Title:
LIGHTING FIXTURE UNIT
Document Type and Number:
Japanese Patent JP2020107494
Kind Code:
A
Abstract:
To prevent erosion of a seal portion of a spatial light modulator by external light, in a lighting fixture unit including the reflection-type spatial light modulator.SOLUTION: A plate-like member 32 is disposed between a vertical face portion 40A of a bracket 40 supporting a spatial light modulator 30 at a unit front side with respect to the spatial light modulator, and the spatial light modulator 30, and an opening portion 32a surrounding a reflection control portion 30A in a manner of covering a seal portion 30D from the unit front side, is formed on the plate-lie member 32. Thus convergent light is shielded by the plate-like member 32 even when external light is transmitted through a projection lens 72 at an angle to be converged to a seal portion 30D, and erosion of the seal portion 30D is prevented. Further by applying a constitution in which a gasket 34 is disposed between the plate-like member 32 and a housing portion 30B, the plate-like member 32 is supported without applying an excessive load to the spatial light modulator 30, and a function of the spatial light modulator 30 is not degraded.SELECTED DRAWING: Figure 14
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Inventors:
SATO TAKAYOSHI
Application Number:
JP2018245151A
Publication Date:
July 09, 2020
Filing Date:
December 27, 2018
Export Citation:
Assignee:
KOITO MFG CO LTD
International Classes:
F21S45/10; F21S41/147; F21S41/20; F21S41/26; F21S41/29; F21S41/365; F21S41/675; F21S45/50
Domestic Patent References:
| JP2017191745A | 2017-10-19 | |||
| JP2017054608A | 2017-03-16 | |||
| JP2016091976A | 2016-05-23 |
Attorney, Agent or Firm:
Takashi Moriyama