Large unmanned aerial vehicle lens and unmanned aerial vehicle

Abstract

The utility model provides a large unmanned aerial vehicle lens which comprises a lens frame, a first pressing ring arranged on the periphery of the head of the lens frame in a sleeved mode and a second pressing ring arranged on the inner periphery of the tail of the lens frame in a sleeved mode. A plurality of lenses are clamped between the gaskets and between the gaskets and the first pressing ring; the first pressing ring, the second pressing ring, the gasket and the mirror frame are all made of aluminum alloy. The lens made of the aluminum alloy can be light in weight and has vibration and impact resistance stability, the temperature range is from-40 DEG C to 80 DEG C, the thermal expansion coefficient of the lens made of the aluminum alloy is small, the lens can be stably supported through cooperation of the first pressing ring, the second pressing ring, the gasket and the lens frame, the lens is prevented from deviating, and the service life of the lens is prolonged. The imaging quality of the lens is ensured.

Description

Technical Field

[0001] The utility model relates to the field of unmanned aerial vehicle lenses, and in particular to a large-scale unmanned aerial vehicle lens and a unmanned aerial vehicle. Background Art

[0002] Large military drones are used for shooting during aerial operations, and objects need to be captured and identified. The drones have extremely high requirements for load when operating. The weight of the load affects the flight speed and energy consumption of the drone. In addition, the drones are affected by airflow or obstacles during flight, causing vibrations or impacts. This requires them to have high-strength vibration and impact resistance and climate environment. They need to adapt to rainy days and high and low temperature environments and still be able to work stably. Therefore, there is an urgent need for a large drone lens that can meet the above requirements. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a large drone lens and a drone to solve the problems mentioned in the above background technology section.

[0004] The utility model is realized by the following technical solutions:

[0005] A large unmanned aerial vehicle lens comprises a lens frame, a first pressure ring mounted on the outer periphery of the head of the lens frame, and a second pressure ring mounted on the inner periphery of the tail of the lens frame. A plurality of washers are arranged in sequence from the head to the tail inside the lens frame, and a plurality of lenses are sandwiched between the washers and between the washers and the first pressure ring. The first pressure ring, the second pressure ring, the washers and the lens frame are all made of aluminum alloy.

[0006] Furthermore, the gasket includes a first gasket, a second gasket, a third gasket, a fourth gasket and a fifth gasket, and a first step and a second step are extended inwardly on the inner circumference of the frame; a first lens is sandwiched between the first pressure ring and the first gasket; a second lens and a third lens are sandwiched between the first gasket and the second gasket; a fourth lens is sandwiched between the second gasket and the third gasket; a fifth lens and a sixth lens are sandwiched between the third gasket and the fourth gasket; a seventh lens and an eighth lens are sandwiched between the fourth gasket and the fifth gasket; a ninth lens and a tenth lens are sandwiched between the fifth gasket and the first step; an eleventh lens is sandwiched between the second step and the second pressure ring; a sealing ring is provided between the first lens and the frame, and the sealing ring abuts the first gasket.

[0007] Furthermore, a first Mylar sheet is sandwiched between the eighth lens and the fifth gasket; and a second Mylar sheet is sandwiched between the tenth lens and the first step.

[0008] Furthermore, the second lens and the third lens are glued together, the fifth lens and the sixth lens are glued together, the seventh lens and the eighth lens are glued together, and the ninth lens and the tenth lens are glued together.

[0009] Furthermore, the lens frame is provided with a first positioning surface and a second positioning surface for positioning the tenth lens and the eleventh lens, and the tolerance of the first positioning surface and the second positioning surface is ±0.01 mm.

[0010] Furthermore, the first lens and the inner wall of the lens frame have a clearance fit, and the tolerance range of the clearance fit is The second lens, the fourth lens, the sixth lens, the eighth lens, the tenth lens and the eleventh lens are all clearance-matched with the inner wall of the lens frame, and the tolerance range of the clearance is

[0011]

[0012] Furthermore, the second pressing ring is fixedly connected with a filter, and the second pressing ring is provided with a glue dispensing groove for adhering the filter.

[0013] Furthermore, the wall thickness of the frame is in the range of 1.5 mm to 2.0 mm.

[0014] Furthermore, the coaxiality of the inner wall of the frame is less than or equal to Φ0.01 mm.

[0015] On the other hand, the utility model provides a drone, comprising a large drone lens as described in any one of the above items.

[0016] The beneficial effects of the utility model are as follows: a large unmanned aerial vehicle lens comprises a lens frame, a first pressure ring sleeved on the outer periphery of the head portion of the lens frame, and a second pressure ring sleeved on the inner periphery of the tail portion of the lens frame, a plurality of washers are arranged in sequence from the head portion to the tail portion inside the lens frame, a plurality of lenses are sandwiched between the washers and between the washers and the first pressure ring; the first pressure ring, the second pressure ring, the washers and the lens frame are all made of aluminum alloy; the lens made of aluminum alloy can be light in weight and have stability against vibration and impact, and the temperature range is within the range of -40° to 80°. The lens made of aluminum alloy has a small thermal expansion coefficient, so that the cooperation of the first pressure ring, the second pressure ring, the washers and the lens frame can stably support the lens, prevent the lens from shifting, and ensure the imaging quality of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model.

[0018] Figure 2 It is a central cross-sectional view of the utility model.

[0019] Figure 3 It is a center cross-sectional view of the mirror frame of the utility model.

[0020] The above drawings include the following reference numerals:

[0021] 1. Mirror frame; 11. First step; 12. Second step; 13. First positioning surface; 14. Second positioning surface; 2. First pressure ring; 3. Second pressure ring; 4. First gasket; 5. Second gasket; 6. Third gasket; 7. Fourth gasket; 8. Fifth gasket; 9A. First lens; 9B. Second lens; 9C. Third lens; 9D. Fourth lens; 9E. Fifth lens; 9F. Sixth lens; 9G. Seventh lens; 9H. Eighth lens; 9I. Ninth lens; 9J. Tenth lens; 9K. Eleventh lens; 9L. Sealing ring; 9M. First Mylar pad; 9N. Second Mylar pad; 9O. Base; 9P. Filter. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0023] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0024] Reference Figures 1 to 3 As shown, a large drone lens comprises a lens frame 1, a first pressure ring 2 sleeved on the outer periphery of the head of the lens frame 1, and a second pressure ring 3 sleeved on the inner periphery of the tail of the lens frame 1. A plurality of washers are arranged in sequence from the head to the tail inside the lens frame 1, and a plurality of lenses are sandwiched between the washers and between the washers and the first pressure ring 2; the first pressure ring 2, the second pressure ring 3, the washers and the lens frame 1 are all made of aluminum alloy.

[0025] The lens of a large military drone is required to be light and stable against vibration and impact. Since the demand for large military drones is small, from the perspective of performance and cost, the lens frame 1, the first pressure ring 2, the second pressure ring 3 and the gasket made of aluminum alloy can meet the above requirements. The lens made of aluminum alloy can be light and stable against vibration and impact. The temperature range is from low temperature -40° to high temperature 80°. The thermal expansion coefficient of the lens made of aluminum alloy is small, so that the cooperation of the first pressure ring 2, the second pressure ring 3, the gasket and the lens frame 1 can stably support the lens, prevent the lens from shifting, and ensure the imaging quality of the lens.

[0026] In order to meet the shooting requirements, the optical indicators of the military large-scale drone lens are: maximum image surface ￠18mm; effective focal length 20mm; aperture F2.2; working object distance 1m-∞. Therefore, a total of 11 glass lenses are used to make the lens in the optical design.

[0027] The above-mentioned gaskets include a first gasket 4, a second gasket 5, a third gasket 6, a fourth gasket 7 and a fifth gasket 8, and a first step 11 and a second step 12 are extended inwardly from the inner circumference of the lens frame 1; a first lens 9A is sandwiched between the first pressure ring 2 and the first gasket 4; a second lens 9B and a third lens 9C are sandwiched between the first gasket 4 and the second gasket 5; a fourth lens 9D is sandwiched between the second gasket 5 and the third gasket 6; a fifth lens 9E and a sixth lens 9F are sandwiched between the third gasket 6 and the fourth gasket 7; a seventh lens 9G and an eighth lens 9H are sandwiched between the fourth gasket 7 and the fifth gasket 8; a ninth lens 9I and a tenth lens 9J are sandwiched between the fifth gasket 8 and the first step 11; an eleventh lens 9K is sandwiched between the second step 12 and the second pressure ring 3; a sealing ring 9L is provided between the first lens 9A and the lens frame 1, and the sealing ring 9L abuts against the first gasket 4. The 11 lenses are clamped by the washers, the first step 11, the second step 12, the first pressure ring 2 and the second pressure ring 3, so as to prevent the lenses from shifting when subjected to vibration or impact, thereby affecting the molding quality.

[0028] A first Mylar sheet 9M is sandwiched between the eighth lens 9H and the fifth gasket 8, and a second Mylar sheet 9N is sandwiched between the tenth lens 9J and the first step 11. The first Mylar sheet 9M and the second Mylar sheet 9N are used for shading to make the lens focus more clearly.

[0029] The second lens 9B and the third lens 9C are cemented together, the fifth lens 9E and the sixth lens 9F are cemented together, the seventh lens 9G and the eighth lens 9H are cemented together, and the ninth lens 9I and the tenth lens 9J are cemented together.

[0030] The lens frame 1 is provided with a first positioning surface 13 and a second positioning surface 14 for positioning the tenth lens 9J and the eleventh lens 9K, and the tolerance of the first positioning surface 13 and the second positioning surface 14 is ±0.01mm. This distance is directly related to the spacing between the tenth lens 9J and the eleventh lens, and needs to be strictly controlled, so the tolerance is set to ±0.01. The distance between the first positioning surface 13 and the second positioning surface 14 is directly related to the spacing between the tenth lens 9J and the eleventh lens 9K, and needs to be strictly controlled, so the tolerance is set to ±0.01 to ensure clear imaging of the lens.

[0031] Since the outer wall of the first lens 9A needs to be coated with ink, the first lens 9A and the inner wall of the lens frame 1 have a clearance fit, and the tolerance range of the clearance fit is The second lens 9B, the fourth lens 9D, the sixth lens 9F, the eighth lens 9H, the tenth lens 9J and the eleventh lens 9K are all matched with the inner wall of the lens frame 1, and the tolerance range of the gap matching is Ensuring that each lens can be accurately snapped into the lens frame 1 can prevent the lens from shifting when subjected to vibration or impact, thereby affecting the molding quality.

[0032] The second pressing ring 3 is fixedly connected with the optical filter 9P. The second pressing ring 3 is provided with a glue dispensing groove for adhering the optical filter 9P. By filling glue in the glue dispensing groove, the optical filter 9P and the second pressing ring 3 are glued together.

[0033] The wall thickness of the frame 1 is in the range of 1.5 mm to 2.0 mm, preferably 1.5 mm. After multiple experiments and tests, when the wall thickness of the frame 1 reaches 1.5 mm, the wall of the frame 1 is not easily deformed during the machining process, when the frame 1 is clamped and turned, and has sufficient vibration and impact resistance.

[0034] The coaxiality of the inner wall of the lens frame 1 is less than or equal to Φ0.01 mm, so that the centers of the lenses are aligned to ensure the imaging quality of the lenses.

[0035] The outer periphery of the frame 1 is provided with an M30*0.5 external thread, which is threadedly connected to the base 9O through the external thread. The first pressure ring 2, the second pressure ring 3, the gasket and the frame 1 are supported by 6061-T6 aluminum alloy, and the base 9O is made of PC+30% glass fiber to avoid the overall weight exceeding the design requirements.

[0036] On the other hand, the utility model provides a drone, comprising a large drone lens as described in any one of the above items.

[0037] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A large drone lens, characterized by: The spectacles comprises a frame (1), a first pressure ring (2) sleeved on the outer periphery of the head of the frame (1), and a second pressure ring (3) sleeved on the inner periphery of the tail of the frame (1); a plurality of washers are arranged in sequence from the head to the tail inside the frame (1); a plurality of lenses are sandwiched between the washers and between the washers and the first pressure ring (2); the first pressure ring (2), the second pressure ring (3), the washers and the frame (1) are all made of aluminum alloy.

2. A large drone lens according to claim 1, characterized in that: The gasket comprises a first gasket (4), a second gasket (5), a third gasket (6), a fourth gasket (7) and a fifth gasket (8); the inner circumference of the mirror frame (1) is provided with a first step (11) and a second step (12) extending inwardly; A first lens (9A) is sandwiched between the first pressure ring (2) and the first gasket (4); A second lens (9B) and a third lens (9C) are sandwiched between the first gasket (4) and the second gasket (5); A fourth lens (9D) is sandwiched between the second gasket (5) and the third gasket (6); A fifth lens (9E) and a sixth lens (9F) are sandwiched between the third gasket (6) and the fourth gasket (7); A seventh lens (9G) and an eighth lens (9H) are sandwiched between the fourth gasket (7) and the fifth gasket (8); A ninth lens (9I) and a tenth lens (9J) are sandwiched between the fifth gasket (8) and the first step (11); An eleventh lens (9K) is sandwiched between the second step (12) and the second pressure ring (3); A sealing ring (9L) is provided between the first lens (9A) and the lens frame (1), and the sealing ring (9L) abuts against the first gasket (4).

3. A large drone lens according to claim 2, characterized in that: A first Mylar sheet (9M) is sandwiched between the eighth lens (9H) and the fifth gasket (8); and a second Mylar sheet (9N) is sandwiched between the tenth lens (9J) and the first step (11).

4. The large drone lens according to claim 2, characterized in that: The second lens (9B) and the third lens (9C) are glued together, the fifth lens (9E) and the sixth lens (9F) are glued together, the seventh lens (9G) and the eighth lens (9H) are glued together, and the ninth lens (9I) and the tenth lens (9J) are glued together.

5. The large drone lens according to claim 2, characterized in that: The lens frame (1) is provided with a first positioning surface (13) and a second positioning surface (14) for positioning the tenth lens (9J) and the eleventh lens (9K), and the tolerance of the first positioning surface (13) and the second positioning surface (14) is ±0.01 mm.

6. The large drone lens according to claim 3, characterized in that: The first lens (9A) and the inner wall of the lens frame (1) have a clearance fit, and the tolerance range of the clearance fit is The second lens (9B), the fourth lens (9D), the sixth lens (9F), the eighth lens (9H), the tenth lens (9J) and the eleventh lens (9K) are all clearance-matched with the inner wall of the lens frame (1), and the tolerance range of the clearance-matching is 7. The large drone lens according to claim 2, characterized in that: The second pressing ring (3) is fixedly connected with a filter (9P), and the second pressing ring (3) is provided with a glue dispensing groove for adhering the filter (9P).

8. The large drone lens according to claim 1, characterized in that: The wall thickness of the mirror frame (1) ranges from 1.5 mm to 2.0 mm.

9. The large drone lens according to claim 1, characterized in that: The coaxiality of the inner wall of the mirror frame (1) is less than or equal to Φ0.01 mm.

10. A drone, characterized in that: A large drone lens comprising a lens as described in any one of claims 1 to 9.

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