Calculator projection display

Details Calculator projection display Calculator projection display

1993-09-29

1995-02-21

Cuchlinski, Jr., William A.

Optics: image projectors

Housing

353 61, 353122, G03B 2116

Patent

active

053920813

ABSTRACT:
A projection display (10) for an electronic data processing device (14) for use in conjunction with an overhead projector (12) is provided. The projection display (10) includes a display with a light transmitting screen (30), and the screen (30) is framed by a uniquely constructed housing (32). The housing (32) defines a free convection air channel below the screen (30) to conduct a cooling air flow. The air flow in the free convection air channel substantially eliminates the problem of image deterioration due to screen overheating.

REFERENCES:
patent: 4257695 (1981-03-01), Langworthy
patent: 4904079 (1990-02-01), Yoshimura et al.
patent: 5168294 (1992-12-01), Davis et al.
patent: 5255029 (1993-10-01), Vogeley et al.
patent: 5260730 (1993-11-01), Williams et al.

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