Viewing angle lens

Details Viewing angle lens Viewing angle lens

1998-06-17

1999-11-09

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

345 7, 340705, G02B 2710

Patent

active

059825502

ABSTRACT:
The present invention provides a secondary lens between the display lens and the vacuum florescent display. Both the lenses have an index of refraction greater than 1 which results in a momentary change in the viewing angle while the light passes through each lens. Since two lenses are used, the overall effective lens thickness for effective light shifting is increased while the cross sectional thickness of each lens remains uniform. Preferably, each lens is made of a polycarbonate material and has an index of refraction of 1.59. In another aspect of the present invention, the display lens is constructed of a smoke material and the secondary lens is clear.

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