CA1049820A - Dispositif de focalisation et mode d'agrandissement photographique - Google Patents
Dispositif de focalisation et mode d'agrandissement photographiqueInfo
- Publication number
- CA1049820A CA1049820A CA246,395A CA246395A CA1049820A CA 1049820 A CA1049820 A CA 1049820A CA 246395 A CA246395 A CA 246395A CA 1049820 A CA1049820 A CA 1049820A
- Authority
- CA
- Canada
- Prior art keywords
- viewing
- mirror
- distance
- focusing device
- angle
- 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
- 238000000034 method Methods 0.000 title claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 230000001154 acute effect Effects 0.000 claims description 9
- 239000005337 ground glass Substances 0.000 description 42
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Lenses (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA246,395A CA1049820A (fr) | 1976-02-24 | 1976-02-24 | Dispositif de focalisation et mode d'agrandissement photographique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA246,395A CA1049820A (fr) | 1976-02-24 | 1976-02-24 | Dispositif de focalisation et mode d'agrandissement photographique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1049820A true CA1049820A (fr) | 1979-03-06 |
Family
ID=4105303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA246,395A Expired CA1049820A (fr) | 1976-02-24 | 1976-02-24 | Dispositif de focalisation et mode d'agrandissement photographique |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1049820A (fr) |
-
1976
- 1976-02-24 CA CA246,395A patent/CA1049820A/fr not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2356620A (en) | Photographic justifying apparatus | |
| US5477283A (en) | Image projecting device | |
| JPH058554U (ja) | オーバヘツドプロジエクタ | |
| US4074322A (en) | Television projector | |
| US2112449A (en) | Photographic copying stand | |
| US2085498A (en) | Device and method for aerial survey | |
| CA1049820A (fr) | Dispositif de focalisation et mode d'agrandissement photographique | |
| US3944363A (en) | Focusing device and method of use thereof for photographic enlarger | |
| US2488146A (en) | Optical projection comparator with projected standard scales and templets therefor | |
| US3387530A (en) | Mirror reflex viewfinder with roof edge prism | |
| US4385325A (en) | Raster input scanner comprising two CCD arrays | |
| US2247113A (en) | Optical alignment device | |
| US3472589A (en) | Overhead projector | |
| US3988059A (en) | Projector | |
| US2595495A (en) | Focusing device | |
| JPS5930888Y2 (ja) | 光学系 | |
| US3625609A (en) | Combined focusing and probe device for photographic enlargers | |
| US3697179A (en) | Light measuring device | |
| JPS632445B2 (fr) | ||
| JPS6138567Y2 (fr) | ||
| JPH0381511U (fr) | ||
| US2791936A (en) | Photographic apparatus | |
| US3597092A (en) | Instrument for measuring a projected distance | |
| US2286977A (en) | Camera | |
| US2237730A (en) | Photographic printing easel |