GB626447A - Binocular viewing apparatus for microfilms and like transparencies - Google Patents
Binocular viewing apparatus for microfilms and like transparenciesInfo
- Publication number
- GB626447A GB626447A GB10154/45A GB1015445A GB626447A GB 626447 A GB626447 A GB 626447A GB 10154/45 A GB10154/45 A GB 10154/45A GB 1015445 A GB1015445 A GB 1015445A GB 626447 A GB626447 A GB 626447A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- viewing
- glass
- prisms
- picture
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
- G02B30/36—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using refractive optical elements, e.g. prisms, in the optical path between the images and the observer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Telescopes (AREA)
Abstract
626,447. Optical apparatus. BERNARD, M. E. April 23, 1945, No. 10154. Convention date, June 29, 1943. [Class 97 (i)] Apparatus for viewing kinematographic and other small films comprises a closed rectangular box with a film support at one side and a binocular optical viewing system at the other, the latter having a field of view of about 45 degrees and a magnification of at least 5 to give a proper perspective when viewing images on 35 mm. film. The casing A, Fig. 5, contains a guide C for the film H ,a ground glass D for illumination and eyepieces B<SP>1</SP>, B<SP>2</SP> with prisms P<SP>1</SP>, P<SP>2</SP>. A plano-convex glass E gives added magnification but both the glass E and the prisms may be omitted. The distance between the eypieces may be adjusted by a screw (not shown). As shown in Fig. 7 the casing A has a surface G carrying a pair of binoculars L<SP>1</SP>, L<SP>2</SP>, a lens E and reflecting prism system P, Q, permitting each eye to view the film. For opaque pictures a rotatable mirror R reflects light on to the picture C. Instead of the prism system PQ mirrors may be used or the system omitted and the axis of the telescopes L<SP>1</SP>, L<SP>2</SP> made to converge on to the picture.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR626447X | 1943-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB626447A true GB626447A (en) | 1949-07-15 |
Family
ID=8988375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10154/45A Expired GB626447A (en) | 1943-06-29 | 1945-04-23 | Binocular viewing apparatus for microfilms and like transparencies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB626447A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5680250A (en) * | 1994-11-14 | 1997-10-21 | Salwin Pty. Ltd. | Viewing assembly including prisms and mirrors rotatable about axes transverse to the line of sight |
| CN112782840A (en) * | 2019-11-11 | 2021-05-11 | 诠兴国际电子有限公司 | Optical telescope |
-
1945
- 1945-04-23 GB GB10154/45A patent/GB626447A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5680250A (en) * | 1994-11-14 | 1997-10-21 | Salwin Pty. Ltd. | Viewing assembly including prisms and mirrors rotatable about axes transverse to the line of sight |
| CN112782840A (en) * | 2019-11-11 | 2021-05-11 | 诠兴国际电子有限公司 | Optical telescope |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3200702A (en) | Stereoscopic projection apparatus | |
| US2403733A (en) | Stereoscopic optical system | |
| US3357769A (en) | Optical viewing apparatus | |
| US3575082A (en) | Albada viewfinder having three lens components | |
| US2517170A (en) | Binocular viewing apparatus for microfilms and the like | |
| US2313562A (en) | Stereoscope | |
| US3797915A (en) | Binocular rangefinder-viewfinder with fresnel optics | |
| US2782681A (en) | Magnifying reflection viewer for stereoscopic pictures | |
| US2336330A (en) | Range finder | |
| US2788707A (en) | Projection system for stereoscopic images | |
| US2488177A (en) | Device for taking composite motion pictures | |
| US2363427A (en) | Optical device for viewing photographic images | |
| GB626447A (en) | Binocular viewing apparatus for microfilms and like transparencies | |
| GB711367A (en) | Improvements in or relating to stereoscopic viewing apparatus | |
| US3719422A (en) | A binocular rangefinder-viewfinder with fresnel optics | |
| GB1275917A (en) | Improvements in high magnification optical apparatus | |
| GB908319A (en) | A binocular viewer for viewing one picture at a time | |
| US2393782A (en) | Ocular | |
| GB851404A (en) | Improvements in or relating to stereo viewers | |
| GB634890A (en) | Improvements in or relating to stereoscopic photography and kinematography | |
| GB677639A (en) | Improvements in or relating to reflex view-finders for photographic or motion picture cameras | |
| GB476147A (en) | Improvements in telescopes | |
| GB923925A (en) | Improvements relating to anamorphosing optical systems | |
| GB913921A (en) | Improvements relating to viewing devices for x-ray image amplifiers | |
| SU112343A1 (en) | Focusing magnifying glass for synchronous motion picture camera with mirror obturator |