Invention Grant
- Patent Title: PDT magnifier camera illumination
- Patent Title (中): PDT放大镜相机照明
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Application No.: US11689019Application Date: 2007-03-21
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Publication No.: US07905648B2Publication Date: 2011-03-15
- Inventor: Mike Hanney , Peter Iezzi , Todd Conard
- Applicant: Mike Hanney , Peter Iezzi , Todd Conard
- Applicant Address: US FL St. Petersburg
- Assignee: Freedom Scientific, Inc.
- Current Assignee: Freedom Scientific, Inc.
- Current Assignee Address: US FL St. Petersburg
- Agency: Gray Robinson, P.A.
- Agent Michael J. Colitz, III
- Main IPC: F21V7/04
- IPC: F21V7/04

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.
Public/Granted literature
- US20070223906A1 PDT Magnifier Camera Illumination Public/Granted day:2007-09-27
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