Illuminated optical apparatus

Details Illuminated optical apparatus Illuminated optical apparatus

2009-12-30

2010-06-15

Martinez, Joseph (Department: 2873)

Optical: systems and elements

Lens

With viewed object or viewed field illumination

C362S276000

Reexamination Certificate

active

07738192

ABSTRACT:
A device may include a magnifying lens having a focal length that defines a focal plane, a light source providing visible light directed toward the focal plane, and a controller. The controller may be programmed to receive a signal indicative of the distance from the device to an object, cause the light source to emit visible light at a first brightness if the distance is at least substantially equal to the focal length of the lens, and cause the light source to emit visible light at a second brightness, dimmer than the first brightness, if the distance is not at least substantially equal to the focal length of the lens.

REFERENCES:
patent: 5097340 (1992-03-01), Tanabe et al.
patent: 5266791 (1993-11-01), Morizumi
patent: 5687400 (1997-11-01), Ishiguro et al.
patent: 7048406 (2006-05-01), Shih
patent: 7154112 (2006-12-01), Eubelen
patent: 2008/0192364 (2008-08-01), Schuttinger

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