JP2016174189A5

JP2016174189A5 -

Info

Publication number: JP2016174189A5
Application number: JP2016133707A
Authority: JP
Filing date: 2016-07-05
Publication date: 2017-08-10
Anticipated expiration: 2034-07-02

Description

図１は、本発明の第１実施形態に係る三色光光源を示す斜視図である。FIG. 1 is a perspective view showing a three-color light source according to the first embodiment of the present invention. 図２は、図１に示された三色光光源のキャップを取り外した状態を示す斜視図である。FIG. 2 is a perspective view showing a state in which the cap of the three-color light source shown in FIG. 1 is removed. 図３は、レーザ光の波長と受光感度との関係を示すグラフである。 FIG. 3 is a graph showing the relationship between the wavelength of the laser beam and the light receiving sensitivity . 図４（ａ）はキャリア及び中間アセンブリを示す斜視図であり、図４（ｂ）FIG. 4A is a perspective view showing the carrier and the intermediate assembly, and FIG. はＴＥＣ及びベース部材を示す斜視図である。FIG. 3 is a perspective view showing a TEC and a base member. 図５は、ＴＥＣ上にキャリアを搭載した状態を示す斜視図である。FIG. 5 is a perspective view showing a state where the carrier is mounted on the TEC. 図６は、ベース部材上の各部品と各リードピンとのワイヤリングが行われたIn FIG. 6, each component on the base member and each lead pin are wired. 状態を示す斜視図である。It is a perspective view which shows a state. 図７は、図６のキャリア上にコリメートレンズを搭載した状態を示す斜視図7 is a perspective view showing a state in which a collimating lens is mounted on the carrier of FIG. である。It is. 図８は、図６のキャリア上に波長フィルタを搭載した状態を示す斜視図である。FIG. 8 is a perspective view showing a state in which a wavelength filter is mounted on the carrier of FIG. 図９は、各色のビームパターンを示す図表である。FIG. 9 is a chart showing the beam pattern of each color . 図１０は、本発明の第２実施形態に係る三色光光源を示す斜視図である。FIG. 10 is a perspective view showing a three-color light source according to the second embodiment of the present invention. 図１１は、図１０に示された三色光光源のキャップを取り外した状態を示す斜視図である。FIG. 11 is a perspective view showing a state in which the cap of the three-color light source shown in FIG. 10 is removed.

Claims

A three-color light source that combines and outputs red, green, and blue laser beams,
A first laser diode chip that emits a first laser beam;
A second laser diode chip that emits a second laser beam having a wavelength different from that of the first laser beam;
A third laser diode chip for emitting a third laser beam having a wavelength different from that of the second laser beam;
A first collimating lens that is focused on the light emitting end face of the first laser diode chip and that collimates the first laser light;
A second collimating lens that is focused on the light emitting end face of the second laser diode chip and collimates the second laser light;
A third collimating lens that is focused on the light emitting end face of the third laser diode chip and that collimates the third laser light;
The first laser light collimated by the first collimating lens is transmitted, the second laser light collimated by the second collimating lens is reflected, and the first laser light and the first laser light are reflected. A first wavelength filter that outputs a first combined light obtained by combining two laser beams so that optical axes of the first and second laser beams substantially coincide with each other ;
One of transmission and reflection is performed on the first combined light, and the other of transmission and reflection is performed on the third laser light collimated by the third collimating lens. A second wavelength filter that outputs a second combined light obtained by combining the first combined light and the third laser light so that optical axes of the first combined light and the third laser light substantially coincide with each other. When,
A carrier on which the first to third laser diode chips , the first to third collimating lenses, and the first and second wavelength filters are mounted;
A temperature control element on which the carrier is mounted;
With
The first and second wavelength filters are independent parts so that the optical axes can be adjusted individually,
The carrier is formed with a step so that the first to third laser diode chips are mounted at a position higher than the first to third collimating lenses and the first and second wavelength filters. And
The carrier is directly fixed to a surface higher than the surface on which the first to third collimating lenses and the first and second wavelength filters are mounted, and each is a single first to third submount. In addition, the first to third laser diode chips are directly fixed,
The second combined light is collimated only by the first to third collimating lenses without using other lenses .
Three-color light source.

The first laser beam is red, one of the second or third laser beam is green, and the other of the second or third laser beam is blue;
The three-color light source according to claim 1.

A mirror that reflects part of the second combined light and transmits the remaining part;
A photodiode for detecting the intensity of the second combined light transmitted through the mirror;
The three-color light source according to claim 1 or 2.

The second combined light is reflected by the mirror in a direction intersecting the main surface of the carrier.
The three-color light source according to claim 3.

The mirror has a slope that is inclined with respect to the direction in which the optical axis of the second combined light extends, and a bottom surface.
The bottom surface is fixed to the carrier;
The photodiode detects the intensity of the second combined light refracted at the inclined surface of the mirror;
The three-color light source according to claim 3 or 4.

The second and third laser diode chips are arranged such that the emission directions of the second and third laser beams from the second and third laser diode chips are the first and second laser diode chips from the first laser diode chip. Arranged so as to be substantially perpendicular to the laser beam emission direction,
The three-color light source according to any one of claims 1 to 5 .

A base member having a main surface;
A cap covering the main surface of the base member;
Further comprising
In the space defined by the base member and the cap, the first to third laser diode chips, the first to third collimating lenses, the first and second wavelength filters, the carrier, and The temperature control element is accommodated ,
The temperature control element is provided on the main surface of the base member,
The carrier is provided on a surface opposite to the base member in the temperature control element,
The three-color light source according to any one of claims 1 to 6 .

The first laser diode chip is made of a GaAs material,
The second and third laser diode chips are made of a GaN-based material,
The three-color light source according to any one of claims 1 to 7.

The first and second wavelength filters are directly fixed to the flat sub-base member on the carrier by an ultraviolet curable resin,
The three-color light source according to any one of claims 1 to 8 .

The height of the optical axis of the first to third laser diode chips and the height of the optical axes of the first to third collimating lenses and the first and second wavelength filters are the same.
The three-color light source according to any one of claims 1 to 9.