CN107329144A - A kind of miniature laser range finder module and range unit - Google Patents

Abstract

The embodiment of the invention discloses a miniature laser ranging module and a ranging device. In the embodiment of the present invention, the miniature laser ranging module includes a housing, the housing is in the shape of a cuboid, the top of the housing is provided with a semiconductor laser emitting module, and the front end of the housing is provided with a laser receiving module protruding from the housing. In the embodiment of the present invention, the micro-laser ranging module integrates the laser transmitting end and the receiving end, which is convenient to use and can be directly pasted to the designated position like a chip. Integration reduces process complexity.

Description

A miniature laser ranging module and ranging device

technical field

The invention relates to the field of laser technology, in particular to a miniature laser ranging module and a ranging device.

Background technique

In the existing laser ranging module, the laser transmitting and receiving modules are separated and not integrated, so the two modules are large in size. In the application of laser radar, mobile phone camera ranging and focusing, etc., it is necessary to use a small laser measuring device. If there is no ranging module for integrated processing, it is difficult to meet these miniature applications. At the same time, the transmitting end is separated from the receiving end, which takes up a lot of space, and it is difficult to match and adjust the transmitting end and the receiving end; A small part of the light will be blocked by the substrate, and the gold-plated design of the heat sink can easily cause a short circuit during use.

Contents of the invention

The embodiment of the present invention provides a miniature laser ranging module and a ranging device, which have solved the problem that the transmitting end of the miniature laser ranging module is separated from the receiving end, occupies a large space, and is difficult to match and adjust the transmitting end and the receiving end; The terminal separates the problem of complicated manufacturing process steps.

In a first aspect, the present invention provides a miniature laser ranging module, the miniature laser ranging module includes a housing, the housing is in the shape of a cuboid, a semiconductor laser emitting module is arranged on the top of the housing, and the front end of the housing is A laser receiving module protruding from the housing is provided.

Further, the laser receiving module includes an avalanche diode.

Further, the left side of the front end of the casing is set as the positive pole of the avalanche diode, and the right side of the front end of the casing is set as the negative pole of the avalanche diode.

Further, the middle of the rear end of the housing is a metal oxide body.

Further, the metal oxide host is an alumina host.

Further, the front end of the semiconductor laser emitting module protrudes by 100 μm to 500 μm.

Further, the front end of the semiconductor laser emitting module protrudes by 200 μm.

Further, an isolation area is provided between the front end of the housing, the cathode of the avalanche diode and the anode of the avalanche diode to avoid short circuit of the anode and cathode during welding.

Further, the avalanche diode adopts a gold-plated cathode design.

In a second aspect, the present invention provides a laser distance measuring device, which includes the miniature laser distance measuring module as described in any one of the first aspects.

It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the miniature laser ranging module includes a housing, and a semiconductor laser emitting module is arranged on the top of the housing. The housing is in the shape of a cuboid, and a protruding laser receiving module is provided at the front end of the housing. In the embodiment of the present invention, the micro-laser ranging module integrates the laser transmitting end and the receiving end, which is convenient to use and can be directly pasted to the designated position like a chip. Integration reduces process complexity.

Description of drawings

Fig. 1 is a schematic diagram of an embodiment of a miniature laser ranging module in an embodiment of the present invention;

Fig. 2 is the front view of the miniature laser ranging module in the embodiment of the present invention;

Fig. 3 is a bottom view of the miniature laser ranging module in the embodiment of the present invention.

detailed description

In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second" and the like (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

Please refer to Fig. 1, Fig. 2, Fig. 3, the present invention provides a kind of miniature laser ranging module, described miniature laser ranging module comprises housing 10, and described housing 10 is cuboid shape, and the top of described housing 10 is arranged A semiconductor laser emitting module 20 , a protruding laser receiving module 30 is provided at the front end of the housing 10 .

Further, the laser receiving module 30 includes an avalanche diode 60 , the avalanche diode anode 40 is arranged on the left side of the front end of the housing 10 , and the avalanche diode cathode 50 is arranged on the right side of the front end of the housing 10 .

Further, the middle of the rear end of the housing 10 is a metal oxide body 80, preferably, the metal oxide body 80 is an alumina body.

Further, the front end of the semiconductor laser emitting module protrudes by 100 μm to 500 μm, so that the emitted light is not blocked. Preferably, the front end of the semiconductor laser emitting module protrudes by 200 μm.

Further, an isolation area 70 is provided between the front end of the housing, the avalanche diode cathode 50 and the avalanche diode anode 40 to avoid short circuit between the positive and negative poles during welding.

Further, the avalanche diode adopts a gold-plated negative electrode design to avoid short-circuiting of the positive and negative electrodes during use.

In the embodiment of the present invention, the miniature laser ranging module includes a housing, a semiconductor laser emitting module is arranged on the top of the housing, and a protruding laser receiving module is provided at the front end of the housing, and the laser receiving module includes an avalanche diode. The left side of the housing is set as the positive pole of the avalanche diode, the left side of the housing is the negative pole of the avalanche diode, and the middle of the rear end of the housing is an alumina body. In the embodiment of the present invention, the micro-laser ranging module integrates the laser transmitting end and the receiving end, which is convenient to use and can be directly pasted to the designated position like a chip. Integration reduces process complexity.

An embodiment of the present invention also provides a laser distance measuring device, which includes the miniature laser distance measuring module as described in any one of the above embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed systems and devices may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A miniature laser ranging module, characterized in that, the miniature laser ranging module comprises a housing, the housing is in the shape of a cuboid, the top of the housing is provided with a semiconductor laser emitting module, and the front end of the housing is provided with There is a laser receiving module protruding from the housing. 2. The miniature laser ranging module according to claim 1, wherein the laser receiving module comprises an avalanche diode. 3. The miniature laser ranging module according to claim 2, wherein the left side of the front end of the housing is set as the positive pole of the avalanche diode, and the right side of the front end of the housing is set as the negative pole of the avalanche diode. 4. The miniature laser ranging module according to claim 1, wherein the middle of the rear end of the housing is a metal oxide body. 5. The miniature laser ranging module according to claim 1, wherein the metal oxide body is an alumina body. 6 . The miniature laser ranging module according to claim 1 , wherein the front end of the semiconductor laser emitting module protrudes by 100 μm to 500 μm. 7 . 7. The miniature laser ranging module according to claim 1, wherein the front end of the semiconductor laser emitting module protrudes by 200 μm. 8. The miniature laser ranging module according to claim 2, characterized in that, at the front end of the housing, an isolation area is set between the negative pole of the avalanche diode and the positive pole of the avalanche diode to avoid short circuit of the positive and negative poles during welding . 9. The miniature laser ranging module according to claim 2, wherein the avalanche diode adopts a negative gold-plated design. 10. A laser distance measuring device, characterized in that the device comprises the miniature laser distance measuring module according to any one of claims 1-9.