Lens and vehicle
By optimizing the design and setting of the spacer and flange part on the thickness of the barrel wall, the extrusion deformation problem of the optical lens under temperature drift conditions is solved, and the stability and performance of the lens are improved.
Patent Information
- Application Number
- CN202421114328.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Extrusion deformation of existing optical lenses due to the differences in expansion and contraction of the lens, spacer and lens barrel under high or low temperature conditions affects the optical performance, resulting in severe temperature drift movement and cannot meet customer needs.
By performing an optimized design on the thickness of the barrel wall, the thickness of the first mounting part and the second mounting part are arranged to be different, the first thickness is smaller than the second thickness, and a spacer and a flange portion are provided in the barrel to reduce radial direction force, reduce the radial force and temperature float of the lens.
It effectively reduces the radial force of the lens, reduces the deformation of the optical effective part of the lens, improves the stability and performance of the lens, and reduces the temperature drift.
Smart Images
Figure CN222280925U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of imaging lenses, in particular to a 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 (in the radial direction, extrusion deformation occurs in the radial direction because the high-temperature expansion of the lens is greater than the expansion of the lens barrel or the low-temperature contraction of the lens is less than the contraction of the lens barrel).
[0003] The existing lens barrel design generally considers installation boundaries, processing convenience, etc. The general lens barrel wall thickness is relatively uniform, but due to the extrusion between the lens barrel and the lens, the temperature drift movement is caused, which cannot meet the needs of customers. Different lenses have different sensitivities to temperature drift. The greater the thickness, the greater the radial force, the greater the change in the lens surface shape, and the more intense the temperature drift movement. In order to reduce the influence of the radial force of the entire lens, the thickness of the lens barrel wall on the outside of each lens needs to be designed to reduce the influence of the radial force on the temperature drift. Utility Model Content
[0004] In view of the above problems, the purpose of the present utility model is to provide a lens and a vehicle, which can effectively reduce the radial force of the lens, reduce temperature drift, and improve the stability of the lens.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] The utility model provides a lens, comprising a lens barrel and a lens group, wherein the lens group is arranged in the lens barrel;
[0007] The lens group comprises a first lens and a second lens, the object side surface and / or the image side surface of the first lens is a concave surface at the near optical axis, and the object side surface and the image side surface of the second lens are both convex surfaces at the near optical axis;
[0008] The lens barrel includes a first mounting portion and a second mounting portion, the outer side wall of the first lens abuts against the first mounting portion, and the outer side wall of the second lens abuts against the second mounting portion; the first mounting portion has a first thickness in a direction perpendicular to the optical axis, and the second mounting portion has a second thickness in a direction perpendicular to the optical axis, and the first thickness is less than the second thickness.
[0009] Further preferably, the first thickness is 0.3 mm to 1.3 mm.
[0010] Further preferably, the first thickness is 0.5 mm.
[0011] Further preferably, the second thickness is 1.4 mm to 3 mm.
[0012] Further preferably, the second thickness is 1.5 mm.
[0013] Further preferably, the lens further comprises a flange portion and a spacer, wherein the spacer is arranged in the lens barrel and clamped between the lenses of the lens group, and the flange portion is arranged at an outer middle position of the lens barrel.
[0014] Further preferably, the lens group also includes a third lens, the object side surface and the image side surface of the third lens are both convex surfaces at the near optical axis, the third lens is arranged close to the object side end of the lens barrel, the lens barrel also includes a third mounting portion, the outer side wall of the third lens abuts against the third mounting portion, the third mounting portion has a third thickness in a direction perpendicular to the optical axis, and the third thickness is greater than the second thickness.
[0015] Further preferably, the lens group also includes a fourth lens, a fifth lens, a sixth lens and a seventh lens, the seventh lens is located above the third lens, the lens barrel also includes a fourth mounting portion, the outer side wall of the seventh lens abuts against the fourth mounting portion, the fourth mounting portion has a fourth thickness in a direction perpendicular to the optical axis, and the fourth thickness is greater than the first thickness and less than the second thickness.
[0016] Further preferably, the object side surface and the image side surface of the fifth lens are both convex surfaces at the near optical axis, and the fifth lens is arranged at a position corresponding to the flange portion.
[0017] The utility model also provides a vehicle, comprising the above-mentioned lens.
[0018] Compared with the prior art, the beneficial effects of the present invention are:
[0019] The utility model can effectively reduce the radial force of the lens, reduce the deformation of the optical effective part of the lens, reduce temperature drift, improve the stability of the lens, and enhance product performance by setting the wall thickness of the lens barrel. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] 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:
[0021] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;
[0022] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;
[0023] Illustrations: 1-first lens, 2-second lens, 3-spacer, 4-flange, 5-lens barrel, 501-first mounting portion, 502-second mounting portion, 503-third mounting portion, 504-fourth mounting portion, 6-third lens, 7-fourth lens, 8-fifth lens, 9-sixth lens, 10-seventh lens, AB-optical axis, H1-first thickness, H2-second thickness, H3-third thickness, H4-fourth thickness.
[0024] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0025] 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.
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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.
[0030] like Figure 1 and Figure 2 As shown, a lens comprises a lens barrel 5 and a lens group, wherein the lens group is arranged in the lens barrel 5.
[0031] The lens group includes a first lens 1 and a second lens 2. The object side surface and / or image side surface of the first lens 1 are concave at the near optical axis AB, and the object side surface and image side surface of the second lens 2 are convex at the near optical axis AB. It can be understood that A in the optical axis AB is the object side end of the lens, and B is the image side end of the lens. The lens barrel 5 includes a first mounting portion 501 and a second mounting portion 502. The outer wall of the first lens 1 abuts against the first mounting portion 501, and the outer wall of the second lens 2 abuts against the second mounting portion 502; the first mounting portion 501 has a first thickness H1 in the direction perpendicular to the optical axis AB, and the second mounting portion 502 has a second thickness H2 in the direction perpendicular to the optical axis AB, and the first thickness H1 is less than the second thickness H2, that is, H1<H2. It can be understood that the wall thickness of the lens barrel 5 at the position corresponding to the lens with a concave surface is less than the wall thickness of the lens barrel 5 at the position corresponding to the double convex lens. Reducing the wall thickness can reduce the radial force, which will reduce the change in the lens surface shape at high and low temperatures, thereby improving the stability of the product and improving its temperature drift.
[0032] More specifically, the first thickness H1 is 0.3 mm to 1.3 mm, preferably 0.5 mm, and the second thickness H2 is 1.4 mm to 3 mm, preferably 1.5 mm.
[0033] More specifically, the lens further includes a flange portion 4 and a spacer ring 3 . The spacer ring 3 is arranged in the lens barrel 5 and sandwiched between the lenses of the lens group. The flange portion 4 is arranged at the outer middle position of the lens barrel 5 .
[0034] More specifically, the lens group also includes a third lens 6, the object side surface and the image side surface of the third lens 6 are both convex surfaces at the near optical axis AB, the third lens 6 is arranged close to the object side end of the lens barrel 5, the lens barrel 5 also includes a third mounting portion 503, the outer side wall of the third lens 6 abuts against the third mounting portion 503, and the third mounting portion 503 has a third thickness H3 in a direction perpendicular to the optical axis AB, and the third thickness H3 is greater than the second thickness H2, that is, H3>H2.
[0035] More specifically, the lens group further includes a fourth lens 7, a fifth lens 8, a sixth lens 9 and a seventh lens 10, the seventh lens 10 is located above the third lens 6, the lens barrel 5 further includes a fourth mounting portion 504, the outer side wall of the seventh lens 10 abuts against the fourth mounting portion 504, the fourth mounting portion 504 has a fourth thickness H4 in the direction perpendicular to the optical axis AB, the fourth thickness H4 is greater than the first thickness H1 and less than the second thickness H2, that is, H1<H4<H2. The object side surface and the image side surface of the fifth lens 8 are both convex surfaces at the near optical axis AB, and the fifth lens 8 is arranged corresponding to the position of the flange portion 4.
[0036] The utility model also provides a vehicle, comprising the above-mentioned 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 lens, comprising a lens barrel (5) and a lens group, wherein the lens group is arranged in the lens barrel (5), characterized in that: The lens group comprises a first lens (1) and a second lens (2), wherein the object side surface and / or the image side surface of the first lens (1) is a concave surface at the near optical axis, and the object side surface and the image side surface of the second lens (2) are both convex surfaces at the near optical axis; The lens barrel (5) comprises a first mounting portion (501) and a second mounting portion (502); the outer wall of the first lens (1) abuts against the first mounting portion (501), and the outer wall of the second lens (2) abuts against the second mounting portion (502); the first mounting portion (501) has a first thickness in a direction perpendicular to the optical axis, and the second mounting portion (502) has a second thickness in a direction perpendicular to the optical axis, and the first thickness is less than the second thickness.
2. A lens according to claim 1, characterized in that: The first thickness is 0.3 mm to 1.3 mm.
3. A lens according to claim 2, characterized in that: The first thickness is 0.5 mm.
4. A lens according to claim 1, characterized in that: The second thickness is 1.4 mm to 3 mm.
5. A lens according to claim 4, characterized in that: The second thickness is 1.5 mm.
6. The lens according to claim 1, characterized in that: The lens further comprises a flange portion (4) and a spacer ring (3), wherein the spacer ring (3) is arranged in the lens barrel (5) and clamped between the lenses of the lens group, and the flange portion (4) is arranged at the middle position outside the lens barrel (5).
7. A lens according to claim 6, characterized in that: The lens group further comprises a third lens (6), the object side surface and the image side surface of the third lens (6) are both convex surfaces at the near optical axis, the third lens (6) is arranged close to the object side end of the lens barrel (5), the lens barrel (5) further comprises a third mounting portion (503), the outer side wall of the third lens (6) abuts against the third mounting portion (503), the third mounting portion (503) has a third thickness in a direction perpendicular to the optical axis, and the third thickness is greater than the second thickness.
8. A lens according to claim 7, characterized in that: The lens group further comprises a fourth lens (7), a fifth lens (8), a sixth lens (9) and a seventh lens (10), wherein the seventh lens (10) is located above the third lens (6), and the lens barrel (5) further comprises a fourth mounting portion (504), wherein an outer wall of the seventh lens (10) abuts against the fourth mounting portion (504), and the fourth mounting portion (504) has a fourth thickness in a direction perpendicular to the optical axis, wherein the fourth thickness is greater than the first thickness and less than the second thickness.
9. A lens according to claim 8, characterized in that: The object side surface and the image side surface of the fifth lens (8) are both convex surfaces at the near optical axis, and the fifth lens (8) is arranged at a position corresponding to the flange portion (4).
10. A vehicle, characterized in that: Comprising the lens as described in any one of claims 1-9.