Radiation-resistant zoom lens module

Abstract

The utility model discloses an irradiation-resistant zoom lens module, which particularly relates to the field of cameras and comprises a module ring, a mounting ring is arranged on one side of the module ring, a connecting piece is arranged on the other side of the module ring, a protective lens is arranged on one side of an inner cavity of the connecting piece, and a first limiting ring is arranged on one side, close to the protective lens, of the connecting piece. A photosensitive sensor is arranged in the middle of the mounting ring. According to the utility model, the lens of the lens module selects flint glass and crown glass as lens glass, the oxide of lanthanide series metal cerium is added, the optical performance and the radiation resistance of the zoom lens are improved, the radiation resistance is realized, and the limiting screw ring extrudes the light-transmitting lens, so that the lens module is more stable and reliable. The light-transmitting mirror can be fixed in the middle of the placement ring, the placement ring is controlled to move through rotation of the threaded rod to achieve the stable driving effect, the movement stability of the light-transmitting mirror is further improved through the limiting sliding strips and the sliding grooves, lens inclination caused by collision or movement is avoided, and the movement stability of the lens is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cameras, and more specifically, to a radiation-resistant zoom lens module. Background Art

[0002] A zoom lens is a camera lens that can change its focal length within a certain range, thereby obtaining different widths of field angles, different sizes of images, and different ranges of scenery. A zoom lens can change the shooting range by changing the focal length without changing the shooting distance, so it is very helpful for picture composition.

[0003] In a nuclear radiation environment, video surveillance of key areas is required. In a nuclear radiation environment, when the existing zoom lens module is in use, the free electrons caused by nuclear radiation ionization will cause the color center of the optical glass to turn brown. In layman's terms, the lens becomes black and the transmittance drops significantly, causing the optical performance to weaken, affecting the shooting picture effect. Therefore, a radiation-resistant zoom lens module has emerged.

[0004] In actual use, the existing zoom lens module with radiation resistance function realizes displacement change through the principle of metal coil cutting magnetic field. The mechanical structure is complex, and it is easy for the lens to tilt slightly when the whole moves or collides, affecting the stability of the lens movement and the focusing shooting effect. Utility Model Content

[0005] In order to overcome the above defects of the prior art, the utility model provides a radiation-resistant zoom lens module to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a radiation-resistant zoom lens module, comprising a module ring, a mounting ring is arranged on one side of the module ring, a connecting piece is arranged on the other side, a protective mirror is arranged on one side of the inner cavity of the connecting piece, a first limiting ring is arranged on the side of the connecting piece close to the protective mirror, a photosensitive sensor is arranged in the middle of the mounting ring, and a gear ring is fixedly connected to the side of the mounting ring close to the module ring;

[0007] Limit bolts are symmetrically inserted around the mounting ring, a filter is arranged in the middle of the gear ring, a first connecting ring and a second connecting ring are fixedly connected on both sides of the module ring, a limiting sliding groove is arranged on the outer surface of the first connecting ring, and a second limiting ring is symmetrically fixedly connected on both sides of the inner cavity of the module ring;

[0008] A placement ring is arranged in the middle of the module ring, threaded rods are symmetrically inserted on both sides of the placement ring, one end of the threaded rods is fixedly connected to a transmission gear, and a light-transmitting mirror and a limiting screw ring are arranged in the middle of the placement ring.

[0009] Preferably, one end of the first connecting ring extends to one side of the mounting ring and is located on the surface of the gear ring, the limiting bolt corresponds to the limiting slot, and one end of the limiting bolt extends to the inside of the limiting slot.

[0010] Preferably, the transmission gear is located on both sides of the gear ring, the transmission gear is meshed with the gear ring, the threaded rod is threadedly connected to the placement ring, and the cross-sectional shape of the placement ring is set to be "L" shape.

[0011] Preferably, the first limiting ring is connected to the internal thread of the connecting member, the connecting member is threadedly connected to the second connecting ring, the cross-sectional shape of the connecting member is set to a "T" shape, and the protective mirror is set on one side of the middle part of the connecting member.

[0012] Preferably, the limiting screw ring is threadedly connected to the placement ring, the limiting slide bars are symmetrically fixedly connected to the inner cavity of the module ring on both sides, and the placement ring is symmetrically provided with slide grooves corresponding to the limiting slide bars on both sides, and the limiting slide bars are arranged in the middle of the slide grooves.

[0013] Preferably, both ends of the threaded rod extend to the middle of the second limiting ring respectively and are rotatably connected to the wall of the second limiting ring, and driving grooves are symmetrically provided on both sides of the inner cavity of the limiting screw ring.

[0014] Preferably, the protective mirror, the light-transmitting mirror and the filter are all made of any one of flint glass, crown glass and mixed glass with lanthanide metal cerium oxide added.

[0015] Technical effects and advantages of the utility model:

[0016] 1. The utility model firstly selects flint glass and crown glass as lens glass for the lens of the lens module, and improves the optical performance and radiation resistance of the zoom lens by adding oxide of lanthanide metal cerium, thereby achieving the radiation resistance effect. At the same time, the light-transmitting mirror can be fixed in the middle of the placement ring by squeezing the light-transmitting mirror by the limiting screw ring, and the movement of the placement ring is controlled by the rotation of the threaded rod to achieve the effect of stable driving, and the stability of the movement of the light-transmitting mirror is further improved by the limiting slider and the slide groove, so as to avoid the tilt of the lens due to collision or movement, improve the stability of the lens movement, and improve the use effect;

[0017] 2. The utility model can further protect the lens module through the protective mirror, and the driving slot is convenient for rotating the limit screw ring through the caliper to install and remove it, which is convenient for installing and fixing the protective mirror. At the same time, the first connecting ring is inserted into the middle of the mounting ring, and the limit bolt can be rotated to extend one end of the limit bolt to the inside of the limit slot, which is convenient for connecting the module ring with the mounting ring, and does not affect the rotation control of the module ring relative to the mounting ring, thereby improving the use effect.

[0018] In summary, through the mutual influence of the above-mentioned multiple effects, the optical performance and radiation resistance of the zoom lens can be improved, and the movement stability and installation stability of the light-transmitting mirror can be improved, avoiding the lens tilt caused by collision or movement, which affects the focus shooting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0021] Figure 3 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0022] Figure 4 It is a schematic diagram of the split structure of the module ring and the installation ring of the utility model.

[0023] Figure 5 This is a schematic diagram of the disassembled structure of the module ring, mounting ring, connector, and protective mirror of the utility model.

[0024] Figure 6 It is a schematic diagram of the split cross-sectional structure of the utility model.

[0025] Figure 7 It is a schematic diagram of the split structure of the limiting screw ring, the placement ring and the module ring of the utility model.

[0026] The accompanying drawings are marked as follows: 1. module ring; 2. mounting ring; 3. connector; 4. protective mirror; 5. first limit ring; 6. photosensitive sensor; 7. limit bolt; 8. filter; 9. gear ring; 10. first connecting ring; 11. limit slide groove; 12. second limit ring; 13. placement ring; 14. light-transmitting mirror; 15. limit screw ring; 16. threaded rod; 17. transmission gear; 18. second connecting ring; 19. limit slide bar; 20. drive slot. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0028] As attached Figure 1-7A radiation-resistant zoom lens module shown includes a module ring 1, a mounting ring 2 is provided on one side of the module ring 1, and the module ring 1 is conveniently connected to a camera through the mounting ring 2, and a connecting member 3 is provided on the other side, and a protective mirror 4 is provided on one side of the inner cavity of the connecting member 3, and the connecting member 3 and the protective mirror 4 are convenient for protecting and fixing the end of the module ring 1 away from the mounting ring 2, and the internal components of the module ring 1 can be conveniently disassembled and repaired by disassembling the connecting member 3, a first limiting ring 5 is provided on the side of the connecting member 3 close to the protective mirror 4, and the protective mirror 4 can be installed and fixed, a photosensitive sensor 6 is provided in the middle of the mounting ring 2, and a gear ring 9 is fixedly connected to the side of the mounting ring 2 close to the module ring 1;

[0029] Limit bolts 7 are symmetrically inserted around the mounting ring 2, a filter 8 is provided in the middle of the gear ring 9, a first connecting ring 10 and a second connecting ring 18 are fixedly connected to the two sides of the module ring 1, a limiting slide groove 11 is provided on the outer surface of the first connecting ring 10, and the second limiting ring 12 is symmetrically fixedly connected to the two sides of the inner cavity of the module ring 1. One end of the limiting bolt 7 is inserted into the interior of the first connecting ring 10, so as to facilitate the connection between the module ring 1 and the mounting ring 2, and the gear ring 9 is driven to rotate by rotating the mounting ring 2, and the infrared light in the incident light is reflected and filtered by the filter 8, and the module ring 1 is conveniently connected to the mounting ring 2 through the first connecting ring 10;

[0030] A placement ring 13 is provided in the middle of the module ring 1, and threaded rods 16 are symmetrically inserted on both sides of the placement ring 13, and one end of the threaded rod 16 is fixedly connected to a transmission gear 17. A light-transmitting mirror 14 and a limiting screw ring 15 are provided in the middle of the placement ring 13. The light-transmitting mirror 14 is squeezed by threading the limiting screw ring 15 with the placement ring 13, so that the light-transmitting mirror 14 can be fixed in the middle of the placement ring 13, which is convenient for installing and disassembling the light-transmitting mirror 14. The rotation of the transmission gear 17 can control the rotation of the threaded rod 16, so that the placement ring 13 can move horizontally inside the module ring 1, thereby realizing the zoom effect. The light-transmitting mirror 14, the protective mirror 4, and the filter 8 are all made of flint glass and crown glass as lens glass. By adding oxides of lanthanide metal cerium and lead compounds to some grades, the optical performance and radiation resistance of the zoom lens are improved, and the radiation resistance effect is realized.

[0031] As attached Figure 2 , 3 As shown, one end of the first connecting ring 10 extends to one side of the mounting ring 2 and is located on the surface of the gear ring 9, the limiting bolt 7 corresponds to the limiting slide groove 11, and one end of the limiting bolt 7 extends to the inside of the limiting slide groove 11. The first connecting ring 10 is connected to the mounting ring 2, and one end of the limiting bolt 7 extends to the inside of the limiting slide groove 11. The module ring 1 can be connected to the mounting ring 2 without affecting the rotation between the module ring 1 and the mounting ring 2, which is convenient for controlling the zoom.

[0032] As attached Figure 2 , 3 As shown in FIGS. 6 and 7 , the transmission gear 17 is located on both sides of the gear ring 9, the transmission gear 17 is meshed with the gear ring 9, the threaded rod 16 is threadedly connected with the placement ring 13, and the cross-sectional shape of the placement ring 13 is set to be "L"-shaped. The rotation of the transmission gear 17 is controlled by the rotation of the gear ring 9, so that the threaded rod 16 can be rotated, and the placement ring 13 can be moved in the middle of the module ring 1, so as to adjust the distance between the light transmitting mirror 14 and the filter 8 and the photosensitive sensor 6 to achieve the zoom effect.

[0033] As attached Figure 1 , 2 As shown in , 4, 5, and 6, the first limiting ring 5 is connected to the internal thread of the connecting member 3, the connecting member 3 is threadedly connected to the second connecting ring 18, the cross-sectional shape of the connecting member 3 is set to a "T" shape, and the protective mirror 4 is set on one side of the middle part of the connecting member 3. By positioning the protective mirror 4 between the connecting member 3 and the first limiting ring 5, the protective mirror 4 can be disassembled and replaced separately from one end of the module ring 1, and the protective mirror 4 can be disassembled and replaced conveniently, and is convenient for installation and use.

[0034] As attached Figure 4-7 As shown, the limiting screw ring 15 is threadedly connected to the placement ring 13, and the limiting slide bars 19 are symmetrically fixedly connected to the inner cavity of the module ring 1 on both sides. The placement ring 13 is symmetrically provided with sliding grooves corresponding to the limiting slide bars 19 on both sides. The limiting slide bar 19 is arranged in the middle of the sliding groove. By rotating the limiting screw ring 15 in the middle of the placement ring 13, the light transmitting mirror 14 located in the middle of the placement ring 13 can be squeezed and limited, thereby improving the installation stability of the light transmitting mirror 14, and through the cooperation of the limiting slide bar 19 and the sliding groove, the stability of the movement of the placement ring 13 can be improved.

[0035] As attached Figure 2 , 3 As shown, both ends of the threaded rod 16 extend to the middle of the second limiting ring 12 and are rotatably connected to the wall of the second limiting ring 12. Drive slots 20 are symmetrically provided on both sides of the inner cavity of the limiting screw ring 15. The drive slots 20 facilitate the rotational connection of the limiting screw ring 15 through a caliper, and the stability of the threaded rod 16 is improved through the second limiting ring 12.

[0036] As attached Figure 2 As shown, the materials of the protective mirror 4, the light-transmitting mirror 14 and the filter 8 are all any one of flint glass, crown glass and mixed glass with lanthanide metal cerium oxide added. By adding lanthanide metal cerium oxide and adding lead compounds to some brands, the optical performance and radiation resistance of the zoom lens are improved, thereby achieving the effect of radiation resistance.

[0037] Working principle of the utility model: when in use, the module ring 1 and the mounting ring 2 are connected by inserting the first connecting ring 10 into the middle part of the mounting ring 2, so that one end of the limiting bolt 7 corresponds to the limiting slide groove 11, and the limiting bolt 7 is rotated so that one end of the limiting bolt 7 extends to the inside of the limiting slide groove 11;

[0038] Then, the module ring 1 or the mounting ring 2 can be rotated to make the module ring 1 rotate relative to the mounting ring 2, and the transmission gear 17 can be driven to rotate through the gear ring 9, so that the threaded rod 16 drives the placement ring 13 to move inside the module ring 1, thereby adjusting the distance between the light-transmitting mirror 14 and the light-sensitive sensor 6 to achieve the effect of zooming;

[0039] Secondly, the protective mirror 4 is installed between the connecting member 3 and the first limiting ring 5 through the first limiting ring 5, and the connecting member 3 is threadedly connected to the second connecting ring 18, so that the connecting member 3 can be connected to the module ring 1, and the radiation resistance of the lens module can be improved through the protective mirror 4.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A radiation-resistant zoom lens module, comprising a module ring (1), characterized in that: A mounting ring (2) is provided on one side of the module ring (1), and a connecting piece (3) is provided on the other side; a protective mirror (4) is provided on one side of the inner cavity of the connecting piece (3); a first limiting ring (5) is provided on the side of the connecting piece (3) close to the protective mirror (4); a photosensor (6) is provided in the middle of the mounting ring (2); and a gear ring (9) is fixedly connected to the side of the mounting ring (2) close to the module ring (1); Limit bolts (7) are symmetrically inserted around the mounting ring (2), a filter (8) is arranged in the middle of the gear ring (9), a first connecting ring (10) and a second connecting ring (18) are respectively fixedly connected on both sides of the module ring (1), a limiting sliding groove (11) is provided on the outer surface of the first connecting ring (10), and a second limiting ring (12) is symmetrically fixedly connected on both sides of the inner cavity of the module ring (1); A placement ring (13) is arranged in the middle of the module ring (1), threaded rods (16) are symmetrically inserted on both sides of the placement ring (13), one end of the threaded rod (16) is fixedly connected to a transmission gear (17), and a light-transmitting mirror (14) and a limiting screw ring (15) are arranged in the middle of the placement ring (13).

2. The radiation-resistant zoom lens module according to claim 1, characterized in that: One end of the first connecting ring (10) extends to one side of the mounting ring (2) and is located on the surface of the gear ring (9); the limiting bolt (7) corresponds to the limiting slide groove (11); and one end of the limiting bolt (7) extends to the inside of the limiting slide groove (11).

3. The radiation-resistant zoom lens module according to claim 1, characterized in that: The transmission gear (17) is located on both sides of the gear ring (9), the transmission gear (17) is meshed with the gear ring (9), the threaded rod (16) is threadedly connected to the placement ring (13), and the cross-sectional shape of the placement ring (13) is set to be "L" shaped.

4. The radiation-resistant zoom lens module according to claim 1, characterized in that: The first limiting ring (5) is connected to the internal thread of the connecting piece (3), the connecting piece (3) is connected to the second connecting ring (18) by thread, the cross-sectional shape of the connecting piece (3) is set to be "T"-shaped, and the protective mirror (4) is arranged on one side of the middle part of the connecting piece (3).

5. The radiation-resistant zoom lens module according to claim 1, characterized in that: The limiting screw ring (15) is threadedly connected to the placement ring (13); the inner cavity of the module ring (1) is symmetrically fixedly connected with a limiting slide bar (19) on both sides; the placement ring (13) is symmetrically provided with a slide groove corresponding to the limiting slide bar (19); and the limiting slide bar (19) is arranged in the middle of the slide groove.

6. The radiation-resistant zoom lens module according to claim 1, characterized in that: The two ends of the threaded rod (16) respectively extend to the middle of the second limiting ring (12) and are rotatably connected to the wall of the second limiting ring (12). The inner cavity of the limiting screw ring (15) is symmetrically provided with driving slots (20).

7. The radiation-resistant zoom lens module according to claim 1, characterized in that: The protective mirror (4), the light-transmitting mirror (14) and the filter (8) are all made of any one of flint glass, crown glass and mixed glass with lanthanide metal cerium oxide added.

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