US 2017/0285354 A1Published application

Laser light source device and video display device

AssigneeMitsubishi Electric Corporation

InventorTakumi KIJIMA

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Abstract

It is an object to provide a small and inexpensive laser light source device capable of efficiently focusing rays of laser light from a plurality of laser light sources so as to increase output, and to provide an inexpensive and small video display device. The plurality of laser light source units are arranged in such manner that the plurality of laser light source units adjacent to each other adjoin each other in series. The laser light source device further includes a second reflection mirror reflecting, in a third direction, a ray of laser light reflected in a second direction. The second reflection mirror is held by a mirror holder belonging to one laser light source unit among the plurality of laser light source units.

Claims4

Dependent claims

A laser light source device comprising a plurality of laser light source units,

said plurality of laser light source units each including
a laser light source emitting a ray of laser light having an elliptic cross section in a first direction,
a first reflection mirror disposed on an optical axis of said ray of laser light and reflecting said ray of laser light in a second direction, and
a mirror holder holding said first reflection mirror,
said plurality of laser light source units being arranged in such a manner that said plurality of laser light source units adjacent to each other adjoin each other in series,
said laser light source device further comprising a second reflection mirror reflecting, in a third direction, said ray of laser light reflected in said second direction,
said second reflection mirror being held by said mirror holder belonging to one laser light source unit among said plurality of laser light source units.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/516,869Filed 19 Jan 2016
Priority: JP 2015-01092623 Jan 2015
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

G02B 27/14
Beam splitting or combining systems: operating by reflection only
G02B 27/0977
Using specific optical elements: reflective elements
G02B 27/18
Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00: for optical projection, e.g. combination of…
G03B 21/145
Details: housing details, e.g. position adjustments thereof

Family

US 10,082,673 B2Related patent
US 2017/0285354 A1This patent

From the US filing history. Foreign family members aren’t listed.

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