Illumination detection device for illumination light spot of laser illumination lens

Abstract

The utility model relates to the technical field of laser illumination, in particular to an illumination detection device for illumination spots of a laser illumination lens. Comprising a detection table, a supporting assembly used for supporting a lens is installed on the detection table, a measuring assembly used for measuring illumination of the lens is installed on the detection table, a shielding assembly used for shielding light of the lens is installed on the detection table, and the shielding assembly is located between the supporting assembly and the measuring assembly; the shielding assembly comprises a light shielding plate, a light transmitting hole is formed in the light shielding plate, and an adjusting plate is slidably connected to the side, close to the supporting assembly, of the light shielding plate. According to the utility model, through the arrangement of the light shielding plate, in an environmental space in the target surface direction, only an area which takes an illumination measurement point as a circle center and has a diameter of not more than 0.5 m is illuminated, and other positions do not have any illumination light, so that the generation of reflection stray light is effectively avoided, and the illumination measurement precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser lighting, and particularly relates to an illuminance detection device for a laser lighting spot of a laser lighting lens. Background Art

[0002] In the state of the shortest focal length, a military laser lighting lens can project a laser lighting spot with a diameter of not less than 5 m at a distance of 10 m to 20 m. In order to evaluate the performance of the laser lighting lens, it is necessary to measure the illuminance of the laser lighting spot in this state. The conventional measurement method is to vertically project the laser lighting spot on the indoor wall acting as a target surface at a specified distance in a dark environment, and detect the illuminance point by point at each measurement point at a specified position along the horizontal line passing through the center of the lighting spot on the target surface. The disadvantage of this measurement method is that, for the convenience of personnel operation, the ground clearance of the optical axis of the laser lens, the center of the lighting spot, and the illuminance measurement point is about 1 m, and the radius of the lighting spot is not less than 2.5 m. Part of the light rays exceed the target surface and irradiate on non-target surface areas such as the ground and ceiling of the detection room to form reflected stray light, which interferes with the illuminance measurement on the target surface and reduces the measurement accuracy. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an illuminance detection device for a laser lighting spot of a laser lighting lens, which can effectively avoid the generation of reflected stray light and improve the accuracy of illuminance measurement by arranging a light-shielding plate, so as to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: an illuminance detection device for a laser lighting spot of a laser lighting lens, including a detection table, a support assembly for supporting the lens is installed on the detection table, a measurement assembly for measuring the illuminance of the lens is installed on the detection table, a shielding assembly for shielding the light rays of the lens is installed on the detection table, and the shielding assembly is located between the support assembly and the measurement assembly;

[0005] The shielding assembly includes a light-shielding plate, a light-transmitting hole is opened on the light-shielding plate, an adjusting plate is slidably connected to one side of the light-shielding plate close to the support assembly, a plurality of groups of light-passing holes are opened on the adjusting plate, the diameters of the plurality of groups of light-passing holes are different, and the plurality of groups of light-passing holes are all used in cooperation with the light-transmitting hole. A moving mechanism for adjusting the position of the light-shielding plate is installed at the bottom of the light-shielding plate, the moving mechanism is installed on the detection table, and an adjusting mechanism for adjusting the position of the adjusting plate is installed on the light-shielding plate.

[0006] Further, the moving mechanism includes a light-shielding plate seat, the light-shielding plate seat is installed on the detection table, a moving groove is opened on the light-shielding plate seat, and a threaded rod is rotatably connected in the moving groove.

[0007] Further, a moving block is slidably connected in the moving groove, the moving block is threadedly connected to the threaded rod, and the moving block is installed at the bottom of the light-shielding plate.

[0008] Further, a first motor is installed at one end of the light-shielding plate seat, an output end of the first motor penetrates into the moving groove, and the output end of the first motor is drivingly connected to one end of the threaded rod.

[0009] Further, the adjusting mechanism includes a second motor, the second motor is installed on a side of the light-shielding plate away from the adjusting plate, an output end of the second motor penetrates the light-shielding plate, and a gear is drivingly connected to the output end of the second motor.

[0010] Further, the adjusting mechanism further includes a rack, the rack is installed at the bottom of the adjusting plate, and the rack meshes with the gear.

[0011] Further, the supporting assembly includes a lens bracket, the lens bracket is installed on the detection table, and a lens to be measured is installed on the lens bracket.

[0012] Further, the measuring assembly includes a target surface, the target surface is installed on the detection table, and multiple groups of illuminance measurement points are arranged on the target surface.

[0013] The beneficial effects of the present utility model are as follows:

[0014] With the setting of the light-shielding plate in the present utility model, in the environmental space in the direction of the target surface, only the area with a diameter not greater than 0.5 m centered on the illuminance measurement point is illuminated, and there is no illumination light at other positions, thereby effectively avoiding the generation of reflected stray light and improving the accuracy of illuminance measurement.

[0015] Other features and advantages of the present utility model will be described in the following description of the specification, and some of them will be obvious from the description of the specification, or can be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures pointed out in the specification and the drawings. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Shows a schematic structural diagram according to an embodiment of the present utility model;

[0018] Figure 2 Shows a schematic structural diagram of a light-shielding component according to an embodiment of the present invention;

[0019] Figure 3 Shows a schematic structural diagram of a moving mechanism according to an embodiment of the present invention.

[0020] In the figure: 110, detection table; 210, lens bracket; 220, lens to be measured; 310, target surface; 320, illuminance measurement point; 410, light-shielding plate seat; 420, moving groove; 430, threaded rod; 440, moving block; 450, first motor; 510, light-shielding plate; 520, light-transmitting hole; 610, adjusting plate; 620, light-passing hole; 630, rack; 640, second motor; 650, gear. Specific embodiments

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-3 , the present invention provides a technical solution: an illuminance detection device for the illumination spot of a laser illumination lens. It includes a detection table 110, on which a support component for supporting the lens is installed, a measurement component for measuring the illuminance of the lens is installed, and a light-shielding component for blocking the light of the lens is installed. The light-shielding component is located between the support component and the measurement component;

[0023] The light-shielding component includes a light-shielding plate 510, on which a light-transmitting hole 520 is provided. A sliding connection is provided between the side of the light-shielding plate 510 close to the support component and an adjusting plate 610. Multiple groups of light-passing holes 620 are provided on the adjusting plate 610. The diameters of multiple groups of the light-passing holes 620 are all different, and multiple groups of the light-passing holes 620 are all used in cooperation with the light-transmitting hole 520. A moving mechanism for adjusting the position of the light-shielding plate 510 is installed at the bottom of the light-shielding plate 510. The moving mechanism is installed on the detection table 110, and an adjusting mechanism for adjusting the position of the adjusting plate 610 is installed on the light-shielding plate 510.

[0024] A light shield 510 is provided, and other light beams are completely blocked by the light shield 510, thus avoiding the generation of reflected stray light and improving the accuracy of illuminance measurement. A light-transmitting hole 520 is provided to facilitate the light beam to pass through the light shield and irradiate onto the measurement component for illuminance measurement.

[0025] The moving mechanism includes a light shield seat 410 which is installed on the detection table 110. A moving groove 420 is provided on the light shield seat 410, and a threaded rod 430 is rotatably connected in the moving groove 420.

[0026] A moving block 440 is slidably connected in the moving groove 420. The moving block 440 is threadedly connected to the threaded rod 430, and the moving block 440 is installed at the bottom of the light shield 510.

[0027] One end of the light shield seat 410 is installed with a first motor 450. The output end of the first motor 450 penetrates into the moving groove 420, and the output end of the first motor 450 is drivingly connected to one end of the threaded rod 430.

[0028] The first motor 450 drives the threaded rod 430 to rotate. The threaded rod 430 drives the moving block 440 to move, so that the moving block 440 drives the light shield 510 to move, and each illuminance measurement point in the horizontal direction is illuminated one by one to implement accurate illuminance measurement.

[0029] The adjusting mechanism includes a second motor 640 which is installed on the side of the light shield 510 away from the adjusting plate 610. The output end of the second motor 640 penetrates through the light shield 510, and a gear 650 is drivingly connected to the output end of the second motor 640.

[0030] The adjusting mechanism further includes a rack 630 which is installed at the bottom of the adjusting plate 610, and the rack 630 meshes with the gear 650.

[0031] The second motor 640 drives the gear 650 to rotate. The gear 650 drives the adjusting plate 610 to move through meshing with the rack 630, thereby adjusting the light-transmitting hole 620 on the adjusting plate 610. When the light shield 510 moves, part of the light of the illumination spot of the measured lens 220 is projected onto a certain specified illuminance measurement point on the target surface 310 and the diameter of the illuminated area is not greater than 0.5 m.

[0032] The supporting component includes a lens bracket 210 which is installed on the detection table 110, and a measured lens 220 is installed on the lens bracket 210.

[0033] The measurement component includes a target surface 310, which is mounted on the detection table 110, and multiple groups of illuminance measurement points 320 are arranged on the target surface 310.

[0034] The centers of the lens under test 220, the light-transmitting hole 520, the multiple groups of illuminance measurement points 320, and the light-passing hole 620 are all located on the same horizontal line.

[0035] Specifically, the internal electrical connection structures of the lens under test 220, the first motor 450, and the second motor 640 are well-known to those skilled in the art, and will not be elaborated here. All electrical components in this application are externally connected to a power supply when in use.

[0036] The circuits, electrical components, and modules involved are all prior art and can be fully implemented by those skilled in the art without further explanation. The content protected by this utility model does not involve improvements to software.

[0037] The control method of this application document is automatically controlled by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and belongs to the common general knowledge in the art. Moreover, this application document mainly aims to protect mechanical devices, so the control method and circuit connection will not be explained in detail in this application document.

[0038] Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An illumination intensity detection device for the illumination spot of a laser illumination lens, characterized in that: It includes a detection table (110), on which a support assembly for supporting a lens is installed, a measurement assembly for measuring the illuminance of the lens is installed, and an occlusion assembly for occluding the light of the lens is installed. The occlusion assembly is located between the support assembly and the measurement assembly; The occlusion assembly includes a light-shielding plate (510), on which a light-transmitting hole (520) is formed. A regulating plate (610) is slidably connected to the side of the light-shielding plate (510) close to the support assembly. A plurality of light-passing holes (620) are formed in the regulating plate (610). The diameters of the plurality of light-passing holes (620) are different, and the plurality of light-passing holes (620) are all used in cooperation with the light-transmitting hole (520). A moving mechanism for adjusting the position of the light-shielding plate (510) is installed at the bottom of the light-shielding plate (510), and the moving mechanism is installed on the detection table (110). An adjusting mechanism for adjusting the position of the regulating plate (610) is installed on the light-shielding plate (510).

2. The illuminance detection device for the illumination spot of a laser illumination lens according to claim 1, characterized in that: The moving mechanism includes a light-shielding plate base (410), which is installed on the detection table (110). A moving groove (420) is formed in the light-shielding plate base (410), and a threaded rod (430) is rotatably connected in the moving groove (420).

3. The illuminance detection device for the illumination spot of a laser illumination lens according to claim 2, wherein: A moving block (440) is slidably connected in the moving groove (420), and the moving block (440) is threadedly connected to the threaded rod (430). The moving block (440) is installed at the bottom of the light-shielding plate (510).

4. An illuminance detection device for a laser illumination lens illumination spot according to claim 3, characterized in that: One end of the light-shielding plate base (410) is installed with a first motor (450). The output end of the first motor (450) penetrates into the moving groove (420), and the output end of the first motor (450) is drivingly connected to one end of the threaded rod (430).

5. The illuminance detection device for the illumination spot of a laser illumination lens according to claim 4, characterized in that: The adjusting mechanism includes a second motor (640), which is installed on the side of the light-shielding plate (510) away from the regulating plate (610). The output end of the second motor (640) penetrates the light-shielding plate (510), and a gear (650) is drivingly connected to the output end of the second motor (640).

6. The illuminance detection device for the illumination spot of a laser illumination lens according to claim 5, wherein: The adjusting mechanism further includes a rack (630), which is installed at the bottom of the regulating plate (610), and the rack (630) meshes with the gear (650).

7. An illuminance detection device for the illumination spot of a laser illumination lens according to claim 6, characterized in that: The support assembly includes a lens bracket (210), which is installed on the detection table (110). A lens under test (220) is installed on the lens bracket (210).

8. The illuminance detection device for the illumination spot of a laser illumination lens according to claim 7, wherein: The measurement assembly includes a target surface (310), which is installed on the detection table (110). A plurality of illuminance measurement points (320) are arranged on the target surface (310).

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