Light modulating device

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:867223

Rauh, R David ^[1]; Goldner, Ronald B ^[2]

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1. Newton, MA
2. Lexington, MA

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.

• Research Organization: EIC Laboratories Inc
• DOE Contract Number: AC03-82CE30746
• Assignee: EIC Laboratories, Inc. (Norwood, MA)
• Patent Number(s): US 4889414
• OSTI ID: 867223
• Country of Publication: United States
• Language: English

Related Subjects

light
modulating
device
transmitting
means
controlling
transmissivity
including
ceramic
reversibly
electrochromic
crystalline
element
highly
reflective
injected
electrons
charge
compensating
transmissive
removed
characterized
reflectivity
50
10
injecting
response
applied
electrical
current
polarity
removing
crystalline element
transmitting light
highly reflective
electrical current
charge compensating
applied electric
modulating device
light modulating
/359/