Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1989-07-24
1991-10-22
Miller, Stanley D.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
12860002, 359 53, 359 74, G02F 113
Patent
active
050589997
ABSTRACT:
A liquid crystal device (10) includes at least two layers of encapsulated thermochromic, e.g., liquid crystal, material (14, 16) for providing a color response with respect to temperature, the temperature ranges of color response of the at least two liquid crystal layers being different, a mechanism (18) in the form of a particular pattern of thermochromic material and/or separate pattern device for distinguishing the temperature range in which the device is operational, and a support (20) for supporting the at least two liquid crystal layers and distinguishing mechanism for positioning with respect to a part.
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Mai Huy K.
Miller Stanley D.
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