Visible light-laser integrated transmitting system

Abstract

The invention discloses a visible light-laser integrated emission system. Comprising a laser emission unit, a visible light emission unit, a collimation optical unit and a laser reflector. The laser emitting unit is used for emitting a laser beam with a preset divergence angle to the laser reflecting mirror; the visible light emitting unit is used for emitting visible light to the collimating optical unit; the laser reflecting mirror is used for introducing the laser beam into the collimating mirror optical unit; the collimating optical unit comprises an integrator and a first collimating mirror which are sequentially arranged along the propagation direction of light; the integrator is used for adjusting incident visible light or laser into uniform light beams, and the first collimating mirror is used for reflecting the uniform light beams to a measured object. According to the invention, the efficiency of optical measurement can be improved.

Description

Technical Field

[0001] The present invention relates to the field of optical measurement technology, and in particular to a visible light-laser integrated emission system. Background Art

[0002] Optical measurement is a non-contact measurement technology that uses some basic properties of light, such as reflection, interference, scattering, etc. to perform relevant precise measurements. The main principle is to use the physical properties of light to detect the object being measured. Different measurement methods use different properties. At present, optical measurement is widely used in various fields such as industry, medicine, environmental science, physics, agriculture and military, and has achieved many major results.

[0003] When measuring objects in the laboratory, related technologies are usually divided into visible light testing and laser testing. Since the testing principles of the two light sources are different, when different light sources are used for testing, the emission system needs to be replaced, which affects the test efficiency.

[0004] Therefore, there is an urgent need for a visible light-laser integrated emission system to solve the above problems. Summary of the invention

[0005] The present invention provides a visible light-laser integrated emission system, which can improve the efficiency of optical measurement. The technical solution is as follows:

[0006] The present invention provides a visible light-laser integrated emission system, comprising: a laser emission unit, a visible light emission unit, a collimating optical unit and a laser reflector;

[0007] The laser emitting unit is used to emit a laser beam with a preset divergence angle toward the laser reflecting mirror;

[0008] The visible light emitting unit is used to emit visible light to the collimating optical unit;

[0009] The laser reflector is used to introduce the laser beam into the collimator optical unit;

[0010] The collimating optical unit comprises an integrator and a first collimating mirror which are sequentially arranged along the propagation direction of light; the integrator is used to adjust the incident visible light or laser into a uniform light beam, and the first collimating mirror is used to reflect the uniform light beam onto the object to be measured.

[0011] In a possible design, it further comprises at least one light path reflector (31); the light path reflector (31) is arranged at the front end of the integrator (32);

[0012] The light path reflector (31) is used to reflect the visible light emitted by the visible light emitting unit (2) or the laser reflected by the laser reflector (4) to the integrator (32).

[0013] In a possible design, the preset divergence angle is no greater than 13°.

[0014] In one possible design, the laser emission unit includes at least one laser and a beam shaping and expanding optical module;

[0015] Each of the lasers is used to emit laser light of different powers, and the shaping and beam expanding optical module is used to adjust the laser light emitted by each of the lasers to a laser beam with the preset divergence angle.

[0016] In a possible design, when the number of the laser is one, the beam shaping and expanding optical module includes a second collimator, a fiber coupling lens, a fiber jumper, and a relay lens sequentially arranged along the laser propagation direction;

[0017] The second collimator is used to collimate the elliptical spot output by the laser into a circular spot with parallel emission; the fiber coupling mirror is used to couple the incident parallel light beam; the fiber jumper is used to homogenize the incident laser; the relay mirror is used to adjust the divergence angle of the emitted laser so that the emitted laser beam meets the preset divergence angle.

[0018] In a possible design, when the number of the lasers is two, the beam shaping and expanding optical module further includes a dichroic beam combining mirror, a third collimating mirror and a total reflecting mirror, and the dichroic beam combining mirror is arranged between the second collimating mirror and the fiber coupling mirror;

[0019] The third collimator is used to collimate the elliptical light spot output by another laser into a parallel circular light spot, and the circular light spot is incident on the total reflection mirror; the total reflection mirror is used to reflect all the incident laser light onto the dichroic beam combiner; the dichroic beam combiner is used to reflect the laser light incident from the total reflection mirror onto the fiber coupling mirror, and transmit the laser light incident from the second collimator to the fiber coupling mirror.

[0020] In a possible design, the core diameter of the optical fiber jumper is 0.6 mm, and the numerical aperture NA is 0.22.

[0021] In a possible design, the collimating optical unit further includes a rotation module, the first collimating mirror is arranged on the rotation module, and the rotation module is used to adjust the azimuth angle and the elevation angle of the first collimating mirror.

[0022] In a possible design, the visible light emitting unit includes a control and power supply system and a plurality of one-to-one corresponding xenon lamps and ellipsoidal condensers, each of the xenon lamps is respectively arranged at the inner center of the corresponding ellipsoidal condenser; the control and power supply system is used to control the on and off of the xenon lamp;

[0023] Each of the xenon lamps is used to emit visible light, and each of the ellipsoidal condenser is used to reflect the visible light emitted by the corresponding xenon lamp to the light path reflector.

[0024] The embodiment of the present invention provides a visible light-laser integrated emission system, which includes an integrator and a first collimator by setting a collimating optical unit. First, the integrator is used to adjust the incident horizontal light beam into a uniform light beam; then, the first collimator is used to reflect the uniform light beam onto the object to be measured. In this way, when measuring the object to be measured, the integrated emission system can be used to complete visible light testing and laser testing without adjusting or replacing the emission system, thereby improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a flow chart of a visible light-laser integrated emission system provided by one embodiment of the present invention;

[0027] Figure 2 Schematic diagram of a laser emitting unit provided in one embodiment of the present invention.

[0028] Reference numerals:

[0029] 1-Laser emission unit;

[0030] 11-laser; 12-second collimator; 13-fiber coupling mirror; 14-fiber jumper; 15-relay mirror; 16-dichroic beam combiner; 17-third collimator; 18-total reflector;

[0031] 2- Visible light emitting unit;

[0032] 3-collimation optical unit;

[0033] 31-light path reflector; 32-integrator; 33-first collimator;

[0034] 4-Laser reflector;

[0035] 5- Object to be measured. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] The specific implementation of the above concept is described below.

[0038] Please refer to Figure 1 , an embodiment of the present invention provides a visible light-laser integrated emission system, comprising:

[0039] Laser emitting unit 1, visible light emitting unit 2, collimating optical unit 3 and laser reflecting mirror 4;

[0040] The laser emitting unit 1 is used to emit a laser beam with a preset divergence angle to the laser reflecting mirror 4;

[0041] A visible light emitting unit 2, used for emitting visible light to the collimating optical unit 3;

[0042] The laser reflector 4 is used to introduce the laser beam into the collimator optical unit;

[0043] The collimating optical unit 3 comprises an integrator 32 and a first collimating mirror 33 which are sequentially arranged along the propagation direction of the light; the integrator 32 is used to adjust the incident visible light or laser into a uniform light beam, and the first collimating mirror 33 is used to reflect the uniform light beam onto the object 5 to be measured.

[0044] In this embodiment, by setting the collimating optical unit 3, the incident visible light or laser is first adjusted to a uniform light beam by using the integrator 32; then, the uniform light beam is reflected to the object to be measured 5 by using the first collimating mirror 33. In this way, when measuring the object to be measured 5, the visible light test and the laser test can be completed by using the integrated transmitting system, without adjusting or replacing the transmitting system, thereby improving the testing efficiency.

[0045] In some embodiments, at least one light path reflector 31 is further included; the light path reflector 31 is disposed at the front end of the integrator 32;

[0046] The optical path reflector 31 is used to reflect the visible light emitted by the visible light emitting unit 2 or the laser reflected by the laser reflector 4 to the integrator 32 .

[0047] In this embodiment, since the visible light emitted by the visible light emitting unit 2 and the laser reflected by the laser reflector 4 and the integrator need to meet a certain optical path, the length of the field occupied by the emission system is relatively large. However, the present application can achieve multiple reflections of the light beam by setting at least one optical path reflector 31, thereby reducing the planar expansion volume of the emission system while meeting the optical path requirements.

[0048] like Figure 2 As shown, in some embodiments, the laser emitting unit 1 includes at least one laser 11 and a beam shaping and expanding optical module;

[0049] Each laser 11 is used to emit laser light of different powers, and the beam shaping and expanding optical module is used to adjust the laser light emitted by each laser 11 into a laser beam with a preset divergence angle.

[0050] In this embodiment, there is no high mode requirement for the laser 11 to measure the reflection characteristics of the measured object 5, so the laser 11 uses one or two high-power, multi-mode, continuous semiconductor lasers 11. The working envelope of each laser 11 is 1.06±0.03um and 1.55±0.03um respectively. Of course, other types of lasers 11 can also be used, and this application does not make specific restrictions.

[0051] It should be noted that, if the number of lasers 11 used is different, the components of the beam shaping and expanding optical module will also be different.

[0052] In some embodiments, when the number of the laser 11 is one, the beam shaping and expanding optical module includes a second collimator 12, a fiber coupling lens 13, a fiber jumper 14, and a relay lens 15 which are sequentially arranged along the laser propagation direction;

[0053] The second collimator 12 is used to collimate the elliptical spot output by the laser 11 into a circular spot with parallel emission; the fiber coupling mirror 13 is used to couple the incident parallel light beam; the fiber jumper 14 is used to homogenize the incident laser; the relay mirror 15 is used to adjust the divergence angle of the emitted laser so that the emitted laser beam meets the preset divergence angle.

[0054] In this embodiment, the core diameter of the optical fiber jumper 14 is 0.6 mm, and the numerical aperture NA is 0.22. Of course, other sizes can also be used, and this application does not make specific restrictions. In addition, since the divergence angle of the laser emitted from the optical fiber usually does not meet the divergence angle requirements during actual experiments, it is necessary to use a relay mirror 15 to adjust the divergence angle of the emitted laser. The inventor found that when the divergence angle is not greater than 13°, the laser can cover the object 5 to be measured. Therefore, the preset divergence angle is not greater than 13°.

[0055] In some embodiments, when the number of lasers 11 is two, the beam shaping and expanding optical module further includes a dichroic beam combining mirror 16, a third collimating mirror 17 and a total reflecting mirror 18, and the dichroic beam combining mirror 16 is disposed between the second collimating mirror 12 and the fiber coupling mirror 13;

[0056] The third collimator 17 is used to collimate the elliptical light spot output by another laser 11 into a parallel circular light spot, and the circular light spot is incident on the total reflection mirror 18; the total reflection mirror 18 is used to reflect all the incident laser light onto the dichroic beam combiner 16; the dichroic beam combiner 16 is used to reflect the laser light incident from the total reflection mirror 18 onto the fiber coupling mirror 13, and transmit the laser light incident from the second collimator 12 to the fiber coupling mirror 13.

[0057] In this embodiment, the role of the second collimator 12 and the third collimator 17 is to collimate the elliptical spot output by the laser 11 into a circular spot of parallel emission, so that the interface of the two laser beams after the beam combination remains basically consistent, so as to better couple into the optical fiber. The dichroic beam combiner 16 can be highly reflective to a laser of one wavelength and highly transparent to a laser of another wavelength, so as to conveniently combine the two laser beams with low loss. The fiber jumper 14 can make the emitted laser more uniform, and in particular can effectively suppress laser speckle. The formation of laser speckle lies in the spontaneous interference of the laser, forming a granular pattern in the cross section of the laser beam, which seriously affects the uniformity of the emitted laser. The role of the relay mirror 15 is to adjust the divergence angle of the emitted laser so that the divergence angle of the emitted laser beam is not greater than 13°.

[0058] In some embodiments, the collimating optical unit 3 further includes a rotation module, and the first collimating mirror 33 is disposed on the rotation module, and the rotation module is used to adjust the azimuth and elevation angles of the first collimating mirror 33. By adjusting the azimuth and elevation angles of the first collimating mirror 33, the light beam can be irradiated onto the measured object 5. In addition, the first collimating mirror 33 adopts a large-diameter collimating mirror.

[0059] In some embodiments, the visible light emitting unit 2 includes a control and power supply system and a plurality of one-to-one corresponding xenon lamps and ellipsoidal condensers, each xenon lamp is respectively arranged at the inner center of the corresponding ellipsoidal condenser; the control and power supply system is used to control the on and off of the xenon lamp;

[0060] Each xenon lamp is used to emit visible light, and each ellipsoidal condenser is used to reflect the visible light emitted by the corresponding xenon lamp to the light path reflector 31.

[0061] In this embodiment, by providing a plurality of xenon lamps and ellipsoidal condensers, the problem of excessive output power of a single lighting device can be solved. The visible light emitting unit 2 can simulate the visible light emitted by the sun.

[0062] It should be noted that, in this article, relational terms such as first, second, third and fourth are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0063] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A visible light-laser integrated emission system, characterized in that: include: A laser emitting unit (1), a visible light emitting unit (2), a collimating optical unit (3) and a laser reflecting mirror (4); The laser emitting unit (1) is used to emit a laser beam with a preset divergence angle toward the laser reflecting mirror (4); The visible light emitting unit (2) is used to emit visible light to the collimating optical unit (3); The laser reflecting mirror (4) is used to introduce the laser beam into the collimating mirror optical unit; The collimating optical unit (3) comprises an integrator (32) and a first collimating mirror (33) which are sequentially arranged along the propagation direction of light; the integrator (32) is used to adjust the incident visible light or laser into a uniform light beam, and the first collimating mirror (33) is used to reflect the uniform light beam onto the object to be measured (5).

2. The system according to claim 1, characterized in that It also includes at least one light path reflector (31); the light path reflector (31) is arranged at the front end of the integrator (32); The light path reflector (31) is used to reflect the visible light emitted by the visible light emitting unit (2) or the laser reflected by the laser reflector (4) to the integrator (32).

3. The system according to claim 1, characterized in that The preset divergence angle is no greater than 13°.

4. The system according to claim 1, characterized in that The laser emitting unit (1) comprises at least one laser (11) and a beam shaping and expanding optical module; Each of the lasers (11) is used to emit laser light of different powers, and the beam shaping and expanding optical module is used to adjust the laser light emitted by each of the lasers (11) into a laser light beam with the preset divergence angle.

5. The system according to claim 4, characterized in that When the number of the laser (11) is one, the beam shaping and expanding optical module comprises a second collimating mirror (12), a fiber coupling mirror (13), a fiber jumper (14) and a relay mirror (15) which are sequentially arranged along the laser propagation direction; The second collimator (12) is used to collimate the elliptical light spot output by the laser (11) into a circular light spot that is emitted in parallel; the fiber coupling mirror (13) is used to couple the incident parallel light beam; the fiber jumper (14) is used to homogenize the incident laser; and the relay mirror (15) is used to adjust the divergence angle of the emitted laser so that the emitted laser beam meets the preset divergence angle.

6. The system according to claim 5, characterized in that When the number of the lasers (11) is two, the beam shaping and expanding optical module further comprises a dichroic beam combining mirror (16), a third collimating mirror (17) and a total reflecting mirror (18), wherein the dichroic beam combining mirror (16) is arranged between the second collimating mirror (12) and the optical fiber coupling mirror (13); The third collimator (17) is used to collimate the elliptical light spot output by another laser (11) into a circular light spot with parallel emission, and the circular light spot is incident on the total reflection mirror (18); the total reflection mirror (18) is used to reflect all the incident laser light onto the dichroic beam combiner (16); the dichroic beam combiner (16) is used to reflect the laser light incident from the total reflection mirror (18) onto the fiber coupling mirror (13), and transmit the laser light incident from the second collimator (12) to the fiber coupling mirror (13).

7. The system according to claim 5, characterized in that The core diameter of the optical fiber jumper (14) is 0.6 mm, and the numerical aperture NA is 0.

22.

8. The system according to claim 1, characterized in that The collimating optical unit (3) further comprises a rotation module, the first collimating mirror (33) is arranged on the rotation module, and the rotation module is used to adjust the azimuth angle and the elevation angle of the first collimating mirror (33).

9. The system according to claim 2, characterized in that The visible light emitting unit (2) comprises a control and power supply system and a plurality of one-to-one corresponding xenon lamps and ellipsoidal condensers, each of the xenon lamps being arranged at the inner center of a corresponding ellipsoidal condenser; the control and power supply system is used to control the on and off of the xenon lamp; Each of the xenon lamps is used to emit visible light, and each of the ellipsoidal condenser mirrors is used to reflect the visible light emitted by the corresponding xenon lamp to the light path reflector (31).

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