Shielding device for the reduction of unwanted reflection from a

Details Shielding device for the reduction of unwanted reflection from a Shielding device for the reduction of unwanted reflection from a

1998-06-25

2000-01-25

Dowling, William

Optics: image projectors

Light shield, mask, hood, or diaphragm

353DIG5, G03B 2114

Patent

active

060171243

ABSTRACT:
The present invention comprises a shielding member located proximate to an overhead projector for reducing unwanted reflection from a writing surface of the overhead projector directed toward a user of the overhead projector. Angled support braces support the shielding member, and attach to the shielding member such that the shielding member tilts at an angle to better intercept the unwanted reflection.

REFERENCES:
patent: 3733436 (1973-05-01), Rose
patent: 3849598 (1974-11-01), Hoffberger, II et al.
patent: 5121984 (1992-06-01), Jones et al.
patent: 5172144 (1992-12-01), Hetrick
patent: 5214459 (1993-05-01), Al-Ani
patent: 5469235 (1995-11-01), Zako

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