Laser package having multiple emitters configured on a support member
US-2016265729-A1 · Sep 15, 2016 · US
Laser module
US10003169B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10003169-B2 |
| Application number | US-201515511049-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 5, 2015 |
| Priority date | Oct 22, 2014 |
| Publication date | Jun 19, 2018 |
| Grant date | Jun 19, 2018 |
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- Title
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- Abstract
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Abstract
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A laser module according to the present disclosure includes a laser diode, a first collimating lens, and a beam twister. The laser diode includes a plurality of emitters and emits laser light from each of the plurality of emitters through a light emission surface. The first collimating lens is provided at a first distance from the light emission surface of the laser diode and parallelizes a fast-axis-wise divergence of the laser light. The beam twister is provided at a second distance away from the first collimating lens and turns the laser light approximately 90 degrees. Each of the plurality of emitters has a width of 5 μm to 120 μm on the light emission surface. The plurality of emitters have a pitch of 295 μm to 305 μm on the light emission surface.
First claim
Opening claim text (preview).
The invention claimed is: 1. A laser module, comprising: a laser diode that includes a plurality of emitters and emits laser light from each of the plurality of emitters through a light emission surface; a first collimating lens that is provided at a first distance away from the light emission surface of the laser diode and parallelizes a fast-axis-wise divergence of the laser light; a beam twister that is provided at a second distance away from the first collimating lens and turns the laser light approximately 90 degrees; and an L-shaped pedestal that (i) rigidly fixes the first collimating lens on an outside side-surface of the L-shaped pedestal and (ii) rigidly fixes the beam twister on an inside side-surface of the L-shaped pedestal and an inside bottom-surface of the L-shaped pedestal, wherein each of the plurality of emitters has a width of 5 μm to 120 μm on the light emission surface, the plurality of emitters have a pitch of 295 μm to 305 μm on the light emission surface, and a top surface of the beam twister is rigidly fixed to the inside bottom-surface of the L-shaped pedestal and a side surface of the beam twister is rigidly fixed to the inside side-surface of the L-shaped pedestal. 2. The laser module according to claim 1 , wherein the first distance is 30 μm to 70 μm. 3. The laser module according to claim 2 , wherein the first distance is 40 μm to 60 μm. 4. The laser module according to claim 1 , wherein the second distance is 0 μm to 60 μm. 5. The laser module according to claim 4 , wherein the second distance is 0 μm to 40 μm. 6. The laser module according to claim 1 , wherein each of the plurality of emitters has a length of 2 mm to 8 mm in a direction perpendicular to the light emission surface. 7. The laser module according to claim 6 , wherein each of the plurality of emitters has a length of 4 mm to 7 mm in the direction perpendicular to the light emission surface. 8. The laser module according to claim 1 , wherein each of the plurality of emitters has a width of 70 μm to 115 μm on the light emission surface. 9. The laser module according to claim 1 , wherein the plurality of emitters have a pitch of 298 μm to 302 μm on the light emission surface. 10. The laser module according to claim 1 , wherein a side surface of the first collimating lens is flush with the outside side-surface of the L-shaped pedestal.
Assignees
Inventors
Classifications
- H01S5/4031Primary
Edge-emitting structures · CPC title
in the form of a laser diode array, e.g. laser diode bar (semiconductor laser arrays with beam combining arrangement H01S5/4012) · CPC title
the semiconductor light source comprising an array of light emitters · CPC title
at least one surface having optical power · CPC title
Cylindrical lenses (cylindrical lenses per se G02B3/06) · CPC title
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- What does patent US10003169B2 cover?
- A laser module according to the present disclosure includes a laser diode, a first collimating lens, and a beam twister. The laser diode includes a plurality of emitters and emits laser light from each of the plurality of emitters through a light emission surface. The first collimating lens is provided at a first distance from the light emission surface of the laser diode and parallelizes a fas…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01S5/4031. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 19 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).