CN218298010U - Device for detecting ultrathin optical function sheet by mixing natural light and polarized light into image - Google Patents
Device for detecting ultrathin optical function sheet by mixing natural light and polarized light into image Download PDFInfo
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- CN218298010U CN218298010U CN202222056975.9U CN202222056975U CN218298010U CN 218298010 U CN218298010 U CN 218298010U CN 202222056975 U CN202222056975 U CN 202222056975U CN 218298010 U CN218298010 U CN 218298010U
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Abstract
The utility model discloses a device for detecting ultrathin optical function piece by mixing natural light and polarized light into image, which comprises a transmission type and a reflection type, wherein the transmission type comprises a parallel light source, a polarizer, a hollow sample carrying platform, an analyzer, an imaging lens and a camera which are arranged from bottom to top in sequence; the reflection type sample microscope comprises a hollow sample platform deck, a polarization beam splitter, an analyzer, an imaging lens and a camera which are arranged from bottom to top in sequence, and a parallel light source is arranged on the side face of the polarization beam splitter; the analyzer is rotatably connected. The utility model discloses a natural light image and polarization image matched with mode can accurately detect the position of ultra-thin optical function piece in the processing work piece without mistake, confirms simultaneously whether have ultra-thin optical function piece in each optical material basement, and the accuracy is high, simple easy operation.
Description
Technical Field
The utility model relates to a device that natural light and polarized light mixed formation of image detected ultra-thin optical function piece belongs to the detection area of optics thin slice device.
Background
In the design and manufacturing of optical devices, it is often necessary to use a type of wafer, such as a wafer of optical crystals, which is very thin, usually measured in wavelengths, and mechanically weak enough to be self-supporting for use as a stand-alone device. Engineering practice often requires the use of a substrate of optical material of suitable thickness to which ultra-thin optically functional flakes are bonded (see fig. 1) for further processing into useful optical devices.
Many times, these functional optical sheets (ultra-thin optical functional sheets) have a thickness of less than 0.1mm, i.e., less than 100um. In addition to the small thickness, the light transmission characteristics of the materials make the optical devices difficult/impossible to distinguish by naked eyes during the production and processing processes, the phenomenon that optical sheets are not adhered on the optical substrate materials often occurs, the materials are wasted, the processing time is wasted, the production efficiency is reduced, the production cost is increased, and the quality of the optical devices is seriously influenced if the optical devices are not found before the optical devices are assembled. For this reason, it is urgently required to develop a solution capable of detecting whether an optical sheet is adhered to an optical material substrate, so as to improve the efficiency of an optical device.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device that natural light and polarized light mixed formation of image detected ultra-thin optical function piece through natural light image and polarization image matched with mode, has realized the short-term test of ultra-thin optical function piece.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts as follows:
a method for detecting ultrathin optical function sheet by mixing natural light and polarized light into an image comprises extracting boundary line of each unit element from natural light image, determining position of each unit element, finding and extracting position of ultrathin optical function sheet from polarized image in boundary line of unit element; wherein one unit element includes one optical material substrate and an ultra-thin optical functional sheet bonded on the optical material substrate, or one unit element includes only one optical material substrate.
By the method, whether the ultrathin optical functional sheet is bonded on the optical material substrate can be detected.
The utility model discloses ultra-thin optical function piece includes ultra-thin optical crystal thin slice or other functional material thin slices.
The utility model discloses "ultra-thin" thickness is less than 0.1mm, of course, the application scope of this application is not limited to this thickness, and the scheme of this application is also applicable to the function piece that is more than or equal to 0.1 mm.
The inventor finds in research and development practice that by means of matching of a natural light image and a polarization image, an optical material substrate and an ultrathin optical functional sheet can present different image characteristics, so that distinguishing and identification of whether the optical material substrate of the ultrathin optical functional sheet exists or not is achieved, and the inventor thinks that, under normal conditions, the material of the ultrathin optical functional sheet is greatly different from the optical material substrate, for example, the substrate material is usually glass, the ultrathin optical functional sheet is usually crystal, and as the ultrathin optical functional sheet is adhered to the optical material substrate, the volume of adhesive shrinks during curing, certain stress is inevitably generated at an interface, because the thickness of the optical material substrate is far larger than that of the ultrathin optical functional sheet, stress generated at the interface during adhering is mostly transferred to the ultrathin optical functional sheet, and based on the reason, an anisotropic optical refractive index is generated in the ultrathin optical functional sheet, and when light passes through the ultrathin optical functional sheet, the polarization characteristic is inevitably changed, while glass which is used as the ultrathin optical substrate alone, and when light passes through the glass substrate, the optical material is not obviously changed.
In order to improve the detection efficiency and accuracy, natural light images are fused in the polarization images for display. Thus, the reading of the natural light image and the polarization image characteristics can be completed in one image. Specifically, the information extracted from the natural light image is superimposed on the polarization image according to the corresponding position and displayed. The image superposition technology directly adopts the prior art, and the application does not improve the image superposition technology, so the image superposition technology is not described any more.
The boundary line of the unit cell and the position of the ultra-thin optical functional sheet are extracted by the brightness difference or the color difference with other regions. This is both intuitive and simple.
When the optical material substrate and the ultrathin optical functional sheet are transparent, the acquisition mode of the natural light image and the polarization image is a transmission mode; when the optical material substrate and the ultrathin optical functional sheet are not transparent, or the optical material substrate is not transparent and the ultrathin optical functional sheet is transparent, the acquisition mode of the natural light image and the polarization image is a reflection mode.
When the ultrathin optical functional sheet is opaque and the optical material substrate is transparent, whether an ultrathin optical functional device exists can be visually seen.
The transmission type is as follows: the parallel light source, the polarizer, the unit element, the analyzer, the imaging lens and the camera are sequentially arranged from bottom to top, the analyzer is moved out of a light path, a shot image is a natural light image, the analyzer is moved into the light path, and the shot image is a polarization image;
the reflection type is: the unit elements, the polarization beam splitter, the analyzer, the imaging lens and the camera are sequentially arranged from bottom to top, the parallel light source is arranged on the side face of the polarization beam splitter, the analyzer is moved out of a light path, a shot image is a natural light image, the analyzer is moved into the light path, and the shot image is a polarization image.
In order to reduce the cost, the camera is a CCD camera or a CMOS camera; the polarization beam splitter is in a right-angle prism structure or a plane mirror structure, the light splitting surface of the polarization beam splitter is arranged at 45 degrees, namely the light splitting surface of the polarization beam splitter forms an included angle of 45 degrees with the horizontal or vertical direction, and the light of the parallel light source irradiates on the light splitting surface of the polarization beam splitter at an angle of 45 degrees.
In order to improve the detection efficiency, the unit element has n rows and m columns, wherein n is more than or equal to 1, and m is more than or equal to 1. The size of a device unit is relatively small, in the actual processing and manufacturing process, as shown in fig. 2, n rows and m columns of unit elements can be arranged and bonded on the same substrate, and the processes of cutting, fine grinding, polishing, detecting and the like are completed to improve the efficiency, and the specific values of n and m can be determined according to the sizes of the unit elements, such as 5 rows and 5 columns, 5 rows and 4 columns and the like.
A device for detecting ultrathin optical function sheets by mixing natural light and polarized light into an image comprises a transmission structure and a reflection structure;
the transmission type structure is used for the situation when the optical material substrate and the ultra-thin optical functional sheet are transparent, and comprises a support, a parallel light source, a polarizer, a hollow sample carrying platform, a polarization analyzer, an imaging lens and a camera, wherein the parallel light source, the polarizer, the hollow sample carrying platform, the polarization analyzer, the imaging lens and the camera are sequentially connected to the support from bottom to top;
the reflective structure is used for the situation that an optical material substrate and an ultrathin optical function sheet are not transparent or the optical material substrate is opaque and the ultrathin optical function sheet is transparent, and comprises a support, a parallel light source, a connecting rod, a hollow sample carrying platform, a polarizing beam splitter, an analyzer, an imaging lens and a camera, wherein the hollow sample carrying platform, the polarizing beam splitter, the analyzer, the imaging lens and the camera are sequentially connected onto the support from bottom to top, the parallel light source is connected onto the support through the connecting rod, and the parallel light source is positioned on one side of the polarizing beam splitter, wherein the analyzer is rotatably connected onto the support, the hollow sample carrying platform, the analyzer and the imaging lens are parallel to each other, the parallel light source is opposite to the polarizing beam splitter, light of the parallel light source irradiates onto the polarizing beam splitter, part of the light is reflected downwards to form linearly polarized light, the linearly polarized light irradiates upwards after the linearly polarized light irradiates to a unit element, and sequentially passes through the polarizing beam splitter and the analyzer or enters the camera from the imaging lens through the polarizing beam splitter.
The hollow sample carrying platform means that the sample carrying platform is of a frame structure, so that light rays can conveniently penetrate through unit elements on the sample carrying platform.
In order to save cost, the camera is a CCD camera or a CMOS camera; the polarization beam splitter can adopt a polarization beam splitter, the polarization beam splitter is in a right-angle prism structure or a plane mirror configuration, the splitting surface of the polarization beam splitter is arranged at 45 degrees, namely the splitting surface of the polarization beam splitter forms 45-degree included angles with the horizontal or vertical direction, and the light rays of the parallel light source irradiate on the splitting surface of the polarization beam splitter at 45-degree angles. The light splitting surface of the polarization light splitter forms an included angle of 45 degrees with the hollow sample carrying platform, the analyzer and the imaging lens.
In order to facilitate control, each device further comprises an industrial personal computer, and the parallel light source and the camera are connected with the industrial personal computer and controlled by the industrial personal computer. The industrial personal computer can directly adopt the existing equipment.
For the convenience of control, the polarization analyzer is driven to rotate by a motor arranged on the bracket, and the motor is connected with the industrial personal computer and controlled by the industrial personal computer.
The method for detecting the ultrathin optical function sheet by using the device for detecting the ultrathin optical function sheet by mixing the natural light and the polarized light into an image comprises the following steps when the optical material substrate and the ultrathin optical function sheet are transparent:
1) Turning on a parallel light source, and placing the unit element to be detected on a hollow sample carrying platform;
2) Rotating and moving the analyzer out of the light path, shooting a natural light image under the natural light condition, extracting the boundary line of each unit element through the brightness difference, and determining the position of each unit element;
3) And rotating and moving the analyzer into the light path, shooting a polarization image under the polarization condition, and finding and extracting the position of the ultrathin optical functional sheet through the brightness difference in the boundary line of the unit element.
The ultrathin optical functional sheet can be obviously distinguished from the optical material substrate through the polarization image in the step 3), and whether the ultrathin optical functional sheet exists or not can be easily identified. The polarization imaging greatly enhances the signal difference between the optical material substrate and the ultrathin optical function sheet, can easily distinguish the ultrathin optical function sheet by naked eyes, and can realize automatic interpretation detection.
In the step 2), the analyzer is rotated and moved out of the light path, a natural light image under the natural light condition is shot, and the boundary line of each unit element and other areas form obvious brightness or color difference, so that the boundary line of each unit element can be extracted, and the position of each unit element can be determined;
in step 3), the analyzer is rotated and moved into the light path, a polarization image under the polarization light condition is shot, an obvious high-brightness or high-color difference region appears on the right side of the unit element with the ultrathin optical function sheet, and no high-brightness or high-color difference region appears on the right side of the unit element without the ultrathin optical function sheet, so that whether the position of the ultrathin optical function sheet is found and extracted can be determined.
In order to improve the detection efficiency and accuracy, the natural light image in the step 2) is fused in the polarization image in the step 3) for display, the information extracted from the two images is superposed and fused according to the position corresponding relation, the boundary line of the unit element and the high-brightness stripe area on the right side of the ultrathin optical function sheet can be clearly displayed, the boundary line and the high-brightness stripe area can be visible to the naked eye, the detection result can be automatically interpreted through a computer, the automatic detection can be realized, and the production efficiency is greatly improved.
The operation flow of the reflective scheme is similar to that described above, and is not described again.
The application can combine the existing automation technology to realize full-automatic detection.
The utility model discloses the creative body has fused the imaging characteristics of unit element under the natural light condition and the imaging characteristics under the polarized light condition, has realized discernment and location to ultra-thin optical function piece.
The technology not mentioned in the present invention refers to the prior art.
The utility model discloses natural light and polarized light mixture formation of image detect ultra-thin optical function piece's device, simple structure, easily equipment through natural light image and polarization image matched with mode, can accurately detect the position of ultra-thin optical function piece in the processing work piece with no mistake, confirms simultaneously whether have ultra-thin optical function piece in each optical material basement, and the accuracy is high, simple easy operation.
Drawings
FIG. 1 is a schematic view showing the adhesion of an optical material substrate to an optical functional sheet in the thickness direction;
FIG. 2 is a schematic view of 5 rows and 5 columns of unit elements bonded on the same substrate;
FIG. 3 is a schematic diagram of a principle of obtaining an image by a transmission-type method;
FIG. 4 is a schematic diagram of the principle of obtaining an image by reflection;
FIG. 5 is a schematic view of the structure of the apparatus for detecting an ultra-thin optical functional sheet in embodiment 1 by mixing natural light and polarized light into an image;
FIG. 6 is a natural light image taken in example 1, the left image being an image in which 5 rows and 4 columns of unit elements are bonded together, and the right image being an image of a single unit element;
FIG. 7 is a polarization image taken in example 1, the left image being an image in which 5 rows and 4 columns of unit elements are bonded together, and the right image being an image of a single unit element;
FIG. 8 is a schematic view of a natural-light image superimposed on a polarized image in example 1;
in the figure, 1 is a unit element, 11 is an optical material substrate, 12 is an ultrathin optical functional sheet, 2 is a parallel light source, 3 is a polarizer, 4 is an analyzer, 5 is a camera, 6 is a polarizing beam splitter, 7 is a support, 8 is a hollow sample stage, 9 is an imaging lens, 10 is a motor, and 11 is a power supply line.
Detailed Description
For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, but the present invention is not limited to the following examples.
The terms of orientation such as up, down, left, right, horizontal, vertical, top and bottom, etc. in the present application are all based on the relative orientation or position relationship shown in the drawings, and should not be construed as an absolute limitation to the present application.
In each case, the ultra-thin optical function device is made of crystal material, and the optical material substrate is made of glass material.
Example 1
In this example, the optical material substrate and the ultra-thin optical functional sheet are both made of transparent materials, as shown in fig. 1, the ultra-thin optical functional sheet is adhered on the optical material substrate, because the ultra-thin optical functional sheet and the optical material substrate are both made of optically transparent materials, and the adhesive is also optically transparent, and the thickness of the ultra-thin optical functional sheet is very small, it is difficult to identify whether the ultra-thin optical functional sheet is adhered on the optical material substrate in the production process, which easily causes the occurrence of mixing, and in practice, the phenomenon that the optical material substrate without adhering the ultra-thin optical functional sheet is sent to a customer as a finished product occurs.
A method for detecting ultrathin optical function sheet by mixing natural light and polarized light into image comprises extracting boundary line of each unit element from natural light image, determining position of each unit element, finding and extracting position of ultrathin optical function sheet from polarized image in boundary line; one of the unit elements includes an optical material substrate (glass material) and an ultra-thin optical functional sheet (crystal material, thickness 0.08) bonded to the optical material substrate, or one unit element includes only one optical material substrate. By the method, whether the ultrathin optical functional sheet is bonded on the optical material substrate can be detected.
In this example, the optical material substrate and the ultra-thin optical functional sheet are both visible and transparent, and the natural light image and the polarization image are obtained in a transmission mode, as shown in fig. 3, a polarizing plate is installed above the parallel light source as a polarizer, the illumination light source is changed into linearly polarized light, after the linearly polarized light passes through the optical material substrate and the ultra-thin optical functional sheet, due to the difference of materials and the difference of stress generated in the processing process, the polarization characteristics of the light passing through the light have a large difference, before the light enters the camera lens, a polarizing plate perpendicular to the polarizer is installed as an analyzer, the analyzer is moved out of the light path, the natural light image is shot, the analyzer is moved into the light path, the polarization image is shot, the natural light image is superposed in the polarization image for display, and the detection of the ultra-thin optical functional sheet can be realized by analyzing the difference in the image.
The embodiment adopts a specific structure of the detection device, as shown in fig. 5, the detection device comprises a support, a parallel light source, a polarizer, a hollow sample carrying platform, a polarization analyzer, an imaging lens and a camera, wherein the parallel light source, the polarizer, the hollow sample carrying platform, the polarization analyzer, the imaging lens and the camera are sequentially connected to the support from bottom to top, light rays of the parallel light source are vertical to the polarizer, the hollow sample carrying platform, the polarization analyzer, the imaging lens and the camera lens, and the polarization analyzer is rotatably connected to the support; the camera is a CCD camera, a CMOS camera is certainly selected, and the height of the camera on the bracket is adjustable;
the detection process adopting the device is as follows:
1) Turning on a parallel light source, and placing the unit element to be detected on a hollow sample carrying platform;
2) Rotating and moving the analyzer out of the optical path, and taking a natural light image under natural light conditions, as shown in fig. 6, as is apparent from fig. 6, the boundary lines of the unit elements and other regions form an obvious brightness difference, so that the boundary line of each unit element can be extracted to determine the position of each unit element; slight brightness difference can be shown from the right image of fig. 6, and actually, the ultrathin optical functional sheet is very thin, and the signal difference is very small, so that the ultrathin optical functional sheet cannot be distinguished without careful observation, and further cannot realize automatic detection;
3) Rotating and moving the analyzer into the light path, and shooting a polarization image under the polarization condition, as shown in fig. 7, as is apparent from fig. 7, a stripe region with obvious high brightness appears on the right side of the unit element with the ultrathin optical function sheet, and the stripe region does not appear on the right side of the unit element without the ultrathin optical function sheet, so that whether the position of the ultrathin optical function sheet is found and extracted can be determined;
the natural light image in the step 2) is superimposed on the polarization image in the step 3) to be displayed, as shown in fig. 8, the boundary line of the unit element and the high-brightness stripe region on the right side of the ultrathin optical functional sheet can be obviously seen from fig. 8, and the detection result can be automatically interpreted by a computer. By continuously detecting 10 batches (500-800 pieces in each batch) of unit elements, the accuracy of detecting the ultrathin optical functional sheets (judging whether the ultrathin optical functional sheets exist) reaches 100 percent, and the false judgment rate is 0.
Example 2
On the basis of the embodiment 1, the following improvements are further made: the detection device also comprises an industrial personal computer, the polarization analyzer is driven to rotate by a motor arranged on the bracket, and the parallel light source, the camera and the motor are all connected with the industrial personal computer and controlled by the industrial personal computer.
Example 3
In this example, the optical material substrate and the ultra-thin optical functional sheet are not made of transparent materials, and certainly, when the optical material substrate is opaque and the ultra-thin optical functional sheet is transparent, the method of this example can be adopted, and when the ultra-thin optical functional sheet is opaque and the optical material substrate is transparent, whether the ultra-thin optical functional device is on the optical material substrate can be visually and rapidly seen.
In this example, the natural light image and the polarization image are obtained in a reflective manner, and the natural light image and the polarization image are obtained in a reflective manner, as shown in fig. 4, a uniformly irradiated parallel light source is irradiated onto one polarization beam splitter, half of the light is reflected downward and forms linearly polarized light, the illumination light source is changed into linearly polarized light, and the downwardly irradiated linearly polarized light reaches the ultra-thin optical function device and the optical material substrate and is reflected upward. The beam of light carrying information about the differences between the ultra-thin optical function and the optical material substrate will continue to travel up through the polarization analyzer and into the camera lens. The analyzer is moved out of the light path, the natural light image is shot, the analyzer is moved into the light path, the polarized image is shot, the natural light image is overlapped in the polarized image to be displayed, and the detection of the ultrathin optical function piece can be realized by analyzing the difference in the image.
In this example, the structure of the detection device includes a support, a parallel light source, a connecting rod, a hollow sample stage, a polarization beam splitter, a polarization analyzer, an imaging lens and a camera, wherein the hollow sample stage, the polarization beam splitter, the polarization analyzer, the imaging lens and the camera are sequentially connected to the support from bottom to top, the parallel light source is connected to the support through the connecting rod, and the parallel light source is located on one side of the polarization beam splitter, wherein the polarization analyzer is rotatably connected to the support, the hollow sample stage, the polarization analyzer, the imaging lens and the camera lens are parallel to each other, the parallel light source is opposite to the polarization beam splitter, light of the parallel light source irradiates the polarization beam splitter, part of the light is reflected downwards to form linearly polarized light, and the linearly polarized light irradiated downwards is reflected upwards after reaching the unit element and sequentially passes through the polarization beam splitter and the polarization analyzer or passes through the polarization beam splitter and enters the camera from the imaging lens. In the embodiment, the camera is a CCD camera, a CMOS camera can be adopted, and the height of the camera on the bracket can be adjusted; as shown in fig. 4, the polarization beam splitter has a right-angled prism structure, and may of course have a planar configuration, the splitting surface of the polarization beam splitter is installed at 45 °, the light of the parallel light source irradiates the splitting surface of the polarization beam splitter at an angle of 45 °, and the splitting surface of the polarization beam splitter forms an angle of 45 ° with the hollow sample stage, the analyzer, and the imaging lens.
The process and the phenomenon of detecting whether the ultrathin optical functional sheet exists on each optical material substrate by adopting the device are the same as those in the embodiment 1, and the detection accuracy of the ultrathin optical functional sheet reaches 100 percent.
Example 4
On the basis of the embodiment 3, the following improvements are further made: the detection device also comprises an industrial personal computer, the polarization analyzer is driven to rotate by a motor arranged on the bracket, and the parallel light source, the camera and the motor are all connected with the industrial personal computer and controlled by the industrial personal computer.
Claims (8)
1. A device for detecting ultrathin optical function sheet by mixing natural light and polarized light into image, which is used for detecting a unit element (1), wherein the unit element (1) comprises an optical material substrate (11) and an ultrathin optical function sheet (12) adhered on the optical material substrate (11), or the unit element (1) only comprises the optical material substrate (11), and is characterized in that: comprises a transmission type structure and a reflection type structure;
the transmission type structure is used for the situation when an optical material substrate (11) and an ultrathin optical functional sheet (12) are both transparent, and comprises a support (7), a parallel light source (2), a polarizer (3), a hollow sample carrying platform (8), a polarization analyzer (4), an imaging lens (9) and a camera (5), wherein the parallel light source (2), the polarizer (3), the hollow sample carrying platform (8), the polarization analyzer (4), the imaging lens (9) and the camera (5) are sequentially connected onto the support (7) from bottom to top, light of the parallel light source (2) is perpendicular to the polarizer (3), the hollow sample carrying platform (8), the polarization analyzer (4) and the imaging lens (9), and the polarization analyzer (4) is rotatably connected onto the support (7);
the reflective structure is used for the situation when an optical material substrate (11) and an ultrathin optical function sheet (12) are not transparent or the optical material substrate (11) is opaque and the ultrathin optical function sheet (12) is transparent, the reflective structure comprises a support (7), a parallel light source (2), a connecting rod, a hollow sample carrying platform (8), a polarization beam splitter (6), an analyzer (4), an imaging lens (9) and a camera (5), the hollow sample carrying platform (8), the polarization beam splitter (6), the analyzer (4), the imaging lens (9) and the camera (5) are sequentially connected onto the support (7) from bottom to top, the parallel light source (2) is connected onto the support (7) through the connecting rod, and the parallel light source (2) is positioned at one side of the polarization beam splitter (6), wherein the analyzer (4) is rotatably connected onto the support (7), the hollow sample carrying platform (8), the analyzer (4) and the imaging lens (9) are mutually parallel, the parallel light source (2) and the polarization beam splitter (6) are opposite, light rays of the parallel light source (2) are irradiated onto the polarization beam splitter (6) and form a linearly polarized light beam, and pass through the polarization beam splitter (6) and then pass through the polarization beam splitter (6) and then reach the polarization beam splitter in sequence, and the polarization beam splitter (1) and the polarization beam splitter and then pass through the polarization beam splitter (6) and the polarization beam splitter to form a linearly polarized light component (6) and then pass through the polarization beam splitter ) Enters the camera (5).
2. The apparatus for detecting ultra-thin optical functional sheet by imaging of mixed natural light and polarized light as claimed in claim 1, wherein: the camera (5) is a CCD camera or a CMOS camera.
3. The device for detecting ultrathin optical functional sheet by mixing natural light and polarized light into image as claimed in claim 1 or 2, characterized in that: the polarization beam splitter (6) is in a right-angle prism structure or a plane mirror configuration.
4. The device for detecting ultrathin optical functional sheet by mixing natural light and polarized light into image as claimed in claim 1 or 2, characterized in that: the light splitting surface of the polarization light splitter (6) is arranged at an angle of 45 degrees, and the light of the parallel light source (2) irradiates the light splitting surface of the polarization light splitter (6) at an angle of 45 degrees.
5. The device for detecting the ultra-thin optical functional sheet by mixing the natural light and the polarized light into an image as claimed in claim 1 or 2, wherein: the light splitting surface of the polarization light splitter (6) forms an included angle of 45 degrees with the hollow sample carrying platform (8), the analyzer (4) and the imaging lens (9).
6. The device for detecting ultrathin optical functional sheet by mixing natural light and polarized light into image as claimed in claim 1 or 2, characterized in that: the analyzer (4) is driven to rotate by a motor (10) arranged on the bracket (7).
7. The device for detecting ultrathin optical functional sheet by mixing natural light and polarized light into image as claimed in claim 1 or 2, characterized in that: the device is characterized by further comprising an industrial personal computer, wherein the parallel light source (2), the camera (5) and the motor (10) are all connected with the industrial personal computer and controlled by the industrial personal computer.
8. The device for detecting the ultra-thin optical functional sheet by mixing the natural light and the polarized light into an image as claimed in claim 1 or 2, wherein: the unit elements (1) have n rows and m columns, wherein n is more than or equal to 1 and m is more than or equal to 1.
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| CN202222056975.9U CN218298010U (en) | 2022-08-05 | 2022-08-05 | Device for detecting ultrathin optical function sheet by mixing natural light and polarized light into image |
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| CN202222056975.9U CN218298010U (en) | 2022-08-05 | 2022-08-05 | Device for detecting ultrathin optical function sheet by mixing natural light and polarized light into image |
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