GEP19940065B - Projection Lens - Google Patents
Projection LensInfo
- Publication number
- GEP19940065B GEP19940065B GEAP1992128A GEAP1992000128A GEP19940065B GE P19940065 B GEP19940065 B GE P19940065B GE AP1992128 A GEAP1992128 A GE AP1992128A GE AP1992000128 A GEAP1992000128 A GE AP1992000128A GE P19940065 B GEP19940065 B GE P19940065B
- Authority
- GE
- Georgia
- Prior art keywords
- lens
- projection lens
- projection
- focus
- concave
- Prior art date
Links
Landscapes
- Lenses (AREA)
Abstract
This invention refers to optical instrument engineering and can be used in projection TV-sets. Technical result to provide simplified construction and increased quality of image. Projection lens comprises concave lens 1 provided with concave aspherical surface, biconvex lens 2 with positive meniscus. All the lenses are made of plastic. Focus distanse of the projection lens is 140 mm, relative hole 1:1. There is indicated correlation for selection of focus distance, radius and thickness of lens. 2 ind. cl., 1 fig.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GEAP1992128A GEP19940065B (en) | 1992-08-13 | 1992-08-13 | Projection Lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GEAP1992128A GEP19940065B (en) | 1992-08-13 | 1992-08-13 | Projection Lens |
Publications (1)
Publication Number | Publication Date |
---|---|
GEP19940065B true GEP19940065B (en) | 1994-05-25 |
Family
ID=81756763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GEAP1992128A GEP19940065B (en) | 1992-08-13 | 1992-08-13 | Projection Lens |
Country Status (1)
Country | Link |
---|---|
GE (1) | GEP19940065B (en) |
-
1992
- 1992-08-13 GE GEAP1992128A patent/GEP19940065B/en unknown
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