Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2020/261968
Kind Code:
A1
Abstract:
The present invention provides an optical lens (10) enabling efficient light distribution control to be performed easily using a simple configuration. The lens includes a plurality of light distribution control parts (11) that correspond to respective rows of LEDs (22) and connected together in both side directions and determines optical paths of light from the LEDs (22) for the rows, respectively. The lengths of the optical paths guiding, in an optical axis direction, light incident from the LEDs (22) in the rows corresponding to light distribution control parts (11) sequentially decrease in order from one end side toward the other end side. Each of the light distribution control parts (11) emits light incident from the LED (22) in the corresponding row, from a position not interfering with the light distribution control part (11) adjacent on the other end side, in the identical direction of both side directions intersecting the optical axis of the LED (22).

Inventors:
KOJIMA YASUYO (JP)
KAMINAGA YOUMEI (JP)
Application Number:
JP2020/022589
Publication Date:
December 30, 2020
Filing Date:
June 08, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KOITO ELECTRIC IND LTD (JP)
International Classes:
B61D37/00; F21S43/14; F21S43/15; F21S43/20; F21V5/00; F21V5/04; F21V19/00; G02B17/08; F21W107/10; F21Y105/10; F21Y115/10
Attorney, Agent or Firm:
SUZUKI, Hideaki (JP)
Download PDF:



 
Previous Patent: OPTICAL LENS

Next Patent: ELECTRONIC MODULE