JP2016111133A5

JP2016111133A5 -

Info

Publication number: JP2016111133A5
Application number: JP2014245930A
Authority: JP
Filing date: 2014-12-04
Publication date: 2017-12-07
Anticipated expiration: 2034-12-04

Description

２次元の発光素子アレイから射出された光を集光することで高出力レーザーとして用いることが可能であり、特許文献１に開示されているようにレーザー点火プラグの光源として用いられる光源デバイスが知られている。
このような光源デバイスをレーザー点火プラグとして用いるためには、２次元の発光素子アレイからの光を効率良く且つ小スポット状に集光しなければならない。そのためには２次元の発光素子アレイからの放射光を一度コリメートしてから集光することが有効である。
この場合、発光素子ごとにコリメートしなければならないため、コリメートレンズは発光素子に近接した位置に設置しなければならない。このため、２次元のレンズアレイを２次元の発光素子アレイ上に設けることが最も有効である。 The light emitted from the two-dimensional light emitting element array it is possible to use as a high power laser by collecting light, a light source device that is used as a light source of les Za spark plugs as disclosed in Patent Document 1 Is known .
In order to use such a light source device as a laser spark plug, the light from the two-dimensional light emitting element array must be collected efficiently in a small spot shape. For this purpose, it is effective to collimate the radiated light from the two-dimensional light emitting element array once and then collect it.
In this case, since it is necessary to collimate each light emitting element, the collimating lens must be installed at a position close to the light emitting element. For this reason, it is most effective to provide a two-dimensional lens array on the two-dimensional light emitting element array.

Claims

A light emitting member including a light emitting element array in which a plurality of light emitting elements are arranged;
An optical member in which a plurality of optical elements comprises an optical element array in which are arranged to face the light emitting member which is arranged on an optical path of the plurality of light that will be emitted from the light emitting element,
Positioning portion that is provided between the light emitting member and the optical member and restricts movement in a direction parallel to the opposing surfaces of both members and movement in a direction approaching each other between the light emitting member and the optical member. When,
Have
The positioning part is a light source device located at a central part of the optical member.

The light source device according to claim 1.
The light source device in which the light emitting member and the optical member are joined at the positioning portion.

The light source device according to claim 1.
Between the peripheral part of the optical member and the light emitting member, a holding part for restricting movement in a direction in which the optical member and the light emitting member are separated from each other is provided.
The holding unit is a light source device formed of a material that is more easily deformed than the light emitting member and the optical member.

The light source device according to claim 3.
The holding unit is a light source device positioned outside a region of the light emitting element array and the optical element array.

The light source device according to claim 1.
The positioning part is a light source device having a convex part formed on one of the light emitting member and the optical member, and a concave part formed on the other and fitted to the convex part.

In the light source device as described in any one of Claims 1-5,
The positioning unit includes a light source device that exists between the central portion and the front Stories light emitting member of the optical member.

The light source device according to claim 1.
Support that regulates rotation between the light emitting member and the optical member in a direction parallel to the opposing surfaces of the two members and movement in a direction approaching each other between the peripheral portion of the optical member and the light emitting member. A light source device provided with a section.

The light source device according to claim 7.
The support part is a light source device located outside the region of the light emitting element array and the optical element array.

The light source device according to claim 7 or 8,
The said support part is a light source device which has the convex part formed in any one of the said light emitting member and the said optical member, and the recessed part which is formed in the other and fits into the said convex part.

The light source device according to any one of claims 1 to 9,
A condensing optical system for condensing the light emitted from the light source device onto an object;
An optical device comprising: