Variable-angle uniform collimation light source device

Abstract

The utility model relates to the technical field of collimation light sources, and discloses a variable-angle uniform collimation light source device which comprises a bottom plate, a reinforcing rib is fixedly connected between the bottom plate and a vertical plate, a stepping motor is arranged on the vertical plate, the side wall of the vertical plate is fixedly connected with an arc-shaped guide rail, the side wall of the vertical plate is fixedly connected with a rack fixing block, and the rack fixing block is fixedly connected with the arc-shaped guide rail. A sliding block mounting plate is arranged on the vertical plate, and a motor mounting plate is fixedly connected to the sliding block mounting plate; according to the utility model, the technical problem that a uniform collimation light source cannot be obtained when the specular reflectance of a display screen of a mobile electronic product is tested is solved, and on the basis, a special mechanism for realizing a variable angle by introducing a light source is introduced, so that the uniform collimation light source with the variable angle is formed; and great help is provided for actual display screen production and testing.

Description

Technical Field

[0001] This utility model relates to the field of collimation light source technology, specifically a variable-angle uniform collimation light source device. Background Technology

[0002] A variable-angle uniform collimation light source is an optical technology. It primarily involves precise control of the light source, enabling the alteration of the light's exit angle. In terms of collimation, it transforms diverging light rays into parallel rays, ensuring a more consistent direction of light propagation. Furthermore, it maintains a uniform distribution of light intensity within a certain range, preventing issues such as a bright center and dark edges in the light spot. This technology has important applications in various fields, including optical instruments, lighting systems, and optical communications. For instance, in microscope illumination, it provides a uniform and bright field of view, facilitating the observation of sample details.

[0003] When using current devices, if the light source itself has poor characteristics, the emission angle is not adjustable, the divergence is large, and it is difficult to achieve collimation, the display screen of electronic products cannot obtain a uniform collimated light source when testing its specular reflectivity. To address this, we propose a variable angle uniform collimated light source device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a variable-angle uniform collimation light source device, which solves the problem that when using current devices, if the light source itself has poor characteristics, the emission angle is not adjustable, the divergence is large, and it is difficult to achieve collimation, resulting in electronic products' displays not obtaining a uniform collimated light source when testing their specular reflectivity.

[0005] To achieve the aforementioned objectives, this utility model provides the following technical solution: a variable-angle uniform collimation light source device, comprising a base plate, a reinforcing rib fixedly connected between the base plate and a vertical plate, a stepper motor mounted on the vertical plate, an arc-shaped guide rail fixedly connected to the side wall of the vertical plate, a rack fixing block fixedly connected to the side wall of the vertical plate, a slider mounting plate mounted on the vertical plate, a motor mounting plate fixedly connected to the slider mounting plate, a motor transition plate mounted on the motor mounting plate, a stepper motor mounted on the motor mounting plate, a gear at the output end of the stepper motor, and a flexible rack mounted on the rack fixing block, the flexible rack meshing with the gear.

[0006] Preferably, a motor transition plate is mounted on the slider mounting plate, and the stepper motor is mounted on the motor transition plate.

[0007] Preferably, an adjusting block is fixedly connected to the side wall of the slider mounting plate, and an adjusting bolt is installed on the adjusting block.

[0008] Preferably, a fixing block is fixedly connected to the side wall of the upright plate, and the fixing block is provided with a limiting screw.

[0009] Preferably, a sensor is fixedly connected to the side wall of the upright plate, a light rod fixing block is fixedly connected to the top of the slider mounting plate, a light rod is installed on the light rod fixing block, and an integrating sphere fixing block is fixedly connected to the side wall of the light rod.

[0010] Preferably, the integrating sphere is provided on the integrating sphere fixing block, and a collimating lens is installed at the bottom of the integrating sphere.

[0011] Preferably, the stepper motor is provided with a coupling, the coupling is provided with a connecting shaft, and a sensing plate is fixedly connected to the side wall of the slider mounting plate.

[0012] Compared with the prior art, this utility model provides a variable-angle uniform collimation light source device, which has the following beneficial effects:

[0013] 1. This variable-angle uniform collimated light source device solves the technical problem of not being able to obtain a uniform collimated light source when testing the specular reflectivity of mobile electronic product displays. Based on this, a special mechanism for realizing variable angle light source is introduced, forming a variable-angle uniform collimated light source, which greatly helps the actual production and testing of displays.

[0014] 2. This variable-angle uniform collimation light source device, with its innovative design concept, optimizes the equipment architecture and component composition. Its main components are simplified and easy to process and install, such as the base plate, upright plate, reinforcing ribs, curved guide rail, rack fixing block, sensor, fixing block, slider mounting plate, motor mounting plate, transition plate, stepper motor, and flexible rack. This simple and efficient design reduces redundant and complex structures and high-priced components, lowering manufacturing and maintenance costs. Simultaneously, the optimized mechanical transmission and control system improves equipment operating efficiency and stability, reduces additional expenses caused by malfunctions and debugging, significantly reduces testing costs, and gives enterprises stronger market cost competitiveness; it creatively integrates the technological advantages of integrating sphere and collimating lens group. The integrating sphere can effectively homogenize light, resolving the problem of uneven light intensity from the light source, providing high-quality incident light for the subsequent collimating lens; the collimating lens group can convert the homogenized light from the integrating sphere into parallel light, achieving the collimation effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall side view structure of this utility model.

[0017] In the diagram: 1. Base plate; 2. Vertical plate; 3. Reinforcing rib; 4. Arc-shaped guide rail; 5. Rack fixing block; 6. Slider mounting plate; 7. Motor mounting plate; 8. Motor transition plate; 9. Stepper motor; 10. Adjusting block; 11. Adjusting bolt; 12. Fixing block; 13. Limit screw; 14. Flexible rack; 15. Sensor; 16. Light rod fixing block; 17. Light rod; 18. Integrating sphere fixing block; 19. Integrating sphere; 20. Collimating lens; 21. Optical fiber; 22. Adjusting screw mounting block; 23. Arc-shaped slide; 24. Sensing plate; 25. Gear; 26. Connecting shaft; 27. Coupling. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-2 A variable-angle uniform collimation light source device includes a base plate 1, a reinforcing rib 3 fixedly connected between the base plate 1 and a vertical plate 2, a stepper motor 9 mounted on the vertical plate 2, an arc-shaped guide rail 4 fixedly connected to the side wall of the vertical plate 2, a rack fixing block 5 fixedly connected to the side wall of the vertical plate 2, a slider mounting plate 6 mounted on the vertical plate 2, a motor mounting plate 7 fixedly connected to the slider mounting plate 6, a motor transition plate 8 mounted on the motor mounting plate 7, and a stepper motor 9 mounted on the motor mounting plate 7. The output end of the stepper motor 9 has a gear 25, and a flexible rack 14 is mounted on the rack fixing block 5, meshing with the gear 25. The base plate 1 serves as a basic support component, and its connection to the vertical plate 2 is reinforced by the reinforcing rib 3, ensuring the structural stability of the entire device. The stepper motor 9 mounted on the vertical plate 2 serves as a power source, and its output gear 25 meshes with the flexible rack 14 on the rack fixing block 5. When the stepper motor 9 receives a control signal and rotates, the gear 25 moves in an arc along the flexible rack 14, causing the motor mounting plate 7 and the slider mounting plate 6 connected to it to move along the arc-shaped guide rail 4.

[0020] The slider mounting plate 6 is equipped with a motor transition plate 8, and the stepper motor 9 is mounted on the motor transition plate 8. The slider mounting plate 6 serves as an intermediate connecting component, providing a mounting platform for the motor transition plate 8. The stepper motor 9 is mounted on the motor transition plate 8, making the motor mounting position more flexible and facilitating collaboration with other components.

[0021] The slider mounting plate 6 is fixedly connected to the side wall of the adjustment block 10, and the adjustment block 10 is equipped with the adjustment bolt 11. The adjustment block 10 is fixed to the side wall of the slider mounting plate 6. By rotating the adjustment bolt 11, the motor transition plate 8 can be pushed or pulled, thereby realizing the fine adjustment of the position of the stepper motor 9.

[0022] A fixing block 12 is fixedly connected to the side wall of the upright plate 2, and a limiting screw 13 is provided on the fixing block 12. The fixing block 12 is installed on the side wall of the upright plate 2, and the limiting screw 13 is installed on the fixing block 12. When the slider mounting plate 6 and its components move on the arc-shaped guide rail 4, the limiting screw 13 acts as a hard limiting device.

[0023] A sensor 15 is fixedly connected to the side wall of the upright plate 2. A light rod fixing block 16 is fixedly connected to the top of the slider mounting plate 6. A light rod 17 is installed on the light rod fixing block 16. An integrating sphere fixing block 18 is fixedly connected to the side wall of the light rod 17. An integrating sphere 19 is provided on the integrating sphere fixing block 18. A collimating lens 20 is installed at the bottom of the integrating sphere 19. A coupling 27 is provided on the stepper motor 9. A connecting shaft 26 is provided on the coupling 27. A sensing plate 24 is fixedly connected to the side wall of the slider mounting plate 6. The sensor 15 is used for limit sensing. The light emitted by the cold light source is introduced into the integrating sphere 19 through the optical fiber 21. The integrating sphere 19 evens out the light. The light then shines into the lens group through the opening of the integrating sphere 19 to obtain a collimated light source. The collimated light source moves in an arc on the arc. By accurately calculating the arc angle, the accurate angle of the collimated light source shining on the product can be calculated, thereby realizing a variable angle light source.

[0024] Structural Description: Base Plate 1: As the foundation platform of the entire device, it bears the weight of other components, provides stable bottom support for the device, and ensures the relative position stability of each component during operation.

[0025] Vertical plate 2: Vertically installed on base plate 1, it serves as the mounting carrier for other components. Together with the base plate, it forms the main frame structure of the device, providing vertical support and positioning reference for the installation and collaborative work of subsequent components.

[0026] Reinforcing rib 3: Connects the base plate 1 and the vertical plate 2. Its main function is to enhance the strength and stability of the entire structure and prevent loosening or deformation between the base plate and the vertical plate when the device is in operation or subjected to external forces, thereby ensuring that the installation accuracy and movement accuracy of each component are not affected.

[0027] Arc-shaped guide rail 4: Fixed to the side wall of the upright plate 2, it is arc-shaped and provides a precise arc-shaped motion track for the slider mounting plate 6. This ensures that the components mounted on the slider mounting plate can be smoothly and accurately adjusted along the predetermined arc trajectory, thereby realizing variable control of the light source angle.

[0028] Rack fixing block 5: Installed on the vertical plate 2, it is used to fix the flexible rack 14, providing stable support and guidance for the meshing motion of the gear 25, ensuring that the gear 25 can accurately make arc motion along the flexible rack 14 under the drive of the stepper motor 9, thereby driving the entire angle adjustment mechanism to work normally and realize the precise adjustment of the light source angle.

[0029] Slider mounting plate 6: It works with the arc-shaped guide rail 4 and can slide along the arc-shaped guide rail. It is an intermediate platform connecting multiple key components such as motor mounting plate 7 and light rod fixing block 16. It integrates the movement of each component together. By sliding on the arc-shaped guide rail, it realizes the overall angle change of the light source and its related components, ensuring that the light source can accurately illuminate different positions and angles on the product being tested.

[0030] Motor mounting plate 7: Mounted on slider mounting plate 6, it provides a stable mounting position for stepper motor 9, enabling it to work in conjunction with slider mounting plate 6 and other related components, ensuring the stability and reliability of the motor during operation, and facilitating the transmission of motor power and the linkage of angle adjustment mechanism.

[0031] Motor transition plate 8: Located between motor mounting plate 7 and stepper motor 9, it serves to buffer and optimize motor installation, reduce the impact of vibration generated during motor operation on other components, improve the overall smoothness of the device's operation and the accuracy of angle adjustment, and ensure the stability and accuracy of light source angle changes.

[0032] Stepper motor 9: As the power source of the device, it receives external control signals and precisely controls the rotation angle and speed of its output shaft, thereby driving the gear 25 to rotate and realize the meshing motion with the flexible rack 14. This drives the slider mounting plate 6 and its components to adjust the angle along the arc-shaped guide rail 4, providing power support and precise angle control capability for realizing a variable angle uniform collimated light source.

[0033] Flexible rack 14: meshes with gear 25 and is mounted on rack fixing block 5. Its flexible design can adapt to the curvature change of arc guide rail 4, ensuring that good meshing is always maintained when gear 25 makes arc motion. It converts the rotational motion of stepper motor 9 into the arc translational motion of slider mounting plate 6, thereby realizing continuous variable adjustment of light source angle and meeting the diverse needs of light source angle under different test scenarios.

[0034] Gear 25: Installed at the output end of stepper motor 9, it meshes tightly with flexible rack 14. Driven by the motor, it rolls along the flexible rack, transmitting the motor's rotational motion to slider mounting plate 6, which in turn drives the entire angle adjustment mechanism. Its precision and stability directly affect the accuracy and reliability of light source angle adjustment, and it is one of the key components for achieving precise angle control.

[0035] Connecting shaft 26: Connected to stepper motor 9 via coupling 27, the rotational power of the motor is transmitted to other related components, ensuring the smoothness and continuity of power transmission, which helps to improve the working efficiency and reliability of the entire transmission system, and ensures that the light source angle adjustment mechanism can accurately and quickly respond to the motor's drive command to achieve precise angle changes.

[0036] Coupling 27: Connects the stepper motor 9 and the connecting shaft 26, and plays a role in compensating for radial, axial and angular deviations between the motor output shaft and the connecting shaft, ensuring stable power transmission between the two, reducing the impact of factors such as motor vibration and installation errors on the transmission system, improving the operational stability and reliability of the entire device, and ensuring the accuracy and consistency of the light source angle adjustment.

[0037] Adjustment block 10: Fixed to the side wall of slider mounting plate 6, providing a mounting base for adjustment bolt 11. Used in conjunction with adjustment bolt, it is used to fine-tune the position of motor transition plate 8, thereby precisely adjusting the meshing state of stepper motor 9 and flexible rack 14, ensuring the accuracy and stability of transmission, and ensuring that the motor can stably and efficiently drive the movement of related components during the adjustment of light source angle, avoiding motion errors and malfunctions caused by poor meshing of gears and racks.

[0038] Adjusting bolt 11: Installed on adjusting block 10, rotating the adjusting bolt changes its extension length within the adjusting block, thereby pushing or pulling the motor transition plate 8 to achieve fine adjustment of the stepper motor 9 position. This fine-tuning function is crucial for maintaining good meshing between the motor and the flexible rack during installation, commissioning, and long-term use of the device. It effectively improves the accuracy and reliability of light source angle adjustment and reduces angle errors caused by wear or loosening of mechanical parts.

[0039] Fixed block 12: Installed on the side wall of the upright plate 2, serving as the mounting carrier for the limit screw 13. Together with the limit screw, it forms a hard limit anti-collision device. During the operation of the device, when the movement of the slider mounting plate 6 and its components approaches the limit position, the limit screw 13 can contact the moving component to prevent it from continuing to move. This prevents collision damage caused by components exceeding the safe operating range due to unexpected situations such as control system failure or motor malfunction. It protects the mechanical structure integrity of the device and the normal operation of each component, ensuring the safety and continuity of the testing work.

[0040] Limit screw 13: Installed on the fixed block 12, it limits the range of motion of the slider mounting plate 6 and its components, serving as the last line of defense for the device. When an abnormality occurs in the device and the moving parts may exceed the normal operating range, the limit screw 13 can promptly stop its further movement, avoiding hard collisions between components, reducing the risk of equipment damage, ensuring the stability and reliability of the device, and also helping to maintain a stable output of the light source, ensuring the accuracy and consistency of test results.

[0041] Sensor 15: Installed on the side wall of the upright plate 2, it is used to detect the position information of the slider mounting plate 6. During the operation of the device, the sensor obtains the position status of the light source in real time by sensing the sensing element 24 on the slider mounting plate 6, and feeds the signal back to the control system. Based on the information fed back by the sensor, the control system precisely controls the operation of the stepper motor 9 to achieve precise closed-loop control of the light source angle, ensuring that the light source can accurately reach the predetermined position and angle, meeting the high precision requirements of the light source angle for test objects such as mobile electronic product displays, and improving the accuracy and reliability of test data.

[0042] The light rod fixing block 16 is installed on the top of the slider mounting plate 6 to fix the light rod 17, providing stable support and precise installation position for the light rod. This ensures that the light rod can maintain a stable posture and position during the device angle adjustment process, and provides a reliable foundation for the installation of subsequent optical components such as integrating sphere fixing block 18 and integrating sphere 19 and for light transmission. It ensures that the light can be accurately transmitted between various optical components without being disturbed by external factors, and ensures the uniformity and collimation of the light source.

[0043] The light rod 17 is fixed at one end to the light rod fixing block 16, serving as a support and conduction component. An integrating sphere fixing block 18 is mounted on its side wall, providing a stable mounting position and suitable angle for the integrating sphere 19. The light rod ensures that the integrating sphere remains relatively stable during device movement, free from external interference. This ensures uniform mixing of light within the integrating sphere and unaffected subsequent collimation processes, thereby improving the quality and stability of the light source and providing reliable light source conditions for specular reflectivity testing of mobile electronic product displays.

[0044] Integrating sphere fixing block 18: Installed on the side wall of the optical rod 17, it is used to firmly fix the integrating sphere 19, ensuring the stability and positional accuracy of the integrating sphere during device operation. The design of the integrating sphere fixing block ensures accurate relative positioning between the integrating sphere and other optical components such as the optical rod and collimating lens, allowing light to smoothly enter the integrating sphere for homogenization, then exit the integrating sphere and be collimated by the collimating lens, ultimately obtaining a high-quality, uniformly collimated light source that meets the stringent requirements of testing for the optical performance of the light source.

[0045] Integrating sphere 19: Fixed to the integrating sphere fixing block 18, it is a key component for achieving light source homogenization. Light emitted from the cold light source is introduced into the integrating sphere 19 through the optical fiber 21. The integrating sphere utilizes its internal diffuse reflection coating and special geometry to fully disperse and uniformly mix the light, achieving a uniform distribution of light intensity within the sphere. The light homogenized by the integrating sphere exits through its opening, providing high-quality incident light for the subsequent collimating lens 20. This ensures the uniformity of the light source, avoids uneven phenomena such as a bright center and dark edges in the light spot, and improves the accuracy and reliability of the test results. This is especially important for test objects such as mobile electronic product displays, which have high requirements for light uniformity.

[0046] Collimating lens 20: Installed at the bottom of integrating sphere 19, it receives the homogenized light from integrating sphere 19 and, based on the principle of optical refraction, converges and adjusts the light into parallel light for emission, thus achieving the collimation function of the light source. The accuracy and quality of the collimating lens directly affect the parallelism and uniformity of light intensity distribution of the final collimated light source. For specular reflectivity testing of mobile electronic product displays, a precise collimated light source ensures that light illuminates the display surface at the same angle and intensity, improving the comparability and accuracy of test data and helping to more accurately evaluate the optical performance and quality of the display.

[0047] Fiber optic cable 21: Used to transmit light emitted from the cold light source into the integrating sphere 19. It possesses excellent flexibility and light transmission performance, enabling accurate introduction of light into the integrating sphere without altering its properties. This provides stable incident light for the homogenization process of the integrating sphere, ensuring the normal operation of the entire light source system. Simultaneously, the use of fiber optic cable facilitates the separation of the cold light source from the main body of the device, reducing the impact of heat generation from the light source on other components, improving the stability and reliability of the device, and allowing for the selection of different types and parameters of cold light sources according to actual needs, enhancing the versatility and adaptability of the device.

[0048] Adjusting screw mounting block 22: Although its specific function is not described in detail in the text, it is speculated that it may be used to install other adjusting screws or as an auxiliary mounting structure for a certain component. By adjusting the screws, certain performance parameters of the device can be further optimized or the position and orientation of certain components can be finely adjusted to meet more precise testing requirements or adapt to different working environments, thereby improving the overall performance and flexibility of the device.

[0049] Arc-shaped slide 23: Its function is not described in detail in the text, but judging from the name, it may work in conjunction with the arc-shaped guide rail 4 to provide additional support or guidance for certain components, further improving the stability and accuracy of the components during arc-shaped movement, ensuring that the entire device can operate more smoothly and accurately during angle adjustment, reducing shaking and deviation during movement, ensuring that the light source can accurately illuminate the product under test, and improving the accuracy and reliability of the test.

[0050] Sensing element 24: Installed on the side wall of the slider mounting plate 6, it works in conjunction with the sensor 15 as the sensor's sensing target. When the slider mounting plate 6 moves on the arc-shaped guide rail 4, the sensing element 24 moves accordingly. Its position change is detected in real time by the sensor 15, which transmits the signal to the control system. This enables precise monitoring and control of the position of the slider mounting plate 6, thereby precisely controlling the angle position of the light source. This ensures the accuracy and reliability of the light source angle adjustment, providing stable and precise light source conditions for test objects such as mobile electronic product displays, and improving the quality and reliability of test data.

[0051] Working principle

[0052] The length of the light rod 17 is adjusted so that the collimating lens 20 is aligned with the center of the product being measured. The arc-shaped guide rail 4 and the flexible rack 14 are concentrically engaged. The stepper motor 9 and the reducer drive the gear 25 to make an arc motion. During the motion, the sensor 15 is sensed and the motion stops. The sensor 15 has three points: positive, negative and origin. The adjustment block 10 is equipped with an adjustment bolt 11 to satisfy the meshing of the gear 25. The slider mounting plate 6 is equipped with a sensing plate 24. The limit screw 13 is used for hard limit anti-collision. The adjustment bolt 11 is used to adjust the position of the stepper motor 9 to mesh with the flexible rack 14. The sensor 15 is used for limit sensing. The light emitted by the cold light source is introduced into the integrating sphere 19 through the optical fiber 21. The integrating sphere 19 evens out the light and then shines into the lens group through the opening of the integrating sphere 19 to obtain a collimated light source. The collimated light source makes an arc motion on the arc. By accurately calculating the arc angle, the accurate angle of the collimated light source shining on the product can be calculated, thereby realizing a variable angle light source.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable angle uniform collimation light source device, comprising a bottom plate (1), a reinforcing rib (3) is fixedly connected between the bottom plate (1) and a vertical plate (2), a stepping motor (9) is arranged on the vertical plate (2), characterized in that, Also include: The side wall of the vertical plate (2) is fixedly connected with an arc-shaped guide rail (4), the side wall of the vertical plate (2) is fixedly connected with a rack fixed block (5), the vertical plate (2) is provided with a sliding block mounting plate (6), the sliding block mounting plate (6) is fixedly connected with a motor mounting plate (7), the motor mounting plate (7) is installed with a motor transition plate (8), the motor mounting plate (7) is installed with a stepping motor (9), the output end of the stepping motor (9) is provided with a gear (25), the flexible rack (14) is installed on the rack fixed block (5), and the flexible rack (14) is engaged with the gear (25).

2. A variable angle uniform collimated light source device according to claim 1, wherein: The sliding block mounting plate (6) is installed with a motor transition plate (8), and the stepping motor (9) is installed on the motor transition plate (8).

3. A variable angle uniform collimated light source device according to claim 2, wherein: The side wall of the sliding block mounting plate (6) is fixedly connected with an adjusting block (10), and the adjusting block (10) is installed with an adjusting bolt (11).

4. The variable angle uniform collimated light source of claim 1, wherein: The side wall of the vertical plate (2) is fixedly connected with a fixed block (12), and the fixed block (12) is provided with a limiting screw (13).

5. The variable angle uniform collimated light source of claim 1, wherein: The side wall of the vertical plate (2) is fixedly connected with a sensor (15), the top of the sliding block mounting plate (6) is fixedly connected with a light rod fixed block (16), the light rod fixed block (16) is installed with a light rod (17), and the side wall of the light rod (17) is fixedly connected with an integrating sphere fixed block (18).

6. A variable angle uniform collimated light source device according to claim 5, wherein: The integrating sphere fixed block (18) is provided with an integrating sphere (19), and the bottom of the integrating sphere (19) is installed with a collimating mirror (20).

7. The variable angle uniform collimated light source of claim 1, wherein: The stepping motor (9) is provided with a shaft coupling (27), the shaft coupling (27) is provided with a connecting shaft (26), and the side wall of the sliding block mounting plate (6) is fixedly connected with a sensing sheet (24).

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