Prior art keywords
- mirror
- slr cameras
- clear viewfinder
- viewfinder
- clear
- 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
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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/18—Focusing aids
- G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE859182X | 1939-02-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR859182A true FR859182A (en) | 1940-12-12 |
Family
ID=6790053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR859182D Expired FR859182A (en) | 1939-02-17 | 1939-08-18 | Clear viewfinder for mirror SLR cameras |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR859182A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1213233B (en) * | 1961-03-17 | 1966-03-24 | Rollei Werke Franke Heidecke | Metal folding light shaft for the focusing screen of single lens reflex cameras |
-
1939
- 1939-08-18 FR FR859182D patent/FR859182A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1213233B (en) * | 1961-03-17 | 1966-03-24 | Rollei Werke Franke Heidecke | Metal folding light shaft for the focusing screen of single lens reflex cameras |
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