GB385104A - Improvements in and relating to episcopes or apparatus for the projection of opaque objects - Google Patents
Improvements in and relating to episcopes or apparatus for the projection of opaque objectsInfo
- Publication number
- GB385104A GB385104A GB3444631A GB3444631A GB385104A GB 385104 A GB385104 A GB 385104A GB 3444631 A GB3444631 A GB 3444631A GB 3444631 A GB3444631 A GB 3444631A GB 385104 A GB385104 A GB 385104A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- casing
- lamps
- ring
- carrier
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/06—Projectors or projection-type viewers; Accessories therefor affording only episcopic projection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
385,104. Optical-projection apparatus. CHARLIER, P. L., The Nook, Ben Rhydding, Ilkley, Yorkshire. Dec. 12, 1931, No. 34446. [Class 97 (i).] An episcopic projector comprises a casing B, a tube T carrying a lens system A adjustable for focusing, and lamps Ll arranged in a ring around the tube T, or around a tube Tx forming an extension of it, to illuminate the object in a carrier S. The lamps may be of ordinary form, or may comprise a tubular lamp of ring form or two or more such lamps forming a ring ; they may be carried by a reflecting or other shield L secured to the tube or to a screen C, and may extend close to the tube but not materially beyond its end T<1>. The carrier S may be slidable in a lid B<1> having an aperture B<2>, and the casing may have an asbestos or like lining and ventilation apertures. The casing may carry an erecting mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3444631A GB385104A (en) | 1931-12-12 | 1931-12-12 | Improvements in and relating to episcopes or apparatus for the projection of opaque objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3444631A GB385104A (en) | 1931-12-12 | 1931-12-12 | Improvements in and relating to episcopes or apparatus for the projection of opaque objects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB385104A true GB385104A (en) | 1932-12-22 |
Family
ID=10365758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3444631A Expired GB385104A (en) | 1931-12-12 | 1931-12-12 | Improvements in and relating to episcopes or apparatus for the projection of opaque objects |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB385104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4721380A (en) * | 1985-02-22 | 1988-01-26 | Constantin Systems, Inc. | Portable opaque projector |
| USRE32648E (en) * | 1982-04-07 | 1988-04-19 | Constantin Systems, Inc. | Opaque projector |
-
1931
- 1931-12-12 GB GB3444631A patent/GB385104A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE32648E (en) * | 1982-04-07 | 1988-04-19 | Constantin Systems, Inc. | Opaque projector |
| US4721380A (en) * | 1985-02-22 | 1988-01-26 | Constantin Systems, Inc. | Portable opaque projector |
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