CN112859484A - Infrared laser element of structured light imaging device and structured light imaging device - Google Patents

Infrared laser element of structured light imaging device and structured light imaging device Download PDF

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Publication number
CN112859484A
CN112859484A CN202110149651.7A CN202110149651A CN112859484A CN 112859484 A CN112859484 A CN 112859484A CN 202110149651 A CN202110149651 A CN 202110149651A CN 112859484 A CN112859484 A CN 112859484A
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lens
convex lens
concave
concave lens
emitting unit
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CN202110149651.7A
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Chinese (zh)
Inventor
崔尧
沈志强
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Shenzhen Bosheng Photoelectric Technology Co ltd
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Shenzhen Bosheng Photoelectric Technology Co ltd
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
    • G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/254—Image signal generators using stereoscopic image cameras in combination with electromagnetic radiation sources for illuminating objects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/271—Image signal generators wherein the generated image signals comprise depth maps or disparity maps

Abstract

The application relates to the technical field of 3D detection, and discloses a structured light imaging device's infrared laser element and structured light imaging device, structured light imaging device's infrared laser element includes: the light-emitting unit is used for projecting infrared rays to the measured object; a scattering element; the light emitting unit is arranged on the light path of the light emitting unit; the light-emitting unit, the scattering element and the magnifying lens are sequentially arranged at intervals, and the infrared ray field angle is enlarged by a preset magnification. According to the scheme, the field angle of the light beam emitted by the light-emitting unit is enlarged through the magnifying lens, so that the depth information of the detection area is enlarged; the specific range is detected by the preset amplification factor, so that the power consumption of the equipment is reduced, and the cruising ability of the equipment is improved.

Description

Infrared laser element of structured light imaging device and structured light imaging device
Technical Field
The invention relates to the technical field of 3D detection, in particular to an infrared laser element of a structured light imaging device and the structured light imaging device.
Background
Conventional 2D imaging devices, such as cameras, can only acquire planar information of an object; the 3D imaging device can also acquire depth information of an object and construct a three-dimensional 3D model, so that the 3D imaging device is widely applied to the fields of industrial measurement, part modeling, medical diagnosis, security monitoring, machine vision, biological recognition, augmented reality AR, virtual reality VR and the like, and has great application value.
In the related art, the laser emitted from the light source of the emission module of the structured light forming apparatus is projected to the target object at a specific distance, and the detection range is small.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide an infrared laser element and a structured light forming apparatus.
The invention provides an infrared laser element of a structured light imaging device, which is characterized by comprising:
the light-emitting unit is used for projecting infrared rays to the measured object;
a scattering element; the light emitting unit is arranged on the light path of the light emitting unit;
the light-emitting unit, the scattering element and the magnifying lens are sequentially arranged at intervals, and the infrared ray field angle is enlarged by a preset magnification.
As an optimal mode for realization, the zoom lens further comprises an expansion piece, wherein the expansion piece is positioned between the scattering element and the magnifying lens, and the movable end of the expansion piece is connected to the magnifying lens so as to adjust the preset magnification.
As an optimal way to realize, the magnifying lens comprises a first concave lens and a second concave lens, the light emitting unit, the scattering element, the first concave lens and the second concave lens are sequentially arranged at intervals, the orthographic projection of the first concave lens on the second concave lens completely falls on and partially covers the second concave lens,
the distance between the first concave lens and the second concave lens is smaller than the absolute value of the sum of the focal length of the first concave lens and the focal length of the second concave lens.
As an optimal way to realize, the magnifying lens comprises a first convex lens and a second convex lens, the light emitting unit, the scattering element, the first convex lens and the second convex lens are sequentially arranged at intervals, the orthographic projection of the first convex lens on the second convex lens completely falls on and partially covers the second convex lens,
the distance between the first convex lens and the second convex lens is larger than the sum of the focal length of the first convex lens and the focal length of the second convex lens.
As an optimal way to realize, the magnifying lens comprises a third convex lens and a third concave lens, the light emitting unit, the scattering element, the third convex lens and the third concave lens are sequentially arranged at intervals, the orthographic projection of the third convex lens on the third concave lens completely falls on and partially covers the third concave lens,
and the focal length absolute value of the third concave lens is summed with the distance between the third convex lens and the third concave lens, and the sum is smaller than the focal length of the third convex lens.
As an optimal way to realize, the magnifying lens includes a third concave lens and a third convex lens, the light emitting unit, the scattering element, the third concave lens and the third convex lens are sequentially disposed at intervals, an orthographic projection of the third concave lens on the third convex lens completely falls on and partially covers the third convex lens,
and the difference is made between the focal length of the third convex lens and the distance between the third concave lens and the third convex lens, and the difference is greater than the absolute value of the focal length of the third concave lens.
As the best mode to be realized, the light emitting unit includes a plurality of vertical cavity surface emitting lasers arranged in a matrix arrangement.
As an optimal way to realize, the magnifying lens adopts a fresnel lens array, in which a plurality of first microlens units and a plurality of vertical cavity surface emitting lasers are arranged in a one-to-one correspondence manner, or,
the magnifying lens adopts a micro-lens array, a plurality of second micro-lens units in the micro-lens array are arranged in one-to-one correspondence with a plurality of vertical cavity surface emitting lasers, or,
the magnifying lens adopts a holographic lens array, and a plurality of third micro-lens units in the holographic lens array are arranged in one-to-one correspondence with the vertical cavity surface emitting lasers.
The invention also provides a structured light imaging device comprising the infrared laser element of any one of the above.
Compared with the prior art, the invention has the beneficial effects that:
according to the scheme, the field angle of infrared light emitted by the light-emitting unit is enlarged through the magnifying lens, so that the depth information of a detection area is enlarged; the specific range is detected by the preset magnification, so that the power consumption of the equipment is reduced, and the cruising ability of the equipment is improved; the magnifying lens combining the first concave lens and the second concave lens is adopted to realize preset magnification, and the magnifying lens is small in size and convenient to carry; the magnifying lens with the combination of the third concave lens and the third convex lens is adopted to realize preset magnification, and the magnifying lens is small in size and convenient to carry.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a structure of a structured light imaging apparatus according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a first infrared laser element of a structured light imaging apparatus according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a second infrared laser element of a structured light imaging apparatus according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a third type of infrared laser element of a structured light imaging apparatus according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a fourth type of infrared laser element of a structured light imaging apparatus, according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a fifth infrared laser element of a structured light imaging apparatus according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 shows a schematic structural diagram of a structured light imaging apparatus.
A structured light imaging device comprises an infrared laser element 100 and an infrared camera element 200, wherein the infrared laser element 100 and the infrared camera element 200 are arranged at intervals and on the same reference plane. The infrared laser element 100 is configured to emit a plurality of infrared rays toward the observation object, each of the infrared rays forming a light spot on the observation object, each of the light spots having a unique position. The infrared imaging device 200 is used to collect the size and shape of the light spot on the object to be observed.
The working principle of the structured light imaging device is as follows: several infrared rays are emitted onto the observed object by the infrared laser element 100. The infrared imaging device 200 collects the infrared light to form a spot size and shape on the object to be observed. The control system of the structured light imaging device accesses the relationship between the size and the shape of the light spot and the distance of the observed object in advance, and then obtains the distance of the observed object according to the size and the shape of the light spot through the control system of the structured light imaging device, so as to obtain the three-dimensional structure of the observed object.
The infrared laser element 100 includes: a light emitting unit 11, a scattering element 12, and an enlargement lens 13. The scattering element 12 and the magnifying lens 13 are disposed on the optical path of the light-emitting unit 11, and the light-emitting unit 11, the scattering element 12 and the magnifying lens 13 are sequentially disposed at intervals, so as to enlarge the field angle of the infrared light projected by the light-emitting unit 11 with a predetermined magnification. The light emitting unit 11 projects infrared light to the scattering element 12, and the light passing through the scattering element 12 is uniformly distributed toward the magnifying lens 13. The magnifying lens 13 may be one concave lens, two concave lenses, or a combination of a concave lens and a convex lens. The magnifying lens 13 diverges the light beam to increase the field angle of the infrared light.
The infrared laser element 100 provided by the present application enlarges the field angle of the infrared light emitted from the light emitting unit 11 through the magnifying lens 13 to project infrared optics to a wider range, thereby acquiring distance information of a wider range; the specific range is detected by the preset amplification factor, so that the power consumption of the equipment is reduced, and the cruising ability of the equipment is improved.
In a preferred embodiment, the infrared laser device 100 further includes a telescopic member, the telescopic member is located between the scattering element 12 and the magnifying lens 13, and a movable end of the telescopic member is connected to the magnifying lens 13 to adjust the preset magnification.
Referring to fig. 2, in the present embodiment, an infrared laser element 100 includes: light-emitting unit 11, scattering element 12, magnifying lens 13 and telescopic part, magnifying lens 13 is a concave lens. The light emitting unit 11, the scattering element 12 and the magnifying lens 13 are sequentially arranged at intervals, and the telescopic piece is located between the scattering element 12 and the magnifying lens 13. The telescopic member may be an electric push rod, a movable end of the electric push rod is connected to the magnifying lens 13, and a fixed end of the electric push rod is connected to the scattering element 12.
The distance between the scattering element 12 and the magnifying lens 13 is d, the focal length of the magnifying lens 13 is f, the preset magnification is m,
Figure BDA0002932257430000051
the distance d between the scattering element 12 and the magnifying lens 13 is adjusted through the stretching of the telescopic piece so as to change the preset magnification ratio m, the specific range is detected, the power consumption of the equipment is favorably reduced, and the cruising ability of the equipment is improved.
In a preferred embodiment, the magnifying lens includes a first concave lens and a second concave lens, the light emitting unit, the scattering element, the first concave lens and the second concave lens are sequentially disposed at intervals, an orthographic projection of the first concave lens on the second concave lens completely falls on and partially covers the second concave lens,
the distance between the first concave lens and the second concave lens is smaller than the absolute value of the sum of the focal length of the first concave lens and the focal length of the second concave lens.
Referring to fig. 3, in the present embodiment, an infrared laser element 100 includes: a light emitting unit 11, a scattering element 12, and an enlargement lens 13. The magnifying lens 13 is a first concave lens 131 and a second concave lens 132. The light emitting unit 11, the scattering element 12, the first concave lens 131 and the second concave lens 132 are sequentially arranged at intervals, the optical center of the first concave lens 131 and the optical center of the second concave lens 132 are located on the same straight line, and the orthographic projection part of the second concave lens 132 covers the second concave lens 132.
The distance between the scattering element 12 and the first concave lens 131 is d1The distance between the first concave lens 131 and the second concave lens 132 is s1，s1Is a constant value. The first concave lens 131 has a focal length f11The focal length of the second concave lens 132 is f12Wherein, in the step (A),
|f11+f12|>s1。
the infrared light passing through the scattering element 12 is incident to the first concave lens 131 at a first angle, and the first concave lens 131 expands the field angle of the infrared light at a first preset magnification. The infrared light is incident to the second concave lens 132 again at the second angle, and the second concave lens 132 further expands the field angle of the infrared light at the second preset magnification.
By adjusting the spacing d between the scattering element 12 and the first concave lens 1311And further the preset magnification m is changed. The magnifying lens 13 using the combination of the first concave lens 131 and the second concave lens 132 realizes a predetermined magnification, and the magnifying lens 13 is small in size and convenient to carry.
In a preferred embodiment, the magnifying lens includes a first convex lens and a second convex lens, the light emitting unit, the scattering element, the first convex lens and the second convex lens are sequentially disposed at intervals, the orthographic projection of the first convex lens on the second convex lens completely falls on and partially covers the second convex lens,
the distance between the first convex lens and the second convex lens is larger than the sum of the focal length of the first convex lens and the focal length of the second convex lens.
Referring to fig. 4, in the present embodiment, an infrared laser element 100 includes: light-emitting unit 11, scattering element 12 and magnifying lens 13, wherein magnifying lens 13 is a first convex lens 131 and a second convex lens 132. The light emitting unit 11, the scattering element 12, the first convex lens 131 and the second convex lens 132 are sequentially arranged at intervals, the optical center of the first convex lens 131 and the optical center of the second convex lens 132 are positioned on the same straight line, and the orthographic projection part of the first convex lens 131 covers the second convex lens 132.
The distance between the scattering element 12 and the first convex lens 131 is d2The distance between the first convex lens 131 and the second convex lens 132 is s2, s2Is a constant value. The first convex lens 131 has a focal length f21The focal length of the second convex lens 132 is f22Wherein, in the step (A),
|f21+f22|<s2。
the infrared light passing through the scattering element 12 is incident on the first convex lens 131, the light converged by the first convex lens 131 is incident on the second concave lens 132, the second concave lens 132 enlarges the field angle of the infrared light with a predetermined magnification, and the infrared light is emitted to the observation object in a parallel manner.
By adjusting the distance d between the scattering element 12 and the first convex lens 1312And further the preset magnification m is changed. The magnifying lens 13 using the combination of the first convex lens 131 and the second convex lens 132 realizes a predetermined magnification, and the magnifying lens 13 has a simple structure and a low manufacturing cost.
In a preferred embodiment, the magnifying lens includes a third convex lens and a third concave lens, the light emitting unit, the scattering element, the third convex lens and the third concave lens are sequentially disposed at intervals, an orthographic projection of the third convex lens on the third concave lens completely falls on and partially covers the third concave lens,
and the focal length absolute value of the third concave lens is summed with the distance between the third convex lens and the third concave lens, and the sum is smaller than the focal length of the third convex lens.
Referring to fig. 5, in the present embodiment, an infrared laser element 100 includes: light-emitting unit 11, scattering element 12 and magnifying lens 13, wherein magnifying lens 13 is a third convex lens 131 and a third concave lens 132. The light emitting unit 11, the scattering element 12, the third convex lens 131 and the third concave lens 132 are sequentially arranged at intervals, the optical center of the third convex lens 131 and the optical center of the third concave lens 132 are positioned on the same straight line, and the orthographic projection part of the third convex lens 131 covers the third concave lens 132.
The distance between the scattering element 12 and the third convex lens 131 is d3The distance between the third convex lens 131 and the third concave lens 132 is s3，s3Is a constant value. The third convex lens 131 has a focal length f23The focal length of the third concave lens 132 is f13Wherein, in the step (A),
|f13|+s3＜f23。
by adjusting the distance d between the scattering element 12 and the third convex lens 1313And further the preset magnification m is changed.
In a preferred embodiment, the magnifying lens includes a third concave lens and a third convex lens, the light emitting unit, the scattering element, the third concave lens and the third convex lens are sequentially disposed at intervals, an orthographic projection of the third concave lens on the third convex lens completely falls on and partially covers the third convex lens,
and the difference is made between the focal length of the third convex lens and the distance between the third concave lens and the third convex lens, and the difference is greater than the absolute value of the focal length of the third concave lens.
Referring to fig. 6, in the present embodiment, an infrared laser element 100 includes: light-emitting unit 11, scattering element 12 and magnifying lens 13, and magnifying lens 13 is a third concave lens 132 and a third convex lens 131. The light emitting unit 11, the scattering element 12, the third concave lens 132 and the third convex lens 131 are sequentially arranged at intervals, the optical center of the third concave lens 132 and the optical center of the third convex lens 131 are positioned on the same straight line, and the orthographic projection part of the third concave lens 132 covers the third convex lens 131.
The distance between the scattering element 12 and the third concave lens 132 is d4The distance between the third concave lens 132 and the third convex lens 131 is s4，s4Is a constant value. The third concave lens 132 has a focal length f13The third convex lens 131 has a focal length f23Wherein, in the step (A),
f23-s4＞|f13|。
by adjusting the spacing d between the scattering element 12 and the third concave lens 1324And further the preset magnification m is changed. The magnifying lens 13 with the combination of the third concave lens 132 and the third convex lens 131 is adopted to realize preset magnification, and the magnifying lens 13 is small in size and convenient to carry.
It should be noted that the first concave lens, the second concave lens and the third concave lens are all biconcave lenses, and the focal lengths of the two sides of the biconcave lenses are the same, so that the installation requirement is reduced, and the installation efficiency is improved; the first convex lens, the second convex lens and the third convex lens are all double-convex lenses, and the focal lengths of the two sides of the double-convex lenses are the same, so that the mounting requirement is reduced, and the mounting efficiency is improved.
In a preferred embodiment, the light emitting unit includes a plurality of vertical cavity surface emitting lasers arranged in a matrix arrangement.
In the present embodiment, the light emitting unit 11 is a vertical cavity surface emitting laser, and a plurality of vertical cavity surface emitting lasers are arranged in a matrix. A Vertical-cavity surface-Emitting Laser (VCSEL) is a semiconductor, and Laser light is emitted perpendicularly to a top surface. The VCSEL has the advantages of small volume, small divergence angle, energy concentration and the like.
Further, the magnifying lens 13 adopts a fresnel lens array, and a plurality of first microlens units in the fresnel lens array and a plurality of vertical cavity surface emitting lasers are arranged in a one-to-one correspondence manner, which is beneficial to reducing light interference among a plurality of VCSELs.
Or, the magnifying lens 13 adopts a microlens array, and a plurality of second microlens units in the microlens array are arranged in one-to-one correspondence with a plurality of vertical cavity surface emitting lasers, which is beneficial to reducing light interference among a plurality of VCSELs.
Or, the magnifying lens 13 adopts a holographic lens array, and a plurality of third microlens units in the holographic lens array are arranged in one-to-one correspondence with a plurality of vertical cavity surface emitting lasers, which is beneficial to reducing light interference among a plurality of VCSELs.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (9)

1. An infrared laser element of a structured light imaging apparatus, comprising:
the light-emitting unit is used for projecting infrared rays to the measured object;
a scattering element; the light emitting unit is arranged on the light path of the light emitting unit;
the light-emitting unit, the scattering element and the magnifying lens are sequentially arranged at intervals, and the infrared ray field angle is enlarged by a preset magnification.
2. The infrared laser element as set forth in claim 1, further comprising an expansion member, the expansion member being located between the scattering element and the magnifying lens, a movable end of the expansion member being connected to the magnifying lens to adjust the preset magnification.
3. The infrared laser element as set forth in claim 1, wherein said magnifying lens includes a first concave lens and a second concave lens, said light emitting unit, said scattering element, said first concave lens and said second concave lens are disposed in order at a distance, an orthographic projection of said first concave lens on said second concave lens completely falls on and partially covers said second concave lens,
the distance between the first concave lens and the second concave lens is smaller than the absolute value of the sum of the focal length of the first concave lens and the focal length of the second concave lens.
4. The infrared laser device as claimed in claim 1, wherein the magnifying lens includes a first convex lens and a second convex lens, the light emitting unit, the scattering element, the first convex lens and the second convex lens are sequentially disposed at intervals, the orthographic projection of the first convex lens on the second convex lens completely falls on and partially covers the second convex lens,
the distance between the first convex lens and the second convex lens is larger than the sum of the focal length of the first convex lens and the focal length of the second convex lens.
5. The infrared laser element as set forth in claim 1, wherein the magnifying lens includes a third convex lens and a third concave lens, the light-emitting unit, the scattering element, the third convex lens and the third concave lens are sequentially disposed at intervals, an orthographic projection of the third convex lens on the third concave lens completely falls on and partially covers the third concave lens,
and the focal length absolute value of the third concave lens is summed with the distance between the third convex lens and the third concave lens, and the sum is smaller than the focal length of the third convex lens.
6. The infrared laser device as claimed in claim 1, wherein the magnifying lens includes a third concave lens and a third convex lens, the light emitting unit, the scattering element, the third concave lens and the third convex lens are sequentially disposed at intervals, an orthogonal projection of the third concave lens on the third convex lens completely falls on and partially covers the third convex lens,
and the difference is made between the focal length of the third convex lens and the distance between the third concave lens and the third convex lens, and the difference is greater than the absolute value of the focal length of the third concave lens.
7. The infrared laser element according to claim 1, wherein the light emitting unit comprises a plurality of vertical cavity surface emitting lasers arranged in a matrix arrangement.
8. The infrared laser element as set forth in claim 7, wherein the magnifying lens is a Fresnel lens array in which a plurality of first micro lens units are disposed in one-to-one correspondence with a plurality of the vertical cavity surface emitting lasers, or,
the magnifying lens adopts a micro-lens array, a plurality of second micro-lens units in the micro-lens array are arranged in one-to-one correspondence with a plurality of vertical cavity surface emitting lasers, or,
the magnifying lens adopts a holographic lens array, and a plurality of third micro-lens units in the holographic lens array are arranged in one-to-one correspondence with the vertical cavity surface emitting lasers.
9. A structured light imaging apparatus comprising the infrared laser element according to any one of claims 1 to 8.
CN202110149651.7A 2021-02-03 2021-02-03 Infrared laser element of structured light imaging device and structured light imaging device Pending CN112859484A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115575395A (en) * 2022-12-07 2023-01-06 深圳赛陆医疗科技有限公司 Optical monitoring system based on gene sequencing, monitoring method thereof and sequencing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115575395A (en) * 2022-12-07 2023-01-06 深圳赛陆医疗科技有限公司 Optical monitoring system based on gene sequencing, monitoring method thereof and sequencing system

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