Color temperature adjustable light source device and detection device
By independently adjusting the light mixing of warm and cool color lamp beads to form the required color temperature, the problem of inaccurate adjustment of light source color temperature in the prior art is solved, and higher precision light source lighting and detection are achieved.
Patent Information
- Application Number
- CN202422410345.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the prior art, the color temperature adjustment method of the light source is easily affected by the driving current and temperature of the lamp beads, resulting in inaccurate adjustment.
Using separate adjustment, the light of the warm and cool color lamp beads is independently adjusted through the first and second light output units, and the two light rays are mixed with the reflector and the light splitter to form the required color temperature to avoid current and temperature interference.
More accurate color temperature adjustment is achieved, reducing interference between light, and improving the lighting effect and detection accuracy of the light source.
Smart Images
Figure CN223165456U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machine vision detection, in particular to a color temperature adjustable light source device and a detection device. Background Art
[0002] Color temperature is a core indicator in the performance evaluation of light sources. Currently, the conventional color temperature adjustment method is to install two lamp beads with different color temperatures on the circuit board of the light source, and adjust the color temperature by adjusting the ratio of the driving current of the two lamp beads. In this adjustment method, because the driving currents of the two lamp beads on the circuit board easily interfere with each other, and the light output effect of the lamp beads is very easily affected by the temperature of the circuit board (that is, when the light output power of one lamp bead is large, it may affect the light output effect of the other lamp bead), it makes it difficult for at least one of the lamp beads to accurately emit light of the required color temperature, and the accuracy of color temperature adjustment is relatively poor.
[0003] In view of this, it is necessary to design a color temperature adjustable light source device and a detection device, which can reduce interference and make color temperature adjustment more accurate by adjusting the light source and the detection device separately.
[0004] The above information is presented as background information only to assist with an understanding of the present disclosure and is not a determination or admission that any of the above may be applicable as prior art with respect to the present disclosure. Utility Model Content
[0005] The utility model provides a color temperature adjustable light source device and a detection device, which reduce interference and make color temperature adjustment more accurate by means of separate adjustment.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] A color temperature adjustable light source device includes a light emitting component and a detection camera, wherein the light emitting component includes:
[0008] A first light emitting unit includes a first light board emitting light in a first direction, a first beam splitter mounted on a light emitting side of the first light board, and a reflector for reflecting light emitted from the first beam splitter;
[0009] a second light emitting unit, arranged on a side of the first beam splitter away from the first lamp board, comprising a second lamp board emitting light in a second direction and a second beam splitter mounted on the light emitting side of the second lamp board, so that the light emitted by the second lamp board passes through the second beam splitter and is emitted to the surface of the workpiece, and the second direction is perpendicular to the first direction; the reflector reflects the light emitted by the first beam splitter to the second beam splitter, and the second lamp board reflects the light reflected by the reflector to the surface of the workpiece;
[0010] The image of the workpiece can be reflected by the second beam splitter to the reflector, and then reflected by the reflector and pass through the first beam splitter to enter the detection camera.
[0011] Optionally, the first light board includes a plurality of strip-shaped circuit boards arranged at intervals. The strip-shaped circuit board has opposite first mounting surface and second mounting surface. Warm-color lamp beads are mounted on the first mounting surface, and cold-color lamp beads are mounted on the second mounting surface.
[0012] The first light-emitting unit is further provided with a rotation adjustment device corresponding to each strip-shaped circuit board. The rotation adjustment device is used to adjust the rotation angle of the corresponding strip-shaped circuit board so that the warm-color lamp beads or the cold-color lamp beads emit light towards the first beam splitter.
[0013] Optionally, the first light-emitting unit further includes a first housing.
[0014] The rotation adjustment device includes a rotating shaft corresponding to each strip-shaped circuit board and a rotation driving device for adjusting the rotation angle of the rotating shaft. The rotating shaft is rotatably connected to the first housing; the rotation driving device is mounted on the first housing.
[0015] Optionally, the rotation driving device is a servo motor, and the driving shaft of the servo motor is in transmission connection with the rotating shaft.
[0016] Optionally, a slot is provided between the second light board and the second beam splitter. The slot is used to insert a transparent plate or a warm-color light-transmitting plate.
[0017] First grooves and second grooves are arranged at intervals on the groove wall of the slot. A first switch electrically connected to the rotation adjustment device is arranged in the first groove, and a second switch electrically connected to the rotation adjustment device is arranged in the second groove.
[0018] The transparent plate is provided with a protrusion corresponding to the first groove for pressing the first switch, and the warm-color light-transmitting plate is provided with a protrusion for pressing the second switch; when the first switch is pressed, the cold-color lamp beads face the first beam splitter, and when the second switch is pressed, the warm-color lamp beads face the first beam splitter.
[0019] Optionally, a first diffusion plate is provided between the first light board and the first beam splitter.
[0020] Optionally, a second diffusion plate is provided between the second light board and the second beam splitter.
[0021] Optionally, the first light emitting unit further comprises a first heat sink for cooling the first lamp board, the first heat sink comprising a cooling portion for contacting the back surface of the strip circuit board away from the first beam splitter;
[0022] The cooling portion is provided with an avoidance groove to avoid the warm-color lamp beads or the cool-color lamp beads, and the first light output unit also includes a telescopic device, which is used to drive the first heat sink to be close to the strip circuit board or away from the strip circuit board.
[0023] Optionally, the second light output unit further includes a second shell, and the second light board and the second beam splitter are both installed in the second shell.
[0024] A detection device comprises the color temperature adjustable light source device as described in any one of the above items.
[0025] Compared with the prior art, the present invention has the following beneficial effects:
[0026] The present invention provides a color temperature adjustable light source device and detection device. The adjustment between the first and second light panels is independent of each other, and the temperature of the first light panel cannot affect the light output effect of the second light panel. The light emitted by the first light panel passes through the first spectrometer, and is reflected by the reflector and the second spectrometer before being emitted toward the workpiece. At this time, the light emitted by the second light panel passes through the second spectrometer and is emitted toward the workpiece. The two light beams mix with each other to obtain the desired color temperature, so that the workpiece is better illuminated and the detection camera can take pictures of the workpiece under more appropriate lighting effects. In this embodiment, through a clever structural setting, the two light beams can be accurately mixed to form the desired color temperature, reducing the interference between the first and second light panels and improving the accuracy of color temperature adjustment.
[0027] The present invention has other features and advantages, which will be apparent from the accompanying drawings and subsequent detailed descriptions incorporated herein, or will be described in detail in the accompanying drawings and subsequent detailed descriptions incorporated herein, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0029] Figure 1 This is a schematic cross-sectional view of a color temperature adjustable light source device provided by an embodiment of the present utility model;
[0030] Figure 2 It is a schematic cross-sectional structure diagram of another color temperature adjustable light source device provided by an embodiment of the present utility model;
[0031] Figure 3 It is the Figure 2 enlarged schematic diagram of position A in the figure.
[0032] Reference numerals: 1, detection camera; 2, first light-emitting unit; 21, first light board; 211, strip-shaped circuit board; 212, warm-color lamp beads; 213, cold-color lamp beads; 22, first beam splitter; 23, reflector; 24, rotation adjustment device; 241, rotating shaft; 242, rotation driving device; 25, first housing; 251, slot; 261, first switch; 262, second switch; 27, first diffusion plate; 28, first radiator; 281, cooling part; 282, avoidance groove; 29, telescopic device; 3, second light-emitting unit; 31, second light board; 32, second beam splitter; 33, second diffusion plate; 34, second housing; 100, workpiece. Detailed implementation manners
[0033] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of the present application, the following is described in detail with reference to the specific embodiments listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.
[0034] Referring to "embodiment" herein means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0035] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which the present application belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present application.
[0036] In the description of the present application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " herein generally represents an "or" logical relationship between the associated objects before and after.
[0037] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary, or sequential relationship between these entities or operations.
[0038] Without further limitation, in this application, the expressions such as "comprising", "including", "having", or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product including the described elements. Thus, a process, method, or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method, or product.
[0039] The same as the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the recited number; expressions such as "above", "below", "within", etc. are understood to include the recited number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.
[0040] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the accompanying drawings. It is only for the convenience of describing the specific embodiments of this application or facilitating the understanding of the reader, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of this application.
[0041] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms such as "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.
[0042] Example 1
[0043] In view of the above-mentioned defects existing in the existing color temperature adjustable light source device, based on the rich practical experience and professional knowledge of the applicant in the design and manufacture of such products for many years, and in cooperation with the application of theory, the applicant actively conducts research and innovation in the hope of creating a technology that can solve the defects in the existing technology, making the color temperature adjustable light source device more practical. After continuous research, design, and repeated sample making and improvement, the applicant finally created the present utility model with practical value.
[0044] Please refer to Figures 1 to 3 , the embodiment of the present utility model provides a color temperature adjustable light source device, including a light emitting component and a detection camera 1. The light emitting component is used to illuminate the workpiece 100, and the detection camera 1 is used to take pictures and detect the workpiece under a set color temperature.
[0045] The light emitting component includes:
[0046] The first light emitting unit 2, including a first light board 21 that emits light in the first direction, a first beam splitter 22 installed on the light emitting side of the first light board 21, and a reflector 23 for reflecting the light emitted from the first beam splitter 22; it should be noted that the first light board 21 is used to emit light of the first set color temperature.
[0047] The second light emitting unit 3 is arranged on the side of the first beam splitter 22 away from the first light board 21, and includes a second light board 31 that emits light in the second direction and a second beam splitter 32 installed on the light emitting side of the second light board 31, so that the light emitted from the second light board 31 passes through the second beam splitter 32 and irradiates the surface of the workpiece. The second direction is perpendicular to the first direction; the second light board 31 is used to emit light of the second set color temperature.
[0048] The reflector 23 reflects the light emitted from the first beam splitter 22 to the second beam splitter 32, and the second light board 31 reflects the light reflected by the reflector 23 to the surface of the workpiece; the image of the workpiece can be reflected by the second beam splitter 32 to the reflector 23, and then reflected by the reflector 23 and pass through the first beam splitter 22 to enter the detection camera 1.
[0049] Specifically, in this embodiment, through a clever structure, the light emitted by the first light board 21 and the second light board 31 can be mixed with each other to realize the adjustment of the light emitting color temperature, and the first light board 21 and the second light board 31 are separated and independent from each other, avoiding being affected by current interference, temperature, etc., so that the final light emitting color temperature is more accurate.
[0050] It should also be noted that the first set color temperature light and the second set color temperature light can be specifically set according to actual needs, that is, the magnitudes of the energizing currents of the first light board 21 and the second light board 31 are respectively adjustable.
[0051] Optionally, the first light board 21 includes a plurality of strip circuit boards 211 spaced apart from each other, each strip circuit board 211 having a first mounting surface and a second mounting surface facing each other. Warm-colored lamp beads 212 are mounted on the first mounting surface, and cool-colored lamp beads 213 are mounted on the second mounting surface. Specifically, the warm-colored lamp beads 212 or the cool-colored lamp beads 213 can be adjusted to face the first beam splitter 22, thereby obtaining light emitting effects of different color temperatures. The first light emitting unit 2 is also provided with a rotation adjustment device 24 corresponding to each strip circuit board 211. The rotation adjustment device 24 is used to adjust the rotation angle of the corresponding strip circuit board 211 so that the warm-colored lamp beads 212 or the cool-colored lamp beads 213 emit light toward the first beam splitter 22. Generally, the rotation adjustment device 24 can drive the strip circuit board 211 to rotate 180° at a time.
[0052] Optionally, the first light output unit 2 further includes a first housing 25; the rotation adjustment device 24 includes a rotation axis 241 corresponding one-to-one with each strip circuit board 211 and a rotation drive device 242 for adjusting the rotation angle of the rotation axis 241, wherein the rotation axis 241 is rotatably connected to the first housing 25; the rotation drive device 242 is mounted on the first housing 25. The rotation drive device 242 can tilt the surface of the strip circuit board 211 relative to the first beam splitter 22, thereby changing and optimizing the light output effect. For example, the first mounting surfaces of two adjacent strip circuit boards 211 can be angled to each other, thereby emitting light in an octagonal structure.
[0053] Optionally, the rotation driving device 242 is a servo motor, and the driving shaft of the servo motor is in transmission connection with the rotation shaft 241 .
[0054] Optionally, a slot 251 is provided between the second light board 31 and the second dichroic mirror 32, and the slot 251 is used to insert a transparent plate or a warm-color light-transmitting plate; a first groove and a second groove are provided on the groove wall of the slot 251 at intervals, a first switch 261 electrically connected to the rotation adjustment device 24 is provided in the first groove, and a second switch 262 electrically connected to the rotation adjustment device 24 is provided in the second groove; the transparent plate is provided with a protrusion for pressing the first switch 261 corresponding to the first groove, and the warm-color light-transmitting plate is provided with a protrusion for pressing the second switch 262; when the first switch 261 is pressed, the cold-color lamp bead 213 faces the first dichroic mirror 22, and when the second switch 262 is pressed, the warm-color lamp bead 212 faces the first dichroic mirror 22.
[0055] Specifically, the color temperature adjustable light source device in this embodiment can change the light emitting effect of the second light emitting unit 3 by inserting a transparent plate or a warm-colored light-transmitting plate, and at the same time adjust the light emitting effect of the first light emitting unit 2, so as to quickly obtain the desired lighting effect.
[0056] Optionally, a first diffuser plate 27 is provided between the first lamp panel 21 and the first beam splitter 22 to improve the light output uniformity.
[0057] Optionally, a second diffuser plate 33 is provided between the second lamp panel 31 and the second beam splitter 32 to improve the light output uniformity.
[0058] Optionally, the first light output unit 2 further includes a first heat sink 28 for cooling the first lamp panel 21. The first heat sink 28 includes a cooling portion 281 for abutting against the back surface of the strip-shaped circuit board 211 away from the first beam splitter 22. The cooling portion 281 is provided with an avoidance groove 282 to avoid the warm-color lamp beads 212 or the cold-color lamp beads 213. The first light output unit 2 further includes a telescopic device 29 for driving the first heat sink 28 to approach and fit against the strip-shaped circuit board 211 or move away from the strip-shaped circuit board 211.
[0059] Specifically, when the strip-shaped circuit board 211 needs to rotate, the telescopic device 29 drives the first heat sink 28 to move away from the strip-shaped circuit board 211. After the rotation of the strip-shaped circuit board 211 ends, the telescopic device 29 drives the first heat sink 28 to approach and fit against the strip-shaped circuit board 211. It should be particularly noted that the telescopic device 29 is only applicable to the way that the strip-shaped circuit board 211 rotates 180° each time to ensure that the first heat sink 28 can fit against the strip-shaped circuit board 211 for heat dissipation.
[0060] Optionally, the second light output unit 3 further includes a second housing 34, and both the second lamp panel 31 and the second beam splitter 32 are installed in the second housing 34.
[0061] Embodiment 2
[0062] A detection device includes a color temperature adjustable light source device as described in Embodiment 1.
[0063] Finally, it should be noted that although the above embodiments have been described in the text of the specification and the drawings of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of this application and using the content recorded in the text of the specification and the drawings of this application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of this application.
Claims
1. A color temperature adjustable light source device, characterized in that, The invention comprises a light emitting component and a detection camera (1), wherein the light emitting component comprises: A first light emitting unit (2) comprises a first light board (21) emitting light in a first direction, a first beam splitter (22) mounted on the light emitting side of the first light board (21), and a reflector (23) for reflecting light emitted from the first beam splitter (22); A second light emitting unit (3) is arranged on a side of the first beam splitter (22) away from the first lamp board (21), comprising a second lamp board (31) emitting light in a second direction and a second beam splitter (32) installed on the light emitting side of the second lamp board (31), so that the light emitted by the second lamp board (31) passes through the second beam splitter (32) and is emitted to the surface of the workpiece, and the second direction is perpendicular to the first direction; the reflector (23) reflects the light emitted by the first beam splitter (22) to the second beam splitter (32), and the second lamp board (31) reflects the light reflected by the reflector (23) to the surface of the workpiece.
2. The color temperature adjustable light source device according to claim 1, characterized in that, The first lamp board (21) comprises a plurality of strip-shaped circuit boards (211) arranged at intervals, the strip-shaped circuit board (211) having a first mounting surface and a second mounting surface opposite to each other, the first mounting surface being mounted with warm-colored lamp beads (212), and the second mounting surface being mounted with cool-colored lamp beads (213); The first light emitting unit (2) is further provided with a rotation adjustment device (24) corresponding one-to-one to the strip circuit board (211), the rotation adjustment device (24) being used to adjust the rotation angle of the corresponding strip circuit board (211) so as to allow the warm-color lamp bead (212) or the cold-color lamp bead (213) to emit light toward the first spectroscope (22).
3. The color temperature adjustable light source device according to claim 2, characterized in that, The first light emitting unit (2) further includes a first housing (25); The rotation adjustment device (24) comprises a rotation shaft (241) corresponding one-to-one to the strip circuit board (211) and a rotation drive device (242) for adjusting the rotation angle of the rotation shaft (241), and the rotation shaft (241) is rotationally connected to the first shell (25); the rotation drive device (242) is mounted on the first shell (25).
4. The color temperature adjustable light source device according to claim 3, characterized in that, The rotation drive device (242) is a servo motor, and the drive shaft of the servo motor is in transmission connection with the rotation shaft (241).
5. The color temperature adjustable light source device according to claim 2, wherein A slot (251) is provided between the second light board (31) and the second beam splitter (32), and the slot (251) is used for inserting a transparent plate or a warm-color light-transmitting plate; A first groove and a second groove are provided on the groove wall of the slot (251) at intervals, a first switch (261) electrically connected to the rotation adjustment device (24) is provided in the first groove, and a second switch (262) electrically connected to the rotation adjustment device (24) is provided in the second groove; The transparent plate is provided with a protrusion corresponding to the first groove for pressing the first switch (261), and the warm-color light-transmitting plate is provided with a protrusion for pressing the second switch (262); when the first switch (261) is pressed, the cold-color lamp beads (213) face the first beam splitter (22), and when the second switch (262) is pressed, the warm-color lamp beads (212) face the first beam splitter (22).
6. The color temperature adjustable light source device according to claim 1, characterized in that, A first diffusion plate (27) is arranged between the first lamp board (21) and the first beam splitter (22).
7. The color temperature adjustable light source device according to claim 1, characterized in that, A second diffusion plate (33) is arranged between the second lamp board (31) and the second beam splitter (32).
8. The color temperature adjustable light source device according to claim 2, wherein The first light-emitting unit (2) further includes a first radiator (28) for cooling the first lamp board (21), and the first radiator (28) includes a cooling portion (281) for abutting against the back surface of the strip-shaped circuit board (211) away from the first beam splitter (22); The cooling portion (281) is provided with an avoidance groove (282) to avoid the warm-color lamp beads (212) or the cold-color lamp beads (213), and the first light-emitting unit (2) further includes a telescopic device (29) for driving the first radiator (28) to approach and fit the strip-shaped circuit board (211) or move away from the strip-shaped circuit board (211).
9. The color temperature adjustable light source device according to claim 1, characterized in that, The second light-emitting unit (3) further includes a second housing (34), and both the second lamp board (31) and the second beam splitter (32) are installed in the second housing (34).
10. A detection device, characterized in that, It includes a color temperature adjustable light source device as described in any one of claims 1 to 9.