Title:
HIGH LUMINOUS LIGHT SOURCE DEVICE
Document Type and Number:
Japanese Patent JP2547689
Kind Code:
B2
Abstract:
PURPOSE: To enable a light side of plastic fire to be used by installing a light source and a filter which is provided between the light source and one end face of a light guide and by which U. V. rays, infrared rays and specific light in the visible region are cut.
CONSTITUTION: After light beam of a lump 2 transmitted through a heat absorption filter 5 and a sharp cut filter 6, it reaches the end face 10A of the light guide 10. The sharp cut filter 6 is a filter to cut light of wave length ≤410nm sharply. Here when the lamp 2 is turned on, light beam transmits through the heat absorption filter 5 and the sharp cut filter 6 to reach the end face 10A of the light guide 10, transmitting through the inside of the light guide 10 and be emitted from the end face 10B and an object 200 is irradiated. At this time, the light beam transmitting through the inside of the light guide 10 is the light beam transmitted through the heat absorption filter 5 and the sharp cut filter 6, thus the light of wave length ≥700nm and ≤410nm is cut.
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Inventors:
YAMAMORI SHINJI
MISAWA YUTAKA
INOE MASAYUKI
MISAWA YUTAKA
INOE MASAYUKI
Application Number:
JP7744892A
Publication Date:
October 23, 1996
Filing Date:
March 31, 1992
Export Citation:
Assignee:
NIPPON KODEN KOGYO KK
International Classes:
F21V9/04; F21V9/06; G02B6/00; G02B6/42; (IPC1-7): G02B6/42; F21V9/04; F21V9/06; G02B6/00
Domestic Patent References:
| JP575020A | ||||
| JP59133507A | ||||
| JP6271605U |
Attorney, Agent or Firm:
Takashi Honda