Laser three-dimensional contour camera capable of suppressing stray light

Abstract

The utility model discloses a laser three-dimensional contour camera capable of suppressing stray light, which comprises a shell, a laser light source, an image acquisition element and an optical lens, the shell is provided with an internal accommodating space, and the laser light source, the image acquisition element and the optical lens are all arranged in the internal accommodating space of the shell. The laser light source is fixed on the shell through a mounting bracket, an opening is formed in one end, opposite to the laser light source, of the shell, the laser three-dimensional contour camera capable of inhibiting stray light further comprises a collimating lens module, the collimating lens module comprises a shell and a collimating lens arranged in the shell, and the collimating lens is arranged in the shell. The shell and the mounting bracket are integrally arranged or fixed at the periphery of the opening of the shell, and the divergence angle of the laser light source is changed through the collimating lens, so that laser emitted from the collimating lens module is irradiated on a measured object in a parallel and vertical manner, and light reflection of an irregular surface of the measured object can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of machinery, and particularly relates to a laser three-dimensional profile camera capable of suppressing stray light.

Background Art

[0002] The use of lasers to measure the three-dimensional dimensions of objects has been widely applied in the industrial field. Such structures all include a laser light source, an optical lens, and corresponding image acquisition elements. During operation, the laser light source (such as a point laser or a line laser) emits laser light to an external object. The laser light is reflected by the external object and then irradiates on the image acquisition element through the optical lens. Then, the dimensions or motion parameters of the external object are calculated using the images collected by the image acquisition element, etc. However, existing 3D industrial cameras on the market generally use a line laser light source with a divergence angle. When the light source with a divergence angle irradiates on the surface of an irregular object to be measured, strong specular reflection will occur, resulting in misjudgment of the 3D industrial camera, thereby affecting the measurement accuracy.

Content of the Utility Model

[0003] The purpose of the utility model is to provide a laser three-dimensional profile camera capable of suppressing stray light, so as to solve the problem that the measurement accuracy of existing laser three-dimensional profile cameras is affected by multiple reflected lights when measuring irregular surfaces.

[0004] To achieve the above purpose, the laser three-dimensional profile camera capable of suppressing stray light of the utility model includes a housing, a laser light source, an image acquisition element, and an optical lens. The housing is provided with an internal accommodation space, and the laser light source, the image acquisition element, and the optical lens are all installed in the internal accommodation space of the housing. The laser light source is fixed to the housing through a mounting bracket. One end of the housing opposite to the laser light source is provided with an opening. The laser three-dimensional profile camera capable of suppressing stray light further includes a collimating lens module. The collimating lens module includes a housing and a collimating lens disposed inside the housing. The housing is integrally provided with the mounting bracket, and the housing and the mounting bracket are fixedly installed on a side plate of the housing. The laser light emitted by the laser light source passes through the collimating lens and then exits from the opening.

[0005] According to the above main features, the mounting bracket is provided with a through hole along the longitudinal axis in the middle, and the laser light source is installed in the through hole.

[0006] According to the above main features, a notch is provided on one side of the bottom of the housing of the collimating lens module, and the collimating lens is installed in the housing of the collimating lens module through the notch.

[0007] To achieve the above object, a laser three-dimensional contour camera capable of suppressing stray light according to the present utility model includes a housing, a laser light source, an image acquisition element, and an optical lens. The housing is provided with an internal accommodation space, and the laser light source, the image acquisition element, and the optical lens are all installed in the internal accommodation space of the housing. The laser light source is fixed to the housing through a mounting bracket. One end of the housing opposite to the laser light source is provided with an opening. The laser three-dimensional contour camera capable of suppressing stray light further includes a collimating lens module. The collimating lens module is fixed to the periphery of the opening of the housing, and the collimating lens module includes a housing and a collimating lens provided in the housing. The laser emitted by the laser light source is emitted from the opening and then enters the collimating lens of the collimating lens module, and is emitted after passing through the collimating lens.

[0008] According to the above main features, the mounting bracket is provided with a through hole in the middle along the longitudinal axis, and the laser light source is installed in the through hole.

[0009] According to the above main features, the housing of the collimating lens module and the housing of the laser three-dimensional contour camera capable of suppressing stray light are provided with corresponding engaging structures, and the housing of the collimating lens module is fixed to the housing of the laser three-dimensional contour camera capable of suppressing stray light through the engaging structures.

[0010] According to the above main features, a notch is provided on one side of the bottom of the housing of the collimating lens module, and the collimating lens is installed in the housing of the collimating lens module through the notch.

[0011] Compared with the prior art, by providing a collimating lens module, the present utility model can change the divergence angle of the laser light emitted by the laser light source, so that the laser light processed by the collimating lens module is perpendicularly irradiated on the object to be measured as parallel light, thereby reducing the reflection of the irregular surface of the object to be measured.

Description of the Drawings

[0012] Figure 1 Schematic diagram of the cube decomposition of the first embodiment of the laser three-dimensional contour camera capable of suppressing stray light according to the present utility model.

[0013] Figure 2 Schematic diagram of the partial three-dimensional combination of the first embodiment of the laser three-dimensional contour camera capable of suppressing stray light according to the present utility model.

[0014] Figure 3 Schematic diagram of the cube decomposition of the second embodiment of the laser three-dimensional contour camera capable of suppressing stray light according to the present utility model.

[0015] Figure 4Partial three-dimensional combined schematic diagram of the second embodiment of the laser three-dimensional contour camera capable of suppressing stray light according to the present utility model.

Specific implementation manner

[0016] Please refer to Figure 1 And Figure 2 As shown, it is a schematic structural diagram of the first embodiment of the laser three-dimensional contour camera capable of suppressing stray light according to the present utility model. The laser three-dimensional contour camera capable of suppressing stray light according to the present utility model includes a housing 10, a laser light source 11, an image acquisition element (not shown), and an optical lens (not shown). The housing 10 is provided with an internal accommodation space, and the laser light source 11, the image acquisition element, and the optical lens are all installed in the internal accommodation space of the housing 10. The laser light source 11 is fixed to the housing 10 through a mounting bracket 12. One end of the housing 10 opposite to the laser light source 11 is provided with an opening (not shown). The laser three-dimensional contour camera capable of suppressing stray light further includes a collimating lens module 13. The collimating lens module 13 includes a housing 130 and a collimating lens 131 disposed in the housing 130. The housing 130 and the mounting bracket 12 are integrally provided, and the housing 130 and the mounting bracket 12 are fixedly installed on a side plate 100 of the housing 10. The laser emitted by the laser light source 11 passes through the collimating lens 131 and then exits from the opening. In the above first embodiment, by integrally providing the housing 130 and the mounting bracket 12, the distance between the collimating lens 131 and the laser light source 11 is made closer, which is generally applicable to a laser three-dimensional contour camera with a small measurement range and has a higher accuracy.

[0017] During specific implementation, the mounting bracket 12 is provided with a through hole 120 along the longitudinal axis in the middle, and the laser light source 11 is installed in the through hole 120.

[0018] In addition, a notch 132 is provided on one side of the bottom of the housing 130 of the collimating lens module 13, and the collimating lens 131 is installed in the housing 130 of the collimating lens module 13 through the notch 132.

[0019] Please refer to Figure 3 And Figure 4As shown in the figure, it is a schematic structural diagram of the second embodiment of a laser three-dimensional profile camera capable of suppressing stray light according to the present utility model. The laser three-dimensional profile camera capable of suppressing stray light according to the present utility model includes a housing 20, a laser light source 21, an image acquisition element (not shown), and an optical lens (not shown). The housing 20 is provided with an internal accommodation space, and the laser light source 21, the image acquisition element, and the optical lens are all installed in the internal accommodation space of the housing 20. The laser light source 21 is fixed to the housing 20 through a mounting bracket 22. One end of the housing 20 opposite to the laser light source 21 is provided with an opening (not shown). The laser three-dimensional profile camera capable of suppressing stray light further includes a collimating lens module 23. The collimating lens module 23 includes a housing 230 and a collimating lens 231 disposed inside the housing 230. The collimating lens module 23 is fixed around the opening of the housing 20. The laser emitted by the laser light source 21 enters the collimating lens 231 of the collimating lens module 23 after being emitted from the opening, and is emitted after passing through the collimating lens 231. In the second embodiment, by fixing the collimating lens module 23 around the opening of the housing 20, the distance between the collimating lens 231 and the laser light source 21 is made larger, so that a wider parallel light beam can be obtained, thus being applicable to a large-range laser three-dimensional profile camera.

[0020] During specific implementation, the mounting bracket 22 is provided with a through hole 220 in the middle along the longitudinal axis direction, and the laser light source 21 is installed in the through hole 220.

[0021] In addition, the housing 230 of the collimating lens module 23 and the housing 20 of the laser three-dimensional profile camera capable of suppressing stray light are provided with corresponding engaging structures (not shown). The housing 230 of the collimating lens module 23 is fixed to the housing 20 of the laser three-dimensional profile camera capable of suppressing stray light through the engaging structure. The engaging structure can be a snap or an opening structure, which has been described in many prior arts and will not be elaborated here.

[0022] Furthermore, a notch 232 is provided on one side of the bottom of the housing 230 of the collimating lens module 23, and the collimating lens 231 is installed in the housing 230 of the collimating lens module 23 through the notch 232.

[0023] Compared with the prior art, the utility model can change the divergence angle of the laser light emitted by the laser light source by arranging a collimating lens module, so that the laser light processed by the collimating lens module irradiates the object to be measured perpendicularly as parallel light, thereby reducing the reflection of the irregular surface of the object to be measured. And using parallel light to irradiate the object to be measured can reduce the dead angle area of measurement, or using parallel light to irradiate the inclined surface or arc surface of the object to be measured can reduce scattered light, thereby increasing the brightness of the reflected light collected by the optical sensor.

[0024] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solution and the inventive concept of the utility model, and all such changes or substitutions should fall within the protection scope of the appended claims of the utility model.

Claims

1. A laser three-dimensional profile camera capable of suppressing stray light, comprising a housing, a laser light source, an image acquisition element and an optical lens, wherein the housing is provided with an internal receiving space, and the laser light source, the image acquisition element and the optical lens are all installed in the internal receiving space of the housing, the laser light source is fixed to the housing through a mounting bracket, and an opening is provided at one end of the housing opposite to the laser light source, characterized in that: The laser three-dimensional contour camera capable of suppressing stray light also includes a collimating lens module, which includes a shell and a collimating lens arranged in the shell. The shell and the mounting bracket are integrally arranged, and the shell and the mounting bracket are fixedly mounted on a side panel of the shell. The laser emitted by the laser light source passes through the collimating lens and is emitted from the opening.

2. The laser 3D profile camera capable of suppressing stray light as claimed in claim 1, characterized in that: The mounting bracket is provided with a through hole in the middle along the longitudinal axis, and the laser light source is mounted in the through hole.

3. The laser 3D profile camera capable of suppressing stray light according to claim 1, characterized in that: A notch is provided on one side of the bottom of the shell of the collimating lens module, and the collimating lens is installed in the shell of the collimating lens module through the notch.

4. A laser three-dimensional profile camera capable of suppressing stray light, comprising a housing, a laser light source, an image acquisition element and an optical lens, wherein the housing is provided with an internal receiving space, and the laser light source, the image acquisition element and the optical lens are all installed in the internal receiving space of the housing, the laser light source is fixed to the housing through a mounting bracket, and an opening is provided at one end of the housing opposite to the laser light source, characterized in that: The laser three-dimensional contour camera capable of suppressing stray light also includes a collimating lens module, which is fixed to the periphery of the shell opening, and includes a shell and a collimating lens arranged in the shell. The laser emitted by the laser light source is emitted from the opening, enters the collimating lens of the collimating lens module, and is emitted after passing through the collimating lens.

5. The laser 3D profile camera capable of suppressing stray light as claimed in claim 4, characterized in that: The mounting bracket is provided with a through hole in the middle along the longitudinal axis, and the laser light source is mounted in the through hole.

6. The laser 3D profile camera capable of suppressing stray light as claimed in claim 4, characterized in that: The housing of the collimating lens module and the housing of the laser 3D profile camera capable of suppressing stray light are provided with corresponding snap-fit ​​structures, and the housing of the collimating lens module is fixed to the housing of the laser 3D profile camera capable of suppressing stray light through the snap-fit ​​structures.

7. The laser 3D profile camera capable of suppressing stray light according to claim 4, characterized in that: A notch is provided on one side of the bottom of the shell of the collimating lens module, and the collimating lens is installed in the shell of the collimating lens module through the notch.

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