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Title:
OPTICAL LIGHT SOURCE DEVICE
Document Type and Number:
Japanese Patent JPH03102701
Kind Code:
A
Abstract:

PURPOSE: To minimize infrared radiation and maximize visual light radiation, by making up a radiation means out of an array of cavities of a certain substance and adapting the size of the cavities to allow this substance to transmit only electromagnetic radiation with wavelengths longer than a predetermined value.

CONSTITUTION: This device is equipped with a plurality of separate xenon radiation sources 10 disposed in oblong, square cross-section waveguide cavities 12, and each cavity is formed of side face members 14A to 14D each having a lateral size of 350 nm and a length of 700 nm. Each waveguide cavity 12 has a cut-off wavelength of 700 nm without a mode for radiating wavelengths longer than 700 nm. Electron transition of discharge plasma, causing infrared radiation with a wavelength of 700 nm or longer in free space, is thereby prevented from being generated in waveguide cavity discharge. Infrared radiation can be prevented and luminousity is improved.


Inventors:
Waymouth, John F.
Application Number:
JP1990000239787
Publication Date:
April 30, 1991
Filing Date:
September 10, 1990
Export Citation:
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Assignee:
WAYMOUTH JOHN F
International Classes:
G02B6/00; F21H1/00; G02B6/032; G02B6/122; G02B6/13; H01J61/02; H01J61/38; H01J61/82; H01K1/00; H01K1/14; (IPC1-7): F21H1/00; G02B6/00; G02B6/12; G02B6/20; H01J61/38



 
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