Title:
LIGHT DISTRIBUTION CONTROL MEMBER, LIGHTING DEVICE AND CAMERA FLASH MODULE
Document Type and Number:
Japanese Patent JP2015204224
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a light flux control member, a lighting device and a camera flash module capable of controlling so that a light distribution characteristic of irradiation light in a direction X and a direction Y crossing at a right angle in a plane to be irradiated may become a non-rotational symmetrical state in the direction X and the direction Y and a desired light distribution characteristic, capable of optionally controlling illumination intensity from a center of a reference plane to four corners of desired range when light is irradiated against a predetermined irradiated reference plane and assuring a sufficient illumination intensity in respect to a central illumination intensity.SOLUTION: This invention relates to a light distribution control member for controlling distribution of light emitted from a light emitting element in which a plurality of lenses having a top part, a side part formed from the top part in a divergent shape and a bottom part becoming a light emitting surface corresponding to the light emitting element.
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Inventors:
YAMAKAWA AKIO
HIROSHIMA TAKESHI
HIROSHIMA TAKESHI
Application Number:
JP2014083603A
Publication Date:
November 16, 2015
Filing Date:
April 15, 2014
Export Citation:
Assignee:
NISSEI TECHNOLOGY CORP
International Classes:
F21V5/02; F21L4/00; F21S2/00; F21V5/00; F21V5/04; G02B3/02; G02B5/04; G03B15/02; G03B15/05
Attorney, Agent or Firm:
Minoru Omaki