CN113805404B - Uniform lighting device for line scanning photoelectric imaging - Google Patents
Uniform lighting device for line scanning photoelectric imaging Download PDFInfo
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- CN113805404B CN113805404B CN202111357912.0A CN202111357912A CN113805404B CN 113805404 B CN113805404 B CN 113805404B CN 202111357912 A CN202111357912 A CN 202111357912A CN 113805404 B CN113805404 B CN 113805404B
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The application discloses even lighting device for line scanning optoelectronic imaging relates to optoelectronic imaging technical field, and even lighting device includes: the diffuse reflector is integrally cylindrical, the inner wall surface of the diffuse reflector comprises a peripheral side surface, a first end surface and a second end surface, a strip-shaped light outlet and a strip-shaped light inlet are formed in the peripheral side surface, the strip-shaped light outlet and the strip-shaped light inlet both extend to the second end surface along the axial direction of the diffuse reflector from the first end surface, and the strip-shaped light inlet is positioned on the side of the strip-shaped light outlet; the integrating sphere light source is arranged on the diffuse reflector and is provided with a light output port; the optical fiber light guide assembly is provided with a light inlet end and a plurality of light outlet ends, the light inlet end is positioned at the light output port, the light outlet ends are positioned at the strip-shaped light inlet, and the light outlet ends are uniformly distributed along the axial direction of the diffuse reflector. The uniform lighting device can output uniform linear scanning beams and is suitable for high-precision linear scanning photoelectric imaging.
Description
Technical Field
The application relates to the technical field of photoelectric imaging, in particular to a uniform illumination device for line scanning photoelectric imaging.
Background
Uniform source illumination is a fundamental technical requirement for illumination in active illumination imaging. At present, various LED illuminations are adopted to directly obtain uniform illumination, but most of the LED illuminations are used for landscape or indoor illumination, the requirement on uniformity of illumination is low, and the LED illuminations are not suitable for high-precision line scanning photoelectric imaging.
Disclosure of Invention
The application provides a uniform lighting device for line scanning photoelectric imaging, is applicable to high accuracy line scanning photoelectric imaging for solve present uniform lighting device and be not suitable for the problem of high accuracy line scanning photoelectric imaging.
In particular, the present application provides a uniform illumination device for line scanning optoelectronic imaging, comprising:
the diffuse reflector is cylindrical as a whole and is of a hollow closed structure; the inner wall surface of the diffuse reflector comprises a peripheral side surface, a first end surface and a second end surface, wherein a strip-shaped light outlet and a strip-shaped light inlet are formed in the peripheral side surface, the strip-shaped light outlet and the strip-shaped light inlet both extend to the second end surface from the first end surface along the axial direction of the diffuse reflector, and the strip-shaped light inlet is positioned on the side of the strip-shaped light outlet; the peripheral side surface comprises a first part which is arranged opposite to the strip-shaped light outlet, and the first part is provided with an opening;
an integrating sphere light source mounted on the diffuse reflector, the integrating sphere light source having a light output port;
the optical fiber light guide assembly is provided with a light inlet end and a plurality of light outlet ends, the light inlet end is located at the light output port, the light outlet ends are located at the strip-shaped light inlet, and the light outlet ends are uniformly distributed along the axial direction of the diffuse reflector.
The beneficial effect of this application does: when the uniform illumination device is applied to line scanning photoelectric imaging, a spectrum camera is installed at the opening of the first part, a lens of the spectrum camera is aligned to a strip-shaped light outlet, an integrating sphere light source is opened, light output by a light output port of the integrating sphere light source is transmitted to the strip-shaped light inlet through an optical fiber light guide assembly and enters a diffuse reflector through the strip-shaped light inlet, multiple diffuse reflection of the light occurs on the inner wall of the diffuse reflector, the light is emitted from the strip-shaped light outlet after uniform light mixing, uniform line scanning light beams are output, the uniform illumination device or an imaging target is driven by a driver to move back and forth along the direction perpendicular to the axial direction of the diffuse reflector, and high-precision line scanning photoelectric imaging can be realized by carrying out image acquisition on the imaging target through the spectrum camera.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of a uniform illumination device according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a diffuse reflector according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of an optical fiber light guide assembly according to an embodiment of the present application;
fig. 4 is a partial structural diagram of a peripheral side surface in an embodiment of the present application.
Reference numerals:
10. a diffuse reflector; 11. a circular arc surface; 111. a first portion; 112. a second portion; 12. a bottom plane; 13. a first end face; 14. a second end face; 15. a strip light outlet; 16. a strip-shaped light inlet; 17. opening a hole; 20. an integrating sphere light source; 30. an optical fiber light guide assembly; 31. a first adapter; 32. a second adapter; 321. a support; 322. a bayonet; 33. a light guide optical fiber; 40. a supporting seat; 50. a spectral camera.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The application provides a uniform illumination device for line scanning photoelectric imaging, which can solve the problem that the existing uniform illumination device is not suitable for high-precision line scanning photoelectric imaging.
Specifically, as shown in fig. 1 to 4, the uniform illumination apparatus includes a diffuse reflector 10, an integrating sphere light source 20, and a fiber optic light guide assembly 30.
The diffuse reflector 10 is cylindrical as a whole, and the diffuse reflector 10 is of a hollow closed structure; the inner wall surface of the diffuse reflector 10 comprises a peripheral side surface, a first end surface 13 and a second end surface 14, the peripheral side surface is provided with a strip-shaped light outlet 15 and a strip-shaped light inlet 16, the strip-shaped light outlet 15 and the strip-shaped light inlet 16 both extend from the first end surface 13 to the second end surface 14 along the axial direction of the diffuse reflector 10, and the strip-shaped light inlet 16 is positioned on the side of the strip-shaped light outlet 15; the peripheral side surface comprises a first part 111 arranged opposite to the strip-shaped light outlet 15, and an opening 17 is formed in the first part 111; it should be noted that the diffuse reflector 10 may be made of opaque metal such as aluminum, iron, or copper, and of course, the diffuse reflector 10 may also be made of opaque plastic or wood, and the present application is not limited specifically.
An integrating sphere light source 20 is mounted on the diffuse reflector 10, the integrating sphere light source 20 having a light output port; it should be noted that, the integrating sphere light source 20 is also called a light-passing sphere light source, and is a hollow complete sphere shell, the inner wall of the integrating sphere light source 20 is coated with a white diffuse reflection layer, and each point of the inner wall is diffused uniformly, and one or more window holes used as light output ports are formed on the sphere, compared with light sources such as LEDs, the integrating sphere light source 20 can output light with more uniform spectrum mixing, and the specific working principle of the integrating sphere light source 20 has been disclosed earlier in the related art, and this application is not described in detail.
The optical fiber light guide assembly 30 has a light inlet end and a plurality of light outlet ends, the light inlet end is located at the light output port, the light outlet end is located at the strip-shaped light inlet 16, and the light outlet ends are uniformly arranged along the axial direction of the diffuse reflector 10.
It can be understood that, the uniform arrangement means that the distances between any two adjacent light-emitting ends are the same, and the distance between two adjacent light-emitting ends can be selected according to actual requirements, which is not specifically limited in the present application, and generally speaking, the smaller the distance between two adjacent light-emitting ends is, the more uniform the illumination of the uniform illumination device is; the optical fiber can transmit light along the wire like current, so that the optical fiber light guide assembly 30 can guide the light output from the light output port through the light inlet end and guide the light out to the strip-shaped light inlet 16 through the light outlet end.
It should be noted that, in the present application, when the uniform illumination device is applied to line scanning photoelectric imaging, the spectral camera 50 is installed at the opening 17 of the first portion 111, the lens of the spectral camera 50 is aligned with the strip light outlet 15, the integrating sphere light source 20 is turned on, light output from the light output port of the integrating sphere light source 20 is transmitted to the strip light inlet 16 through the optical fiber light guide assembly 30 and is incident into the diffuse reflector 10 through the strip light inlet 16, the light is subjected to multiple diffuse reflections on the inner wall of the diffuse reflector 10, and is emitted from the strip light outlet 15 after being uniformly mixed, so as to output a uniform line scanning light beam, at this time, the uniform illumination device is driven by the driver to move back and forth along a direction perpendicular to the axial direction of the diffuse reflector 10, or the uniform illumination device remains stationary, and the imaging target is driven by the driver to move along a direction perpendicular to the axial direction of the diffuse reflector 10, meanwhile, high-precision line scanning photoelectric imaging can be realized by carrying out image acquisition on an imaging target through the spectrum camera 50, the specific working principle of the line scanning photoelectric imaging is disclosed in the related technology, and no description is made in the application.
It can be understood that, compared to using LED light sources to provide illumination on the first end surface 13 and the second end surface 14 of the diffuse reflector 10 and forming a line-shaped scanning beam by using the diffuse reflector 10, even if the LED light sources on the first end surface 13 and the second end surface 14 have symmetry, it is difficult to ensure that the diffuse reflector 10 outputs a uniform line-shaped scanning beam extending along the axial direction of the diffuse reflector 10; in the present application, the strip-shaped light inlet 16 extends along the axial direction of the diffuse reflector 10, and the plurality of light-emitting ends are uniformly arranged at the strip-shaped light inlet 16 to form a point light source array, so that the diffuse reflector 10 can be ensured to output uniform linear scanning light beams extending along the axial direction of the diffuse reflector 10, and the specific principle can be obtained through theoretical analysis or professional illumination simulation software (such as Trace Pro) through simulation calculation.
It should be noted that the uniform illumination device can also be applied to an imaging spectrometer, a complete spectral image of an imaging target is obtained after a spectral image of the imaging target is acquired by using the uniform illumination device, color measurement values of points of the target to be measured can also be obtained according to the complete spectral image of the target to be measured and a related algorithm, so that color measurement of the target to be measured is completed, and a method for calculating the color measurement values according to the spectral image has been disclosed earlier in the prior art, which is not described in detail in the present application.
It can be understood that, because the uniform illumination device can output more uniform illumination, when the uniform illumination device is applied to the imaging spectrometer, the measurement error of color measurement of the target to be measured can be reduced, and the integrating sphere light source 20 can output more uniform light with spectrum mixing, which can satisfy illumination in the full spectrum range including ultraviolet, visible and near infrared, the application range is wider, the spectral imaging is formed by combining the imaging mode of slit type linear scanning beam push-scanning, which is particularly suitable for digital museum collection spectral imaging of art painting, night unmanned aerial vehicle earth observation spectral imaging, underwater spectral imaging or spectral imaging under the condition of no illumination in a closed room, the influence of stray illumination can be greatly reduced, and simultaneously, the trouble of the problem of Bidirectional scattering Distribution (BSBSD) during one-time large-breadth imaging can be avoided, thereby achieving higher spectral measurement accuracy.
Referring to fig. 1-3, in some embodiments of the present application, the fiber optic light guide assembly 30 includes a first adapter 31, a second adapter 32, and a light guide fiber 33.
Specifically, the first adapter 31 is located at the optical output port; the second adapter 32 is located at the strip-shaped light inlet 16 and connected to the diffuse reflector 10, the second adapter 32 includes a support 321 arranged along the axial direction of the diffuse reflector 10, the support 321 is provided with a plurality of bayonets 322, and the plurality of bayonets 322 are arranged along the axial direction of the diffuse reflector 10; one end of the light guide fiber 33 is connected to the integrating sphere light source 20 through the first adapter 31, and is used for receiving the light output from the light output port; the other end of the light guide fiber 33 is clamped to the bayonet 322 and is used for guiding the light output by the light output port out to the strip-shaped light inlet 16; the light guide optical fibers 33 are provided with a plurality of light guide optical fibers 33, and the light guide optical fibers 33 correspond to the bayonets 322 one by one.
It should be noted that, the end of the light guide fiber 33 connected to the first adapter 31 is the light inlet end of the optical fiber light guide assembly 30, the end of the light guide fiber 33 connected to the second adapter 32 is the light outlet end of the optical fiber light guide assembly 30, the light output from the light output port can be guided out to the strip-shaped light inlet 16 through the light guide fiber 33, and the bayonet 322 on the support 321 can limit the light outlet end of the light guide fiber 33, so that the light outlet ends of all the light guide fibers 33 are uniformly arranged along the axial direction of the diffuse reflector 10.
The light inlet ends of all the light guide optical fibers 33 can be completely overlapped to form a light guide optical fiber bundle, so that the size of the light outlet is reduced on the premise that the light outlet of the integrating sphere light source 20 can meet the light guide requirements of all the light guide optical fibers 33, the light outlet is made to be as small as possible, and the uniformity of light output by the light outlet is improved.
It should be noted that, the diameters of all the light guide fibers 33 are uniform and the lengths thereof are equal, and the integrating sphere light source 20 can output light with uniform spectral mixing, so that the uniformity of the spectral distribution of the light energy coupled into each light guide fiber 33 over the whole spectrum can be ensured.
In an embodiment of the present disclosure, the light guide fiber 33 may be made of a plastic such as polymethyl methacrylate (PMMA, acrylic) with low cost.
It should be noted that the illumination intensity of the light output from the strip-shaped light outlet 15 of the diffuse reflector 10 depends on the light transmission diameter of the single light guide fiber 33 and the light emission intensity of the integrating sphere light source 20; generally, the higher the luminous power of the integrating sphere light source 20, the more light energy is coupled into the light guiding fiber 33; the larger the diameter of the single light guiding fiber 33 is, the larger the light energy coupled into the single light guiding fiber 33 is.
Taking the light intensity per unit area output by the light output port of the integrating sphere light source 20 as σ, the length of the strip-shaped light inlet 16 along the axial direction of the diffuse reflector 10 as L, and the diameter of the single light guiding fiber 33 as D as an example, the number N of the light guiding fibers 33 is:
the light energy E transmitted from the integrating-sphere light source 20 to the diffuse reflector 10 by the fiber-optic light guide assembly 30 is:
as can be seen from the above, E is proportional to D, and the light guide fiber 33 with the largest diameter is selected, so that the higher the light energy E transmitted to the diffuse reflector 10 is, the higher the illumination intensity of the linear scanning beam output by the diffuse reflector 10 is; the existing light guide fiber 33 is generally made of fused silica and generally applied to the field of optical communication, and mainly meets optical signal conduction, so that the diameter of the existing fused silica light guide fiber is smaller and is generally 50 micrometers at most, and the light guide fiber 33 in the application needs to conduct light energy, so that the light guide fiber 33 is made of plastics such as PMMA (polymethyl methacrylate), and the diameter of the plastic light guide fiber 33 can be 3000 micrometers.
In an embodiment of the present application, a fastening block is fixed on the bracket 321, a bayonet 322 matched with the fastening block is arranged at an end of the diffuse reflector 10, and the fastening block is snapped in the bayonet 322, so as to implement the installation of the bracket 321 on the diffuse reflector 10.
With continued reference to fig. 1 to fig. 3, in an embodiment of the present application, two strip-shaped light inlets 16 are provided, and the two strip-shaped light inlets 16 are symmetrically distributed about a preset plane a, where the preset plane a is perpendicular to the strip-shaped light inlets 16.
The optical fiber light guide assemblies 30 are provided with two groups, the light outlet end of one group of optical fiber light guide assemblies 30 is located at one strip-shaped light inlet 16, and the light outlet end of the other group of optical fiber light guide assemblies 30 is located at the other strip-shaped light inlet 16.
It should be noted that, by providing two strip light inlets 16 and configuring an optical fiber light guide assembly 30 for each strip light inlet 16, the two strip light inlets 16 can both input light into the diffuse reflector 10, so as to improve the illumination intensity of the linear scanning beam output by the diffuse reflector 10, and meanwhile, the two strip light inlets 16 are symmetrically distributed about the preset plane a, so as to improve the uniformity of the linear scanning beam output by the diffuse reflector 10.
It should be noted that only one integrating sphere light source 20 may be provided, and both sets of optical fiber light guide assemblies 30 are connected to one integrating sphere light source 20; of course, two integrating sphere light sources 20 may be provided, and one set of the optical fiber light guide assembly 30 is connected to one integrating sphere light source 20, and the other set of the optical fiber light guide assembly 30 is connected to the other integrating sphere light source 20.
Referring to fig. 2 to 4, in an embodiment of the present application, the peripheral side further includes a second portion 112, the light emitting end faces the second portion 112, and the second portion 112 is spaced apart from the first portion 111 and the strip-shaped light emitting port 15.
It can be understood that, if the light-emitting end faces the strip light-emitting port 15, the light emitted from the light-emitting end can directly emit through the strip light-emitting port 15, and if the strip light-emitting port 15 faces the first portion 111, the first portion 111 is a portion opposite to the strip light-emitting port 15 on the peripheral side surface, and most of the light emitted from the light-emitting end can be emitted through the strip light-emitting port 15 after being reflected on the first portion 111, so that the light is not uniformly mixed in the diffuse reflector 10, and the uniformity of the linear scanning beam output by the diffuse reflector 10 is poor.
In the present application, since the light-emitting end faces the second portion 112, the light emitted from the light-emitting end firstly irradiates to the second portion 112, and the light emitted from the light-emitting end irradiates to other portions of the peripheral side surface after being diffused on the second portion 112, so that the light emitted from the light-emitting end can be diffused multiple times in the diffuse reflector 10, thereby improving the uniformity of the linear scanning beam output by the diffuse reflector 10.
With continued reference to fig. 2 to 4, in an embodiment of the present application, the peripheral side surface includes a circular arc surface 11 and a bottom plane 12, and the bottom plane 12 extends from the first end surface 13 to the second end surface 14 along the axial direction of the diffuse reflector 10.
The strip-shaped light outlet 15 is located on the bottom plane 12, and the first portion 111 is located on the circular arc surface 11; it can be understood that when the uniform illumination device is used, the strip-shaped light outlet 15 is located at the bottom of the diffuse reflector 10, the bottom plane 12 can make the placement of the diffuse reflector 10 more stable when the diffuse reflector 10 is used, and the smaller the bottom plane 12 is, the narrower the strip-shaped light outlet 15 on the bottom plane 12 is, so that the uniformity of the linear scanning light beam emitted from the strip-shaped light outlet 15 is higher, and the narrower the strip-shaped light outlet 15 is, the smaller the probability that the light emitted from the strip-shaped light inlet 16 into the diffuse reflector 10 is directly emitted from the strip-shaped light outlet 15 is, so that the light emitted from the strip-shaped light inlet 16 into the diffuse reflector 10 can be sufficiently reflected in the diffuse reflector 10.
Further, the opening 17 is located at the center of the first portion 111, so that the spectral camera 50 installed at the opening 17 can capture images.
Further, the arc surface 11, the first end surface 13 and the second end surface 14 are covered with polytetrafluoroethylene paint layers, and the bottom plane 12 is covered with a black paint layer.
It should be noted that the teflon paint layer is a white paint layer, which can diffuse light, and the black paint layer can absorb light, and the black paint can be polyurethane paint.
It should be noted that the teflon paint has a very high reflectivity for light with a spectral range of 200 nm to 2500 nm, and the light guide fiber 33 made of PMMA has a high transmittance for light with a spectral range of 350 nm to 1600 nm, so that the response spectral range of the uniform illumination device in the present application is 350 nm to 1600 nm, which can satisfy the technical requirement of implementing line scanning photoelectric imaging by using a low-cost spectral camera 50 (e.g., silicon-based charge coupled device or cmos camera, silicon-based charge coupled device and cmos camera with a response spectral range of 350 nm to 1050 nm).
With continued reference to fig. 2 to 4, in an embodiment of the present application, the first end surface 13 and the second end surface 14 are both five sixths of a circle, and it can be understood that the circumference of the circular arc portion of the first end surface 13 is five sixths of the circumference of the circle on which the contour of the first end surface 13 is located, and the circumference of the circular arc portion of the second end surface 14 is five sixths of the circumference of the circle on which the contour of the second end surface 14 is located.
It should be noted that, when the ratio of the length of the diffuse reflector 10 to the diameter of the end face of the diffuse reflector 10 is larger, it is more difficult to ensure the uniformity of the linear scanning beam output by the diffuse reflector 10, in the present application, the larger the ratio of the circular arc portion of the end face of the diffuse reflector 10 to the circumference, the larger the ratio of the circular arc surface 11 to the inner wall surface of the diffuse reflector 10 is, the more times of the diffuse reflection that the light entering the diffuse reflector 10 from the strip-shaped light inlet 16 may experience in the inner wall surface of the diffuse reflector 10 are, so that the more uniform the linear scanning beam output by the diffuse reflector 10 is.
Specifically, as shown in fig. 1 and fig. 2, the uniform illumination device may further include a support base 40, the diffuse reflector 10 is mounted on the support base 40, the strip-shaped light outlet 15 is disposed near the support base 40, a strip-shaped opening corresponding to the strip-shaped light outlet 15 is disposed on the support base 40, and the strip-shaped opening is communicated with the strip-shaped light outlet 15; the side of the support base 40 away from the diffuse reflector 10 is a plane, and the support base 40 can make the uniform illumination device more stably placed when the uniform illumination device is used, and at the same time, facilitate the uniform illumination device or the imaging target to move in a direction perpendicular to the axial direction of the diffuse reflector 10.
Further, diffuse reflector 10 with supporting seat 40 can be dismantled and be connected, integrating sphere light source 20 with diffuse reflector 10 can be dismantled and be connected, optic fibre leaded light subassembly 30 with integrating sphere light source 20 and diffuse reflector 10 can be dismantled and be connected, and each part in the lighting device can be connected through bolted connection, joint or riveting etc. can dismantle the connected mode to each part's loading and unloading in the even lighting device of being convenient for.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A uniform illumination device for line scanning electrophotographic imaging, comprising:
the diffuse reflector is cylindrical as a whole and is of a hollow closed structure; the inner wall surface of the diffuse reflector comprises a peripheral side surface, a first end surface and a second end surface, wherein a strip-shaped light outlet and a strip-shaped light inlet are formed in the peripheral side surface, the strip-shaped light outlet and the strip-shaped light inlet both extend to the second end surface from the first end surface along the axial direction of the diffuse reflector, and the strip-shaped light inlet is positioned on the side of the strip-shaped light outlet; the peripheral side surface comprises a first part which is arranged opposite to the strip-shaped light outlet, and the first part is provided with an opening;
an integrating sphere light source mounted on the diffuse reflector, the integrating sphere light source having a light output port;
the optical fiber light guide assembly is provided with a light inlet end and a plurality of light outlet ends, the light inlet end is located at the light output port, the light outlet ends are located at the strip-shaped light inlet, and the light outlet ends are uniformly distributed along the axial direction of the diffuse reflector.
2. The uniform illumination device for line scanning optoelectronic imaging according to claim 1, wherein said fiber optic light guide assembly comprises:
a first adapter located at the optical output port;
the second adapter is positioned at the strip-shaped light inlet and connected with the diffuse reflector, the second adapter comprises a support which is arranged along the axial direction of the diffuse reflector, the support is provided with a plurality of bayonets, and the bayonets are arranged along the axial direction of the diffuse reflector;
one end of the light guide optical fiber is connected with the integrating sphere light source through the first adapter and is used for accessing the light output by the light output port; the other end of the light guide optical fiber is clamped and connected with the bayonet and is used for guiding the light output by the light output port out to the strip-shaped light inlet; the light guide optical fibers are provided with a plurality of the light guide optical fibers, and the light guide optical fibers correspond to the bayonets one by one.
3. The uniform illumination device for line scanning photoelectric imaging according to claim 1 or 2, wherein two strip-shaped light inlets are provided, and the two strip-shaped light inlets are symmetrically distributed about a preset plane, and the preset plane is perpendicular to the strip-shaped light inlets;
the optical fiber light guide assemblies are provided with two groups, the light outlet ends of one group of optical fiber light guide assemblies are positioned at one strip-shaped light inlet, and the light outlet ends of the other group of optical fiber light guide assemblies are positioned at the other strip-shaped light inlet.
4. The uniform illumination device for line scanning optoelectronic imaging according to claim 3, wherein said peripheral side surface further comprises a second portion, said light exit end faces said second portion, and said second portion is spaced apart from said first portion and said strip-shaped light exit port.
5. The uniform illumination device for line scanning optoelectronic imaging according to claim 1, wherein said peripheral side surface comprises a circular arc surface and a bottom plane, said bottom plane extending from said first end surface to said second end surface along an axial direction of said diffuse reflector;
the strip-shaped light outlet is located on the bottom plane, and the first portion is located on the arc surface.
6. A uniform illumination device for line scanning optoelectronic imaging as claimed in claim 5, wherein said aperture is located in the center of said first portion.
7. The uniform illumination device for line scanning optoelectronic imaging according to claim 5, wherein said circular arc surface, said first end surface and said second end surface are covered with polytetrafluoroethylene paint layers, and said bottom plane is covered with black paint layers.
8. The uniform illumination device for line scanning optoelectronic imaging according to claim 1, wherein said first end face and said second end face are each five sixths of a circle.
9. The uniform illumination device for line scanning optoelectronic imaging according to claim 1, further comprising a supporting base, wherein the diffuse reflector is mounted on the supporting base, the strip-shaped light-emitting port is disposed close to the supporting base, a strip-shaped opening corresponding to the strip-shaped light-emitting port is disposed on the supporting base, and the strip-shaped opening is communicated with the strip-shaped light-emitting port.
10. The uniform illumination device for line scanning optoelectronic imaging according to claim 9, wherein the diffuse reflector is detachably connected to the supporting base, the integrating sphere light source is detachably connected to the diffuse reflector, and the optical fiber light guide assembly is detachably connected to the integrating sphere light source and the diffuse reflector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111357912.0A CN113805404B (en) | 2021-11-17 | 2021-11-17 | Uniform lighting device for line scanning photoelectric imaging |
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| CN202111357912.0A CN113805404B (en) | 2021-11-17 | 2021-11-17 | Uniform lighting device for line scanning photoelectric imaging |
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| CN113805404B true CN113805404B (en) | 2022-02-18 |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1489806A (en) * | 1974-04-05 | 1977-10-26 | Environmental Res & Tech | Light equalizer |
| JPH11281918A (en) * | 1998-03-26 | 1999-10-15 | Nippon Avionics Co Ltd | Optical integrator |
| CN1241747A (en) * | 1997-12-25 | 2000-01-19 | 卡西欧计算机株式会社 | Commodity image data processors, recording mediums which contain commodity image data processing program, and image pickup aiding apparatus |
| CN1538200A (en) * | 2003-04-16 | 2004-10-20 | 台达电子工业股份有限公司 | Optical homogenzing device and optical instrument having said light homogenizing device |
| TWI235875B (en) * | 2004-06-08 | 2005-07-11 | Delta Electronics Inc | Projection system and its light tunnel |
| GB0819068D0 (en) * | 2008-10-17 | 2008-11-26 | Buhler Sortex Ltd | Light guide and illumination assembly incorporating the same |
| EP2023170A2 (en) * | 2007-07-30 | 2009-02-11 | The Boeing Company | Homogenizing optical beam combiner |
| TWM360992U (en) * | 2008-12-24 | 2009-07-11 | Global Lighting Technologies Taiwan Inc | LED (light emitting diode) lamp tube |
| CN202815392U (en) * | 2011-08-04 | 2013-03-20 | 松下电器产业株式会社 | Camera equipment |
| CN104834095A (en) * | 2014-10-17 | 2015-08-12 | 深圳市科曼医疗设备有限公司 | Dodging device based on multi-color light beam and optical system |
| CN204989637U (en) * | 2015-07-17 | 2016-01-20 | 南京先进激光技术研究院 | Optical wand is spared to dissipation spot |
| RU2015118358A (en) * | 2012-10-18 | 2016-12-10 | Лимо Патентфервальтунг Гмбх Унд Ко. Кг | DEVICE FOR LIGHTING THE INTERNAL SIDE OF THE CYLINDER WITH LIGHT AND A DEVICE FOR TRANSFORMING RAYS FOR SUCH A DEVICE |
| CN106842776A (en) * | 2017-04-04 | 2017-06-13 | 吴卫军 | Diameter-variable light beam tube |
| CN106992428A (en) * | 2016-12-15 | 2017-07-28 | 西南技术物理研究所 | The closed tube chamber of profile pump alkali metal vapour laser |
| CN110928108A (en) * | 2019-12-30 | 2020-03-27 | 深圳盛达同泽科技有限公司 | Improved device of lighting source |
-
2021
- 2021-11-17 CN CN202111357912.0A patent/CN113805404B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1489806A (en) * | 1974-04-05 | 1977-10-26 | Environmental Res & Tech | Light equalizer |
| CN1241747A (en) * | 1997-12-25 | 2000-01-19 | 卡西欧计算机株式会社 | Commodity image data processors, recording mediums which contain commodity image data processing program, and image pickup aiding apparatus |
| JPH11281918A (en) * | 1998-03-26 | 1999-10-15 | Nippon Avionics Co Ltd | Optical integrator |
| CN1538200A (en) * | 2003-04-16 | 2004-10-20 | 台达电子工业股份有限公司 | Optical homogenzing device and optical instrument having said light homogenizing device |
| TWI235875B (en) * | 2004-06-08 | 2005-07-11 | Delta Electronics Inc | Projection system and its light tunnel |
| EP2023170A2 (en) * | 2007-07-30 | 2009-02-11 | The Boeing Company | Homogenizing optical beam combiner |
| GB0819068D0 (en) * | 2008-10-17 | 2008-11-26 | Buhler Sortex Ltd | Light guide and illumination assembly incorporating the same |
| TWM360992U (en) * | 2008-12-24 | 2009-07-11 | Global Lighting Technologies Taiwan Inc | LED (light emitting diode) lamp tube |
| CN202815392U (en) * | 2011-08-04 | 2013-03-20 | 松下电器产业株式会社 | Camera equipment |
| RU2015118358A (en) * | 2012-10-18 | 2016-12-10 | Лимо Патентфервальтунг Гмбх Унд Ко. Кг | DEVICE FOR LIGHTING THE INTERNAL SIDE OF THE CYLINDER WITH LIGHT AND A DEVICE FOR TRANSFORMING RAYS FOR SUCH A DEVICE |
| CN104834095A (en) * | 2014-10-17 | 2015-08-12 | 深圳市科曼医疗设备有限公司 | Dodging device based on multi-color light beam and optical system |
| CN204989637U (en) * | 2015-07-17 | 2016-01-20 | 南京先进激光技术研究院 | Optical wand is spared to dissipation spot |
| CN106992428A (en) * | 2016-12-15 | 2017-07-28 | 西南技术物理研究所 | The closed tube chamber of profile pump alkali metal vapour laser |
| CN106842776A (en) * | 2017-04-04 | 2017-06-13 | 吴卫军 | Diameter-variable light beam tube |
| CN110928108A (en) * | 2019-12-30 | 2020-03-27 | 深圳盛达同泽科技有限公司 | Improved device of lighting source |
Non-Patent Citations (4)
| Title |
|---|
| Optical, electrical and thermal;Mathieu Sicre, Damien Jaffre, Rachid Elouamari,;《AIP Conference Proceedings》;20150217;全文 * |
| 介质涂敷电大腔体电磁散射IPO研究;何小祥等;《电子与信息学报》;20050120(第01期);全文 * |
| 大动态范围可调线性偏振度参考光源检测与不确定度分析;康晴等;《光学学报》;20150410(第04期);全文 * |
| 大口径高能量激光测量中后向散射能量研究;王雷等;《激光技术》;20060228(第01期);全文 * |
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