Temperature compensation lens and vehicle
By setting a boss on the lens barrel, the extrusion problem caused by expansion and contraction of traditional optical lenses under high or low temperature conditions is solved, the stability of the optical effective part of the lens is achieved and the imaging quality is improved.
Patent Information
- Application Number
- CN202421514531.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Under high or low temperature conditions, traditional optical lenses have different expansion and contraction amounts of lenses, spacers and barrels in axial and radial directions, which leads to extrusion between components, affecting optical performance, resulting in changes in the imaging surface position and degradation of image resolution.
A temperature compensation lens is designed. By providing several bosses on the lens barrel, the lens and the boss are in contact, and there is a radial gap between the boss and the lens barrel body to avoid excessive squeeze pressure. The squeeze pressure is unloaded through the deformation of the boss, and the optical effective part of the lens remains unchanged.
It effectively avoids deformation of the optical effective part of the lens, improves the imaging quality of the temperature-compensated lens, and ensures that the optical performance of the lens is not affected under high and low temperature conditions.
Smart Images
Figure CN222689961U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of imaging lenses, in particular to a temperature compensation lens and a vehicle. Background Art
[0002] Optical lenses have the function of light transmission and are widely used in various imaging fields such as automotive, security, and intelligent manufacturing. As a precision optical component, optical lenses have strict requirements on manufacturing and installation accuracy, and their imaging performance is sensitive to different temperatures. Optical lenses are usually installed in the lens barrel in a superimposed or interlocked manner. During assembly, they are circumferentially fixed by the inner wall of the lens barrel and axially fixed by locking rings, front rings, spacers, and lens barrels. However, under high or low temperature conditions, due to the different axial and radial expansion and contraction of the lenses, spacers, and lens barrels, extrusion occurs between the components, causing deformation of the optical effective diameter and thus affecting the optical performance; that is, at high temperatures, the traditional lens has a radial expansion greater than the radial expansion of the lens barrel, causing the effective diameter of the lens to be squeezed and deformed, resulting in changes in the surface shape and lens curvature radius (the optical effective area is squeezed and affects the imaging), which in turn causes changes in the position of the imaging surface and leads to a decrease in the resolution of the lens.
[0003] Therefore, it is necessary to provide an optical lens that does not affect the optical effective area under high and low temperature conditions to solve the above problems. Utility Model Content
[0004] In view of the above problems, the purpose of the present invention is to provide a temperature compensation lens and a vehicle, which can avoid deformation of the optically effective part of the lens and have the advantage of excellent imaging quality.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] The utility model provides a temperature compensation lens, comprising an optical axis, a lens barrel and a lens, wherein the lens barrel comprises a lens barrel body, a lens accommodating space and a plurality of bosses, wherein the lens barrel body surrounds the optical axis to form the lens accommodating space, the bosses are arranged on the lens barrel body at intervals and are located in the lens accommodating space, and a radial gap is provided between the bosses and the lens barrel body; the lens is assembled in the lens accommodating space and abuts against the bosses.
[0007] Further preferably, the number of the bosses is at least 2 and the plurality of bosses are evenly distributed around the optical axis.
[0008] Further preferably, the radial thickness of the boss is less than 2 mm.
[0009] Further preferably, the axial height of the boss is greater than 0.5 mm.
[0010] Further preferably, the lens includes a mounting portion, the mounting portion is arranged on the outer peripheral side of the lens, and the mounting portion abuts against the boss.
[0011] Further preferably, the thickness of the mounting portion along the optical axis direction is smaller than the thickness of the lens.
[0012] Further preferably, the axial height of the abutment area between the mounting portion and the boss is smaller than the axial height of the boss.
[0013] Further preferably, the mounting portion abuts against an object-side end of the boss close to the temperature compensation lens in the axial direction.
[0014] Further preferably, the temperature compensation lens further comprises a buffer groove, and the buffer groove is located at the connection between the boss and the lens barrel body.
[0015] In addition, the utility model also provides a vehicle, comprising the above-mentioned temperature compensation lens.
[0016] The beneficial effects of the utility model are:
[0017] The temperature compensation lens structure provided by the utility model can avoid deformation of the optically effective part of the lens. By arranging a boss on the lens barrel, when the lens is subjected to extrusion force from the radial direction, the extrusion force can be transmitted to the boss, and the extrusion force can be unloaded by the deformation of the boss, thereby avoiding deformation of the optically effective part of the lens and improving the imaging quality of the temperature compensation lens. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 It is a schematic diagram of the structure of the utility model;
[0020] Figure 2 It is a structural schematic diagram of the boss in the utility model;
[0021] Figure 3 for Figure 1 A is an enlarged schematic diagram;
[0022] Illustration: 1-optical axis, 2-lens barrel, 201-boss, 202-lens barrel body, 203-lens accommodating space, 204-radial gap, 205-buffer groove, 3-lens, 301-mounting part.
[0023] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0024] In order to better understand the utility model, a more detailed description of various aspects of the utility model will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of embodiments of the utility model, and do not limit the scope of the utility model in any way. Throughout the specification, the same figure numbers refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.
[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.
[0026] It should also be understood that the terms "comprises", "including", "having", "includes" and / or "comprising", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present invention, "may" is used to mean "one or more embodiments of the present invention". And, the term "exemplary" is intended to refer to an example or illustration.
[0027] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which the utility model belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.
[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0029] like Figures 1 to 3As shown, the utility model provides a temperature compensation lens, including an optical axis 1, a lens barrel 2 and a lens 3, the lens barrel 2 including a lens barrel body 202, a lens accommodating space 203 and a plurality of bosses 201, the lens barrel body 202 surrounds the optical axis 1 to form the lens accommodating space 203, the bosses 201 are spaced apart on the lens barrel body 202 and are located in the lens accommodating space 203, and a radial gap 204 is provided between the bosses 201 and the lens barrel body 202; the lens 3 is assembled in the lens accommodating space 203 and abuts against the bosses 201. In order to alleviate the extrusion of the lens 3 by the lens barrel 2 in the radial direction, the present application sets a boss 201 on the lens barrel body 202. In the case that the high-temperature expansion of the lens 3 is greater than the expansion of the lens barrel 2 or the low-temperature contraction of the lens 3 is less than the contraction of the lens barrel 2 in the radial direction, there will be extrusion deformation in the radial direction. For this reason, the lens barrel 2 sets a boss 201 to match the outer diameter of the lens 3. Because there is a radial gap 204 between the boss 201 matched with the lens 3 and the temperature compensation lens body, by controlling the matching position with the lens 3, when extruding, the deformation is concentrated on the boss 201 of the lens barrel 2, so as to avoid the lens 3 being subjected to excessive stress, resulting in the change of the surface shape of the lens 3 and affecting the imaging of the temperature compensation lens. That is, when the lens 3 is subjected to the extrusion force in the radial direction, the extrusion force can be transmitted to the boss 201, and the radial gap 204 between the boss 201 and the lens body can unload the radial extrusion force, so as to avoid the deformation of the optical effective part of the lens 3. It should be noted that the direction parallel to the optical axis 1 of the temperature compensation lens is defined as the axial direction of the temperature compensation lens, and the direction extending along the outer diameter of the lens 3 is defined as the radial direction of the temperature compensation lens.
[0030] More specifically, the number of bosses 201 is at least two and the bosses 201 are evenly spaced around the optical axis 1 , so that the radial squeezing force on the bosses 201 can be evenly distributed and the force on the lens 3 can be evenly distributed.
[0031] In order to make the boss 201 easier to bear force, the radial thickness of the boss 201 is less than 2mm, and the axial height of the boss 201 is greater than 0.5mm. The smaller thickness and larger height of the boss 201 (the force arm of the boss 201 is longer) can make the boss 201 easier to deform under force and better unload the extrusion force.
[0032] In order to further reduce the deformation of the optically effective portion of the lens 3 , the lens 3 includes a mounting portion 301 . The mounting portion 301 is disposed on the outer peripheral side of the lens 3 , and the mounting portion 301 abuts against the boss 201 .
[0033] More specifically, the thickness of the mounting portion 301 along the optical axis 1 is smaller than the thickness of the lens 3, and the axial height of the abutment area between the mounting portion 301 and the boss 201 is smaller than the axial height of the boss 201, so that the lens 3 and the boss 201 can be better abutted, and the squeezing force of the lens 3 is concentrated on the boss 201, squeezing the boss 201 to deform and avoid affecting the lens 3.
[0034] The mounting portion 301 abuts against the object side end of the boss 201 close to the temperature compensation lens in the axial direction to facilitate deformation of the boss 201. It can be understood that the object side end of the temperature compensation lens refers to the end close to the object side.
[0035] The temperature compensation lens further includes a buffer groove 205 , which is located at the connection between the boss 201 and the lens barrel body 202 , so as to facilitate the boss 201 to better withstand force and deform.
[0036] In addition, the utility model also provides a vehicle, comprising the above-mentioned temperature compensation lens.
[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A temperature compensation lens, comprising an optical axis (1), a lens barrel (2) and a lens (3), characterized in that: The lens barrel (2) comprises a lens barrel body (202), a lens accommodating space (203) and a plurality of bosses (201); the lens barrel body (202) surrounds the optical axis (1) to form the lens accommodating space (203); the bosses (201) are arranged on the lens barrel body (202) at intervals and are located in the lens accommodating space (203); a radial gap (204) is provided between the bosses (201) and the lens barrel body (202); and the lens (3) is assembled in the lens accommodating space (203) and abuts against the bosses (201).
2. A temperature compensation lens according to claim 1, characterized in that: The number of the bosses (201) is at least 2, and the plurality of bosses (201) are evenly spaced and distributed around the optical axis (1).
3. A temperature compensation lens according to claim 1, characterized in that: The radial thickness of the boss (201) is less than 2 mm.
4. A temperature compensation lens according to claim 1, characterized in that: The axial height of the boss (201) is greater than 0.5 mm.
5. The temperature compensation lens according to claim 1, characterized in that: The lens (3) comprises a mounting portion (301), wherein the mounting portion (301) is arranged on the outer peripheral side of the lens (3), and the mounting portion (301) abuts against the boss (201).
6. A temperature compensation lens according to claim 5, characterized in that: The thickness of the mounting portion (301) along the direction of the optical axis (1) is smaller than the thickness of the lens (3).
7. The temperature compensation lens according to claim 5, characterized in that: The axial height of the area where the mounting portion (301) abuts against the boss (201) is smaller than the axial height of the boss (201).
8. The temperature compensation lens according to claim 5, characterized in that: The mounting portion (301) abuts against the object side end of the boss (201) close to the temperature compensation lens in the axial direction.
9. The temperature compensation lens according to claim 1, characterized in that: The temperature compensation lens further comprises a buffer groove (205), and the buffer groove (205) is located at the connection between the boss (201) and the lens barrel body (202).
10. A vehicle, characterized in that: It comprises a temperature compensation lens as described in any one of claims 1 to 9.