LIGHTING DEVICE

WIPO Patent Application WO/2023/276854

A1

This lighting device comprises a housing, a first light source, a first lens optical system, and a shielding part. The housing has a first opening. The first lens optical system includes at least one first lens positioned between a first emission section of the first light source and the first opening of the housing in the path of first light, and images the first light from the first emission part on a virtual image surface on the first opening side to emit the first light from the first opening. The shielding part has a second opening through which the first light L1 passes. Portion of the first light is incident on the shielding part. The angle formed at the first emission part by both outer-side light rays of the first light after passing through the second opening of the shielding part is smaller than the angle formed at the first emission part by both outer-side light rays of the first light before passing through the second opening of the shielding part.

WO/2019/049262	CEILING-EMBEDDED TYPE ILLUMINATION DEVICE
JP6252887	Lighting installation

TAKEUCHI ERI (JP)

PCT/JP2022/025147

January 05, 2023

June 23, 2022

Click for automatic bibliography generation  

KYOCERA CORP (JP)

F21S8/02; F21V11/10; F21V13/02; F21V13/12; F21V14/06; G02B1/118; G02B5/00; G02B7/02; G02B7/04; F21Y115/30

WO2007105647A1

2007-09-20

US20130063951A1	2013-03-14
JP2021512466A	2021-05-13
US10415799B1	2019-09-17
JP2009021139A	2009-01-29
JP2021022741A	2021-02-18
JP2017045936A	2017-03-02
JPH0343903A	1991-02-25
JP2017147025A	2017-08-24

YOSHITAKE Hidetoshi et al. (JP)

View/Download PDF      PDF Help

Previous Patent: IMAGE PROCESSING DEVICE, METHOD, AND IMAGE PROCESSING SYSTEM

Next Patent: MACHINE TOOL AND METHOD FOR OPERATING MACHINE TOOL