CN220136967U - Light source device and detection apparatus - Google Patents
Light source device and detection apparatus Download PDFInfo
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- CN220136967U CN220136967U CN202320897249.1U CN202320897249U CN220136967U CN 220136967 U CN220136967 U CN 220136967U CN 202320897249 U CN202320897249 U CN 202320897249U CN 220136967 U CN220136967 U CN 220136967U
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- 238000007689 inspection Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
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Abstract
The utility model provides a light source device and an optical detection apparatus. The light source device includes: a first housing formed with a cavity, the first housing being provided with a light introduction assembly for introducing light emitted from a light emitting device into the cavity; and the first shutter is arranged in the cavity and fixed on the first shell, the first shutter is provided with a light incidence surface, light emitted by the light emitting device irradiates the light incidence surface along a first incidence direction through the light introducing assembly, and an included angle between the first incidence direction and the line surface of the light incidence surface is an acute angle. By the arrangement of the first shutter, light rays emitted by the light emitting device are prevented from returning to the light emitting device along the original outgoing direction when the light rays irradiate the first shutter, so that the light emitting device is prevented from being damaged.
Description
Technical Field
The present utility model relates to the field of optical detection technologies, and in particular, to a light source device and a detection apparatus.
Background
In the optical path cavity for optical detection, in order to distinguish between different detection regions, it is generally necessary to switch between the detection region and the non-detection region, and therefore, it is necessary to provide a shutter on the detection optical path to switch between the detection region and the non-detection region. In the prior art, shutters are typically placed between the light emitting device and the light path cavity. However, when the shutter is in a closed state, light emitted from the light emitting device is reflected after being irradiated to the shutter, and the reflected light returns to the light emitting device along an original transmission direction, so that the light emitting device is affected, and the temperature of the light emitting device is increased due to the reflected light, so that the light emitting device is damaged.
Disclosure of Invention
In order to ameliorate at least some of the above disadvantages or shortcomings, embodiments of the present utility model provide a light source device and a detection apparatus for preventing light emitted from a light emitting device from returning to the light emitting device in an original transmission direction, so as to avoid damaging the light emitting device.
Specifically, the embodiment of the utility model provides a light source device, which comprises: a first housing formed with a cavity, the first housing being provided with a light introduction assembly for introducing light emitted from a light emitting device into the cavity; and the first shutter is arranged in the cavity and fixed on the first shell, the first shutter is provided with a light incidence surface, light emitted by the light emitting device irradiates the light incidence surface along a first incidence direction through the light introducing assembly, and an included angle between the first incidence direction and the line surface of the light incidence surface is an acute angle.
In one embodiment of the present utility model, the light source device further includes: a first optical trap connected to the first housing; the first housing is further provided with a first through hole communicated with the first optical trap, and the first shutter is configured to reflect the light rays to enter the first optical trap through the first through hole when in a closed state.
In one embodiment of the present utility model, an exhaust port is further provided on the first optical trap.
In one embodiment of the present utility model, the light source device further includes: a second shutter assembly, the second shutter assembly comprising: the second shell is arranged on one side, away from the cavity, of the side wall of the first shell; and the shutter main body is arranged in the second shell, a first light incidence through hole and a reflecting mirror are arranged on the shutter main body, the shutter main body can move to a first position or a second position relative to the second shell, when the shutter main body is positioned at the first position, light enters the first shell through the first light incidence through hole, and when the shutter main body is positioned at the second position, the reflecting mirror reflects the light.
In one embodiment of the present utility model, when the shutter body is in the second position, the light irradiates the surface of the reflecting mirror along a second incident direction, and an included angle between the second incident direction and a line surface of the reflecting mirror is an acute angle.
In one embodiment of the present utility model, the second shutter assembly further includes: a second optical trap connected to the second housing; the second shell is also provided with a second through hole communicated with the second optical trap, and when the shutter main body is positioned at a second position, the reflecting mirror reflects the light rays to enter the second optical trap through the second through hole.
In one embodiment of the present utility model, the light introducing assembly includes: a second light incident through hole provided on a side wall of the first housing; the first reflecting piece is arranged in the cavity close to the second light incidence through hole and is provided with a first reflecting surface; and the second reflecting piece is arranged in the cavity close to the first shutter, the second reflecting piece is provided with a second reflecting surface, and the light introducing component is used for enabling the light to pass through the second light incidence through hole and sequentially pass through the first reflecting surface and the second reflecting surface to be transmitted to the first shutter along the first incidence direction.
In one embodiment of the present utility model, the first shutter is configured to eject the light in a reflection direction when in a closed state, the first reflecting member and the second reflecting member are located in the reflection direction, and a space is provided between the first reflecting member and the second reflecting member in the reflection direction.
In one embodiment of the utility model, the first shutter is a high speed shutter.
An optical detection device provided in an embodiment of the present utility model includes: the detection component is used for detecting; and the light source device is used for emitting the light rays emitted by the light emitting device to the detection assembly.
From the above, the technical features of the present utility model may have one or more of the following advantages: the light introducing assembly is arranged on the first shell of the light source device, the first shutter is arranged on the first shell, light passes through the light introducing assembly and irradiates the light incident surface of the first shutter along the first incident direction, the first shutter is arranged so that the first incident direction and the line surface included angle of the light incident surface are acute angles, and therefore, the light emitted by the light emitting device is prevented from returning to the light emitting device along the original outgoing direction when irradiated to the first shutter through the arrangement of the first shutter, and the light emitting device is prevented from being damaged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a light source device according to an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a positional relationship between light and a first shutter in an embodiment of the utility model.
Fig. 3 is a schematic structural diagram of another light source device according to an embodiment of the present utility model.
Fig. 4 is a schematic structural diagram of another light source device according to an embodiment of the utility model.
Fig. 5 is an exploded view of the light source device of fig. 4.
Fig. 6 is a schematic structural view of the second shutter assembly of fig. 5.
Fig. 7 is an exploded view of the second shutter assembly of fig. 5.
FIG. 8 is a schematic diagram of the positional relationship between the light and the reflector in the present embodiment.
Fig. 9 is a schematic structural diagram of a detection device according to an embodiment of the present utility model.
Number of main elements:
1 is a detection device; 10 is a light source device; 20 is a detection component; 100 is a first housing; 101 is a cavity; 110 is a sidewall; 111 is a second light incident through hole; 112 is the oblique line where the first incident direction is located; 113 is projection; 120 is the upper sidewall; 121 is a first through hole; 200 is a first shutter; 300 is a first optical trap; 310 is an exhaust port; 400 is a second shutter assembly; 410 is a second housing; 411 is a first sidewall; 4111 is a third light incident through hole; 412 is a second sidewall; 4121 is a fourth light incident through hole; 413 is an upper sidewall; 4131 is a second via; 420 is a shutter body; 421 is a first light incident through hole; 422 is a mirror; 423 is an oblique line in which the second light incident direction is located; 424 is projection; 430 is a driving member; 440 is a fixed bracket; 450 is a second optical trap; 500 is a first reflector; 600 is a second reflector.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, a light source device 10 according to an embodiment of the present utility model includes: a first housing 100 and a first shutter 200.
Specifically, the first housing 100 is formed with a cavity 101, and the first housing 100 is provided with a light introduction assembly that irradiates light emitted from a light emitting device, which may be a light emitting device such as a laser, to the first shutter 200. Specifically, the light introducing assembly may, for example, include a second light incident through hole 111, and the second light incident through hole 111 may, for example, be provided on the sidewall 110 of the first housing 100, the second light incident through hole 111 being for allowing light emitted from the light emitting device to enter the cavity 101 through the second light incident through hole 111. The specific position of the second light incident through hole 111 on the first housing 100 may be set according to the position of the light emitting device, for example, but of course, may also be set according to the actual requirement, and the embodiment is not limited thereto.
The first shutter 200 is disposed in the cavity 101 and is fixed to the first housing 100. The first shutter 200 may be, for example, a high-speed shutter. The first shutter 200 has a light incident surface, and light emitted by the light emitting device irradiates the light incident surface of the first shutter 200 along a first incident direction, where an included angle between the first incident direction and the light incident surface of the first shutter 200 is an acute angle. The included angle of the line surface is the angle formed by oblique line and the projection of the oblique line on the plane, and the acute angle is the angle larger than 0 DEG and smaller than 90 deg. Referring to fig. 2, the oblique line 112 of the light beam in the first incident direction irradiates the light beam incident surface of the first shutter 200, and the included angle (α in fig. 2) between the oblique line 112 of the light beam in the first incident direction and the projective 113 of the light beam on the light beam incident surface of the first shutter 200 is an acute angle, i.e., the first incident direction of the light beam is not perpendicular to the light beam incident surface of the second shutter 200. The setting angle of the first shutter 200 is set according to the first incident direction of the light emitted by the light emitting device to the first shutter 200, and the setting angle of the first shutter 200 is only required to enable the included angle between the first incident direction and the line surface of the light incident surface of the first shutter 200 to be an acute angle. Thus, by the arrangement of the first shutter 200, the light emitted from the light emitting device is prevented from returning to the light emitting device in the original outgoing direction when the light is irradiated to the first shutter 200, so as to avoid damaging the light emitting device.
Referring to fig. 3, the light source device 10 may further include, for example, a first optical trap 300, the first optical trap 300 being connected to the first housing 100, and the first housing 100 being provided with a first through hole 121 communicating with the first optical trap 300. Specifically, the first through hole 121 may be disposed on the upper sidewall 120 of the first housing, for example, the first optical trap 300 is disposed at a side of the upper sidewall 120 of the first housing 100 away from the cavity 101, and the first optical trap 300 communicates with the first through hole 121. The first through hole 121 may also be disposed on the sidewall 110 of the first housing 100, for example, and the first optical trap 300 is correspondingly disposed on a side of the sidewall 110 away from the cavity 101. The specific positions of the first through hole 121 and the first optical trap 300 may be set according to the transmission direction of the light after the light is reflected by the first shutter 200, that is, the first through hole 121 is disposed at the position where the first shutter 200 irradiates the reflected light after the light is reflected to the first housing 100. In this way, the first shutter 200 can reflect the light irradiated to the first shutter 200 and irradiate the light into the first optical trap 300 through the first through hole 121 when in the closed state, so that the heat generated by the light can be absorbed by the first optical trap 300, and the influence of the heat generated by the light on the light path cavity is avoided. Further, for example, an exhaust port 310 may be provided in the first optical trap 300, and the first optical trap 300 may extract the gas in the cavity 101 through the exhaust port 310 and dissipate the heat of the first optical trap 310 having a temperature rise due to the absorption of the laser light.
Referring back to fig. 1 and 3, the light introducing assembly may further include, for example, a first reflector 500 and a second reflector 600, and the first reflector 500 and the second reflector 600 may be, for example, mirrors. The first reflecting member 500 is disposed in the cavity 101 of the first housing 100 near the second light incident through hole 111, the first reflecting member 500 having a first reflecting surface; the second reflecting member 600 is disposed in the cavity 101 near the first shutter 200, and the second reflecting member 600 has a second reflecting surface. The light emitted from the light emitting device passes through the second light incident through hole 111 and is transmitted to the first shutter 200 along the first incident direction via the first reflecting surface and the second reflecting surface in sequence. The first and second reflectors 500 and 600 are provided with a space, and the first shutter 200 emits light in a reflection direction when in a closed state, and the first and second reflectors 500 and 600 are provided with a space in the reflection direction. Thus, when the first shutter 200 is in the closed state, the light irradiated onto the first shutter 200 is prevented from being reflected and irradiated onto the first reflecting member 500 or the second reflecting member 600, so as to prevent the first reflecting member 500 or the second reflecting member 600 from being damaged by the reflected light.
Referring to fig. 4 to 7, the light source device 10 may further include, for example, a second shutter assembly 400, and the second shutter assembly 400 may include, for example, a second housing 410 and a shutter body 420.
The second case 410 may be disposed, for example, on a side of the sidewall 110 of the first case 100 away from the cavity 101, the second case 410 having opposite first and second sidewalls 411 and 412, the first sidewall 411 being adjacent to the first case 100, the first sidewall 411 being provided with a third light incident through hole 4111, the second sidewall 412 being provided with a fourth light incident through hole 4121, the third and fourth light incident through holes 4111 and 4121 corresponding to the second light incident through hole 111. The shutter body 420 is disposed in the second housing 410, and the shutter body 420 is provided with a first light incident through hole 421 and a reflecting mirror 422, and the shutter body 420 is movable to a first position or a second position with respect to the second housing 410. When the shutter body 420 is at the first position, the light enters the first case 410 through the first light incident through hole 421, and when the shutter body 420 is at the second position, the reflecting mirror 422 reflects the light.
Specifically, the second shutter assembly 400 may further include a driving member 430 and a fixing bracket 440, for example. The driving member 430 is connected to the shutter body 420, and the driving member 430 is used to move the shutter body 420 to be in the first position or the second position. The driving member 430 may be, for example, an air cylinder, or may be, for example, another driving member, which is not limited in this embodiment. The fixing bracket 440 is coupled to the second housing 410, the shutter body 420, and the driving member 430, and is fixed to the sidewall 110 of the first housing 100. When the shutter body 420 is at the first position, the first light incident through hole 421 and the second light incident through hole 111 are at the same horizontal line, that is, the light emitted from the light emitting device sequentially passes through the fourth light incident through hole 4121, the first light incident through hole 421, the third light incident through hole 4111 and the second light incident through hole 111 to enter the cavity 101 of the light source device 10. When the shutter body 420 is at the second position, the reflecting mirror 422 is at the same level as the second light incident through hole 111, and the light emitted from the light emitting device is irradiated onto the reflecting mirror 422 through the fourth light incident through hole 4121.
Further, the reflecting mirror 422 may be disposed, for example, obliquely, and when the shutter body 420 is in the second position, the light irradiates the surface of the reflecting mirror 422 along the second incident direction, and the line angle between the second incident direction and the surface of the reflecting mirror 422 is an acute angle. The included angle of the line surface is the angle formed by oblique line and the projection of the oblique line on the plane, and the acute angle is the angle larger than 0 DEG and smaller than 90 deg. Referring to fig. 8, an oblique line 423 of the light beam in the second incident direction irradiates the surface of the mirror 422, and an included angle (β in fig. 8) between the oblique line 423 of the light beam in the second incident direction and the projection 424 of the light beam on the surface of the mirror 422 is an acute angle, that is, the second incident direction of the light beam is not perpendicular to the surface of the mirror 422. Thus, when the light emitted by the light emitting device irradiates the surface of the reflecting mirror 422, the reflecting mirror 422 is prevented from reflecting the light and irradiating along the original transmission direction, so that the light emitting device is prevented from being damaged.
Referring again to fig. 6, the second shutter assembly 400 further includes a second optical trap 450, the second optical trap 450 being connected to the second housing 410, and a second through hole 4131 communicating with the second optical trap 450 being provided on the second housing 410. Specifically, the second through hole 4131 may be provided, for example, on the upper sidewall 413 of the second housing 410, and the second optical trap 450 is provided at a side of the upper sidewall 413 of the second housing 410 remote from the shutter body 420 and communicates with the second through hole 4131. The second through hole 4131 may also be disposed on the second sidewall 412, for example, and the second optical trap 450 is correspondingly disposed on a side of the second sidewall 412 away from the shutter body 420. The specific positions of the second through hole 4131 and the second optical trap 450 may be set according to the transmission direction of the light after the reflection of the light by the reflector 422. That is, the second through hole 4131 is provided at a position where the reflection mirror 422 reflects the light and then irradiates the reflected light to the second housing 410. In this way, the reflecting mirror 422 can reflect the light irradiated to the reflecting mirror 422 and irradiate into the second optical trap 450 through the second through hole 4131, so that the heat generated by the light can be absorbed through the second optical trap 450, and the influence of the heat generated by the light on the light path cavity is avoided. Further, for example, an exhaust port may be provided in the second optical trap 450, and the second optical trap 450 may extract the gas in the cavity 101 through the exhaust port and dissipate the heat of the second optical trap 450 having a temperature rise due to the absorption of the laser light. .
Referring to fig. 7, an embodiment of the present utility model further provides an optical inspection apparatus 1, which includes an inspection assembly 20 and the light source device 10 according to the above embodiment, where the light source device 10 is configured to emit light emitted by the light emitting device to the inspection assembly 20, and the inspection assembly 20 is configured to optically inspect a product. The inspection assembly 20 may, for example, include a plurality of inspection probes for capturing images of the product of the inspection area, which may, for example, include a lens and a CCD camera. Of course, the detecting assembly 20 may further include other detecting elements, and the optical detecting apparatus 1 may further include other devices such as a carrying device and a control device, which is not limited to this embodiment.
From the above, the technical features of the present utility model may have one or more of the following advantages: by arranging the light introducing assembly on the first housing 100 of the light source device 10 and arranging the first shutter 200 on the first housing 100, light passes through the light introducing assembly and irradiates the light incident surface of the first shutter 200 along the first incident direction, and the first shutter 200 is arranged so that the included angle between the first incident direction and the line surface of the light incident surface is an acute angle, thus, by arranging the first shutter 200, the light emitted by the light emitting device is prevented from returning to the light emitting device along the original outgoing direction when irradiating the first shutter 200, so as to avoid damaging the light emitting device.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present utility model, and the technical solutions of the embodiments may be arbitrarily combined and matched without conflict in technical features, contradiction in structure, and departure from the purpose of the present utility model.
In the several embodiments provided in the present utility model, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A light source device (10), characterized by comprising:
a first housing (100) forming a cavity (101), the first housing (100) being provided with a light introduction assembly for introducing light emitted by a light emitting device into the cavity; and
the first shutter (200) is arranged in the cavity (101) and is fixed on the first shell (100), the first shutter (200) is provided with a light incidence surface, light emitted by the light emitting device irradiates the light incidence surface along a first incidence direction through the light introducing component, and an included angle between the first incidence direction and the line surface of the light incidence surface is an acute angle.
2. The light source device (10) according to claim 1, wherein the light source device (10) further comprises: a first optical trap (300) connected to the first housing (100); the first housing (100) is further provided with a first through hole (121) communicating with the first optical trap (300), and the first shutter (200) is configured to reflect the light rays to enter the first optical trap (300) through the first through hole (121) when in a closed state.
3. The light source device (10) according to claim 2, wherein the first light trap (300) is further provided with an exhaust port (310).
4. The light source device (10) according to claim 1, further comprising: a second shutter assembly (400), the second shutter assembly (400) comprising:
a second housing (410) disposed on a side of a side wall (110) of the first housing (100) away from the cavity (101); and
the shutter main body (420) is arranged in the second shell (410), a first light incidence through hole (421) and a reflecting mirror (422) are arranged on the shutter main body (420), the shutter main body (420) can move to a first position or a second position relative to the second shell (410), when the shutter main body (420) is positioned at the first position, light enters the first shell (100) through the first light incidence through hole (421), and when the shutter main body (420) is positioned at the second position, the reflecting mirror (422) reflects the light.
5. The light source device (10) of claim 4, wherein the light is directed to the surface of the reflector (422) in a second direction of incidence when the shutter body (420) is in the second position, the second direction of incidence being at an acute angle to a line plane of the surface of the reflector (422).
6. The light source device (10) of claim 5, wherein the second shutter assembly (400) further comprises: a second optical trap (450) connected to the second housing (410); the second housing (410) is further provided with a second through hole (4131) communicated with the second optical trap (450), and when the shutter main body (420) is in the second position, the reflecting mirror (422) reflects the light to enter the second optical trap (450) through the second through hole (4131).
7. The light source device (10) according to claim 1, wherein the light introducing assembly comprises:
a second light incidence through hole (111) provided on a side wall (110) of the first housing (100);
a first reflecting member (500) disposed in the cavity (101) near the second light incident through hole (111), the first reflecting member (500) having a first reflecting surface; and
and a second reflecting member (600) disposed in the cavity (101) near the first shutter (200), the second reflecting member (600) having a second reflecting surface, the light introducing assembly being configured to allow the light to pass through the second light incident through hole (111) and to be transmitted to the first shutter (200) in the first incident direction sequentially via the first reflecting surface and the second reflecting surface.
8. The light source device (10) according to claim 7, wherein the first shutter (200) is configured to emit the light in a reflection direction when in a closed state, the first reflecting member (500) and the second reflecting member (600) are located in the reflection direction, and a space is provided in the reflection direction between the first reflecting member (500) and the second reflecting member (600).
9. The light source device (10) according to claim 1, wherein the first shutter (200) is a high-speed shutter.
10. An optical detection device (1), characterized by comprising:
a detection assembly (20) for optical detection of the product; and
the light source device (10) according to any one of claims 1 to 9, for emitting light rays emitted by the light emitting means to the detection assembly (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320897249.1U CN220136967U (en) | 2023-04-12 | 2023-04-12 | Light source device and detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320897249.1U CN220136967U (en) | 2023-04-12 | 2023-04-12 | Light source device and detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220136967U true CN220136967U (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320897249.1U Active CN220136967U (en) | 2023-04-12 | 2023-04-12 | Light source device and detection apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN220136967U (en) |
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2023
- 2023-04-12 CN CN202320897249.1U patent/CN220136967U/en active Active
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