PDT magnifier camera illumination

Details PDT magnifier camera illumination PDT magnifier camera illumination

2011-03-15

2011-03-15

O Shea, Sandra L (Department: 2875)

Illumination

Edge lighted panel

Light source

C362S098000, C362S455000, C362S555000, C362S561000, C362S628000, C349S064000, C349S200000, C345S004000, C345S589000, C396S155000, C382S313000

Reexamination Certificate

active

07905648

ABSTRACT:
A device that enlarges text and images to enable a low vision person to see the text and images includes a hollow structure including a top housing and a bottom housing that are connected to one another. A camera aperture is formed in the bottom housing and a transparent light guide lens is disposed in closing relation to the camera aperture so that all light entering the camera aperture must first pass through the light guide lens. A cavity formed in the light guide lens is bounded by walls that are positioned at a critical angle. Light-emitting diodes are positioned at critical locations about the periphery of the light guide lens to illuminate the object being viewed.

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patent: 2005/0062847 (2005-03-01), Johnston
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patent: 2005/0212721 (2005-09-01), Kuwahara et al.
patent: 2007/0109529 (2007-05-01), Wagner et al.
patent: 2003-795696 (2002-03-01), None
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patent: 00/39744 (2000-07-01), None
U.S. Appl. No. 11/308,298, filed Mar. 15, 2006, Carlos Rodrigez.
U.S. Appl. No. 60/595,003, filed May 26, 2005, Carlos Rodrigez.

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