Title:
LIGHT SOURCE EMPLOYING REFLECTIVE LED
Document Type and Number:
Japanese Patent JPH0936433
Kind Code:
A
Abstract:
To obtain a high luminance reflective LED applicable to an apparatus requiring a large quantity of light and having a significant effect on the fluctuation in the quantity of light by eliminating fluctuation in the quantity of light to be emitted.
A dummy block 34 is provided between a chip 10BL and a lead frame 26 and the chip 10BL is disposed while being shifted slightly from the focal point of a parabolic mirror. This structure suppresses fluctuation in the quantity of light in a region where the parallelism is substantially sustained for the light reflected from the parabolic mirror and it can be employed as a light source for color conditioning requiring a color image.
Inventors:
KATAKURA KAZUHIKO
YAMAZAKI SHIGERU
SUEHIRO YOSHINOBU
YAMAZAKI SHIGERU
SUEHIRO YOSHINOBU
Application Number:
JP18029795A
Publication Date:
February 07, 1997
Filing Date:
July 17, 1995
Export Citation:
Assignee:
FUJI PHOTO FILM CO LTD
IWASAKI ELECTRIC CO LTD
IWASAKI ELECTRIC CO LTD
International Classes:
F21V19/00; F21S2/00; F21V7/04; H01L33/54; H01L33/56; H01L33/60; H01L33/62; F21Y101/02; (IPC1-7): H01L33/00; F21Q3/00; F21V19/00
Attorney, Agent or Firm:
Atsushi Nakajima (4 people outside)
Next Patent: CHIP TYPE LIGHT EMITTING DIODE