(under subclass 350) Subject matter having an element which restricts the direction of vibration of radiant energy.
(1) Note. The restriction may have a time variation.
(2) Note. The polarized radiant energy may be visible light accompanying the infrared or ultraviolet radiation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
359, for an IR/UV multilayer filter or multilayer reflector.
360, for an IR/UV multilayer filter or multilayer reflector having a metal layer.
372+, for plural optical axis microscope. 419+, for plural optical axis telescope.
483, for a visible light polarizer absent any infrared or ultraviolet characteristic.
486, for light polarization without modulation or external energy by grid or dipoles.
487, for polarization without modulation by reflection or refraction.
490+, for polarization without modulation by dichroic medium, which transmits light of one color and reflects light of the complementary color with little light absorbed.
494+, for polarization without modulation by a birefringent element, which divides a ray or beam of energy into two polarized rays or beams separated by 90 degrees (known as ordinary and extraordinary).
SEE OR SEARCH CLASS
283, Printed Matter,
88, for IR filter with electromagnetic radiation having revealable concealed information, fraud preventer or detector, use preventer or detector, or identifier.
313, Electric Lamp and Discharge Devices,
112, for polarizer or special ray transmission (e.g., filter) with an electric discharge device.
