GB2238137B - Optical system - Google Patents
Optical systemInfo
- Publication number
- GB2238137B GB2238137B GB8925599A GB8925599A GB2238137B GB 2238137 B GB2238137 B GB 2238137B GB 8925599 A GB8925599 A GB 8925599A GB 8925599 A GB8925599 A GB 8925599A GB 2238137 B GB2238137 B GB 2238137B
- Authority
- GB
- United Kingdom
- Prior art keywords
- optical system
- optical
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0257—Diffusing elements; Afocal elements characterised by the diffusing properties creating an anisotropic diffusion characteristic, i.e. distributing output differently in two perpendicular axes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8925599A GB2238137B (en) | 1989-11-13 | 1989-11-13 | Optical system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8925599A GB2238137B (en) | 1989-11-13 | 1989-11-13 | Optical system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8925599D0 GB8925599D0 (en) | 1990-01-04 |
GB2238137A GB2238137A (en) | 1991-05-22 |
GB2238137B true GB2238137B (en) | 1993-11-03 |
Family
ID=10666210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8925599A Expired - Fee Related GB2238137B (en) | 1989-11-13 | 1989-11-13 | Optical system |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2238137B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5768017A (en) * | 1994-10-31 | 1998-06-16 | International Business Machines Corporation | Optical system for producing uniform line illumination |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB487541A (en) * | 1936-05-20 | 1938-06-22 | Philips Nv | Improvements in or relating to searchlight or picture-projection installations |
-
1989
- 1989-11-13 GB GB8925599A patent/GB2238137B/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB487541A (en) * | 1936-05-20 | 1938-06-22 | Philips Nv | Improvements in or relating to searchlight or picture-projection installations |
Also Published As
Publication number | Publication date |
---|---|
GB2238137A (en) | 1991-05-22 |
GB8925599D0 (en) | 1990-01-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19941113 |