Camera polariscope and polariscope adjusting structure

Abstract

The utility model relates to the technical field of polariscopes, and discloses a polariscope adjusting structure, which comprises a first lens frame, a second lens frame, a first lens and a second lens, the first lens and the second lens are respectively mounted in the first lens frame and the second lens frame, the bottom surface of the second lens frame is fixedly connected with an inserting ring, and the outer wall of the first lens frame is provided with a threaded groove for mounting a camera. The inserting ring is movably inserted into the inner wall of the first mirror frame, and a plurality of arc grooves are formed in the outer wall of the inserting ring; the balls applying external thrust through the springs are mounted in the first lens frame, the insertion rings on the bottom surface of the second lens frame are inserted into the first lens frame, and the balls slide in the arc grooves in the outer walls of the insertion rings, so that the balls are matched with the arc grooves when the second lens frame is rotated to rotate the second lens to adjust the angle between the second lens and the first lens; when the second lens frame is manually rotated, the balls and the arc grooves are used for positioning, fine adjustment of the polariscope is facilitated, the polariscope is rotated to a satisfactory polarization angle, and use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of polarizing mirrors, in particular to a camera polarizing mirror and a polarizing mirror adjusting structure. Background Art

[0002] Camera polarizing filter (also called polarizing filter or PL filter) is a lens manufactured based on the principle of light polarization. It is used to exclude and filter out direct light in the light beam so that the light can enter the eye's visual image along the correct transmission axis, thereby making the field of vision clear and natural. It is usually installed on the camera lens by means of threads.

[0003] The existing double-lens polarizing glasses are composed of two layers of lenses. The lens located on the outer layer can be rotated to adjust the polarization direction of the two lenses, thereby polarizing the light.

[0004] The double-lens polarizer in the prior art directly adjusts the polarization direction of the lens by manually twisting the outer frame, but it is not easy to fine-tune the polarizer by relying solely on the manual rotation force, and it is not convenient to adjust the polarizer to a satisfactory angle, which affects the use. Therefore, a camera polarizer and a polarizer adjustment structure are proposed. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a camera polarizing filter and a polarizing filter adjustment structure, which facilitates fine adjustment of the polarizing filter, and further enables the polarizing filter to be adjusted to a required angle to exclude external light.

[0006] The first aspect: In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polarizing filter adjustment structure, comprising a first frame, a second frame and a first lens and a second lens respectively installed in the first frame and the second frame, the bottom surface of the second frame is fixedly connected with a plug-in ring, the outer wall of the first frame is provided with a threaded groove for installation with a camera, the plug-in ring is movably plugged into the inner wall of the first frame, the outer wall of the plug-in ring is provided with a plurality of arc grooves, the inner wall of the first frame is provided with a mounting hole, a ball is slidably connected in the mounting hole, the inner wall of the mounting hole close to the inner wall of the first frame is an arc-shaped closing structure, a spring for pushing the ball outward is installed in the mounting hole, part of the ball is passed through the outside of the mounting hole, and the ball is slidably connected to the arc groove on the outer wall of the plug-in ring.

[0007] Preferably, one end of the mounting hole away from the inner wall of the first frame is an open structure, a threaded column is threadedly connected to the mounting hole, and one end of the spring abuts against one side of the threaded column.

[0008] Preferably, an arc-shaped groove is formed on the outer wall of the plug-in ring, and the ball is slidably connected to the inner wall of the arc-shaped groove.

[0009] Preferably, the distance between the arc opening groove and the second lens frame is greater than the distance between the arc groove and the second lens frame.

[0010] Preferably, the number of mounting holes opened on the first lens frame is four, and the four mounting holes are evenly distributed on the first lens frame.

[0011] Preferably, the outer wall of the first mirror frame is provided with two clearance openings, and the outer wall diameter of the second mirror frame is equal to the outer wall arc surface diameter of the upper end of the first mirror frame.

[0012] A second aspect: A camera polarizer, comprising the polarizer adjustment structure described in any one of the first aspects.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model installs a ball bearing to which an external thrust is applied by a spring in a first frame, and a plug-in ring on the bottom surface of a second frame is plugged into the first frame. The ball bearing slides with a plurality of arc grooves on an outer wall of the plug-in ring. When the second frame is rotated to rotate the second lens to adjust its angle with the first lens, the cooperation between the ball bearing and the arc groove can apply damping. When the second frame is manually rotated, the ball bearing and the arc groove are used for positioning, which facilitates fine-tuning of the polarizer to a satisfactory polarization angle for easy use.

[0015] 2. The utility model provides an arc groove on the plug-in ring so that the arc groove can be plugged outside the ball, thereby enabling the second lens frame to rotate without restriction. When fine-tuning is required, the arc groove can be moved outside the ball, thereby reducing wear and making the use more flexible.

[0016] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the first mirror frame of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the second mirror frame of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the connection between the first lens frame and the second lens frame of the utility model;

[0021] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0022] In the figure: 1. first lens frame; 2. second lens frame; 3. first lens; 4. second lens; 5. plug-in ring; 6. threaded groove; 7. mounting hole; 8. threaded column; 9. spring; 10. ball bearing; 11. arc groove; 12. arc mouth groove; 13. clearance mouth. DETAILED DESCRIPTION

[0023] 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 technical field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] See also Figure 1-5 The polarizer adjustment structure of this embodiment includes a first frame 1, a second frame 2, and a first lens 3 and a second lens 4 respectively installed in the first frame 1 and the second frame 2, a plug-in ring 5 is fixedly connected to the bottom surface of the second frame 2, the outer wall of the first frame 1 is provided with a threaded groove 6 for installation with a camera, the plug-in ring 5 is movably plugged with the inner wall of the first frame 1, the outer wall of the plug-in ring 5 is provided with a plurality of arc grooves 11, the inner wall of the first frame 1 is provided with a mounting hole 7, a ball 10 is slidably connected in the mounting hole 7, the inner wall of the mounting hole 7 at one end of the mounting hole 7 close to the inner wall of the first frame 1 is an arc-shaped closing structure, a spring 9 for pushing the ball 10 outward is installed in the mounting hole 7, a part of the ball 10 is passed through the outside of the mounting hole 7, and the ball 10 is slidably connected to the arc groove 11 on the outer wall of the plug-in ring 5.

[0026] like Figure 1-5As shown, the structure of the polarizer in the utility model is similar to the existing polarizer structure. The main improvement of the utility model is to facilitate fine-tuning of the polarizer, so that the polarizer can be adjusted to a desired angle to exclude external light. When the utility model is in use, the first frame 1 is first screwed onto the camera lens through the threaded groove 6 on its outer wall, and then the plug-in ring 5 on the side wall of the second frame 2 is plugged into the first frame 1. When the plug-in ring 5 is inserted into the first frame 1, it contacts and squeezes the part of the ball 10 protruding into the first frame 1, so that the ball 10 is completely moved into the mounting hole 7, and the ball 10 compresses the spring 9 until the plug-in ring 5 is completely inserted. In the first frame 1, the second frame 2 is rotated slightly back and forth at this time, and then the ball 10 slides into the arc groove 11 under the elastic force of the spring 9. When the angle between the second lens 4 and the first lens 3 needs to be adjusted, the second frame 2 is rotated, and the second frame 2 drives the plug-in ring 5 and the second lens 4 to rotate. The plug-in ring 5 squeezes the ball 10. When the arc groove 11 rotates to correspond to the ball 10, the ball 10 damps the rotation of the plug-in ring 5 through the elastic force of the spring 9 and the arc groove 11. Different from the completely manual rotation, a certain force can be applied to the second frame 2 for positioning, which is convenient for fine-tuning the polarizer so that it can be rotated to a satisfactory polarization angle for easy use.

[0027] like Figure 4 , 5 As shown, the end of the mounting hole 7 away from the inner wall of the first lens frame 1 is an open structure, and a threaded column 8 is connected to the inner thread of the mounting hole 7, and one end of the spring 9 is against one side of the threaded column 8; the threaded column 8 can be screwed out of the mounting hole 7, so that the ball 10 and the spring 9 can be taken out of the mounting hole 7 for replacement, which is convenient for maintenance.

[0028] like Figure 3-5 As shown, the outer wall of the plug-in ring 5 is provided with an arc groove 12, and the ball 10 is slidably connected to the inner wall of the arc groove 12; when there is no need to fine-tune the second lens 4, the arc groove 12 on the outer wall of the plug-in ring 5 is plugged to the outside of the ball 10. At this time, when the second frame 2 is rotated, the arc groove 12 and the outer wall of the ball 10 slide. At this time, the ball 10 does not apply damping to the plug-in ring 5, and then the second lens 4 can be rotated over a wide range to adjust the angle with less wear. When fine-tuning is needed, the plug-in ring 5 can be moved again to move the arc groove 11 to the outside of the ball 10, which is more flexible to use.

[0029] like Figure 3 , 5 As shown, the distance between the arc groove 12 and the second frame 2 is greater than the distance between the arc groove 11 and the second frame 2; when the plug-in ring 5 is inserted into the first frame 1, the arc groove 12 is first moved to the outside of the ball 10. At this time, the second lens 4 is first adjusted in a large range of angles, and then the plug-in ring 5 is pushed and inserted into the first frame 1, so that the arc groove 11 is moved to the outside of the ball 10, and the second lens 4 is fine-tuned in a small range.

[0030] like Figure 1 , 2 As shown in FIGS. 4 and 5 , the number of mounting holes 7 provided on the first lens frame 1 is four, and the four mounting holes 7 are evenly distributed on the first lens frame 1 ; the balls 10 in the plurality of mounting holes 7 cooperate with the arc grooves 11 to apply stable damping to the plug-in ring 5 , which is convenient for use.

[0031] like Figure 2 As shown, the outer wall of the first frame 1 is provided with two clearance openings 13, and the outer wall diameter of the second frame 2 is equal to the diameter of the outer wall arc surface at the upper end of the first frame 1; the clearance openings 13 make way for the second frame 2, and then when the second frame 2 is rotated at the clearance openings 13, it will not touch the first frame 1, thereby preventing the first frame 1 from loosening from the camera lens.

[0032] The implementation steps in this embodiment are as follows: when in use, first screw the first lens frame 1 onto the camera lens through the threaded groove 6 on its outer wall, and then insert the plug-in ring 5 on the side wall of the second lens frame 2 into the first lens frame 1. When the plug-in ring 5 is inserted, the arc groove 12 is first moved to the outside of the ball 10. At this time, the second lens frame 2 is rotated, and the ball 10 does not apply damping to the plug-in ring 5. At this time, the second lens 4 is rotated over a large range to adjust the angle, and the wear is small. When fine-tuning is required, the plug-in ring 5 can be moved again to move the arc groove 11 to the ball 1 0, at this time, the second lens frame 2 is slightly rotated back and forth, and then under the elastic force of the spring 9, the ball 10 slides into the arc groove 11, and then the second lens frame 2 is rotated, the second lens frame 2 drives the plug-in ring 5 and the second lens 4 to rotate, the plug-in ring 5 squeezes the ball 10, and when the arc groove 11 rotates to correspond to the ball 10, the ball 10 damps the rotation of the plug-in ring 5 through the elastic force of the spring 9 and the arc groove 11, and applies a certain force to position the second lens frame 2, thereby facilitating the adjustment of the prepared angle of the second lens 4.

[0033] Embodiment 2:

[0034] See also Figure 1-5 A camera polarizer of this embodiment includes the polarizer adjustment structure described in any one of the first embodiments.

[0035] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A polarizing lens adjustment structure, comprising a first lens frame (1), a second lens frame (2), and a first lens (3) and a second lens (4) respectively mounted in the first lens frame (1) and the second lens frame (2), characterized in that: The bottom surface of the second lens frame (2) is fixedly connected with a plug-in ring (5); the outer wall of the first lens frame (1) is provided with a threaded groove (6) for mounting with a camera; the plug-in ring (5) is movably plugged with the inner wall of the first lens frame (1); the outer wall of the plug-in ring (5) is provided with a plurality of arc grooves (11); the inner wall of the first lens frame (1) is provided with a mounting hole (7); a ball (10) is slidably connected in the mounting hole (7); the inner wall of one end of the mounting hole (7) close to the inner wall of the first lens frame (1) is an arc-shaped closing structure; a spring (9) for pushing the ball (10) outward is installed in the mounting hole (7); part of the ball (10) is inserted outside the mounting hole (7); the ball (10) is slidably connected with the arc groove (11) on the outer wall of the plug-in ring (5).

2. A polarizer adjustment structure according to claim 1, characterized in that: One end of the mounting hole (7) away from the inner wall of the first mirror frame (1) is an open structure, a threaded column (8) is connected to the inner thread of the mounting hole (7), and one end of the spring (9) abuts against one side of the threaded column (8).

3. The polarizer adjustment structure according to claim 1, characterized in that: An arc-shaped groove (12) is formed on the outer wall of the plug-in ring (5), and the ball (10) is slidably connected to the inner wall of the arc-shaped groove (12).

4. The polarizer adjustment structure according to claim 3, characterized in that: The distance between the arc groove (12) and the second mirror frame (2) is greater than the distance between the arc groove (11) and the second mirror frame (2).

5. The polarizer adjustment structure according to claim 1, characterized in that: The number of mounting holes (7) provided on the first mirror frame (1) is four, and the four mounting holes (7) are evenly distributed on the first mirror frame (1).

6. The polarizer adjustment structure according to claim 1, characterized in that: The outer wall of the first mirror frame (1) is provided with two clearance openings (13), and the outer wall diameter of the second mirror frame (2) is equal to the outer wall arc surface diameter of the upper end of the first mirror frame (1).

7. A camera polarizing filter, characterized in that: The invention comprises the polarizer adjustment structure described in any one of claims 1 to 6.

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