Electronic constant-temperature frequency stabilization type holographic sighting telescope system

Abstract

The invention provides an electronic constant-temperature frequency-stabilization type holographic sighting telescope system which comprises a supporting back plate, a laser diode, a light-emitting angle adjusting assembly, a light path folding assembly and a reflection type holographic assembly, the laser diode is fixedly arranged on the supporting back plate, and the light-emitting angle adjusting assembly is arranged on the side, away from the supporting back plate, of the laser diode; the light emitting angle adjusting assembly, the light path folding assembly and the reflective holographic assembly are sequentially arranged in the propagation direction of laser emitted by the laser diode, a small constant temperature assembly is further arranged between the laser diode and the supporting back plate, and the small constant temperature assembly is matched with the laser diode and the supporting back plate. The holographic sighting telescope has the beneficial effects that the small constant-temperature assembly can automatically adjust the temperature of the laser diode to be within the set temperature range, so that the wavelength of a laser beam emitted by the laser diode does not generate temperature drift along with the temperature change, and the stability of the sighting precision of the holographic sighting telescope is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of holographic sights, and in particular to an electronic constant temperature and frequency stabilization type holographic sight system. Background Art

[0002] Holographic sight, full name laser holographic diffraction sight, is a revolutionary fast-aiming sight that directly observes the bullet impact point and uses the bullet impact point as the aiming mark. Holographic sight adopts two-point one-line aiming, instead of the traditional three-point one-line aiming. It mainly uses the reproduced holographic image virtual image for aiming. It has the characteristics of fast aiming speed, high accuracy, strong environmental adaptability, etc. Holographic sight can be installed on various types of firearms, such as submachine guns, rifles, machine guns, sniper rifles, grenade launchers, etc. Its advantages are more significant in close combat. Therefore, holographic sights are increasingly attracting the attention of military departments and civilian military enthusiasts in various countries.

[0003] Holographic sights usually include laser diodes (LD) and holographic plates. However, in actual use, the laser diode will generate heat, causing the wavelength to drift, which will cause the position of the holographic image to change, and then reduce the aiming accuracy of the holographic sight. Therefore, in addition to requiring the holographic sight to be light enough, it is also necessary to keep the holographic image of the holographic sight clear enough and not offset, so as to ensure that the accuracy of the holographic sight will not decrease during use.

[0004] In the prior art, the Chinese utility model patent with application number CN202221284585.0 discloses a holographic sight optical device, which compensates for the temperature drift of the sight in the direction of the optical axis length by placing a collimating lens between the laser diode and the holographic lens. However, in the actual outdoor use process, as time goes by and the number of uses increases, the collimating lens will also be offset, which will still lead to a decrease in aiming accuracy. The Chinese utility model patent with application number CN202322639713.X discloses a holographic sight. In addition to providing a collimating lens between the laser and the reflective component to compensate for the temperature drift of the sight in the direction of the optical axis length, a calibration component is also added to be connected to the collimating lens, which can buffer and calibrate the collimating lens when it is subjected to external force, thereby offsetting the external force so that the collimating lens is always kept in a vertical posture and improving the aiming accuracy. However, this also increases the complexity of the internal optical path of the holographic sight, as well as the weight and production cost of the holographic sight, and the user experience brought to people is still not good enough. Summary of the invention

[0005] In order to solve the problems in the prior art, the present invention provides an electronic constant temperature and frequency-stabilized holographic sight system. By arranging a laser diode, a supporting back plate and a small constant temperature component that cooperate with each other in the holographic sight, the small constant temperature component can automatically adjust the temperature of the laser diode to be within a set temperature range, so that the wavelength of the laser beam emitted by the laser diode does not produce temperature drift with temperature changes, thereby greatly improving the stability of the aiming accuracy of the holographic sight. The structure is simple, and the weight of the holographic sight will not be increased, which greatly improves the user experience. The system solves the problems in the prior art that the laser diode of the holographic sight will have temperature drift, resulting in a decrease in aiming accuracy, the addition of a collimating lens will cause offset, the addition of a collimating lens and a calibration component will increase the weight and cost, and the user experience is not good.

[0006] The present invention provides an electronic constant temperature and frequency-stabilized holographic sight system, comprising a supporting back plate, a laser diode, a light output angle adjustment component, an optical path folding component and a reflective holographic component, wherein the laser diode is fixedly arranged on the supporting back plate, the light output angle adjustment component is arranged on a side of the laser diode away from the supporting back plate, the light output angle adjustment component, the optical path folding component and the reflective holographic component are arranged in sequence along the propagation direction of the laser emitted by the laser diode, the laser emitted by the laser diode can reach the reflective holographic component after the light output angle adjustment component adjusts the light output angle and the optical path folding component folds the optical path to assist in forming a holographic image, and a small constant temperature component is further arranged between the laser diode and the supporting back plate, the small constant temperature component is adapted to the laser diode and the supporting back plate, and the small constant temperature component can automatically adjust the temperature at the laser diode to be within a set temperature range.

[0007] The present invention is further improved, the small constant temperature component includes a semiconductor refrigerator, an integrated temperature sensor and a temperature control unit, the semiconductor refrigerator is arranged between the laser diode and the supporting back plate, the two sides of the semiconductor refrigerator are tightly attached to the laser diode and the supporting back plate respectively, the integrated temperature sensor is tightly attached to the laser diode, the integrated temperature sensor is electrically connected to the temperature control unit for feedback, and the temperature control unit is control-connected to the semiconductor refrigerator.

[0008] The present invention is further improved in that the small constant temperature component also includes a power supply, and the power supply is connected to the temperature control unit and the semiconductor refrigerator for power supply.

[0009] The present invention is further improved in that the supporting back plate is made of metal copper or aluminum alloy which is easy to dissipate heat.

[0010] The present invention is further improved, the light output angle adjustment component includes an aperture and a concave lens that cooperate with each other, the aperture and the concave lens are arranged in sequence along the propagation direction of the laser emitted by the laser diode, the center of the light beam emitted by the laser diode, the center of the aperture, and the center of the concave lens are in the same horizontal plane and on the same straight line, and the aperture can limit the light output angle range of the laser diode.

[0011] The present invention is further improved, the optical path folding assembly includes a smooth curved reflector and a flexible support frame for the reflector, the smooth curved reflector is fixedly connected to the flexible support frame for the reflector, the reflecting surface of the smooth curved reflector cooperates with the concave lens, the center of the light beam emitted by the laser diode, the center of the aperture, the center of the concave lens, and the center of the smooth curved reflector are in the same horizontal plane and on the same straight line.

[0012] The present invention is further improved in that the smooth curved reflector is a spherical reflector or an off-axis parabolic reflector.

[0013] The present invention is further improved, the reflective holographic component includes a reflective holographic glass slide and a flexible support frame for the holographic glass slide, the reflective holographic glass slide and the flexible support frame for the holographic glass slide are fixedly connected, and the reflective holographic glass slide is vertically arranged above the reflective surface side of the smooth curved reflector and cooperates with the smooth curved reflector.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides an electronic constant temperature and frequency-stabilized holographic sight system, by arranging mutually cooperating laser diodes, supporting back plates and small constant temperature components in the holographic sight, the small constant temperature component can automatically adjust the temperature of the laser diode to be within the set temperature range, and the temperature fluctuation can be easily controlled within 0.1K, so that the wavelength of the laser beam emitted by the laser diode hardly produces temperature drift with temperature changes, which can be completely ignored, thereby greatly improving the stability of the aiming accuracy of the holographic sight, the structure is simple, the weight of the holographic sight will not be increased, and the user experience is greatly improved; an aperture is arranged in the direction of the optical axis of the laser beam to limit the light output angle range of the laser diode, ensure that the divergence angle of the light emitted by the fast and slow axes of the laser diode is consistent, and improve the light irradiated on the holographic glass slide The uniformity and shape of the holographic image are improved, and the quality of the holographic image is improved; since a concave lens is arranged in front of the aperture, the laser beam can reach a sufficiently large beam area at a shorter distance; a spherical or off-axis parabolic reflector is also arranged in the direction of the optical axis of the laser beam, which can effectively fold the system optical path and shorten the total length of the system; the smooth curved reflector is supported and fixed by a flexible reflector support frame, and the reflective holographic glass is supported and fixed by a flexible holographic glass support frame, which can buffer and protect the smooth curved reflector and the reflective holographic glass when they are impacted by external force, and ensure that the positions of the smooth curved reflector and the reflective holographic glass are not offset, which solves the problems in the prior art that the laser diode of the holographic sight will have temperature drift resulting in a decrease in aiming accuracy, the added collimating lens will cause offset, the added collimating lens and calibration components will increase the weight and cost, and the user experience is not good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the electronic constant temperature and frequency stabilization type holographic sight system of the present invention.

[0017] In the figure, 1-support back plate, 2-semiconductor refrigerator, 3-integrated temperature sensor, 4-laser diode, 5-aperture, 6-concave lens, 7-smooth curved reflector, 8-reflective holographic glass slide, 9-human eye observation point, 10-holographic image, 11-temperature control unit, 12-power supply, 13-reflector flexible support frame, 14-holographic glass slide flexible support frame. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit the application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0019] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0021] like Figure 1As shown, the present invention provides an electronic constant temperature and frequency-stabilized holographic sight system, comprising a supporting back plate 1, a laser diode 4, a light output angle adjustment component, an optical path folding component and a reflective holographic component, wherein the laser diode 4 is fixedly arranged on the supporting back plate 1, the light output angle adjustment component is arranged on the side of the laser diode 4 away from the supporting back plate 1, the light output angle adjustment component, the optical path folding component and the reflective holographic component are arranged in sequence along the propagation direction of the laser emitted by the laser diode 4, the laser emitted by the laser diode 4 can reach the reflective holographic component after the light output angle adjustment component adjusts the light output angle and the optical path folding component folds the optical path to assist in forming a holographic image 10, which is viewed by human eyes at a human eye observation point 9, and a small constant temperature component is further arranged between the laser diode 4 and the supporting back plate 1, and the small constant temperature component is adapted to the laser diode 4 and the supporting back plate 1. In this embodiment, the small constant temperature component can automatically adjust the temperature of the laser diode 4 to be within the set temperature range, and the temperature fluctuation can be easily controlled within 0.1K, so that the wavelength of the laser beam emitted by the laser diode hardly produces temperature drift with temperature changes, which can be completely ignored, thereby greatly improving the stability of the aiming accuracy of the holographic sight. The structure is simple, does not increase the weight of the holographic sight, and greatly improves the user experience. When the holographic sight is working, the laser diode is used to emit red (or green) visible light waves. As the system light source, the laser beam emitted by the laser diode is divergent light, and the central light of the divergent light is in the horizontal direction. The laser beam emitted by the laser diode runs to the right in the horizontal direction, and reaches the vertically placed concave lens after passing through the aperture. In front of the concave lens, the expanded laser beam reaches the vertically placed smooth curved reflector in the horizontal direction. The laser beam is reflected by the smooth curved reflector to the reflective holographic glass slide. The reflective holographic glass slide is placed vertically to the left above the smooth curved reflector. The two elements are parallel to each other. The diffraction light behind the reflective holographic glass slide runs in the horizontal direction. The human eye observes in front of the reflective holographic glass slide, that is, observes at the human eye observation point 9, and can see the holographic image 10 (virtual image) presented in the horizontal direction behind the reflective holographic glass slide. The semiconductor cooler and the integrated temperature sensor are placed in the structure where the laser diode is located, which are used to control the temperature of the laser diode to prevent the laser diode from being too high or too low in temperature during use, thereby affecting the holographic image.

[0022] like Figure 1As shown, the small constant temperature component includes a semiconductor refrigerator 2, an integrated temperature sensor 3 and a temperature control unit 11. The semiconductor refrigerator 2 is arranged between the laser diode 4 and the supporting back plate 1. The two sides of the semiconductor refrigerator 2 are closely attached to the laser diode 4 and the supporting back plate 1 respectively. The integrated temperature sensor 3 is closely attached to the laser diode 4. The integrated temperature sensor 3 is electrically connected to the temperature control unit 11 for feedback. The temperature control unit 11 is connected to the semiconductor refrigerator 2 for control. The small constant temperature component also includes a power supply 12, which is connected to the temperature control unit 11 and the semiconductor refrigerator 2 for power supply. In this embodiment, the cold end of the semiconductor refrigerator is attached to the structure where the laser diode is located. The integrated temperature sensor transmits the real-time temperature of the structure where the laser diode is located, and transmits the temperature data to the temperature control unit. The temperature control unit is provided with a temperature control chip. If the temperature is too high and exceeds the set high temperature threshold, the temperature control unit starts to start cooling; if the ambient temperature is too low and is lower than the set low temperature threshold, the current direction in the semiconductor refrigerator is changed, so that the cold end and the hot end of the semiconductor refrigerator are interchanged, and the semiconductor refrigerator heats the laser diode. The integrated temperature sensor is used to collect the temperature at the laser diode and transmit it to the temperature control unit. The temperature control unit is used to receive the temperature information collected by the integrated temperature sensor and control the semiconductor refrigerator according to the set high temperature threshold and the set low temperature threshold to ensure that the temperature at the laser diode is within the set temperature range and avoid the wavelength or frequency of the laser diode drifting with temperature.

[0023] like Figure 1 As shown, the material of the support back plate 1 is copper or aluminum alloy which is easy to dissipate heat. In this embodiment, the support back plate is used to support and fix the laser diode and the semiconductor cooler, and also acts as a heat sink.

[0024] like Figure 1 As shown, the light output angle adjustment component includes an aperture 5 and a concave lens 6 that cooperate with each other. The aperture 5 and the concave lens 6 are sequentially arranged along the propagation direction of the laser emitted by the laser diode 4. The center of the light beam emitted by the laser diode 4, the center of the aperture 5, and the center of the concave lens 6 are in the same horizontal plane and on the same straight line. The aperture 5 can limit the light output angle range of the laser diode 4. In this embodiment, the aperture is used to limit the light output angle range of the laser diode, ensure that the divergence angles of the light emitted by the fast and slow axes of the laser diode are consistent, facilitate the shaping of the light beam by the optical elements behind, and ensure the quality of the laser diode light beam. The aperture is placed vertically in front of the laser diode. The concave lens is used to further expand the divergence angle of the divergent light emitted by the laser diode, so that the laser beam can achieve the required beam area with less travel. The concave lens is placed vertically in front of the aperture, and the center of the concave lens is on the same horizontal line as the center of the aperture. After the light beam emitted by the laser diode passes through the aperture and the concave lens, the divergence angle is increased, so that the area of ​​the light beam increases rapidly in a short distance.

[0025] like Figure 1As shown, the optical path folding component includes a smooth curved reflector 7 and a reflector flexible support frame 13. The smooth curved reflector 7 is fixedly connected to the reflector flexible support frame 13. The reflective surface of the smooth curved reflector 7 matches the concave lens 6. The center of the light beam emitted by the laser diode 4, the center of the aperture 5, the center of the concave lens 6, and the center of the smooth curved reflector 7 are in the same horizontal plane and on the same straight line. The smooth curved reflector 7 is a spherical reflector or an off-axis parabolic reflector. In this embodiment, the smooth curved reflector is used to fold the optical path and shorten the total length of the system. The smooth curved reflector is placed in front of the concave lens. The center of the smooth curved reflector is in the same horizontal straight line with the center of the concave lens, that is, the laser diode, the aperture, the concave lens and the smooth curved reflector are on the same optical axis. After the light beam emitted by the laser diode is expanded by the concave lens, it is folded by the smooth curved reflector and emitted upward at a certain angle. The reflector flexible support frame is used to fix the smooth curved reflector and provide buffer protection when the smooth curved reflector is impacted by external force, so as to ensure that the smooth curved reflector always remains in a vertical posture.

[0026] like Figure 1 As shown, the reflective holographic component includes a reflective holographic glass slide 8 and a holographic glass slide flexible support frame 14. The reflective holographic glass slide 8 and the holographic glass slide flexible support frame 14 are fixedly connected. The reflective holographic glass slide 8 is vertically arranged above the reflective surface side of the smooth curved reflector 7 and cooperates with the smooth curved reflector 7. In this embodiment, the reflective holographic glass slide is arranged above and slightly to the left of the smooth curved reflector. The light emitted from the smooth curved reflector shines on the reflective holographic glass slide. The human eye at the human eye observation point 9 can observe a holographic image in the distance in the horizontal direction in front of the reflective holographic glass slide. The holographic glass slide flexible support frame is used to fix the reflective holographic glass slide and to provide buffer protection when the reflective holographic glass slide is impacted by external force, so as to ensure that the reflective holographic glass slide always remains in a vertical posture.

[0027] From the above, it can be seen that the present invention provides an electronic constant temperature and frequency-stabilized holographic sight system. By arranging mutually coordinated laser diodes, supporting back plates and small constant temperature components in the holographic sight, the small constant temperature component can automatically adjust the temperature of the laser diode to be within a set temperature range, and the temperature fluctuation can be easily controlled within 0.1K, so that the wavelength of the laser beam emitted by the laser diode hardly produces temperature drift with temperature changes, which can be completely ignored, thereby greatly improving the stability of the aiming accuracy of the holographic sight, and the structure is simple, and the weight of the holographic sight will not be increased, which greatly improves the user experience; an aperture is arranged in the direction of the optical axis of the laser beam to limit the light output angle range of the laser diode, ensure that the divergence angle of the light emitted by the fast and slow axes of the laser diode is consistent, and improve the uniformity and shape of the light irradiated on the holographic glass slide. , improving the quality of the holographic image; since a concave lens is arranged in front of the aperture, the laser beam can reach a sufficiently large beam area at a shorter distance; a spherical or off-axis parabolic reflector is also arranged in the direction of the optical axis of the laser beam, which can effectively fold the system optical path and shorten the total length of the system; the smooth curved reflector is supported and fixed by a flexible reflector support frame, and the reflective holographic glass slide is supported and fixed by a flexible holographic glass slide support frame, which can provide buffering protection for the smooth curved reflector and the reflective holographic glass slide when they are impacted by external force, ensuring that the positions of the smooth curved reflector and the reflective holographic glass slide do not shift, solving the problems in the prior art that the laser diode of the holographic sight will have temperature drift resulting in a decrease in aiming accuracy, the addition of a collimating lens will cause offset, the addition of a collimating lens and a calibration component will increase the weight, increase the cost, and cause a poor user experience.

[0028] The specific implementation modes described above are preferred implementation modes of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation modes, and all equivalent changes made according to the present invention are within the protection scope of the present invention.

Claims

1. An electronic constant temperature and frequency stabilization type holographic sight system, characterized in that: It includes a supporting backplane, a laser diode, a light output angle adjustment component, an optical path folding component and a reflective holographic component, wherein the laser diode is fixedly arranged on the supporting backplane, the light output angle adjustment component is arranged on a side of the laser diode away from the supporting backplane, the light output angle adjustment component, the optical path folding component and the reflective holographic component are arranged in sequence along the propagation direction of the laser emitted by the laser diode, and the laser emitted by the laser diode can reach the reflective holographic component after the light output angle adjustment component adjusts the light output angle and the optical path folding component folds the optical path to assist in forming a holographic image, and a small constant temperature component is also arranged between the laser diode and the supporting backplane, the small constant temperature component is adapted to the laser diode and the supporting backplane, and the small constant temperature component can automatically adjust the temperature at the laser diode to be within a set temperature range.

2. The electronic constant temperature and frequency stabilization type holographic sight system according to claim 1 is characterized in that: The small constant temperature component includes a semiconductor refrigerator, an integrated temperature sensor and a temperature control unit. The semiconductor refrigerator is arranged between the laser diode and the supporting back plate. The two sides of the semiconductor refrigerator are tightly attached to the laser diode and the supporting back plate respectively. The integrated temperature sensor is tightly attached to the laser diode. The integrated temperature sensor is electrically connected to the temperature control unit for feedback. The temperature control unit is control-connected to the semiconductor refrigerator.

3. The electronic constant temperature and frequency stabilization type holographic sight system according to claim 2 is characterized in that: The small constant temperature component also includes a power supply, and the power supply is connected to the temperature control unit and the semiconductor refrigerator for power supply.

4. The electronic constant temperature and frequency stabilization type holographic sight system according to claim 3 is characterized in that: The supporting back plate is made of copper or aluminum alloy which is easy to dissipate heat.

5. The electronic constant temperature and frequency stabilization type holographic sight system according to claim 4 is characterized in that: The light output angle adjustment component includes an aperture and a concave lens that cooperate with each other. The aperture and the concave lens are arranged in sequence along the propagation direction of the laser emitted by the laser diode. The center of the light beam emitted by the laser diode, the center of the aperture, and the center of the concave lens are in the same horizontal plane and on the same straight line. The aperture can limit the light output angle range of the laser diode.

6. The electronic constant temperature and frequency stabilization type holographic sight system according to claim 5 is characterized in that: The optical path folding component includes a smooth curved reflector and a flexible support frame for the reflector. The smooth curved reflector is fixedly connected to the flexible support frame for the reflector. The reflecting surface of the smooth curved reflector cooperates with the concave lens. The center of the light beam emitted by the laser diode, the center of the aperture, the center of the concave lens, and the center of the smooth curved reflector are in the same horizontal plane and on the same straight line.

7. The electronic constant temperature and frequency stabilization type holographic sight system according to claim 6 is characterized in that: The smooth curved reflector is a spherical reflector or an off-axis parabolic reflector.

8. The electronic constant temperature and frequency stabilization type holographic sight system according to claim 7 is characterized in that: The reflective holographic component includes a reflective holographic glass slide and a holographic glass slide flexible support frame, the reflective holographic glass slide and the holographic glass slide flexible support frame are fixedly connected, and the reflective holographic glass slide is vertically arranged above the reflective surface side of the smooth curved reflector and cooperates with the smooth curved reflector.

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