阅读说明：本技术 微小型的激光线型模块 (Miniature laser line module ) 是由 曾正宗 方铭辉 于 2019-09-02 设计创作，主要内容包括：一种微小型的激光线型模块,包含:一散热座,其上方形成一固定架,又其下方设有多个接脚；一激光二极管晶粒,装置于固定架上；一封盖,封住散热座,且封盖其内设有一容置槽及其上开设一出光窗,而出光窗位于容置槽的前方,及容置槽相通出光窗,且激光二极管晶粒的位置相对应容置槽及出光窗的位置；以及一柱镜,装设在容置槽内,并设定一第一表面及相反侧的第二表面,使第一表面以一第一微小距离面向激光二极管晶粒,及使第二表面以一第二微小距离面向出光窗；藉此,激光二极管晶粒激发一激光光源至柱镜,且激光光源呈椭圆锥状,而形成一光源角度,光源角度经由柱镜的第一表面至柱镜的第二表面后,而逐渐准直化,使激光光源可转换成一线型光源。(A microminiature laser line module comprises a heat dissipation seat, a plurality of pins, a plurality of first connecting pins and a plurality of second connecting pins, wherein a fixing frame is formed above the heat dissipation seat; a laser diode crystal grain, which is arranged on the fixed frame; a sealing cover, which seals the heat dissipation seat, and the sealing cover is provided with a containing groove therein and a light-emitting window thereon, wherein the light-emitting window is positioned in front of the containing groove, and the containing groove is communicated with the light-emitting window, and the position of the laser diode crystal grain corresponds to the positions of the containing groove and the light-emitting window; the cylindrical lens is arranged in the accommodating groove, and is provided with a first surface and a second surface on the opposite side, so that the first surface faces the laser diode crystal grains by a first micro distance, and the second surface faces the light outlet window by a second micro distance; therefore, the laser diode crystal grain excites a laser source to the cylindrical lens, the laser source is in an elliptic cone shape, a light source angle is formed, the light source angle is gradually collimated after passing through the first surface of the cylindrical lens to the second surface of the cylindrical lens, and the laser source can be converted into a linear light source.)

1. A microminiature laser line module, comprising:

a heat dissipation seat, a fixing frame is formed above the heat dissipation seat, and a plurality of pins are arranged below the heat dissipation seat;

a laser diode crystal grain arranged on the fixing frame;

a sealing cover, which seals the heat dissipation seat, and the sealing cover is provided with a containing groove therein and a light-emitting window thereon, the light-emitting window is positioned in front of the containing groove, the containing groove is communicated with the light-emitting window, and the position of the laser diode grain is corresponding to the positions of the containing groove and the light-emitting window; and

a cylindrical lens, installed in the containing groove, and setting a first surface and a second surface on the opposite side, so that the first surface faces the laser diode crystal grain by a first micro distance, and the second surface faces the light-emitting window by a second micro distance; therefore, the laser diode crystal grain excites a laser light source to the cylindrical lens, the laser light source is in an elliptical cone shape to form a light source angle, the light source angle is gradually collimated after passing through the first surface of the cylindrical lens to the second surface of the cylindrical lens, and the laser light source can be converted into a linear light source.

2. The microminiature laser line module of claim 1 wherein the R angle of the cylindrical mirror is in the range of 0.5mm to 1 mm.

3. The microminiature laser line module as claimed in claim 1, wherein the cylindrical lens is cylindrical or semi-cylindrical.

4. The microminiature laser line module as claimed in claim 1, wherein a plane is formed on one side of said cover, and said receiving groove extends to said plane to form a hole, and said hole is filled with a fixing glue, so that said cylindrical lens can be fixed.

Technical Field

The invention relates to a microminiature laser line module, which can miniaturize the volume of the laser line module.

Background

As shown in fig. 1A, taiwan patent I364148 is disclosed, which is a laser horizontal line adjusting mechanism 10, including: a hollow cylindrical body 11; a laser diode 12 installed inside the first end edge of the hollow cylinder 11; a focusing mirror 13 mounted inside the hollow cylinder 11 with respect to the laser diode 12 by a focusing mirror mount 131 and fixed by a focusing mirror clamping ring 132; an adjusting collar 14 coaxially connected to the second end edge of the hollow cylinder 11 by a fulcrum 141; a cylindrical mirror 15, which is installed on the adjusting collar 14 by a cylindrical mirror base 151, and the cylindrical mirror base 151 is fixed on the adjusting collar 14 in a sleeving manner, and the structure of the cylindrical mirror base 151 is protruded from a hollow sleeving section 1511 to form two cantilever sheets 1512, the two cantilever sheets 1512 form a cylindrical mirror installing hole 1513, the hollow sleeving section 1511 forms a clamping groove 1514 from the end edge to the cylindrical mirror installing hole 1513; and an outer sleeve 16 for inserting the hollow column 11 and the adjusting collar 14, and having a window 161 and a light outlet 162.

As shown in fig. 1B, after the focusing lens 13 is disposed inside the hollow cylinder 11, the cylindrical mirror 15 is disposed in the cylindrical mirror mounting hole 1513 of the two cantilever sheets 1512 of the cylindrical mirror base 151, the cylindrical mirror base 151 is fixed to the adjusting collar 14 by the hollow engaging section 1511, the axial direction of the cylindrical mirror 15 is perpendicular to the fulcrum 141 of the adjusting collar 14, the engaging groove 1514 is pressed while engaging, the cylindrical mirror 15 is further firmly clamped by the cylindrical mirror mounting hole 1513, and the laser diode 12 excites a laser source (L) as shown in fig. 1C₁₁) A light source angle (theta) larger than 120 DEG is formed after the focusing lens 13 reaches the cylindrical lens 15₁) The laser light source (L)₁₁) Can be converted into a linear light source (L)₁₂)。

However, the laser level adjusting mechanism 10 uses the laser light source (L)₁₁) Through the focusing mirror 13 to the cylindrical mirror 15, and the laser light source (L)₁₁) The optical path of (a) is a secondary optical path, and the light source angle (theta)₁) Must be greater than 120 DEG, so that the line light source (L)₁₂) The laser diode 12, the focusing mirror 13, the cylindrical mirror 15 and the light outlet 162 are fixed by a large number of partsThe assembly of the column results in a large volume. In view of the above-mentioned problems, the present inventors have devised a micro laser line module with a miniaturized size, which is an object of the present invention.

Disclosure of Invention

The present invention is directed to a micro laser line module, which reduces the number of focusing mirrors, simplifies the optical path of a laser light source into a single optical path, and can be assembled with fewer parts to solve the problems of the prior art, thereby achieving a compact size.

The technical means adopted by the invention comprises a heat dissipation seat, a plurality of pins and a plurality of fixing pins, wherein a fixing frame is formed above the heat dissipation seat; a laser diode crystal grain arranged on the fixing frame; a sealing cover, which seals the heat dissipation seat, and the sealing cover is provided with a containing groove therein and a light-emitting window thereon, the light-emitting window is positioned in front of the containing groove, the containing groove is communicated with the light-emitting window, and the position of the laser diode grain is corresponding to the positions of the containing groove and the light-emitting window; and a cylindrical lens, installed in the containing groove, and setting a first surface and a second surface on the opposite side, so that the first surface faces the laser diode crystal grain by a first micro distance, and the second surface faces the light-emitting window by a second micro distance; therefore, the laser diode crystal grain excites a laser light source to the cylindrical lens, the laser light source is in an elliptical cone shape to form a light source angle, the light source angle is gradually collimated after passing through the first surface of the cylindrical lens to the second surface of the cylindrical lens, and the laser light source can be converted into a linear light source.

According to the characteristics of the previous disclosure, the R angle of the cylindrical lens is 0.5 mm-1 mm.

According to the characteristics of the previous patent, the cylindrical lens is cylindrical or semi-cylindrical.

According to the front-lift feature, a plane is arranged on one side of the sealing cover, the accommodating groove extends to the plane to form a hole, and fixing glue is filled into the hole to enable the cylindrical lens to be fixed.

By means of the technical means disclosed, the relative distances among the laser diode crystal grains, the column lens and the light-emitting window are fixed and assembled by fewer parts, and the first micro distance and the second micro distance are matched, so that the micro laser linear module can be compressed to a very small height, and further has the effect of miniaturization.

Drawings

Fig. 1A is an exploded perspective view of a conventional laser horizontal line adjustment mechanism.

Fig. 1B is a perspective assembly view of a conventional laser horizontal line adjustment mechanism.

Fig. 1C is a schematic optical path diagram of a conventional laser horizontal line adjusting mechanism.

Fig. 2A is an exploded perspective view of the present invention.

Fig. 2B is a three-dimensional assembly view of the present invention without filling the fixing glue.

Fig. 2C is a perspective view of the fixing glue filled in the present invention.

Fig. 3A is an exploded perspective view of the interior of the present invention.

Fig. 3B is a perspective assembly view of the interior of the present invention.

Fig. 3C is a cross-sectional view of the interior of the present invention.

Fig. 4A is another perspective assembly view of the interior of the present invention.

Fig. 4B is another cross-sectional view of the interior of the present invention.

Fig. 5A is a perspective view of an optical path of the present invention.

FIG. 5B is a schematic diagram of an optical path according to the present invention.

Fig. 6 is a photographic view comparing the volume of the present invention with the volume of a conventional laser level adjustment mechanism.

Description of reference numerals: 20-microminiature laser line type module; 21-a heat sink; 211-a holder; 212-pin; 22-laser diode die; 23-sealing the cover; 231-a receiving groove; 232-light-out window; 233-plane; 234-hole; 24-a cylindrical lens; 241-a first surface; 242 — a second surface; 25-fixing glue; l is₂₁-a laser light source; l is₂₂-a linear light source; theta₂-a light source angle; an R-R angle; h-height; w-width.

Detailed Description

First, referring to fig. 2A to 6, a preferred embodiment of a micro laser line module 20 according to the present invention comprises: a heat sink 21, a fixing frame 211 is formed above the heat sink, and a plurality of pins 212 are formed below the heat sink.

A laser diode die 22 mounted on the fixing frame 211.

A sealing cover 23 for sealing the heat sink 21, wherein the sealing cover 23 has a receiving cavity 231 therein and a light-emitting window 232 formed thereon, the light-emitting window 232 is located in front of the receiving cavity 231, the receiving cavity 231 is communicated with the light-emitting window 232, and the position of the laser diode die 22 corresponds to the positions of the receiving cavity 231 and the light-emitting window 232.

A cylindrical lens 24 disposed in the accommodation groove 231 and defining a first surface 241 and a second surface 242 opposite to the first surface 241, such that the first surface 241 is spaced apart by a first small distance (D)₁) Facing the laser diode die 22 and having the second surface 242 at a second slight distance (D)₂) Facing the light exit window 232, the cylindrical lens 24 is cylindrical or semi-cylindrical in the present embodiment, but is not limited thereto.

As shown in fig. 2A, 2B and 2C, a plane 233 is disposed on one side of the cover 23, the receiving slot 231 extends to the plane 233 to form a hole 234, and the hole 234 is filled with a fixing glue 25 to fix the lens 24, and the relative distances of the laser diode die 22, the lens 24 and the light exit window 232 are disclosed in cooperation with those shown in fig. 3A, 3B and 3C and those shown in fig. 4A and 4B, so that the first minute distance (D) is utilized₁) At a second slight distance (D)₂) The micro laser line module 20 can be compressed to a height (H) of 4mm, but is not limited thereto.

Referring to fig. 5A and 5B, the laser diode die 22 excites a laser light source (L)₂₁) To the cylindrical lens 24 and the laser light source (L)₂₁) The optical path of (A) is primary optical, and the laser light source (L)₂₁) Is in the shape of an elliptical cone to form a light source angle (theta)₂) Angle of the light source (theta)₂) After passing through the first surface 241 of the cylindrical lens 24 to the second surface 242 of the cylindrical lens 24, the light beam is gradually collimated to make the laser light source (L)₂₁) RotatableConverted into a linear light source (L)₂₂) In this embodiment, the R angle (R) of the cylindrical lens 24 is 0.5mm to 1mm, so that the linear light source (L)₂₂) The width (W) can be reduced to 2mm, but the invention is not limited thereto.

Based on the above structure, as shown in fig. 6, a photograph comparing the volume of the micro laser line module 20 of the present invention with the volume of the conventional laser level adjusting mechanism 10 is as follows:

watch 1

Therefore, the micro laser linear module 20 of the present invention can be miniaturized in volume, not only can be compressed to a height (H) of 4mm, but also can be used as the linear light source (L)₂₂) Can be narrowed to a width (W) of 2mm, and improves the problems that the conventional laser horizontal line adjusting mechanism 10 is too bulky to be compressed to an extremely small height and cannot narrow the width of a linear light source.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.