Stripe lens assembly detection tool and assembly equipment thereof
By using lighting modules, pattern diaphragms and imaging modules in the striped lens assembly detection tooling, a patterned spot matching the correct assembly of the striped lens is solved, and the yield and spot quality are improved.
Patent Information
- Application Number
- CN202421392107.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-17
AI Technical Summary
In the prior art, the assembly direction and angle of the striped lens are inaccurate, resulting in problems such as low yield, poor spot quality and angular deviation.
A striped lens assembly detection tool is provided, including an illumination module, a pattern diaphragm, an imaging module and an analog working surface. Through the cooperation of a light source, a condenser and a pattern diaphragm, a pattern light spot matching the correct assembly direction and angle of the striped lens are formed, and are used to correct the assembly direction and angle of the striped lens.
By detecting the use of tooling, the assembly direction and angle of the striped lens can be effectively corrected, yield rate can be improved, and the quality and consistency of the spot can be improved.
Smart Images
Figure CN222671379U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of optical lens detection, and in particular relates to a striped lens assembly detection tool and assembly equipment thereof. Background Art
[0002] The stripe lens is a type of Fresnel lens. It diverges light in a certain direction by arranging cylinders at equal intervals, making the projected light spot appear elliptical.
[0003] In the prior art, the integrated lens is to directly make the light-emitting surface of the TIR lens into a stripe pattern, but the light spot projected by the integrated lens has many stray light and non-elliptical shapes. One solution is to separate the stripe lens (such as Figure 5 As shown in FIG. 1 , a separate stripe lens and a TIR lens are formed into a combination. The elliptical boundary of the light spot projected by the separate lens combination is clear and the stray light is small.
[0004] Since the split lens combination adds the process of assembling the stripe lens and the TIR lens, if the stripe lens assembly direction and angle are inaccurate during the production and assembly of the split lens combination, it will lead to problems such as low yield, poor quality of the formed light spot, and angle deviation. Utility Model Content
[0005] The embodiment of the utility model provides a stripe lens assembly detection tool, which aims to solve the problem of inaccurate stripe lens assembly direction and angle in the prior art.
[0006] An embodiment of the utility model also provides a stripe lens assembly detection tool, comprising: an illumination module, a pattern aperture, an imaging module and a simulated working surface arranged in sequence along the light path direction; the illumination module comprises a light source and a focusing lens, and the focusing lens is arranged on one side of the light source along the irradiation direction of the light path; the pattern aperture forms a pattern spot on the simulated working surface through the imaging module, which matches the lens stripes when the stripe lens is correctly assembled.
[0007] In some embodiments, the focusing lens is a plano-convex lens, and the side of the convex lens close to the light source is a plane.
[0008] In some embodiments, the light source is an LED light source.
[0009] In some embodiments, the light source emits light with a wavelength of 625-760 nm.
[0010] In some embodiments, the light source emits light with a wavelength of 630 nm.
[0011] In some embodiments, the imaging module includes a first lens, a second lens, and a third lens sequentially arranged along the light path direction, the first lens is a concave-convex lens, and the second lens and the third lens are convex lenses.
[0012] In some embodiments, the imaging module includes a square aperture stop, a fourth lens, and a fifth lens sequentially arranged along the light path direction, the fourth lens is a concave-convex lens, and the fifth lens is a convex lens.
[0013] In some embodiments, the aperture light-transmitting pattern of the patterned aperture is in the shape of stripes.
[0014] In some embodiments, the distance from the last light-emitting surface of the imaging module to the simulated working surface is the working distance, and the working distance is proportional to the radius of the stripe lens to be detected.
[0015] The embodiment of the utility model further provides a striped lens assembly device, comprising a striped lens assembly detection tool in the above-mentioned embodiment.
[0016] The beneficial effects achieved by the utility model are as follows: the light emitted by the light source is irradiated onto the pattern aperture through the converging function of the condensing lens, the pattern aperture blocks part of the light, and the remaining light that is not blocked is adjusted by the imaging module and projected onto the simulated working surface to form a pattern light spot corresponding to the pattern aperture, and the user puts the striped lens to be inspected into the pattern light spot of the simulated working surface, because the pattern light spot of the pattern aperture on the simulated working surface through the imaging module matches the lens stripes when the striped lens is correctly assembled, the pattern light spot can be compared with the stripes of the striped lens, and then the striped lens is corrected to ensure that the stripe direction of the striped lens meets the requirements for correct assembly, and then the TIR lens is installed together with the striped lens, so as to improve the efficiency of assembling the striped lens and the TIR lens and improve the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the optical path structure of a stripe lens assembly and detection tooling provided by an embodiment of the utility model;
[0018] Figure 2 It is a schematic diagram of a stripe diaphragm of a stripe lens assembly and detection tooling provided by an embodiment of the utility model;
[0019] Figure 3 It is a schematic diagram of another stripe aperture of a stripe lens assembly and detection tool provided by an embodiment of the utility model;
[0020] Figure 4 This is a simulated working surface imaging diagram of a stripe lens assembly and detection tooling provided by an embodiment of the utility model;
[0021] Figure 5 Schematic diagram of stripe TIR lens separation.
[0022] Reference numerals
[0023] 100, lighting module; 110, light source; 120, focusing lens; 200, pattern aperture; 300, imaging module; 310, first lens; 320, second lens; 330, third lens; 400, simulated working surface. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In addition, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.
[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention provides various specific examples of processes and materials, but those skilled in the art can recognize the application of other processes and / or the use scenarios of other materials.
[0028] Embodiment 1
[0029] Combination Figure 1 , Figure 2 and Figure 4 As shown, a striped lens assembly and detection tool provided in this embodiment includes:
[0030] An illumination module 100, a pattern aperture 200, an imaging module 300 and a simulated working surface 400 are sequentially arranged along the light path direction; the illumination module 100 comprises a light source 110 and a focusing lens 120, and the focusing lens 120 is arranged on one side of the light source 110 along the irradiation direction of the light path; the pattern spot of the pattern aperture 200 on the simulated working surface 400 through the imaging module 300 matches the lens stripes when the stripe lens is correctly assembled.
[0031] The light source 110 in this embodiment is a visible light source 110, that is, an object that can emit visible light by itself, and does not include an invisible light source that emits invisible light such as infrared light, X-rays, etc.
[0032] The condenser lens 120 is a single lens for converging light, and includes a spherical condenser lens 120 and an aspherical condenser lens 120. The spherical condenser lens 120 is used for converging light with a long focal length, while the aspherical condenser lens 120 is used for converging light with a short focal length. The condenser lens 120 can be selected according to actual needs.
[0033] In the striped lens assembly inspection tool provided by the embodiment of the utility model, the light source 110 emits light which is irradiated onto the pattern aperture 200 through the focusing function of the condenser lens 120. The pattern aperture 200 blocks part of the light, and the remaining light which is not blocked is adjusted by the imaging module 300 and projected onto the simulated working surface 400 to form a pattern light spot corresponding to the pattern aperture 200. The user puts the striped lens to be inspected into the pattern light spot of the simulated working surface 400. Since the pattern light spot of the pattern aperture 200 on the simulated working surface 400 through the imaging module 300 matches the lens stripes when the striped lens is correctly assembled, the pattern light spot can be compared with the stripes of the striped lens, and then the striped lens is corrected to ensure that the stripe direction of the striped lens meets the requirements of correct assembly. Then the TIR lens is installed together with the striped lens, so as to improve the efficiency of assembling the striped lens and the TIR lens and improve the yield rate.
[0034] Specifically, if the light spot projected on the simulated working surface 400 by the imaging module 300 when the stripe lens is correctly assembled is circular, then the light spot pattern projected on the simulated working surface 400 by the light passing through the aperture through the imaging module 300 is circular, and the two circles are concentric; if the light spot projected on the simulated working surface 400 by the imaging module 300 when the stripe lens is correctly assembled is annular, then the light spot pattern projected on the simulated working surface 400 by the light passing through the aperture through the imaging module 300 is annular, and the two rings are concentric and have the same ring width; if the light spot projected on the simulated working surface 400 by the imaging module 300 when the stripe lens is correctly assembled is stripe-shaped, then the light spot pattern projected on the simulated working surface 400 by the light passing through the aperture through the imaging module 300 is stripe-shaped, and the stripe widths of the two stripes are consistent.
[0035] In this embodiment, the imaging module 300 is used to adjust the light so that the adjusted light can completely fall on the simulated working surface 400 and form a complete image. Usually, the imaging module 300 is composed of a plurality of positive lenses.
[0036] The utility model discloses a stripe lens assembly and detection tool for calibrating the stripe lens in the process of installing and assembling the TIR lens and the stripe lens.
[0037] In this embodiment, the design of the light path direction is determined according to the actual position of the stripe lens to be inspected, and the light path direction is perpendicular to the placement plane of the stripe lens.
[0038] In this embodiment, the pattern aperture 200 refers to an entity that limits the light emitted by the light source 110. The light emitted by the light source 110 is blocked by an entity of a certain shape. The light not blocked by the pattern aperture 200 passes through the imaging module 300 and is irradiated onto the simulated working surface 400, forming a light spot pattern of a specific shape.
[0039] In this embodiment, the pattern light spot is matched with the lens stripes when the striped lens is correctly assembled in the following manner: the pattern light spot is projected onto the simulated working surface 400 to form a light spot with a shape similar to the stripes on the striped lens. The striped lens is placed into the light spot projection position of the simulated working surface 400, and the pattern light spot is projected onto the striped lens. At this time, it is found that the stripes on the striped lens do not match the direction of the light spot. The position and angle of the striped lens are adjusted so that the stripes on the striped lens are aligned with the pattern light spot.
[0040] Specifically, the light source 110 may be an LED light source 110 , the focusing lens 120 may be a convex lens, preferably a plano-convex lens, and the imaging module 300 includes three spherical lenses.
[0041] In a specific embodiment, the stripe lens to be inspected is set on a horizontal plane, the light source 110 irradiates vertically downward toward the stripe lens to be inspected, and then the focusing lens 120, the pattern aperture 200, the imaging module 300 and the simulated working surface 400 are arranged vertically downward in sequence from the light source 110.
[0042] It should be understood that the simulated working surface 400 is not an actual surface. The simulated working surface 400 is actually based on the surface where the stripe lens is located, and is formed by a light spot projected by a stripe lens assembly detection tooling of the present invention. Therefore, when the surface where the stripe lens is located changes, the simulated working surface 400 also changes accordingly.
[0043] It should be understood that, because most of the light emitted by the light source 110 will be converged into a direct light beam after passing through the focusing lens 120, there is still a small part of the light scattered outside the light beam. The pattern aperture 200 blocks the light scattered outside the light beam, so that this part cannot reach the imaging module 300, so that the uniformity of the pattern light spot on the simulated working surface 400 reaches 90%, and the imaging quality is good.
[0044] Embodiment 2
[0045] Combination Figure 1 As shown, a striped lens assembly and detection tool provided in this embodiment includes:
[0046] The condenser lens 120 is a plano-convex lens, and the side of the condenser lens 120 close to the light source 110 is a plane. The lighting module 100 focuses the light emitted by the light source 110 at the aperture through a plano-convex lens to enhance the brightness of the light spot.
[0047] Embodiment 3
[0048] The present embodiment provides a striped lens assembly inspection tool, including: the light source 110 is an LED light source 110, the LED light source 110 is small in size, low in energy consumption, and long in life, which greatly improves the service life of the tool.
[0049] It should be understood that the light source 110 may also be other types of light sources 110 , such as an incandescent lamp, a metal halide lamp, a fluorescent lamp, and other light sources 110 .
[0050] Embodiment 4
[0051] The present embodiment provides a striped lens assembly and detection tool, including: the wavelength of the light emitted by the light source 110 is 625-760nm.
[0052] The wavelength range of red light is 622-760nm. Red light belongs to long-wavelength light, which can enter the retina of the fundus through the refractive medium. The lens can absorb part of the red light, and most of the red light is absorbed by the retina. Generally speaking, red light is less harmful to the eyes. The patterned light spots formed under the wavelength of red light are less harmful to the human eye, which is beneficial to protect the user's eye health.
[0053] Embodiment 5
[0054] The striped lens assembly and detection tool provided in this embodiment includes: the wavelength of the light emitted by the light source 110 is 630nm.
[0055] The wavelength range of red light is 622-760nm, and the red light of each band has different effects on the human body. For example, the red light of 635nm is also called laser light, which is often used in laser pens. If it is irradiated into the human eye, it can easily cause retinal detachment, which is very harmful to the human eye. The red light of 630nm wavelength is also called "biologically active light". It has low energy and low damage to the human eye. The light source 110 using this band can achieve the corresponding brightness under low energy. The user can operate for a long time without glare while being able to see the projected shape clearly.
[0056] Embodiment 6
[0057] Combination Figure 1 As shown, a stripe lens assembly detection tool provided in this embodiment includes: the imaging module 300 includes a first lens 310, a second lens 320 and a third lens 330 arranged in sequence along the light path direction, the first lens 310 is a concave-convex lens, the second lens 320 and the third lens 330 are convex lenses, and the spot aberration can be well corrected without changing the projection shape to obtain a higher quality pattern spot.
[0058] In a specific implementation, the first lens 310 is a concave-convex lens, the second lens 320 may be a plano-convex lens or other positive lens, and the third lens 330 is a biconvex lens.
[0059] Embodiment 7
[0060] Combination Figure 1 and Figure 3 As shown, a stripe lens assembly inspection tool provided in this embodiment includes: the imaging module 300 includes a square hole aperture, a fourth lens and a fifth lens sequentially arranged along the light path direction, the fourth lens is a concave-convex lens, and the fifth lens is a convex lens. The imaging module 300 only uses the fourth lens and the fifth lens to correct the image, and the edge of the projected light spot will produce obvious aberration, but the shape of the edge of the light spot is blocked by the square hole aperture, leaving only the middle part of the light spot with good image quality, to achieve the same formation effect.
[0061] In a specific implementation, the fourth lens is a meniscus lens, and the fifth lens is a biconvex lens.
[0062] It should be understood that the fifth embodiment and the sixth embodiment are two embodiments of the imaging module 300 , and the user can choose one of them to implement.
[0063] Embodiment 8
[0064] The present embodiment provides a striped lens assembly and detection tool, including: the patterned aperture 200 has an aperture light transmission pattern in the shape of a stripe.
[0065] The lens to be tested in the detection work of this embodiment is a stripe lens. When light passes through the stripe lens, the imaging shape is changed to a stripe shape. The stripe bright spot formed by the stripe lens to be tested needs to meet certain requirements, such as the width of the stripe bright spot and the spacing between adjacent stripe bright spots. When the stripe bright spot meets the requirements, it means that the stripe lens to be tested is qualified.
[0066] The stripe-shaped light-transmitting pattern on the pattern aperture 200 matches the stripes of the stripe lens, that is, the stripe width of the light-transmitting pattern and the distance between adjacent stripes are consistent with the width of the stripe bright spot and the distance between adjacent stripe bright spots required to be formed by the stripe lens to be tested. If the light path of the light passing through the stripe lens to be tested completely passes through the light-transmitting pattern of the aperture to form a complete light spot, it means that the stripe lens is qualified. If the light path of the light passing through the stripe lens to be tested cannot completely pass through the light-transmitting pattern of the aperture, the formed light spot is incomplete and blocked, it means that the stripe lens is unqualified.
[0067] The stripe-shaped aperture light transmission pattern of the pattern aperture 200 is conducive to more quickly and accurately judging whether the stripe lens is qualified.
[0068] Embodiment 9
[0069] The present embodiment provides a stripe lens assembly and detection tool, including: the distance from the last light-emitting surface of the imaging module 300 to the simulated working surface 400 is the working distance, and the working distance is proportional to the radius of the stripe lens to be detected.
[0070] Specifically, under the premise that the imaging module 300 remains unchanged, the larger the radius of the stripe lens is, the larger the corresponding working distance is.
[0071] Embodiment 10
[0072] This embodiment also provides an assembly device, including a striped lens assembly and detection tool in the above-mentioned embodiment.
[0073] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A stripe lens assembly and detection tool, characterized in that: include: An illumination module, a pattern aperture, an imaging module and a simulation work surface are sequentially arranged along the light path direction; The lighting module comprises a light source and a condenser lens, wherein the condenser lens is arranged on one side of the light source along the irradiation direction of the light path; The patterned light spot of the patterned aperture on the simulated working surface through the imaging module matches the lens stripes when the striped lens is correctly assembled.
2. The striped lens assembly and detection tool as claimed in claim 1, characterized in that: The condenser lens is a plano-convex lens, and the side of the convex lens close to the light source is a plane.
3. The striped lens assembly and detection tool as claimed in claim 1, characterized in that: The light source is an LED light source.
4. The striped lens assembly and detection tool as claimed in claim 3, characterized in that: The wavelength of the light emitted by the light source is 625-760nm.
5. The striped lens assembly and detection tool as claimed in claim 4, characterized in that: The wavelength of the light emitted by the light source is 630nm.
6. The striped lens assembly and detection tool as claimed in claim 1, characterized in that: The imaging module comprises a first lens, a second lens and a third lens which are sequentially arranged along the light path direction, the first lens is a concave-convex lens, and the second lens and the third lens are convex lenses.
7. The striped lens assembly and detection tool as claimed in claim 1, characterized in that: The imaging module comprises a square aperture stop, a fourth lens and a fifth lens which are sequentially arranged along the light path direction, the fourth lens is a concave-convex lens, and the fifth lens is a convex lens.
8. The striped lens assembly and detection tool as claimed in claim 1, characterized in that: The aperture light transmission pattern of the pattern aperture is in the shape of stripes.
9. The striped lens assembly and detection tool as claimed in claim 1, characterized in that: The distance from the last light-emitting surface of the imaging module to the simulated working surface is the working distance, and the working distance is proportional to the radius of the stripe lens to be detected.
10. An assembly device, characterized in that: It comprises the striped lens assembly and detection tooling as described in claims 1-9.