Lens structure with embedded heating sheet
By inserting a heating ring between the lenses and setting an annular groove in the non-optical zone of the lens, the problems of lens frosting and fogging are solved, rapid thermal conductivity and imaging stability are achieved, and the adverse effects of the heating ring on the lens are avoided, thus improving the improvement of the improvement of the heating ring. Imaging clarity.
Patent Information
- Application Number
- CN202421123188.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-03-29
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The existing lens structure is prone to lens frosting and fogging problems in extreme climates, which will affect the imaging clarity, and the setting of the heating ring may lead to abnormal resistance, increased spacing and optical path blockage.
Design a lens structure with an inline heating sheet, by inserting a heating ring between the lenses and setting an annular groove in the first non-optical zone to thin the lens thickness, keeping the lens spacing unchanged, and reducing the heating ring to the lens and provide radial positioning to avoid heat ring offset.
It achieves rapid thermal conductivity, maintains imaging stability, reduces the impact of the heating ring on the lens, and avoids radial deviation of the heating ring, improving imaging clarity.
Smart Images
Figure CN222319200U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a lens structure which achieves defrosting and defogging effects by arranging a heating device between lenses. Background Art
[0002] Lens structures are widely used in various fields of life and also have many industrial applications. In extreme climate environments, the lens may have problems such as frost on the outer mirror surface and / or fog on the inner mirror surface, which will significantly affect the image clarity.
[0003] like Figure 1 As shown, in order to solve the problem of lens frost and fog, the prior art is to sandwich a heating ring 30 between the first and second lenses 10, 20 of the lens structure. The heating ring 30 is used to heat the lens group to achieve the effect of defrosting and defogging. However, there are several problems in the prior art: (1) The heating ring 30 is sandwiched between the first and second lenses 10, 20. When the locking ring 42 is locked too tightly, the heating ring 30 will be subjected to axial pressure, resulting in abnormal resistance value and failure to achieve the expected heating effect; (2) The setting of the heating ring 30 will increase the distance between the first and second lenses 10, 20, resulting in unstable resolution and affecting the image clarity; (3) The heating ring 30 may be radially offset and not coaxial with the first and second lenses 10, 20, thereby blocking the light path and affecting the image clarity. Utility Model Content
[0004] The technical problem to be solved by the present application is to provide a lens structure that can solve the problems of the prior art.
[0005] In order to achieve the above and other purposes, the present application provides a lens structure with an embedded heating plate, which includes a lens barrel, a first lens, a second lens and a heating ring. The lens barrel has a lens barrel body, a locking ring and an optical hollow area. The locking ring is screwed on the lens barrel body. The first lens is arranged in the optical hollow area and has a first optical area and a first non-optical area surrounding the first optical area. An image side of the first non-optical area has an annular groove. The second lens is arranged in the optical hollow area and has a second optical area and a second non-optical area surrounding the second optical area. The second optical area is opposite to the first optical area. The heating ring is embedded in the annular groove.
[0006] By embedding the heating ring in the annular groove of the first non-optical zone, the present application can achieve the following technical effects: (1) the thickness of the first lens is reduced due to the annular groove, which can increase the heat conduction rate; (2) the interval between the first and second lenses remains unchanged, which can maintain imaging stability; (3) the close contact between the heating ring and the second lens is reduced, thereby reducing the impact of the heating ring on the second lens when it is working; (4) the annular groove provides radial positioning for the heating ring to avoid radial displacement of the heating ring.
[0007] The details of other effects and embodiments of the present application are described below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0009] Figure 1 It is a cross-sectional schematic diagram of the prior art;
[0010] Figure 2 is another cross-sectional schematic diagram of the prior art;
[0011] Figure 3 is a three-dimensional diagram of the first embodiment of the present application;
[0012] Figure 4 is an exploded view of the first embodiment of the present application;
[0013] Figure 5 is a cross-sectional schematic diagram of the first embodiment of the present application;
[0014] Figure 6 It is a cross-sectional schematic diagram of the second embodiment of the present application.
[0015] Explanation of symbols
[0016] 10: First lens 11: First optical zone
[0017] 12: First non-optical zone 121: Annular groove
[0018] 1211: Outer wall 1212: Inner wall
[0019] 122: radial groove 20: second lens
[0020] 21: Second optical zone 22: Second non-optical zone
[0021] 30: Heating ring 31: Outer edge
[0022] 32: Inner edge 33: Electrical connection strip
[0023] 331: Gold Finger 40: Lens Barrel
[0024] 41: Lens barrel body 411: Flat cable opening
[0025] 42: Locking ring 43: Optical hollow area DETAILED DESCRIPTION
[0026] The positional relationships described in the following embodiments include: up, down, left and right. Unless otherwise specified, they are all based on the directions in which the components are drawn in the drawings.
[0027] Please refer to Figures 3 to 5 , which is a first embodiment of the present application, and the lens structure with a built-in heating plate includes a lens barrel 40, a first lens 10, a second lens 20 and a heating ring 30. It should be noted that the lens structure of the present application may further include other additional lenses and optical components in addition to the above components. For the purpose of simplicity, these components are omitted in the drawings and are not shown.
[0028] The lens barrel 40 has a lens barrel body 41, a locking ring 42 and an optical hollow area 43. The lens barrel body 41 has a flat cable opening 411. The locking ring 42 is screwed on the lens barrel body 41. The optical hollow area 43 can be used to install optical components of the lens structure, including but not limited to the first and second lenses 10 and 20.
[0029] The first and second lenses 10 are both arranged in the optical hollow area 43. The first lens 10 is the lens closest to the locking ring 42. The first lens 10 has a first optical zone 11 and a first non-optical zone 12 surrounding the first optical zone 11. An image side of the first non-optical zone 12 has an annular groove 121 and a radial groove 122. The radial groove 122 connects the outer side of the annular groove 121. The locking ring 42 abuts against the first non-optical zone 12. The second lens 20 has a second optical zone 21 and a second non-optical zone 22 surrounding the second optical zone 21. The second optical zone 21 is opposite to the first optical zone 11. The first and second optical zones 11 and 21 are coaxial. The first non-optical zone 12 can abut against the second non-optical zone 22. It should be noted that the object side of the optical lens refers to the side facing the object, that is, the side facing the locking ring, and the image side of the optical lens refers to the side facing the imaging surface, that is, the side opposite to the locking ring. In addition, the optical zone of an optical lens refers to the part through which light used for imaging passes, while the non-optical zone refers to the part through which light used for imaging does not pass. The non-optical zone is usually used for positioning of optical lenses.
[0030] The heating ring 30 is embedded in the annular groove 121, and the heating ring 30 does not cover the first and second optical zones. In this embodiment, the annular groove 121 has only one side wall, namely the outer side wall 1211, and the heating ring 30 has an outer side edge 31, and the outer side edge 31 abuts against the outer side wall 1211, thereby achieving the effect of positioning the heating ring 30. The depth of the annular groove 121 is not less than the thickness of the heating ring 30. Preferably, the depth of the annular groove 121 is exactly equal to the thickness of the heating ring 30, so that the heating ring 30 can be closely attached to the first lens 10, but will not be subjected to the clamping force from the first and second lenses 10, 20. For the purpose of electrical connection, the heating ring 30 may have an electrical connection strip 33, and the electrical connection strip 33 may extend to the outside of the optical hollow area 43 through the radial groove 122 and the flat cable opening 411. The free end of the electrical connection strip 33 may have two gold fingers 331 and may be electrically connected to a controller (not shown) or a power source (not shown). In a possible implementation, the heating ring is a flexible printed circuit.
[0031] Please refer to Figure 6 , illustrated is the second embodiment of the present application, which is substantially the same as the first embodiment, with the main difference being that the annular groove 121 has the outer wall 1211 and an inner wall 1212, and the heating ring 30 has an outer edge 31 and an inner edge 32, so that the outer wall 1211 and the inner wall 1212 can be respectively used for the outer edge 31 and the inner edge 32 to abut against, thereby better fixing the heating ring.
[0032] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present application, and are not intended to limit the implementation methods of the technology of the present application in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present application, but they should still be regarded as technologies or embodiments that are essentially the same as the present application.
Claims
1. A lens structure with a built-in heating plate, characterized in that: The lens structure with a built-in heating plate comprises: A lens barrel, comprising a lens barrel body, a locking ring and an optical hollow area, wherein the locking ring is screwed on the lens barrel body; A first lens, disposed in the optical hollow area and having a first optical area and a first non-optical area surrounding the first optical area, wherein an image side of the first non-optical area has an annular groove; a second lens, disposed in the optical hollow area and having a second optical zone and a second non-optical zone surrounding the second optical zone, the second optical zone being opposite to the first optical zone; and A heating ring is embedded in the annular groove.
2. The lens structure with a built-in heating plate according to claim 1, characterized in that: The annular groove has an outer side wall, and the heating ring has an outer side edge, and the outer side edge abuts against the outer side wall.
3. The lens structure with a built-in heating plate according to claim 1, characterized in that: The annular groove has an inner wall, and the heating ring has an inner edge, and the inner edge abuts against the inner wall.
4. The lens structure with an embedded heating plate according to claim 1, wherein the depth of the annular groove is not less than the thickness of the heating ring.
5. The lens structure with a built-in heating plate according to claim 1, characterized in that: The locking ring abuts against the first non-optical area.
6. The lens structure with a built-in heating plate according to claim 1, characterized in that: The first non-optical area abuts against the second non-optical area.
7. The lens structure with a built-in heating plate according to claim 1, characterized in that: The lens barrel body has a flat cable opening, the image side of the first non-optical area has a radial groove, the heating ring has an electrical connection strip, the radial groove is connected to the annular groove, and the electrical connection strip extends to the outside of the optical hollow area through the radial groove and the flat cable opening.
8. The lens structure with a built-in heating plate according to claim 7, characterized in that: The electrical connection strip has two gold fingers.