Photometric linear detection light source
By designing a photometric linear detection light source and utilizing a combination of LED light source group, condenser lens group and refracting prism, the problem of poor detection effect of CCD vision inspection system on 2.5D and edge defects on non-reflective product surfaces was solved, and better detection effect was achieved.
Patent Information
- Application Number
- CN202520016887.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Existing CCD vision inspection systems are ineffective at handling 2.5D and edge defects on non-reflective product surfaces due to poor lighting.
A photometric linear detection light source was designed, which uses a combination of LED light source group, condenser lens group and refracting prism. The condenser lens group focuses the light and the refracting prism refracts the light to form a three-dimensional effect on the product surface.
This improves the detection performance of CCD vision systems for 2.5D surface and edge defects of non-reflective products, enhancing the three-dimensionality and practicality of the detection.
Smart Images
Figure CN223795117U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to detection light source technical field, concretely relates to a photometric linear detection light source. BACKGROUND
[0002] At present, after product production and processing, it needs to be detected, along with the continuous development of the times, product quality detection changes from original manual detection to detection through CCD vision detection system, however, the existing CCD vision detection system still has the problem that the light source lighting effect is not good, and 2.5D and edge defects on the surface of non-reflective products cannot be effectively handled.
[0003] In order to solve this problem, we design a photometric linear detection light source, so as to solve this problem. UTILITY MODEL CONTENTS
[0004] In view of the above technical problems existing in the prior art, the utility model provides a photometric linear detection light source, which solves the problem that the existing CCD vision detection system still has the problem that the light source lighting effect is not good, and 2.5D and edge defects on the surface of non-reflective products cannot be effectively handled.
[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:
[0006] A photometric linear detection light source, which comprises an LED light source group, a condenser lens group and a light folding prism, the condenser lens group is arranged between the LED light source group and the light folding prism, the LED light source group comprises a first LED light source group and a second LED light source group, the first LED light source group and the second LED light source group are linearly distributed, the condenser lens group comprises a first condenser lens group and a second condenser lens group, and the light folding prism comprises a first light folding prism and a second light folding prism; the first condenser lens group, the first LED light source group and the first light folding prism are correspondingly arranged, the second condenser lens group, the second LED light source group and the second light folding prism are correspondingly arranged, the first condenser lens group and the second condenser lens group are symmetrically arranged and inward condense light, and the first light folding prism and the second light folding prism are symmetrically arranged and inward fold light; wherein the light emitted by the first LED light source group is inwardly condensed through the first condenser lens group, and then refracted on the working surface through the first light folding prism; the light emitted by the second LED light source group is inwardly condensed through the second condenser lens group, and then refracted on the working surface through the second light folding prism.
[0007] As a further elaboration of the above technical scheme:
[0008] In the above technical solution, the focusing lens group further includes a strip mounting plate, which is disposed on the light-emitting side of the LED light source group, and the first focusing lens group and the second focusing lens group are linearly distributed on the strip mounting plate.
[0009] In the above technical solution, the midpoint of the strip mounting plate and the midpoint of the refracting prism are located on the same center line, and the first LED light source group and the second LED light source group, the first condensing lens group and the second condensing lens group, and the first refracting prism and the second refracting prism are symmetrically arranged along the center line.
[0010] In the above technical solution, the first LED light source group includes ten first LED light sources, which are arranged at equal intervals and angles. The second LED light source group includes ten second LED light sources corresponding to the ten first LED light sources.
[0011] In the above technical solution, the first condensing lens group includes ten first condensing lenses corresponding to the first LED light source, and the second condensing lens group includes ten second condensing lenses corresponding to the second LED light sources. Both the first condensing lenses and the second condensing lenses are inclined towards the center line. The light emitted by the first LED light source enters the first condensing lens and is focused before being directed towards the first refracting prism. The light emitted by the second LED light source enters the second condensing lens and is focused before being directed towards the first refracting prism.
[0012] In the above technical solution, the tilt angle between the first condensing lens and the second condensing lens is in the range of 0-25°.
[0013] In the above technical solution, the first refracting prism and the second refracting prism are integrally formed. The first refracting prism includes ten first refracting serrations corresponding to the first condensing lens, and the second refracting prism includes ten second refracting serrations corresponding to the second condensing lens. The light rays focused by the first condensing lens enter the first refracting serrations and are refracted on the working surface, and the light rays focused by the second condensing lens enter the second refracting serrations and are refracted on the working surface.
[0014] In the above technical solution, the tips of the first and second refractive saw teeth are both inclined towards the center line.
[0015] In the above technical solution, the inclination angle between the tip of the first refractive sawtooth and the tip of the second refractive sawtooth is in the range of 30-60°.
[0016] In the above technical solution, the light emitted by the first LED light source far from the center line intersects with the light emitted by the second LED light source close to the center line; the light emitted by the first LED light source close to the center line intersects with the light emitted by the second LED light source far from the center line.
[0017] The beneficial effects of this utility model are:
[0018] This utility model has a reasonable design and novel structure. By using a focusing lens group and a refracting prism to focus and refract the light emitted by the LED light source group before it is projected onto the working surface of the product, the CCD vision system can capture a more three-dimensional image of the product. This solves the problems of 2.5D and edge defects on the surface of non-reflective products and is highly practical. Attached Figure Description
[0019] Fig. 1 This is a schematic diagram of the workflow of this utility model;
[0020] Fig. 2 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0021] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.
[0022] Please refer to Figs. 1-2 This embodiment provides a photometric linearity detection light source, which includes an LED light source group 100, a condenser lens group 200, and a refractive prism 300. The condenser lens group 200 is disposed between the LED light source group 100 and the refractive prism 300. The LED light source group 100 includes a first LED light source group 11 and a second LED light source group 12, which are linearly distributed. The condenser lens group 200 includes a first condenser lens group 21 and a second condenser lens group 22. The refractive prism 300 includes a first refractive prism 31 and a second refractive prism 32. The first condenser lens group 21 and the first LED light source group... The first LED light source group 11 is correspondingly arranged with the first refracting prism 31, and the second condensing lens group 22 and the second LED light source group 12 are correspondingly arranged with the second refracting prism 32. The first condensing lens group 21 and the second condensing lens group 22 are symmetrically arranged and converge inward. The first refracting prism 31 and the second refracting prism 32 are symmetrically arranged and converge inward. The light emitted by the first LED light source group 11 is converged inward by the first condensing lens group 21 and then refracted on the working surface by the first refracting prism 31. The light emitted by the second LED light source group 12 is converged inward by the second condensing lens group 22 and then refracted on the working surface by the second refracting prism 32.
[0023] In some alternative embodiments, the condenser lens group 200 further includes a strip mounting plate 400, which is disposed on the light-emitting side of the LED light source group 100, and the first condenser lens group 21 and the second condenser lens group 22 are linearly distributed on the strip mounting plate 400.
[0024] In some alternative embodiments, the midpoint of the strip mounting plate 400 and the midpoint of the refracting prism 300 are located on the same center line, and the first LED light source group 11 and the second LED light source group 12, the first condensing lens group 21 and the second condensing lens group 22, and the first refracting prism 31 and the second refracting prism 32 are symmetrically arranged along the center line.
[0025] In some alternative embodiments, the first LED light source group 11 includes ten first LED light sources, which are arranged at equal intervals and angles, and the second LED light source group 12 includes ten second LED light sources corresponding to the ten first LED light sources.
[0026] In some optional embodiments, the first condensing lens group 21 includes ten first condensing lenses corresponding to the first LED light source, and the second condensing lens group 22 includes ten second condensing lenses corresponding to the second LED light sources. Both the first and second condensing lenses are inclined towards the center line. The light emitted by the first LED light source enters the first condensing lens and is focused before being directed towards the first refracting prism 31. The light emitted by the second LED light source enters the second condensing lens and is focused before being directed towards the first refracting prism 31.
[0027] In some alternative implementations, the tilt angle between the first condenser lens and the second condenser lens ranges from 0 to 25°.
[0028] In some alternative embodiments, the first refracting prism 31 and the second refracting prism 32 are integrally formed. The first refracting prism 31 includes ten first refracting serrations corresponding to the first condensing lens, and the second refracting prism 32 includes ten second refracting serrations corresponding to the second condensing lens. The light rays focused by the first condensing lens enter the first refracting serrations and are refracted on the working surface, and the light rays focused by the second condensing lens enter the second refracting serrations and are refracted on the working surface.
[0029] In some alternative embodiments, the tips of both the first and second refractive serrations are inclined toward the centerline.
[0030] In some alternative embodiments, the angle between the tip of the first refractive serration and the tip of the second refractive serration ranges from 30 to 60°.
[0031] In some alternative implementations, the light emitted by the first LED light source far from the center line intersects with the light emitted by the second LED light source near the center line; the light emitted by the first LED light source near the center line intersects with the light emitted by the second LED light source far from the center line.
[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A photometric line detection light source, characterized by, It includes LED light source group, condenser lens group and light prism, the condenser lens group is equipped between the LED light source group and the light prism, the LED light source group includes first LED light source group and second LED light source group, the first LED light source group and the second LED light source group are linearly distributed, the condenser lens group includes first condenser lens group and second condenser lens group, the light prism includes first light prism and second light prism;The first condenser lens group, the first LED light source group and the first light prism are correspondingly arranged, the second condenser lens group, the second LED light source group and the second light prism are correspondingly arranged, the first condenser lens group and the second condenser lens group are symmetrically arranged and inward condense light, the first light prism and the second light prism are symmetrically arranged and inward refract light;Wherein, the light emitted by the first LED light source group is condensed inward by the first condenser lens group, and then refracted on the working surface by the first light prism;The light emitted by the second LED light source group is condensed inward by the second condenser lens group, and then refracted on the working surface by the second light prism.
2. The photometric line detection light source of claim 1, wherein The condenser lens group further includes a strip-shaped mounting plate, the strip-shaped mounting plate is arranged on the light-emitting side of the LED light source group, and the first condenser lens group and the second condenser lens group are linearly distributed on the strip-shaped mounting plate.
3. The photometric line detection light source of claim 2, wherein, The midpoint of the strip-shaped mounting plate and the midpoint of the light prism are located on the same center line, and the first LED light source group and the second LED light source group, the first condenser lens group and the second condenser lens group, and the first light prism and the second light prism are symmetrically arranged along the center line.
4. The photometric line detection light source of claim 3, wherein, The first LED light source group includes ten first LED light sources, and the ten first LED light sources are arranged at equal intervals and equal angles, and the second LED light source group includes ten second LED light sources corresponding to the ten first LED light sources.
5. A source for linear detection of light intensity according to claim 4, characterized in that, The first condenser lens group includes ten first condenser lenses corresponding to the first LED light sources, and the second condenser lens group includes second condenser lenses corresponding to the ten second LED light sources, and the first condenser lenses and the second condenser lenses are both inclined to the center line;Wherein, the light emitted by the first LED light source enters the first condenser lens and is condensed to the first light prism, and the light emitted by the second LED light source enters the second condenser lens and is condensed to the first light prism.
6. A source for linear detection of light intensity according to claim 5, characterized in that, The inclination angle of the first condenser lens and the second condenser lens ranges from 0 to 25 degrees.
7. The photometric line detection light source of claim 6, wherein, The first light prism and the second light prism are integrally formed, the first light prism includes ten first light small sawteeth corresponding to the first condenser lenses, and the second light prism includes second light small sawteeth corresponding to the ten second condenser lenses;Wherein, the light condensed by the first condenser lens enters the first light small sawtooth and is refracted on the working surface, and the light condensed by the second condenser lens enters the second light small sawtooth and is refracted on the working surface.
8. The photometric line detection light source of claim 7, wherein, The tooth tip of the first light refraction small sawtooth and the tooth tip of the second light refraction small sawtooth are both obliquely arranged towards the middle line.
9. The photometric line detection light source of claim 8, wherein, The inclination angle of the tooth tip of the first light refraction small sawtooth and the tooth tip of the second light refraction small sawtooth ranges from 30 to 60 degrees.
10. The photometric line detection light source of claim 9, wherein, The light emitted by the first LED light source away from the middle line intersects with the light emitted by the second LED light source close to the middle line; the light emitted by the first LED light source close to the middle line intersects with the light emitted by the second LED light source away from the middle line.