Drop-resistant and wear-resistant lens module

Abstract

The utility model provides an anti-drop wear-resistant lens module, which comprises a lens cone, an optical lens group and a sleeve, the optical lens group is fixed in the lens cone, the sleeve is sleeved and fixed outside the lens cone, the sleeve is made of a metal material, the sleeve is fixed outside the lens cone through an adhesive, and the optical lens group is fixed outside the lens cone through the adhesive. And a gap is formed between the sleeve and the lens barrel. The anti-drop and wear-resistant lens module can effectively solve the problems that the lens is not resistant to drop, easy to wear and not resistant to chemical corrosion and the like.

Description

Technical Field

[0001] This application belongs to the field of optical lens and assembly technology, and in particular relates to a shock-resistant and wear-resistant lens module. Background Technology

[0002] Hybrid glass-plastic lenses are increasingly used in smart devices, including wearable smart devices and drones, due to their unique optical stability. Their lens modules typically use lightweight, easily moldable PC material for the lens barrel, and many lenses have exposed front ends due to the minimalist design requirements of smart devices. However, PC lens barrels are prone to deformation under external forces, leading to lens damage and affecting usability. Furthermore, they are susceptible to wear and tear and are not resistant to chemical corrosion, affecting their appearance.

[0003] Existing patent CN209525509U discloses a lens barrel integrally injection molded with an embedded metal sleeve. The lens barrel and the metal sleeve are integrally formed during the injection molding process, which enhances the robustness of the lens module. Although the integral molding of the lens barrel and the metal sleeve during the injection molding process can improve the lens barrel's resistance to deformation, there is a lack of buffer between the metal sleeve and the lens barrel, which cannot effectively solve the damage to the lens barrel and lens caused by external forces, especially the damage to the glass lens.

[0004] Existing patent CN208907936U discloses a lens barrel and lens module. The lens barrel includes a first barrel wall with a light-transmitting hole and a second barrel wall that bends and extends from the first barrel wall. The lens barrel also includes a sleeve embedded in the lens barrel. In this way, the sleeve embedded in the lens barrel can greatly improve the lens barrel's resistance to deformation, thereby improving assembly stability. However, similarly, there is a lack of buffer between the metal sleeve and the lens barrel, which cannot effectively prevent damage to the lens barrel and lens from external forces.

[0005] It is evident that existing glass-plastic hybrid lenses generally suffer from problems such as being susceptible to impact, wear, and chemical corrosion. Currently, there is a lack of lens modules that are impact-resistant, wear-resistant, and can effectively solve these problems. Utility Model Content

[0006] To address the shortcomings of the existing technology, this utility model provides a shock-resistant and wear-resistant lens module, which can effectively solve the problems of lenses being not shock-resistant, easily worn, and not resistant to chemical corrosion.

[0007] To achieve the above objectives, this utility model provides a drop-resistant and wear-resistant lens module, including a lens barrel, an optical lens group, and a sleeve. The optical lens group is fixed inside the lens barrel, and the sleeve is fitted and fixed outside the lens barrel. The sleeve is made of metal and is fixed outside the lens barrel by an adhesive, with a gap formed between the sleeve and the lens barrel.

[0008] According to one embodiment of this application, the sleeve is machined or stamped from stainless steel.

[0009] According to one embodiment of this application, the sleeve or the lens barrel is formed with a plurality of glue overflow grooves.

[0010] According to one embodiment of this application, the inner wall of the lens barrel forms a plurality of stepped structures; each stepped structure includes a straight edge of an inner step and a sloping edge of an inner step; the straight edge of the inner step is parallel to the optical axis of the optical lens group; the sloping edge of the inner step forms a 60° angle with the optical axis of the optical lens group.

[0011] According to one embodiment of this application, a through hole is formed in the middle of the top surface of the sleeve, and a chamfer is formed at the top of the through hole; the chamfer and the inner surface of the through hole are outside the edge line L of the outer field of view M of the optical lens group.

[0012] According to one embodiment of this application, the optical lens group includes a plurality of lenses, a plurality of spacers and a plurality of spacers; the spacers are disposed between the lenses; the spacers are disposed between the lenses or between the spacers and the lenses, and the spacers are made of black light-shielding sheets.

[0013] According to one embodiment of this application, the optical lens assembly is fixed inside the lens barrel by a pressure ring or UVH adhesive.

[0014] According to one embodiment of this application, the width of the gap ranges from 0.02 mm to 1 mm.

[0015] According to one embodiment of this application, a support step is formed on the outer side of the lens barrel, the sleeve is sleeved on the lens barrel above the support step, and the bottom edge of the sleeve is supported on or by the adhesive on the support step.

[0016] According to one embodiment of this application, a plurality of positioning protrusions are formed on the outer side of the lens barrel adjacent to the upper part of the supporting step; the thickness of the positioning protrusions is less than the width of the gap.

[0017] According to one embodiment of this application, the angle of the outer wall of the mirror tube on the upper side of the supporting step is: 95° < γ < 160°.

[0018] Because of the adoption of the above technical solution, this utility model has the following beneficial effects:

[0019] The sleeve is made of rigid metal, which effectively improves the lens's resistance to deformation, wear, and chemical corrosion. Furthermore, the adhesive covering a certain area is filled between the sleeve and the lens barrel, using the adhesive and the gap as a buffer to further enhance the lens's impact resistance. The sleeve is machined or stamped from stainless steel, and the use of high-rigidity stainless steel enhances the lens's resistance to deformation, wear, and chemical corrosion. An adhesive overflow groove is used to prevent adhesive overflow and to check the adhesive. The chamfer and the inner surface of the through-hole are outside the edge L of the outer field of view M of the optical lens group to avoid the risk of the sleeve obstructing the light path. The positioning protrusion facilitates the assembly of the sleeve and improves the coaxiality of the sleeve and the lens barrel. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the impact-resistant and wear-resistant lens module according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a partial structural schematic diagram of the impact-resistant and wear-resistant lens module according to Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the sleeve structure of the impact-resistant and wear-resistant lens module according to Embodiment 1 of this utility model;

[0024] Figure 4 This is another structural schematic diagram of the impact-resistant and wear-resistant lens module according to Embodiment 1 of this utility model;

[0025] Figure 5 This is a schematic diagram of the impact-resistant and wear-resistant lens module according to Embodiment 2 of this utility model;

[0026] Figure 6 This is a partial structural diagram of the lens barrel of the impact-resistant and wear-resistant lens module according to Embodiment 2 of this utility model;

[0027] Figure 7 This is a partial structural schematic diagram of the impact-resistant and wear-resistant lens module according to Embodiment 2 of this utility model;

[0028] Figure 8 This is a schematic diagram of the sleeve structure of the impact-resistant and wear-resistant lens module according to Embodiment 2 of this utility model;

[0029] Figure 9This is a schematic diagram of the impact-resistant and wear-resistant lens module according to Embodiment 3 of this utility model;

[0030] Figure 10 This is a schematic diagram of the anti-drop and wear-resistant lens module of Embodiment 4 of this utility model.

[0031] Explanation of icon numbers:

[0032] 1-Lens;

[0033] 2-Sleeve;

[0034] 211-Chamfer;

[0035] 212-Inner hole surface;

[0036] 213 - Sleeve bottom edge;

[0037] 3-Eye tube;

[0038] 301 - Straight edge of the inner step of the lens barrel;

[0039] 302 - Inclined edge of the inner step of the lens barrel;

[0040] 303 - Supporting step;

[0041] 304 positioning rib;

[0042] 305 - Glue overflow tank;

[0043] 4-UVH adhesive;

[0044] 401 - Pressure Ring;

[0045] 5-Adhesive;

[0046] 6-Lens;

[0047] 7-September;

[0048] 8-Gap rings. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0050] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the feature.

[0051] It should also be understood that the terms "comprising," "including," "having," "containing," 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. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0052] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized manner unless expressly so specified herein.

[0053] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The features, principles, and other aspects of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0054] Example 1

[0055] Please see Figures 1-4 According to Embodiment 1 of this application, a shock-resistant and wear-resistant lens module includes a lens barrel 3, an optical lens group, and a sleeve 2. The optical lens group is fixed inside the lens barrel 3, and the sleeve 2 is sleeved and fixed outside the lens barrel 3. The sleeve 2 is made of metal and is fixed outside the lens barrel 3 by an adhesive 5, and a gap is formed between the sleeve 2 and the lens barrel 3.

[0056] The sleeve 2 is made of rigid metal material, which can effectively improve the lens 1's resistance to deformation, wear, and chemical corrosion. In addition, the adhesive 5 with a certain coverage area is filled between the sleeve 2 and the lens barrel 3. The adhesive 5 and the gap design serve as a buffer to further improve the lens 1's impact resistance.

[0057] According to one embodiment of this application, the sleeve 2 is machined or stamped from stainless steel. Using high-rigidity stainless steel enhances the lens 1's resistance to deformation, wear, and chemical corrosion. Furthermore, the sleeve 2 can be electroplated or sandblasted to achieve different colors and gloss levels depending on equipment requirements.

[0058] According to one embodiment of this application, such as Figure 3As shown, the sleeve 2 has a plurality of overflow grooves. In this embodiment, the sleeve 2 has an overflow groove with a width of d and a thickness of c to prevent overflow and to observe whether there is adhesive 5. The number of overflow grooves is one, or two, three or more are symmetrically distributed at the bottom of the sleeve 2.

[0059] According to one embodiment of this application, a support step 303 is formed on the outer side of the lens barrel 3. The sleeve 2 is sleeved on the upper part of the lens barrel 3 above the support step 303, and the bottom edge of the sleeve 2 is supported on or by the adhesive 5 on the support step 303. The support step 303 defines the assembly position of the sleeve 2. In addition, the support step 303 of the lens barrel 3 and the bottom edge 213 of the sleeve at the bottom of the sleeve 2 form an overflow buffer zone and an observation area.

[0060] According to one embodiment of this application, the inner wall of the lens barrel 3 forms a plurality of stepped structures; each stepped structure includes a straight edge 301 and a inclined edge 302 of the inner step; the straight edge 301 of the inner step is parallel to the optical axis of the optical lens group; the inclined edge 302 of the inner step forms a 60° angle α with the optical axis of the optical lens group. The optical lens group includes a plurality of lenses 6, a plurality of spacers 7, and a plurality of spacers 8; the spacers 8 are spaced between the lenses 6; the spacers 7 are spaced between the lenses 6 or between the spacers 8 and the lenses 6, the lenses include resin lenses and glass lenses, and the spacers 7 are made of black light-blocking sheets. The optical lens group is fixed to the inside of the lens barrel 3 by a pressure ring 401 or UVH adhesive 4, such as Figure 1 and Figure 4 As shown.

[0061] According to one embodiment of this application, such as Figure 2 As shown, a through hole is formed in the middle of the top surface of the sleeve 2, and a chamfer 211 is formed at the top of the through hole; the chamfer 211 and the inner surface 212 of the through hole are outside the edge line L of the outer field of view M (the outer field of view angle is M=2θ) of the optical lens group, so as not to affect the outer field of view M of the lens 1, so as to avoid the risk of the sleeve 2 blocking the light path.

[0062] According to one embodiment of this application, the width range of the gaps h and b between the sleeve 2 and the lens barrel 3 is 0.02mm to 1mm, and the size of the gap b on the inclined surface is approximately the thickness of the adhesive 5, wherein the adhesive 5 is a low-modulus, low-temperature thermosetting adhesive with a curing temperature of less than 95°C.

[0063] The assembly sequence of the lens 1 can be either to first install the lens 6, then apply the adhesive 5, then install the sleeve 2, and then cure it, or to first apply the adhesive 5, install the sleeve 2, cure it, and then install the lens 6.

[0064] Example 2

[0065] Please see Figures 5-8 The impact-resistant and wear-resistant lens module of Embodiment 2 of this application has a structure that is basically the same as that of Embodiment 1, except that: an overflow groove 305 with a height of c1 is provided on the outer side of the lens barrel 3 at the step 303 to prevent glue overflow and to observe whether there is adhesive 5. The number of overflow grooves 305 is one, or two, three or more, symmetrically distributed on the side wall of the lens barrel 3. The overflow groove 305 of the lens barrel 3 and the bottom edge 213 of the sleeve form an overflow buffer zone and an observation area.

[0066] According to one embodiment of this application, a plurality of positioning protrusions 304 are formed on the outer side of the lens barrel 3 near the upper part of the supporting step 303; the thickness of the positioning protrusions 304 is less than the width of the gap. In this embodiment, the outer side of the lens barrel 3 is provided with n strip-shaped positioning protrusions 304 of thickness a near the support, wherein the thickness a is less than the gaps h and b between the sleeve 2 and the lens barrel 3, in order to facilitate the assembly of the sleeve 2 and improve the coaxiality of the sleeve 2 and the lens barrel 3, wherein n = 1, 2, 3 or more are symmetrically distributed on the side wall of the lens barrel 3.

[0067] According to one embodiment of this application, the angle of the outer wall of the mirror tube 3 on the upper side of the supporting step 303 is: 95° < γ < 160°.

[0068] According to one embodiment of this application, the adhesive can be adjusted by changing the dispensing position, amount, number of loops, and dispensing in segments to control the coverage area of ​​the adhesive 5 and achieve the ideal state of minimizing the stress on the lens 6.

[0069] Example 3

[0070] Please see Figure 9 The impact-resistant and wear-resistant lens module of Embodiment 3 of this application has a structure that is basically the same as that of Embodiment 1 or Embodiment 2, except that:

[0071] The sleeve 2 is designed with the required length and shape according to the characteristics of the lens barrel 3 and the exposed part of the lens 1, in order to better protect the lens 6 and the exposed part of the lens barrel 3. The bottom of the sleeve 2 does not contact the lens barrel 3, that is, there is no supporting step 303 on the outside of the lens barrel 3, so as to facilitate strength testing.

[0072] Example 4

[0073] Please see Figure 10 The impact-resistant and wear-resistant lens module of Embodiment 4 of this application has a structure that is basically the same as that of Embodiment 1, Embodiment 2 or Embodiment 3, except that:

[0074] The sleeve 2 is designed with the required length and shape according to the characteristics of the lens barrel 3 and the exposed part of the lens 1, in order to better protect the lens 6 and the exposed part of the lens barrel 3. The bottom of the sleeve 2 is connected to the outer support step 303 of the lens barrel 3 by the adhesive 4, so as to transfer the external force encountered to the bottom of the lens 1 and better protect the lens assembly.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, improvements, or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A shock-resistant and wear-resistant lens module, comprising a lens barrel, an optical lens group, and a sleeve, wherein the optical lens group is fixed inside the lens barrel, and the sleeve is fitted and fixed outside the lens barrel, characterized in that, The sleeve is made of metal and is fixed to the outside of the lens barrel by adhesive, with a gap between the sleeve and the lens barrel.

2. The shock-resistant and wear-resistant lens module according to claim 1, characterized in that, The sleeve is made of stainless steel by turning or stamping.

3. The shock-resistant and wear-resistant lens module according to claim 1, characterized in that, The sleeve or the lens barrel has several glue overflow grooves.

4. The shock-resistant and wear-resistant lens module according to claim 1, characterized in that, The inner wall of the lens barrel forms multiple stepped structures; each stepped structure includes a straight edge of the inner step and a sloping edge of the inner step; the straight edge of the inner step is parallel to the optical axis of the optical lens group; the sloping edge of the inner step forms a 60° angle with the optical axis of the optical lens group.

5. The shock-resistant and wear-resistant lens module according to claim 1, characterized in that, A through hole is formed in the middle of the top surface of the sleeve, and a chamfer is formed at the top of the through hole; the chamfer and the inner surface of the through hole are outside the edge line L of the outer field of view M of the optical lens group.

6. The shock-resistant and wear-resistant lens module according to claim 1, characterized in that, The optical lens assembly includes multiple lenses, several spacers, and several spacers; the spacers are disposed between the lenses; the spacers are disposed between the lenses or between the spacers and the lenses, and the spacers are made of black light-blocking thin sheets.

7. The shock-resistant and wear-resistant lens module according to claim 1, characterized in that, The optical lens assembly is fixed inside the lens barrel by a pressure ring or UVH adhesive.

8. The shock-resistant and wear-resistant lens module according to claim 1, characterized in that, The width of the gap ranges from 0.02 mm to 1 mm.

9. The shock-resistant and wear-resistant lens module according to claim 1, characterized in that, A support step is formed on the outer side of the lens barrel, and the sleeve is fitted onto the lens barrel above the support step, with the bottom edge of the sleeve supported on or by the adhesive on the support step.

10. The shock-resistant and wear-resistant lens module according to claim 9, characterized in that, The outer side of the lens barrel has several positioning protrusions formed on the upper part adjacent to the supporting step; the thickness of the positioning protrusions is less than the width of the gap.

11. The shock-resistant and wear-resistant lens module according to claim 9, characterized in that, The angle of the outer wall of the mirror tube on the upper side of the supporting step is 95° < γ < 160°.

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