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Patent Searching and Data


Title:
ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/153394
Kind Code:
A1
Abstract:
The present invention is an illumination device comprising: a light source; a collimator lens that is positioned on the optical axis, the collimator lens being for emitting collimated light upon having light emitted from the light source incident thereon; and a diffusion lens that is positioned on the emission-surface side of the collimator lens, the diffusion lens being for diffusing said collimated light upon the light being incident thereon. The diffusion lens is provided with: a diffusion section for diffusing central light of the collimated light emitted from the central portion of the emission surface of the collimator lens; and a non-diffusion section that transmits peripheral light of the collimated light emitted from outside the central portion of the emission surface of the collimator lens, without diffusing said peripheral light.

Inventors:
MIZUKAMI TOSHINARI (JP)
MIZUKI YOSUKE (JP)
Application Number:
PCT/JP2021/001950
Publication Date:
August 05, 2021
Filing Date:
January 21, 2021
Export Citation:
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Assignee:
STANLEY ELECTRIC CO LTD (JP)
International Classes:
F21S2/00; F21V5/00; F21V5/04; G02B3/00; G02B17/08; F21Y115/10
Domestic Patent References:
WO2017002725A12017-01-05
Foreign References:
JP2014022077A2014-02-03
JP2016009065A2016-01-18
Attorney, Agent or Firm:
IGARASHI Shozo (JP)
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