Optical element clamp

Abstract

The utility model discloses an optical element clamp which comprises a lantern ring and a plurality of buffering pieces, a first convex ring is coaxially arranged on the inner side of the lower portion of the lantern ring, the inner diameter of the first convex ring is smaller than the outer diameter of an optical element, the outer diameter of the first convex ring is larger than the outer diameter of the optical element, and a plurality of groove bodies are evenly formed in the inner wall of the lantern ring in the circumferential direction. The buffer pieces are fixedly connected in the groove bodies respectively, and the inscribed circle radius of the upper portions of the buffer pieces in the natural state is matched with the outer diameter of the optical element. According to the utility model, the first convex ring can provide support for the inner sides of the lower parts of all the buffer pieces, so that the edge of the optical element is supported through the inner sides of the lower parts of all the buffer pieces, the inner wall of the lantern ring can clamp the optical element together through the upper parts of all the buffer pieces, and meanwhile, the buffer pieces can play a buffering role between the lantern ring and the optical element; the optical element is prevented from being in direct contact with the metal frame, so that the optical element is clamped on the premise that the edge breakage risk of the optical element is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical element clamping, and in particular relates to an optical element clamp. Background Art

[0002] Currently, fixtures made of aluminum alloy or brass are commonly used to clamp large-aperture optical components. However, due to the different materials of the optical component and the fixture, their thermal expansion coefficients do not match, making it difficult to reserve tolerances for the fixture during machining. Specifically, if the tolerance is too large, the edges of the optical component will loosen or shift, resulting in an asymmetric aperture. If the tolerance is too small, the optical component will suffer edge collapse and damage due to thermal expansion in a vacuum and high-temperature environment, and the optical component may become stuck in the fixture, making it difficult to remove. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides an optical element clamp, which can clamp the optical element while avoiding the risk of edge chipping of the optical element.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An optical element fixture, comprising:

[0006] A collar, wherein a first convex ring is coaxially arranged on the inner side of the lower portion of the collar, wherein the inner diameter of the first convex ring is smaller than the outer diameter of the optical element, and the outer diameter of the first convex ring is larger than the outer diameter of the optical element, and the inner wall of the collar is uniformly provided with a plurality of grooves along the circumference, wherein the lower ends of the grooves are not lower than the upper end of the first convex ring;

[0007] A plurality of buffers are fixedly connected to the plurality of grooves respectively, the inscribed circle radius of the lower portion of the plurality of buffers matches the inner diameter of the first convex ring, and the inscribed circle radius of the upper portion of the plurality of buffers in a natural state matches the outer diameter of the optical element.

[0008] The beneficial effects of adopting the above technical solution are: the first convex ring can provide support for the lower inner side of all buffers, so as to provide support for the edge of the optical element through the lower inner side of all buffers, and the inner wall of the ring can clamp the optical element together through the upper part of all buffers. At the same time, the buffer can play a buffering effect between the ring and the optical element to avoid direct contact between the optical element and the metal frame, thereby clamping the optical element while reducing the risk of edge collapse of the optical element.

[0009] In one embodiment, the buffer is provided with an embedding portion and a supporting portion for providing support for the optical element, the outer side of the embedding portion is embedded in the groove body, and the supporting portion is located directly above the first convex ring.

[0010] The beneficial effects of adopting the above technical solution are: the support part of the buffer is placed on the first convex ring, so that the first convex ring provides support for the support part, thereby ensuring that the support parts of all buffer parts can provide stable support for the edge of the optical element; the outer side of the embedded part is embedded in the groove body to limit the position of the buffer part, thereby ensuring the installation position of the buffer part.

[0011] In one embodiment, the outer dimensions of the embedded portion match the dimensions of the groove body.

[0012] The beneficial effect of adopting the above technical solution is that such an arrangement is conducive to accurately positioning the buffer member and embedding it into the groove body.

[0013] In one embodiment, the buffer is screwed into the slot.

[0014] The beneficial effect of adopting the above technical solution is that the buffer is fixedly connected to the ring by such arrangement.

[0015] In one embodiment, a threaded hole is provided on the outer side of the trough body, and a stepped hole for installing a screw is provided on the buffer member. The head of the screw is located in the inner hole of the stepped hole, and the rod of the screw passes through the outer hole of the stepped hole and is threadedly connected to the threaded hole.

[0016] The beneficial effects of adopting the above technical solution are: the buffer is fastened to the ring by passing the rod of the screw through the outer hole of the step hole and then threadedly connected to the threaded hole; the head of the screw is located in the inner hole of the step hole, which can avoid affecting the clamping of the optical element due to the exposure of the screw head.

[0017] In one embodiment, the sum of the depths of the outer hole of the stepped hole and the threaded hole is not less than the length of the shank of the screw, and the depth of the inner hole of the stepped hole is greater than the length of the head of the screw.

[0018] The beneficial effect of adopting the above technical solution is that: after the screw is tightened, the head of the screw contacts the bottom of the inner hole of the step hole, thereby preventing the head of the screw from being exposed outside the step hole.

[0019] In one embodiment, the upper end of the groove is flush with the upper end of the collar.

[0020] The beneficial effect of adopting the above technical solution is that such an arrangement facilitates the insertion of the buffer component into the slot from top to bottom, thereby facilitating the installation of the buffer component.

[0021] In one embodiment, a second protruding ring is provided on the outer side of the collar.

[0022] The beneficial effect of adopting the above technical solution is that: such an arrangement makes it convenient to utilize the protruding portion of the second convex ring to clamp on the workbench, thereby facilitating the installation of the optical element fixture.

[0023] In one embodiment, the buffer member is a polytetrafluoroethylene member.

[0024] In one embodiment, the collar is an aluminum alloy ring.

[0025] The beneficial effects of the present invention are:

[0026] The first convex ring can provide support for the lower inner sides of all buffers, so as to provide support for the edge of the optical element through the lower inner sides of all buffers. The inner wall of the ring can clamp the optical element together through the upper parts of all buffers. At the same time, the buffer can play a buffering effect between the ring and the optical element to avoid direct contact between the optical element and the metal frame, thereby clamping the optical element while reducing the risk of edge collapse of the optical element. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0028] in:

[0029] Figure 1 Shows a schematic structural diagram of an embodiment of the present utility model;

[0030] Figure 2 Shows Figure 1 Cross-sectional view at AA in the middle;

[0031] Figure 3 Shows a schematic structural diagram of the buffer member in the present invention;

[0032] Figure 4 Shows Figure 3 Cross-sectional view at the middle BB;

[0033] In the drawings, like reference numerals are used for like parts, but the drawings are not necessarily true to scale.

[0034] Reference numerals:

[0035] 1-ring, 101-first convex ring, 102-groove body, 103-threaded hole, 104-second convex ring, 2-buffer, 201-embedded part, 202-support part, 203-step hole. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] The utility model provides an optical element fixture, such as Figure 1 and Figure 2 As shown, it includes:

[0038] The inner side of the lower portion of the collar 1 is coaxially provided with a first protruding ring 101. The inner diameter of the first protruding ring 101 is smaller than the outer diameter of the optical element, and the outer diameter of the first protruding ring 101 is larger than the outer diameter of the optical element. The inner wall of the collar 1 is evenly provided with four grooves 102 along the circumference, and the lower ends of the grooves 102 are not lower than the upper ends of the first protruding ring 101.

[0039] Four buffer members 2 are fixedly connected to the four groove bodies 102 respectively. The radius of the inscribed circle of the lower portion of the four buffer members 2 matches the inner diameter of the first convex ring 101. The radius of the inscribed circle of the upper portion of the four buffer members 2 in the natural state matches the outer diameter of the optical element.

[0040] The optical element may be a lens.

[0041] It can be understood that the first convex ring 101 can provide support for the lower inner sides of all buffers 2, so as to provide support for the edge of the optical element through the lower inner sides of all buffers 2. The inner wall of the ring 1 can clamp the optical element together through the upper parts of all buffers 2, and it can also help to make the light aperture symmetrical; at the same time, the buffer 2 can play a buffering effect between the ring 1 and the optical element to avoid direct contact between the optical element and the metal frame, thereby clamping the optical element while reducing the risk of edge collapse of the optical element.

[0042] It should be noted that the radius of the inscribed circle of the upper part of the four buffers 2 in the natural state is slightly smaller than the outer diameter of the optical element, so that the optical element is in a compressed state after being installed between all the buffers 2, that is, all the buffers 2 can provide a certain pressure for the optical element, which is conducive to clamping the optical element.

[0043] Specifically, the buffer member 2 can be a polytetrafluoroethylene member, which is relatively soft and can provide a buffering effect for the optical element. The ring 1 is an aluminum alloy ring, and the cross-sectional shape of the groove body 102 can be semicircular.

[0044] In one embodiment, Figure 3 and Figure 4 As shown, the buffer 2 is provided with an embedding portion 201 and a supporting portion 202 for providing support for the optical element. The outer side of the embedding portion 201 is embedded in the groove body 102 , and the supporting portion 202 is located directly above the first convex ring 101 .

[0045] It can be understood that the support portion 202 of the buffer 2 is placed on the first convex ring 101 so that the first convex ring 101 provides support for the support portion 202, thereby ensuring that the support portion 202 of all buffers 2 can provide stable support for the edge of the optical element; the outer side of the embedded portion 201 is embedded in the groove body 102 to limit the position of the buffer 2, thereby ensuring the installation position of the buffer 2.

[0046] In one embodiment, the outer dimensions of the embedded portion 201 match the dimensions of the slot body 102 , so as to facilitate accurate positioning of the buffer member 2 and embedding it into the slot body 102 .

[0047] In one embodiment, the buffer member 2 is screwed into the slot 102 to fix the buffer member 2 to the collar 1; wherein the screw can be a hexagon socket screw.

[0048] In one embodiment, Figure 2 and Figure 4 As shown, a threaded hole 103 is provided on the outer side of the groove body 102, and a stepped hole 203 for installing a screw is provided on the buffer part 2. The head of the screw is located in the inner hole of the stepped hole 203, and the rod of the screw passes through the outer hole of the stepped hole 203 and is threadedly connected with the threaded hole 103.

[0049] It can be understood that the buffer 2 is fastened to the ring 1 by passing the rod of the screw through the outer hole of the step hole 203 and then threadedly connected to the threaded hole 103; the head of the screw is located in the inner hole of the step hole 203, which can avoid affecting the clamping of the optical element due to the exposure of the screw head.

[0050] In one embodiment, the sum of the depths of the outer hole of the stepped hole 203 and the threaded hole 103 is not less than the length of the screw shaft, and the depth of the inner hole of the stepped hole 203 is greater than the length of the screw head, so that after the screw is tightened, the head of the screw contacts the bottom of the inner hole of the stepped hole 203, thereby preventing the head of the screw from being exposed outside the stepped hole 203.

[0051] In one embodiment, the upper end of the groove body 102 is flush with the upper end of the collar 1 , so as to facilitate the insertion of the buffer member 2 into the groove body 102 from top to bottom, thereby facilitating the installation of the buffer member 2 .

[0052] In one embodiment, a second convex ring 104 is provided on the outer side of the collar 1 so as to facilitate the use of the protruding portion of the second convex ring 104 to clamp on the workbench, thereby facilitating the installation of the optical element fixture.

[0053] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0054] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It should be understood that many modifications may be made to the illustrative embodiments, and that other arrangements may be devised, without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in ways other than those described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be employed in conjunction with other described embodiments.

Claims

1. An optical element fixture, characterized in that: include: A collar (1), wherein a first convex ring (101) is coaxially arranged on the inner side of the lower portion of the collar (1), the inner diameter of the first convex ring (101) is smaller than the outer diameter of the optical element, and the outer diameter of the first convex ring (101) is larger than the outer diameter of the optical element; a plurality of grooves (102) are uniformly arranged on the inner wall of the collar (1) along the circumference, and the lower ends of the grooves (102) are not lower than the upper ends of the first convex ring (101); A plurality of buffer members (2), wherein the plurality of buffer members (2) are fixedly connected to the plurality of groove bodies (102), respectively, the inscribed circle radius of the lower portion of the plurality of buffer members (2) matches the inner diameter of the first convex ring (101), and the inscribed circle radius of the upper portion of the plurality of buffer members (2) in a natural state matches the outer diameter of the optical element.

2. The optical element fixture according to claim 1, wherein: The buffer member (2) is provided with an embedding portion (201) and a supporting portion (202) for providing support for the optical element, the outer side of the embedding portion (201) is embedded in the groove body (102), and the supporting portion (202) is located directly above the first convex ring (101).

3. The optical element holder according to claim 2, wherein: The outer dimensions of the embedded portion (201) match the dimensions of the trough body (102).

4. The optical element fixture according to claim 1, wherein: The buffer member (2) is screw-connected in the slot body (102).

5. The optical element holder according to claim 4, characterized in that: A threaded hole (103) is provided on the outer side of the trough body (102), and a stepped hole (203) for installing the screw is provided on the buffer member (2), the head of the screw is located in the inner hole of the stepped hole (203), and the rod of the screw passes through the outer hole of the stepped hole (203) and is threadedly connected to the threaded hole (103).

6. The optical element holder according to claim 5, characterized in that: The sum of the depths of the outer hole of the step hole (203) and the threaded hole (103) is not less than the length of the shank of the screw, and the depth of the inner hole of the step hole (203) is greater than the length of the head of the screw.

7. The optical element holder according to claim 1, wherein: The upper end of the groove body (102) is flush with the upper end of the collar (1).

8. The optical element holder according to claim 1, wherein: A second convex ring (104) is provided on the outer side of the collar (1).

9. The optical element holder according to claim 1, wherein: The buffer component (2) is a polytetrafluoroethylene component.

10. The optical element holder according to claim 1, wherein: The sleeve ring (1) is an aluminum alloy ring.

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