GB605562A - Improvements in and relating to episcopic projection - Google Patents
Improvements in and relating to episcopic projectionInfo
- Publication number
- GB605562A GB605562A GB1085345A GB1085345A GB605562A GB 605562 A GB605562 A GB 605562A GB 1085345 A GB1085345 A GB 1085345A GB 1085345 A GB1085345 A GB 1085345A GB 605562 A GB605562 A GB 605562A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- systems
- illuminating
- another form
- mirror
- 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
605,562. Optical projection apparatus. MARTIN, B. April 30, 1945, No. 10853. [Class 97 (i)] In an episcopic projector an optical system or systems co-operate with a corresponding source or sources of light to project upon the object a beam or beams of light, each system comprising a frontally disposed truncated ellipsoidal reflector and a concentric refractor, the light source being disposed at the common focus of the reflector and refractor. Alternatively one light source may co-operate with a plurality of optical systems. In the form shown, light from a single lamp 5 is projected on to the object 4 through two optical systems each consisting of concentric ellipsoidal reflectors 12, 13 and a lens 14, a mirror 8 and a lens 9. Light is reflected from the object and an inclined mirror 2 into an objective with axis perpendicular to the plane of the figure. The illuminating system is in a housing separated from that which contains the object by a wall 11 with apertures 10 for the passage of the light beams. Heat filters may be provided in the light beams at 68. Uniformity of illumination may be controlled by adjusting the lenses 9. In another form of apparatus projection takes place directly from the object without the mirror 2, the two illuminating systems having no deflecting mirrors 8, and having separate lamps. In another form, two double illuminating systems as in the figure are provided side-by-side. In another form the illuminating system is placed at the bottom of the housing and the object is placed face downwards on a transparent panel at the top. Specification 534,455, [Group XI], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1085345A GB605562A (en) | 1945-04-30 | 1945-04-30 | Improvements in and relating to episcopic projection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1085345A GB605562A (en) | 1945-04-30 | 1945-04-30 | Improvements in and relating to episcopic projection |
Publications (1)
Publication Number | Publication Date |
---|---|
GB605562A true GB605562A (en) | 1948-07-27 |
Family
ID=9975521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1085345A Expired GB605562A (en) | 1945-04-30 | 1945-04-30 | Improvements in and relating to episcopic projection |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB605562A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2225446A (en) * | 1988-11-25 | 1990-05-30 | Plus Kk | Opaque projector having a mirror on each side of a projection mirror. |
-
1945
- 1945-04-30 GB GB1085345A patent/GB605562A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2225446A (en) * | 1988-11-25 | 1990-05-30 | Plus Kk | Opaque projector having a mirror on each side of a projection mirror. |
FR2639723A1 (en) * | 1988-11-25 | 1990-06-01 | Plus Kk | REFLECTED BRIGHT REAL IMAGE PROJECTOR |
GB2225446B (en) * | 1988-11-25 | 1993-02-03 | Plus Kk | Opaque projector |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DK0391287T3 (en) | operation lamp | |
SU990091A3 (en) | Illumination device for microscope | |
GB1320671A (en) | Incident-light dark ground illumination systems for microscopes | |
US1626615A (en) | Illuminating means | |
GB605562A (en) | Improvements in and relating to episcopic projection | |
JPS5557840A (en) | Overhead projector capable of projecting on vertical plane | |
GB818229A (en) | Improvements in or relating to optical projection systems | |
JPS6449017A (en) | Projection optical system | |
GB1085325A (en) | Improvements in and relating to signal searchlights | |
CN208634947U (en) | A kind of lens, lens subassembly and street lamp | |
ES339487A1 (en) | Surgical lighting apparatus | |
GB1459936A (en) | Apparatus for illuminating minute targets | |
GB1017928A (en) | Lighting system for projectors | |
GB825638A (en) | Improvements relating to lighting apparatus | |
GB646642A (en) | Improvements in colour lighting apparatus | |
GB781458A (en) | Improvements in and relating to thread illuminators for textile machines | |
SU87703A1 (en) | Device for reducing projector light losses | |
SU61709A1 (en) | Device for controlling projection in daytime movie installations | |
SU451038A1 (en) | Lighting projection system | |
GB525350A (en) | Improvements in illuminating devices | |
SU853379A1 (en) | Fourier spectrometer illuminator | |
GB674193A (en) | Improvements in or relating to optical comparators | |
GB1204222A (en) | Optical projection system | |
SU1742778A1 (en) | Illuminating system for projector | |
SU1543380A1 (en) | Episcope |