Optical device

Details Optical device Optical device

G - Physics

02

F

G02F 1/01 (2006.01) G02F 1/35 (2006.01) G02F 3/00 (2006.01)

Patent

CA 2093538

An optical controlling device has a light transmitting medium showing a low transmittance for specific light wavelength .lambda.1 and a high transmittance for light wavelength .lambda.2 around said light wavelength .lambda.1, and a light emitting device emitting a light of light wavelength .lambda.1 or .lambda.2, and controls light intensity in accordance with changes in a controlled light through light irradiation and light transmission. An optical functional device has a light transmitting medium showing a low transmittance for specific light wavelength .lambda.1 and a high transmittance for light wavelengths .lambda.2 and .lambda.3 around said wavelength .lambda.1 (.lambda.2 < .lambda.1 < .lambda.3), and a light emitting device changing wavelength while accompanying a generation of hysteresis dependent upon the quantity of current infection or light irradiation, and emitting a light having light wavelength .lambda.1, .lambda.2 or .lambda.3. A light intensity transmitting through said light transmitting medium is maintained at a low-intensity or high- intensity state under the effect of said hysteresis, thereby a memory function is obtained.

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