CN217519691U - Line light source and detection system - Google Patents
Line light source and detection system Download PDFInfo
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- CN217519691U CN217519691U CN202221345003.5U CN202221345003U CN217519691U CN 217519691 U CN217519691 U CN 217519691U CN 202221345003 U CN202221345003 U CN 202221345003U CN 217519691 U CN217519691 U CN 217519691U
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Abstract
The utility model relates to an optical equipment technical field discloses a line light source and detecting system, including light emitting component, follow light emitting component's emergent ray's light path is equipped with in proper order: the first condenser is used for condensing and adjusting the emergent light rays along a first direction; the second condenser is used for condensing and adjusting the emergent light rays along a second direction; and the third light condensing lens is used for condensing and adjusting the emergent light rays along the second direction. The first condenser for condensing and adjusting emergent rays in the first direction, and the second condenser and the third condenser for condensing and adjusting emergent rays in the second direction are arranged, so that the condensing effect of the light-emitting component is effectively improved, and the illumination condition of a working area can be met; meanwhile, the service life of the light-emitting component can be prolonged because the power of the light-emitting component does not need to be increased.
Description
Technical Field
The utility model relates to an optical equipment technical field especially relates to a line light source and detecting system.
Background
The line light source has the advantages of good light condensation effect, high brightness and the like, and is usually used for being matched with a line scanning camera and a lens to be applied to various visual detection items.
In the prior art, the linear light source adopts the round rod-shaped lens to realize light condensation, although the scheme can effectively reduce the material cost, the light condensation efficiency is not high, the linear light source has the defects of low brightness, divergent light spots and the like, and the light condensation effect is difficult to meet the actual demand. In order to improve the brightness of the light source, a method of increasing the power of the LED is generally adopted at present, and the LED element is in a full-load or nearly full-load operating state to improve the luminous intensity of the LED.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a line light source and detecting system solves the problem that the spotlight effect of prior art line laser is difficult to satisfy the actual demand.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a line light source, includes light emitting component, follows the light path of light emitting component's emergent ray is equipped with in proper order:
the first condenser is used for condensing and adjusting the emergent light rays along a first direction;
the second condenser is used for condensing and adjusting the emergent light rays along a second direction;
and the third light condensing lens is used for condensing and adjusting the emergent light rays along the second direction.
Optionally, the first condenser, the second condenser and the third condenser are cylindrical mirrors;
the bus direction of the first condenser is perpendicular to the first direction, and the bus directions of the second condenser and the third condenser are both perpendicular to the second direction;
the first direction is perpendicular to the second direction.
Optionally, the first condenser lens includes a first planar translucent surface and a first cylindrical translucent surface, the first planar translucent surface is disposed toward the light emitting assembly, and the first cylindrical translucent surface is disposed away from the light emitting assembly;
the second condenser lens comprises a second plane light-transmitting surface and a second cylindrical light-transmitting surface, the second plane light-transmitting surface faces the light-emitting assembly, and the second cylindrical light-transmitting surface deviates from the light-emitting assembly;
the third lens comprises a third plane light-transmitting surface and a third cylindrical light-transmitting surface, the third plane light-transmitting surface is arranged away from the light-emitting component, and the third cylindrical light-transmitting surface is arranged towards the light-emitting component;
the first cylindrical surface light-transmitting surface, the second cylindrical surface light-transmitting surface and the third cylindrical surface light-transmitting surface are convex surfaces.
Optionally, the first cylindrical surface light-transmitting surface, the second cylindrical surface light-transmitting surface and the third cylindrical surface light-transmitting surface all satisfy a quadric equation:
wherein k is a conic coefficient, R is a curvature radius, C 2 ＝X 2 +Y 2 X, Y, Z is the coordinate with the focal point as the origin of coordinates.
Optionally, the linear light source satisfies the following relation:
0.2≤d 1 /f 1 ≤0.4；
wherein d is 1 Distance from the first condenser to the light emitting element, f 1 Is the focal length of the first condenser.
Optionally, the linear light source satisfies the following relation:
0.5≤d 2 /f 2 ≤0.7；
wherein d is 2 Is the distance from the second condenser to the light-emitting component, f 2 Is the focal length of the second condenser lens.
Optionally, the linear light source satisfies the following relation:
0.7≤d 3 /f 3 ≤1.3；
wherein d is 3 Distance from the third condenser to the light emitting element, f 3 Is the focal length of the third condenser.
Optionally, the linear light source satisfies the following relation:
0.7≤f 3 /f 2 ≤2；
wherein f is 2 Is the focal length of the second condenser, f 3 Is the focal length of the third condenser.
Optionally, the line light source further includes a housing, and the light emitting assembly, the first condenser, the second condenser and the third condenser are all disposed in the housing; the shell is provided with a light outlet, a protection plate is arranged in the light outlet, the protection plate is a light-transmitting element, and the surface of the protection plate is provided with a diffusion film;
the light-emitting assembly comprises a substrate, at least two light emitters are arranged on the substrate, and a light blocking sheet is arranged between every two adjacent light emitters.
The utility model also provides a detecting system, include as above arbitrary the line source.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a line light source and detection system, through setting up the first condensing lens that carries out spotlight regulation to the emergent ray of first direction to and set up carry out spotlight regulation to the emergent ray of second direction second condensing lens and third condensing lens, improved the spotlight effect of light-emitting component effectively, in order to satisfy the illumination condition of work area; meanwhile, the service life of the light-emitting component can be prolonged because the power of the light-emitting component does not need to be increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a line light source provided by the present invention;
fig. 2 is a schematic structural view of a line light source at another viewing angle according to the present invention;
fig. 3 is a schematic diagram of a light path of a line light source provided by the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 3.
In the above figures: 10. a light emitting assembly; 11. a substrate; 12. a light emitter; 13. a light blocking sheet; 20. a first condenser lens; 21. a first planar light-transmitting surface; 22. a first cylindrical light-transmitting surface; 30. a second condenser lens; 31. A second planar light-transmitting surface; 32. a second cylindrical light-transmitting surface; 40. a third condenser lens; 41. a third planar light transmitting surface; 42. a third cylindrical light-transmitting surface; 51. a housing; 52. and (6) protecting the sheet.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Referring to fig. 1 to 4, the present invention provides a line light source, which includes a housing 51, a light emitting assembly 10 for emitting emergent light is disposed in the housing 51, and a light outlet is disposed on the housing 51 along a light path of the emergent light;
a protective sheet 52 is arranged in the light outlet, and the protective sheet 52 can play a dustproof effect; meanwhile, in order to ensure the irradiation effect of the emitted light, the protective sheet 52 is a light-transmitting member, and the surface of the protective sheet 52 is provided with a diffusion film having a light-uniformizing effect.
The light emitting assembly 10 is fixed in the housing 51, and includes a substrate 11, at least two light emitters 12 are disposed on the substrate 11, a light blocking sheet 13 is disposed between adjacent light emitters 12, and the light blocking sheet 13 is used for preventing interference due to stray light, so as to ensure focusing performance of the light source. When the substrate 11 is provided with the plurality of light emitters 12, the plurality of light emitters 12 are uniformly and closely arranged on the substrate 11, so that a complementary effect can be generated, and the illumination effect is enhanced.
It is understood that the substrate 11 is a base for arranging the light emitters 12, and may be a PCB board for supplying current thereto, and may be other components capable of achieving the same effect.
In this embodiment, the first condenser 20, the second condenser 30, and the third condenser 40 are sequentially disposed along the light path of the emergent light of the light emitting module 10, and the first condenser 20, the second condenser 30, and the third condenser 40 are all fixed in the housing 51.
The first condenser lens 20 is used for condensing the emergent light rays in a first direction, and the second condenser lens 30 and the third condenser lens 40 are used for condensing the emergent light rays in a second direction. Referring to fig. 1 and 3, the first direction is perpendicular to the second direction, and the first direction is an X direction in the drawing, and the second direction is a Y direction in the drawing.
The first condenser 20, the second condenser 30 and the third condenser 40 are cylindrical mirrors.
Specifically, the first condenser 20 has a first plane light-transmitting surface 21 and a first cylindrical light-transmitting surface 22, the first plane light-transmitting surface 21 is a plane, the first cylindrical light-transmitting surface 22 is a cylindrical surface, further, the first cylindrical light-transmitting surface 22 is a convex surface, and a generatrix direction of the first cylindrical light-transmitting surface 22 is arranged along the Y direction; the first condenser lens 20 can converge the light angle in the X direction, thereby improving the condensing effect of the emergent light in the X direction.
The second condenser lens 30 has a second planar light-transmitting surface 31 and a second cylindrical light-transmitting surface 32; the third prism 40 has a third planar light transmitting surface 41 and a third cylindrical light transmitting surface 42.
Specifically, the second planar light-transmitting surface 31 and the third planar light-transmitting surface 41 are both planes, and the second cylindrical light-transmitting surface 32 and the third cylindrical light-transmitting surface 42 are both cylindrical surfaces; the second cylindrical light-transmitting surface 32 and the third cylindrical light-transmitting surface 42 are convex surfaces, and the generatrix direction of the second cylindrical light-transmitting surface 32 and the third cylindrical light-transmitting surface 42 is arranged along the X direction; based on this, the second condenser 30 and the third condenser 40 converge the light angle in the Y direction, thereby improving the condensing effect of the emergent light in the Y direction.
In this embodiment, the first plane light-transmitting surface 21 of the first condenser lens 20 is disposed toward the light emitting module 10, and the first cylindrical light-transmitting surface 22 is disposed away from the light emitting module 10.
Wherein, the second plane light-transmitting surface 31 of the second condenser lens 30 is disposed towards the light-emitting assembly 10, and the second cylindrical light-transmitting surface 32 is disposed away from the light-emitting assembly 10; the third planar light transmitting surface 41 of the third condenser lens 40 is disposed away from the light emitting assembly 10, and the third cylindrical light transmitting surface 42 is disposed toward the light emitting assembly 10; based on this, the cylindrical surfaces of the second condenser 30 and the third condenser 40 are disposed to face each other.
In this embodiment, the cylindrical generatrix direction of the first condenser 20 is perpendicular to the cylindrical generatrix directions of the second condenser 30 and the third condenser 40, so that a better light collecting effect and a better focusing effect can be obtained.
Further, the first cylindrical light-transmitting surface 22, the second cylindrical light-transmitting surface 32, and the third cylindrical light-transmitting surface 42 all satisfy the quadric equation:
wherein k is a conic coefficient, R is a curvature radius, C 2 ＝X 2 +Y 2 X, Y, Z are coordinates with the focal point as the origin of coordinates. When the first cylindrical light-transmitting surface 22, the second cylindrical light-transmitting surface 32 and the third cylindrical light-transmitting surface 42 satisfy the aforementioned conditions, the refraction of the light beam can be achieved well so as to obtain a desired light-condensing effect.
Further, the linear light source also satisfies the following relation:
0.2≤d 1 /f 1 ≤0.4；
wherein, d 1 Distance from the first condenser lens 20 to the light emitting element 10, f 1 Is the focal length of the first condenser lens 20. By making the first condenser lens 20 satisfy the aforementioned conditions, a better light collecting effect can be achieved.
Further, the linear light source also satisfies the following relation:
0.5≤d 2 /f 2 ≤0.7；
wherein d is 2 Distance f from the second condenser lens 30 to the light-emitting element 10 2 Is the focal length of the second condenser lens 30. By making a secondThe condenser 30 satisfies the aforementioned conditions, and can further improve the collimation effect of the light emitted from the light emitting assembly 10.
Further, the linear light source also satisfies the following relation:
0.7≤d 3 /f 3 ≤1.3；
wherein d is 3 Distance from the third condenser 40 to the light-emitting assembly 10, f 3 Is the focal length of the third condenser lens 40. By having the third condenser 40 satisfy the aforementioned conditions, the outgoing light passing through the second condenser 30 can be better focused on the work surface.
In addition, the linear light source also satisfies the following relation:
0.7≤f 3 /f 2 ≤2；
wherein, f 2 Is the focal length of the second condenser 30, f 3 Is the focal length of the third condenser lens 40. The focal length ratio of the third condenser lens 40 and the second condenser lens 30 is reasonably planned, so that the focusing effect of the first condenser lens 20, the second condenser lens 30 and the third condenser lens 40 can be further improved, meanwhile, the linear light source can have a better size, and the size miniaturization is favorably realized.
Based on the foregoing embodiment, the embodiment of the utility model provides a detection system is still provided, include as above arbitrary line source to and line sweep camera and camera lens. Because the line light source has excellent light condensation effect and high uniformity and brightness, the detection system provided by the embodiment has excellent detection effect and can meet different detection requirements.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The line light source is characterized by comprising a light emitting component (10), wherein the light path of emergent light rays of the light emitting component (10) is sequentially provided with:
the first condenser lens (20), the first condenser lens (20) is used for carrying out condensation adjustment on the emergent ray along a first direction;
the second condenser (30), the said second condenser (30) is used for carrying on the condensation adjustment along the second direction to the said emergent ray;
and the third light condensing lens (40), wherein the third light condensing lens (40) is used for condensing and adjusting the emergent light rays along the second direction.
2. The line light source of claim 1, wherein the first condenser (20), the second condenser (30) and the third condenser (40) are cylindrical mirrors;
wherein the generatrix direction of the first condenser lens (20) is arranged perpendicular to the first direction, and the generatrix directions of the second condenser lens (30) and the third condenser lens (40) are both arranged perpendicular to the second direction;
the first direction is perpendicular to the second direction.
3. The line light source of claim 2, wherein the first condenser lens (20) comprises a first planar light transmissive surface (21) and a first cylindrical light transmissive surface (22), the first planar light transmissive surface (21) being disposed toward the light emitting assembly (10), the first cylindrical light transmissive surface (22) being disposed away from the light emitting assembly (10);
the second condenser lens (30) comprises a second plane light-transmitting surface (31) and a second cylindrical light-transmitting surface (32), the second plane light-transmitting surface (31) is arranged towards the light-emitting assembly (10), and the second cylindrical light-transmitting surface (32) is arranged away from the light-emitting assembly (10);
the third light focusing mirror (40) comprises a third planar light transmitting surface (41) and a third cylindrical light transmitting surface (42), the third planar light transmitting surface (41) is arranged away from the light emitting assembly (10), and the third cylindrical light transmitting surface (42) is arranged towards the light emitting assembly (10);
the first cylindrical light-transmitting surface (22), the second cylindrical light-transmitting surface (32) and the third cylindrical light-transmitting surface (42) are convex surfaces.
4. The line light source of claim 3, wherein the first cylindrical light transmissive surface (22), the second cylindrical light transmissive surface (32), and the third cylindrical light transmissive surface (42) each satisfy a quadratic equation:
wherein k is a coefficient of a quadric surface, R is a curvature radius, C 2 ＝X 2 +Y 2 X, Y, Z are coordinates with the focal point as the origin of coordinates.
5. The line light source of claim 4, wherein the line light source satisfies the following relationship:
0.2≤d 1 /f 1 ≤0.4；
wherein d is 1 Distance f of the first condenser (20) from the light-emitting component (10) 1 Is the focal length of the first condenser lens (20).
6. The line light source of claim 4, wherein the line light source satisfies the following relationship:
0.5≤d 2 /f 2 ≤0.7；
wherein d is 2 Is the distance from the second condenser (30) to the light-emitting component (10), f 2 Is the focal length of the second condenser (30).
7. The line light source of claim 4, wherein the line light source satisfies the following relationship:
0.7≤d 3 /f 3 ≤1.3；
wherein d is 3 Is the third condenser (40) to the light emitting assembly(10) Distance of (f) 3 Is the focal length of the third condenser (40).
8. The line light source of claim 4, wherein the line light source satisfies the following relationship:
0.7≤f 3 /f 2 ≤2；
wherein f is 2 Is the focal length of the second condenser (30), f 3 Is the focal length of the third condenser (40).
9. The line light source of claim 1, further comprising a housing (51), the light emitting assembly (10), the first condenser (20), the second condenser (30), and the third condenser (40) all being disposed within the housing (51); a light outlet is formed in the shell (51), a protective sheet (52) is arranged in the light outlet, the protective sheet (52) is a light-transmitting element, and a diffusion film is arranged on the surface of the protective sheet (52);
the light-emitting assembly (10) comprises a substrate (11), at least two light emitters (12) are arranged on the substrate (11), and a light blocking sheet (13) is arranged between every two adjacent light emitters (12).
10. A detection system comprising a line light source as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221345003.5U CN217519691U (en) | 2022-05-31 | 2022-05-31 | Line light source and detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221345003.5U CN217519691U (en) | 2022-05-31 | 2022-05-31 | Line light source and detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217519691U true CN217519691U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221345003.5U Active CN217519691U (en) | 2022-05-31 | 2022-05-31 | Line light source and detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217519691U (en) |
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2022
- 2022-05-31 CN CN202221345003.5U patent/CN217519691U/en active Active
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