DE2507515A1
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Overhead projector for transparent writing support sheets - has internal reflector mirror and fresnel lens system
Assignee: Demolux & Co Kg 6070 Langen De GmbH
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Filing: 1975-02-21
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Granted: —
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Expires: 1995-02-21
Abstract
Abstract The overhead type projector has a housing supporting the transparent writing surface, and with a light source and cooling face within the housing, and a deflector mirror and Fresnel lens with right angle cut edges attached, having a support arm for the projection head counting an objective and pivoting or lockable mirror, is constructed such that the height of the housing (1) is smaller than its length and width. The reflector mirror (3) encloses an angle of less than 40' with the floor of the housing (4) and the light source which illuminates it is situated close to the upper edge of the fresnel lens (6).
Inventors
- 👤 Rainer Landsee
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-09 09:55
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/132
Claims Analysis
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References Cited (Backward Citations)
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