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Light modulating device

Patent ·
OSTI ID:7069094
;
In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity are disclosed. 1 fig.
Research Organization:
EIC Laboratories Inc
DOE Contract Number:
AC03-82CE30746
Assignee:
EIC Labs., Inc., Norwood, MA (United States)
Patent Number(s):
A; US 4889414
Application Number:
PPN: US 6-779872
OSTI ID:
7069094
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
42 ENGINEERING
420000* -- Engineering
CERAMICS
CHARGED PARTICLES
CRYSTALS
CURRENTS
ELECTRIC CURRENTS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
IONS
LEPTONS
LIGHT TRANSMISSION
MODULATION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
REFLECTIVITY
SURFACE PROPERTIES