Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate
2006-08-08
2006-08-08
Spector, David N. (Department: 2873)
Optical: systems and elements
Lens
With variable magnification
C359S726000, C348S240990
Reexamination Certificate
active
07088520
ABSTRACT:
An optical apparatus includes a variable optical-property element to change its optical properties by applying an electric or magnetic field or temperature to a liquid crystal. In this way, the optical apparatus is reduced in thickness, and can be used in a camera, a microscope, etc.
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