Title:
LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2023128766
Kind Code:
A
Abstract:
To provide a lighting device that is a thin type, has a small orientation angle and little leakage light, and can accurately control a light beam using a liquid crystal lens.SOLUTION: A lighting device includes: a reflection cylinder 10 including a reflecting mirror inside thereof; and a liquid crystal lens assembly in which liquid crystal lenses 100, 200, 300, 400 are stacked in a vertical direction relative to an emission surface of the reflection cylinder 10 on a side of the emission surface. The liquid crystal lens assembly includes a light-shielding film 40 formed in a parallel direction relative to the emission surface of the reflection cylinder 10 and regulating an emission region of light from the liquid crystal lens assembly.SELECTED DRAWING: Figure 11
Inventors:
OKADA MASAFUMI
SUZUKI NOBUYUKI
HASEGAWA MAKOTO
SUZUKI NOBUYUKI
HASEGAWA MAKOTO
Application Number:
JP2022033350A
Publication Date:
September 14, 2023
Filing Date:
March 04, 2022
Export Citation:
Assignee:
JAPAN DISPLAY INC
International Classes:
F21S2/00; F21V9/40; F21V7/00; F21V7/04; F21V7/06; F21V11/08; G02F1/13; G02F1/1347; H01L33/58
Attorney, Agent or Firm:
Polaire Patent Attorneys Corporation