DE153693C - - Google Patents
Info
- Publication number
- DE153693C DE153693C DENDAT153693D DE153693DA DE153693C DE 153693 C DE153693 C DE 153693C DE NDAT153693 D DENDAT153693 D DE NDAT153693D DE 153693D A DE153693D A DE 153693DA DE 153693 C DE153693 C DE 153693C
- Authority
- DE
- Germany
- Prior art keywords
- screen
- lens
- light
- setting screen
- compensation lens
- 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.)
- Active
Links
- 230000003287 optical Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE153693C true DE153693C (fr) |
Family
ID=420299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT153693D Active DE153693C (fr) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE153693C (fr) |
-
0
- DE DENDAT153693D patent/DE153693C/de active Active
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