Title:
ILLUMINATING DEVICE, AND ILLUMINATING SYSTEM
Document Type and Number:
Japanese Patent JP2023169042
Kind Code:
A
Abstract:
To easily adjust a light distribution.SOLUTION: An illuminating device 1 comprises a board 11, a plurality of light emitting elements (first light emitting elements 12), and a light distribution control member (first light distribution control member 13). The light distribution control member is formed in a long shape that is long in a first direction, and controls the light distribution of light emitted from the plurality of light emitting elements arranged on one principal surface (first principal surface 111) of the board 11. The light distribution control member controls the light distribution of the light emitted from the plurality of light emitting elements so that the 1/2 beam angle of the light becomes 20 degrees or less. A distance L1 between an emitting surface 121 of each of the plurality of light emitting elements and an incidence surface 133 of the light distribution control member in a second direction D2 is 3.17 times or more and 7 times or less as long as a length W1 of each of the plurality of light emitting elements in a third direction D3. An angle θ1 formed by an optical axis A1 of each of the plurality of light emitting elements and an optical axis A2 of the light distribution control member is 12 degrees or less.SELECTED DRAWING: Figure 6
Inventors:
MATSUBAYASHI YOKO
TSUKADA NAOKI
TAKEMOTO EMI
OKAMOTO RYO
TSUKADA NAOKI
TAKEMOTO EMI
OKAMOTO RYO
Application Number:
JP2022080494A
Publication Date:
November 29, 2023
Filing Date:
May 16, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
F21S2/00; F21V5/04; F21V14/06
Attorney, Agent or Firm:
Hokuto Patent Attorneys Office