BE451753A - - Google Patents
Info
- Publication number
- BE451753A BE451753A BE451753DA BE451753A BE 451753 A BE451753 A BE 451753A BE 451753D A BE451753D A BE 451753DA BE 451753 A BE451753 A BE 451753A
- Authority
- BE
- Belgium
- Prior art keywords
- reflex
- image
- lens
- eyepiece
- operator
- Prior art date
Links
- 230000011514 reflex Effects 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000000717 retained effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000005338 frosted glass Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000272168 Laridae Species 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012795 verification Methods 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
- G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Structure And Mechanism Of Cameras (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE451753A true BE451753A (enrdf_load_stackoverflow) |
Family
ID=106529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE451753D BE451753A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE451753A (enrdf_load_stackoverflow) |
-
0
- BE BE451753D patent/BE451753A/fr unknown
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