GB811970A - Improvements in oval beam lens - Google Patents
Improvements in oval beam lensInfo
- Publication number
- GB811970A GB811970A GB15131/57A GB1513157A GB811970A GB 811970 A GB811970 A GB 811970A GB 15131/57 A GB15131/57 A GB 15131/57A GB 1513157 A GB1513157 A GB 1513157A GB 811970 A GB811970 A GB 811970A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ridges
- lens
- inmost
- oval
- spotlight
- 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
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
Abstract
811,970. Spotlight lenses. KLIEGL BROS. UNIVERSAL ELECTRIC STAGE LIGHTING CO. Inc. May 13, 1957 [May 17, 1956], No. 15131/57. Class 75(2) A spotlight lens for producing an oval beam in which the ratio of the height to the width of the oval remains constant for all positions of the light source relative to the lens, comprises a substantially flat plate of glass 1 having on the light incident face a system of arcuate ridges 8 concave towards one diameter of the lens, each ridge forming part of at least one negative lens surface, and on the light emergent face a system of concentric annular ridges 12 each forming part of a positive lens surface. The radii of curvature of the ridges 8 may increase progressively from the inmost ridges outwards. A surface 10 free from ridges may be provided between the inmost ridges and this surface and that of the wider ridges may be provided with shallow flutes 11. The portions 14 of the lens between the annular ridges 12 may be coated with opaque paint.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US811970XA | 1956-05-17 | 1956-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB811970A true GB811970A (en) | 1959-04-15 |
Family
ID=22162686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15131/57A Expired GB811970A (en) | 1956-05-17 | 1957-05-13 | Improvements in oval beam lens |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB811970A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2437769C1 (en) * | 2010-11-23 | 2011-12-27 | Дмитрий Викторович Коновалов | Polymer moulded translucent article |
| EP3982167A1 (en) * | 2020-10-06 | 2022-04-13 | TRUMPF Photonic Components GmbH | Diffusor lens, light source, method of fabricating a light source and method of illuminating a scene |
-
1957
- 1957-05-13 GB GB15131/57A patent/GB811970A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2437769C1 (en) * | 2010-11-23 | 2011-12-27 | Дмитрий Викторович Коновалов | Polymer moulded translucent article |
| WO2012070979A1 (en) * | 2010-11-23 | 2012-05-31 | Konovalov Dmitri Viktorovich | Polymeric shaped translucent article |
| EP3982167A1 (en) * | 2020-10-06 | 2022-04-13 | TRUMPF Photonic Components GmbH | Diffusor lens, light source, method of fabricating a light source and method of illuminating a scene |
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