CN217209217U - Telecentric light source with uniform brightness for graph measurement - Google Patents
Telecentric light source with uniform brightness for graph measurement Download PDFInfo
- Publication number
- CN217209217U CN217209217U CN202220868703.6U CN202220868703U CN217209217U CN 217209217 U CN217209217 U CN 217209217U CN 202220868703 U CN202220868703 U CN 202220868703U CN 217209217 U CN217209217 U CN 217209217U
- Authority
- CN
- China
- Prior art keywords
- light source
- rear end
- end lens
- lens
- source shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of light source modules, in particular to a telecentric light source with uniform brightness for graph measurement, which comprises a light source shell, a steering lens group and a front end lens group, wherein the steering lens group is arranged inside the light source shell; the front end lens group is arranged on one side of the light source shell, the focusing device comprises a rear end lens group, an LED light source shell, an LED lamp, a condenser lens and a uniform diffusion plate, the LED light source shell is adjusted to slide on the rear end lens group when the focusing device is used, the distance of the light source is adjusted, and light rays emitted by the LED lamp form a light emitting surface with uniform brightness on the uniform diffusion plate after being converged by the condenser lens; light rays emitted by the light emitting surface sequentially pass through the rear end lens group, then are transmitted to the steering lens group in the light source shell, the steering lens group enables the light rays to deflect by 90 degrees, focusing is carried out by moving the position of the LED light source, and the problem that the light ray emitting angle of final emission is large is solved.
Description
Technical Field
The utility model relates to a light source module technical field especially relates to a telecentric light source that is used for figure measuring even luminance.
Background
When the graph is measured, a telecentric light source with uniform brightness for graph measurement can be used, but the illumination brightness of the conventional telecentric light source shows the phenomenon of dark bright edges in the middle, and the image detection precision is influenced.
In the prior art, a condensing lens with a frosted single surface is adopted to converge an LED light source into a softer light source and then emit the light source.
However, in the above manner, since the emission surface of the condenser lens is usually convex, the brightness of the edge emission is still significantly lower than the middle brightness.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a telecentric light source for even luminance of figure measurement aims at solving current device, and when the light emitting area was great, marginal luminance was less than the problem of the shortcoming of central luminance.
In order to achieve the above object, the utility model provides a telecentric light source with uniform brightness for graph measurement, which comprises a light source shell, a steering lens group and a front end lens group, wherein the steering lens group is arranged inside the light source shell; the front end mirror group is arranged on one side of the light source shell,
the focusing device comprises a rear end lens group, an LED light source shell, an LED lamp, a condenser lens and a uniform diffusion plate;
the rear end lens group is arranged on one side of the light source shell, the LED light source shell is connected with the rear end lens group in a sliding mode, and the rear end lens group is located inside the rear end lens group; the LED lamp is fixedly connected with the LED light source shell and is positioned inside the LED light source shell; the condenser lens is fixedly connected with the LED light source shell and is positioned on one side, close to the LED lamp, of the LED light source shell; the uniform diffusion plate is fixedly connected with the LED light source shell and is positioned on one side, close to the condenser lens, of the LED light source shell.
The rear end lens group comprises a rear end lens barrel, a lens structure and a point source light seat, and the rear end lens barrel is fixedly connected with the light source shell and is positioned on one side of the light source shell; the lens structure is arranged on one side of the rear end lens barrel; the point source light seat is in threaded connection with the lens structure, is in sliding connection with the LED light source shell and is located on one side of the lens structure.
The lens structure comprises a rear end lens base and a rear end lens, wherein the rear end lens base is fixedly connected with the rear end lens barrel, is in threaded connection with the point source light base and is positioned on one side of the rear end lens barrel; the rear end lens is fixedly connected with the rear end lens base and is positioned on one side of the rear end lens base.
The lens structure further comprises a rear end pressing ring, wherein the rear end pressing ring is fixedly connected with the rear end lens barrel and is positioned on one side, close to the rear end lens, of the rear end lens barrel.
The steering mirror group comprises a mirror reflector seat and a mirror reflector, and the mirror reflector seat is fixedly connected with the light source shell and is positioned inside the light source shell; the reflector is fixedly connected with the reflector seat and is positioned on one side of the reflector seat.
The front end lens group comprises a front end lens barrel and a front end lens, and the front end lens barrel is fixedly connected with the light source shell and is positioned on one side of the light source shell; the front end lens is fixedly connected with the front end lens barrel and is positioned on one side of the front end lens barrel.
The front end lens group further comprises a front end pressing ring, the front end pressing ring is fixedly connected with the front end lens barrel and is positioned on one side, close to the front end lens, of the front end lens barrel.
The utility model discloses a telecentric light source of even luminance for figure measurement, adjust when using the LED light source shell slide on the rear end lens group, adjust the light source distance, the light that the LED lamp sent forms the light emitting area of even luminance on the even diffuser plate after gathering through the condensing lens; light that the light emitting area sent passes through in proper order the rear end battery of lens, then transmits for inside the light source shell turn to the mirror group, turn to the mirror group and make light deflect 90, focus through removing LED light source position, solve the great problem of light emission angle of final transmission.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural diagram of the whole of a telecentric light source with uniform brightness for graphic measurement according to the present invention.
Fig. 2 is a cross-sectional view of a focusing device for a telecentric light source of uniform brightness for graphic measurement according to the present invention.
Fig. 3 is a cross-sectional view of a uniform brightness telecentric light source for graphic measurement according to the present invention.
101-light source shell, 102-steering lens group, 103-front end lens group, 104-rear end lens group, 105-LED light source shell, 106-LED lamp, 107-condenser lens, 108-uniform diffusion plate, 109-rear end lens barrel, 110-lens structure, 111-point source light base, 112-rear end lens base, 113-rear end lens, 114-rear end pressing ring, 115-reflector base, 116-reflector, 117-front end lens barrel, 118-front end lens and 119-front end pressing ring.
Detailed Description
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of an entire telecentric light source for uniform brightness for graph measurement according to the present invention, fig. 2 is a cross-sectional view of a focusing device for a telecentric light source for uniform brightness for graph measurement according to the present invention, fig. 3 is an entire cross-sectional view of an telecentric light source for uniform brightness for graph measurement according to the present invention, the telecentric light source for uniform brightness for graph measurement according to the present invention comprises a light source housing 101, a steering lens set 102, a front lens set 103 and an adjusting device, the adjusting device comprises a rear lens set 104, an LED light source housing 105, an LED lamp 106, a condenser lens 107 and a uniform diffusion plate 108, the rear lens set 104 comprises a rear lens barrel 109, a lens structure 110 and a point source light base 111, the lens structure 110 comprises a rear lens base 112, a rear lens 113 and a rear end press ring 114, the steering lens group 102 includes a mirror base 115 and a mirror 116, and the front lens group 103 includes a front lens barrel 117, a front lens 118 and a front press ring 119.
For the present embodiment, the turning mirror group 102 is disposed inside the light source housing 101; the front end mirror group 103 is disposed at one side of the light source housing 101, and the turning mirror group 102 refracts the light source by 90 ° in the light source housing 101, and then transmits the light source to the front end mirror group 103 to irradiate the light source.
The rear lens group 104 is disposed on one side of the light source housing 101, the LED light source housing 105 is slidably connected to the rear lens group 104, and is located inside the rear lens group 104; the LED lamp 106 is fixedly connected with the LED light source housing 105 and is located inside the LED light source housing 105; the condenser 107 is fixedly connected with the LED light source housing 105 and is located on one side of the LED light source housing 105 close to the LED lamp 106; the uniform diffusion plate 108 is fixedly connected with the LED light source housing 105, and is located on one side of the LED light source housing 105 close to the condenser lens 107, the LED light source housing 105 is adjusted to slide on the rear end lens assembly 104 to adjust the distance of the light source, and light rays emitted by the LED lamp 106 are converged by the condenser lens 107 to form a light emitting surface with uniform brightness on the uniform diffusion plate 108; light rays emitted from the light emitting surface sequentially pass through the rear end lens group 104.
Secondly, the rear lens barrel 109 is fixedly connected with the light source shell 101 and is positioned on one side of the light source shell 101; the lens structure 110 is disposed on one side of the rear lens barrel 109; the point source light seat 111 is screwed to the lens structure 110, slidably connected to the LED light source housing 105, and located at one side of the lens structure 110, and the point source light seat 111 is used for receiving the light source transmitted to the lens structure 110 on the rear lens barrel 109 and then transmitted to the light source housing 101.
Then, the rear lens holder 112 is fixedly connected with the rear lens barrel 109, is in threaded connection with the point source light holder 111, and is located on one side of the rear lens barrel 109; the rear end lens 113 is fixedly connected with the rear end lens base 112 and is located on one side of the rear end lens base 112, the rear end lens base 112 is used for installing the rear end lens 113, and the rear end lens 113 is used for transmitting a light source.
And thirdly, the rear end pressing ring 114 is fixedly connected with the rear end lens barrel 109 and is positioned on one side of the rear end lens barrel 109 close to the rear end lens 113, and the rear end pressing ring 114 is used for enhancing the connection sealing property between the rear end lens 113 and the rear end lens barrel 109.
Furthermore, the reflector base 115 is fixedly connected with the light source housing 101 and is located inside the light source housing 101; the reflector 116 is fixedly connected with the reflector base 115 and is positioned on one side of the reflector base 115, the reflector 116 is placed in the reflector base 115 and is fixed by silica gel to reduce the stress of a lens caused by mechanical extrusion, and the reflector base 115 is installed inside the light source shell 101 at an angle of 45 degrees with the optical axis and is used for refracting the light source.
In addition, the front lens barrel 117 is fixedly connected with the light source housing 101 and is positioned on one side of the light source housing 101; the front end lens 118 is fixedly connected with the front end lens barrel 117 and located on one side of the front end lens barrel 117, the front end lens barrel 117 is used for supporting the front end lens 118, and the front end lens 118 is used for irradiating a light source.
Finally, the front end pressing ring 119 is fixedly connected to the front end lens barrel 117 and located on one side of the front end lens barrel 117 close to the front end lens 118, and the front end pressing ring 119 is used for enhancing the installation sealing performance of the front end lens 118 and the front end lens barrel 117.
Use the utility model discloses a telecentric light source that is used for even luminance of figure measurement, when using front end lens cone 117 with rear end lens cone 109 angulation, screw thread extinction line processing is done to front end lens cone 117 inner wall, reduces the parasitic light, in the front end lens cone 117 front end lens 118 is F1 for the biconvex type focus, in the rear end lens cone 109 rear end lens 113 is F2 for the plano-convex type focus, F1/F2 is apprxed 4, the focus of front end lens 118 is longer to guarantee the depth of parallelism of emergent ray, the focus of rear end lens 113 is shorter, can shorten the whole length of system, control LED light source shell 105 is in point source light seat 111 slides, adjusts the light source distance, the light that LED lamp 106 sent through behind the collecting mirror 107 assembles form the even light emitting area of luminance on even diffuser plate 108; light that the light emitting area sent transmits for in the rear end lens barrel 109 rear end lens 113, rear end clamping ring 114 will rear end lens 113 compaction improves the seal, then passes through rear end lens 113 transmits the light source for on the reflector base 115 reflector 116, reflector 116 is placed lens stress that mechanical extrusion caused is fixed reduced with silica gel in the reflector base 115, reflector base 115 is installed with being 45 jiaos with the optical axis and is being 90 refraction light source inside light source shell 101, transmits for in the front end lens barrel 117 front end lens 118, carries out the focusing through removing LED light source position, solves the great problem of the light emission angle of final transmission.
While the above disclosure describes one or more preferred embodiments of the present invention, it is not intended to limit the scope of the claims to such embodiments, and one skilled in the art will understand that all or a portion of the processes performed in the above embodiments may be practiced without departing from the spirit and scope of the claims.
Claims (7)
1. A telecentric light source with uniform brightness for image measurement comprises a light source shell, a steering lens group and a front end lens group, wherein the steering lens group is arranged in the light source shell; the front end mirror group is arranged on one side of the light source shell; it is characterized in that the preparation method is characterized in that,
the focusing device comprises a rear end lens group, an LED light source shell, an LED lamp, a condenser lens and a uniform diffusion plate;
the rear end lens group is arranged on one side of the light source shell, the LED light source shell is connected with the rear end lens group in a sliding mode, and the rear end lens group is located inside the rear end lens group; the LED lamp is fixedly connected with the LED light source shell and is positioned inside the LED light source shell; the condenser lens is fixedly connected with the LED light source shell and is positioned on one side, close to the LED lamp, of the LED light source shell; the uniform diffusion plate is fixedly connected with the LED light source shell and is positioned on one side, close to the condenser lens, of the LED light source shell.
2. A telecentric light source of uniform brightness for graphic measurement as claimed in claim 1 wherein,
the rear end lens group comprises a rear end lens barrel, a lens structure and a point source light seat, and the rear end lens barrel is fixedly connected with the light source shell and is positioned on one side of the light source shell; the lens structure is arranged on one side of the rear end lens barrel; the point source light seat is in threaded connection with the lens structure, is in sliding connection with the LED light source shell and is located on one side of the lens structure.
3. A telecentric light source of uniform brightness for graphic measurement as claimed in claim 2 wherein,
the lens structure comprises a rear end lens base and a rear end lens, wherein the rear end lens base is fixedly connected with the rear end lens barrel, is in threaded connection with the point source light base and is positioned on one side of the rear end lens barrel; the rear end lens is fixedly connected with the rear end lens base and is positioned on one side of the rear end lens base.
4. A telecentric light source of uniform brightness for graphic measurement as claimed in claim 3 wherein,
the lens structure further comprises a rear end pressing ring, wherein the rear end pressing ring is fixedly connected with the rear end lens barrel and is positioned on one side, close to the rear end lens, of the rear end lens barrel.
5. A uniformly bright telecentric light source for graphic measurement according to claim 1,
the steering mirror group comprises a mirror reflector seat and a mirror reflector, and the mirror reflector seat is fixedly connected with the light source shell and is positioned inside the light source shell; the reflector is fixedly connected with the reflector seat and is positioned on one side of the reflector seat.
6. A telecentric light source of uniform brightness for graphic measurement as claimed in claim 1 wherein,
the front end lens group comprises a front end lens cone and a front end lens, and the front end lens cone is fixedly connected with the light source shell and is positioned on one side of the light source shell; the front end lens is fixedly connected with the front end lens barrel and is positioned on one side of the front end lens barrel.
7. A telecentric light source of uniform brightness for use in graphic measurements as recited in claim 6 wherein,
the front end lens group further comprises a front end pressing ring, and the front end pressing ring is fixedly connected with the front end lens barrel and is positioned on one side, close to the front end lens, of the front end lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220868703.6U CN217209217U (en) | 2022-04-14 | 2022-04-14 | Telecentric light source with uniform brightness for graph measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220868703.6U CN217209217U (en) | 2022-04-14 | 2022-04-14 | Telecentric light source with uniform brightness for graph measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217209217U true CN217209217U (en) | 2022-08-16 |
Family
ID=82774954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220868703.6U Active CN217209217U (en) | 2022-04-14 | 2022-04-14 | Telecentric light source with uniform brightness for graph measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217209217U (en) |
-
2022
- 2022-04-14 CN CN202220868703.6U patent/CN217209217U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101956912A (en) | Linear CCD light source for automatic optical inspection equipment | |
| CN217209217U (en) | Telecentric light source with uniform brightness for graph measurement | |
| CN112858309A (en) | Screen detection equipment and system | |
| CN210118645U (en) | Collimated light source system | |
| CN215297823U (en) | Microscope device | |
| CN110146973A (en) | A kind of preposition microscopical lighting device | |
| CN115655334A (en) | Portable performance testing device for micro-optical device | |
| CN201297569Y (en) | Improved structure of LED photographic lamp | |
| CN201688219U (en) | Linear CCD light source of automatic optical detecting equipment | |
| CN210243885U (en) | Light filling lamp polarizing lens and shooting equipment using same | |
| CN220707105U (en) | Dome light source structure and detection equipment | |
| CN220626179U (en) | Light source device and vision detection equipment | |
| CN218412952U (en) | TIR lens for FPD detection and lighting module | |
| CN101382264A (en) | LED illuminating apparatus and regulation method for using illumination homogeneity thereof | |
| CN215910327U (en) | Biochemical detection instrument light source light equalizing device and biochemical detection instrument | |
| CN111123686A (en) | Light-transmitting cylindrical lens detection device and detection method thereof | |
| CN218762829U (en) | Square shadowless light source | |
| CN219571718U (en) | Condensing lens, light-emitting unit and light source | |
| CN220603281U (en) | Structure for increasing emission brightness of near infrared ray moisture meter | |
| US7164470B2 (en) | Depth of field enhancement for optical comparator | |
| CN217425811U (en) | Angle-adjustable zoom lens | |
| CN220983614U (en) | Outdoor waterproof light beam lens adapting to laser optics | |
| CN213089478U (en) | LED (light-emitting diode) operating head lamp based on total internal reflection lens | |
| CN204153533U (en) | High definition camera lens picture element detection photo engine | |
| CN210179537U (en) | Zoom light condensing system and spotlight |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |