Spectral chip and spectral device

Abstract

The present invention relates to a spectral chip and a spectral device. The spectral chip includes: a quantum dot thin film, which is divided into a first region and a second region. The first region is provided with quantum dots, while the second region is a region without quantum dots or a region with quantum dots having a concentration lower than that of the quantum dots provided in the first region. The light of an incident light source irradiates the first region and the second region; a chip target surface, on which the quantum dot thin film is attached, is used to receive the light transmitted from the first region and output a first signal, receive the light transmitted from the second region and output a second signal. The detection result of the spectral chip is based on the first signal and the second signal, and the layout of the first region and the second region is determined according to the information related to the intensity spatial distribution of the incident light source and / or the spectral resolution to be achieved by the spectral chip. Thereby, the detection error caused by the uneven intensity spatial distribution can be effectively eliminated and the spectral resolution can be improved.

Description

Technical Field

[0001] The present invention relates to the field of optical technology, and in particular to a spectral chip and a spectral device. Background Art

[0002] In the related art, spectrometers usually use multi-channel array sensors, which improve the uniformity of the spatial distribution of light intensity through complex optical structures such as microlens arrays, pinholes, diffusers, compound eye homogenizers, homogenizer rods, etc. Summary of the invention

[0003] In view of this, the present invention proposes a spectral chip and a spectral device.

[0004] According to one aspect of the present invention, there is provided a spectral chip, comprising: a quantum dot film, which is divided into a first area and a second area, the first area is provided with quantum dots and the second area is an area where quantum dots are not provided or an area where quantum dots are provided at a concentration lower than that of the quantum dots provided in the first area, and light from an incident light source irradiates the first area and the second area; and a chip target surface, the quantum dot film is attached to the chip target surface, the chip target surface is used to receive light transmitted from the first area and output a first signal as the intensity of the light transmitted from the first area, and to receive light transmitted from the second area and output a second signal as the intensity of the light transmitted from the second area, the detection result of the spectral chip is based on the first signal and the second signal, wherein the layout of the first area and the second area is determined based on information related to the spatial distribution of the intensity of the incident light source and / or the spectral resolution to be achieved by the spectral chip.

[0005] In one possible implementation, the information related to the intensity spatial distribution of the incident light source includes at least one of the intensity spatial distribution data of the incident light source, information related to the intensity spatial distribution data, uniformity data of the intensity spatial distribution of the incident light source, information related to the uniformity data, and information characterizing whether the intensity spatial distribution of the incident light source is uniform.

[0006] In one possible implementation, the layout of the first region and the second region includes at least one of the following: the shape, size, quantity, and location of each of the first region and the second region; the positional relationship and arrangement of the first region and the second region; and the type, concentration, and arrangement of quantum dots deployed in each of the first regions.

[0007] In one possible implementation, when the spatial distribution of the intensity of the incident light source is uniform, if the entire quantum dot film includes multiple rectangular blocks, the first region and the second region are laid out in a layout manner in which the rectangular blocks at corresponding positions are set as the second region and the rectangular blocks at the remaining positions are set as the first region, and the set second regions are uniformly distributed in the multiple rectangular blocks.

[0008] In one possible implementation, when the spatial distribution of the intensity of the incident light source is uneven, if the entire quantum dot film includes multiple rectangular blocks, the first area and the second area are laid out in a layout manner in which each rectangular block is set as the first area and the second area is set in the gap between the rectangular blocks.

[0009] In one possible implementation, setting a second area in the gap between each rectangular block includes: setting at least one second area at the four sides of a circumscribed rectangle spaced at a corresponding distance from each rectangular block; or setting at least one second area at the four corners of a circumscribed rectangle spaced at a corresponding distance from each circular block; or setting at least one second area at the four sides and four corners of a circumscribed rectangle spaced at a corresponding distance from each rectangular block.

[0010] In a possible implementation, when the spatial distribution of the intensity of the incident light source is uniform, the first area and the second area are arranged in a layout manner in which at least one second area is arranged around a portion of the first area and no second area is arranged around the remaining first area.

[0011] In a possible implementation manner, when the spatial distribution of the intensity of the incident light source is uneven, the first regions and the second regions are arranged in a layout manner in which at least one second region is arranged around each first region.

[0012] In a possible implementation, the layout of the first area and the second area is determined according to information related to the correction of the spatial distribution of the intensity of the incident light source and / or the size of the chip target surface and the quantum dot film.

[0013] In one possible implementation, the first areas and the second areas are arranged in a layout manner in which a first number of second areas with corresponding sizes and shapes are arranged at first corresponding positions and a second number of first areas with corresponding sizes and shapes are arranged at second corresponding positions, so that the correction accuracy of the spectral chip manufactured thereby meets the correction threshold under the condition that the sizes of the chip target surface and the quantum dot film are met.

[0014] In one possible implementation, when there is a light spot, a larger number and / or larger size of second areas are set at the edge of the light spot compared to the interior of the light spot; and / or a larger number and / or larger size of second areas are set at the position where the light spots overlap compared to the position where the light spots do not overlap.

[0015] According to another aspect of the present invention, a spectral device is provided, comprising: the above-mentioned spectral chip; a correction unit, used to correct the first signal using the second signal to eliminate the detection error caused by the uneven spatial distribution of the intensity and / or meet the spectral resolution requirement.

[0016] In a possible implementation manner, the correction unit determines a correction coefficient to be used to correct the first signal according to the coordinates and the grayscale value of the second area.

[0017] The spectral chip and spectral device of the present invention can automatically select the layout of the first area and the second area that are compatible with the intensity spatial distribution requirements and / or spectral resolution requirements, thereby effectively eliminating the detection error caused by uneven intensity spatial distribution and improving the spectral resolution.

[0018] Further features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the invention and, together with the description, serve to explain the principles of the invention.

[0020] Figure 1a is a structural diagram of a spectral chip according to an embodiment of the present invention;

[0021] Figure 1b is a packaging structure diagram of a spectral chip according to an embodiment of the present invention;

[0022] Figure 1c is a structural diagram of a spectral chip according to an embodiment of the present invention;

[0023] Figure 2a-2q is a schematic diagram of the layout of the first area and the second area according to an embodiment of the present invention;

[0024] Figure 3a-3i is a schematic diagram of the layout of the first area and the second area according to an embodiment of the present invention;

[0025] Figure 4 is a structural block diagram of a spectroscopy device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0027] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0028] In addition, in order to better illustrate the present invention, numerous specific details are provided in the following specific embodiments. It should be understood by those skilled in the art that the present invention can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present invention.

[0029] Figure 1a The structure diagram of the spectral chip according to one embodiment of the present invention is shown. Figure 1b FIG. 2 shows a packaging structure diagram of a spectral chip according to an embodiment of the present invention. Figure 1a As shown, the spectral chip (also called spectral sensor) 100 may include:

[0030] A quantum dot film (also called a filter film) 110, which is divided into a first area and a second area, the first area is provided with quantum dots and the second area is an area where quantum dots are not provided or an area where quantum dots with a concentration lower than that of the quantum dots provided in the first area are provided, and light from an incident light source (e.g., a light source entering a spectrum chip) irradiates the first area and the second area; and

[0031] The chip target surface 130, the quantum dot film 110 is attached to the chip target surface 130, the chip target surface 130 is used to receive the light transmitted from the first area and output a first signal as the intensity of the light transmitted from the first area, and receive the light transmitted from the second area and output a second signal as the intensity of the light transmitted from the second area, the detection result of the spectral chip 100 is based on the first signal and the second signal,

[0032] The layout of the first area and the second area is determined according to information related to the spatial distribution of the intensity of the incident light source and / or the spectral resolution to be achieved by the spectral chip.

[0033] In this embodiment, the quantum dot film 110 can be attached to the chip target surface 130 in the following manner: the quantum dot film 110 is arranged on (not shown in Figure 1aThe quantum dot film 110 is transferred to the chip target surface 130 by a transfer film; the quantum dot film 110 is transferred to the chip target surface 130; and the transfer film is removed. In a possible implementation, the quantum dot film 110 can be transferred to the chip target surface 130 by an adhesive. The transfer film can be made of various thin film materials with low surface energy, such as fluorinated film, silicone film, release film, PE, PP, etc.

[0034] It should be understood that encapsulation can also be achieved by coating the exposed surface of the quantum dot film 110 with a packaging material, filling it with an inert gas, and bonding a material with good light transmittance such as protective glass, PS, PMMA, PC, etc. to the chip bracket (sensor base bracket), and the following can be obtained: Figure 1b The packaging structure of the spectral chip is shown.

[0035] like Figure 1a and 1b As shown, the quantum dot film 110 is directly attached to the chip target surface 130. Therefore, compared with the filter in which the quantum dot film 110 is disposed on the substrate, the spectral chip of the present invention does not include a substrate. By using a spectral chip that does not include a substrate, at least the following effects can be achieved: it is easy to store and the cost of forming inventory is low; the area and pattern of the quantum dot film (the layout of the first area and the second area) can be free from the limitation of the substrate size; there is no need to consider the inconvenience caused by the substrate during processing; very thin filter films can be made, for example, the size of the quantum dot film can be within 50μm, so that a smaller spectral chip can be made. Generally, the size of the spectral chip including the substrate is at least greater than 100μm, and generally greater than 300μm. Therefore, compared with the filter in which the quantum dot film 110 is disposed on the substrate, the size of the spectral chip of the present invention is smaller.

[0036] The present invention recognizes that in practical scenarios, the spatial distribution of the intensity of the light source entering the spectral chip may be uneven, which will cause the intensity of the incident light distributed at different positions to be different, resulting in a certain deviation between the detection result based on the intensity of light transmitted from all quantum dots and the actual result, that is, a measurement error, thereby reducing the spectral reconstruction rate.

[0037] The present invention notes that when incident light is transmitted to the quantum dot film, the intensity of light passing through the first area is changed. Since different quantum dots have different effects on changing the intensity of light, and the same quantum dot has different effects on changing the intensity of light of different spectra, when the spatial distribution of the intensity of light transmitted to the quantum dot film is uneven, the intensity signal of the first area detected by the chip target surface cannot reflect the unevenness of the spatial distribution of the intensity of the light.

[0038] In addition, by evenly arranging the second area, for example, making different first areas evenly arranged, and the gaps between the first areas also evenly arranged, then the light transmitted to different spatial areas of the quantum dot film will be irradiated on the second area as long as it does not irradiate on the quantum dots. Furthermore, the effect of the second area on the change in light intensity is very uniform. Then, to a certain extent, depending on the uniformity of the dispersion of the second area, the intensity signal of the light passing through the second area detected by the chip target surface directly corresponds to the spatial distribution of the intensity of the light transmitted to the quantum dot film. In other words, the data that can reflect the spatial distribution of the intensity of the light is directly detected, and the data on the change in the intensity of the light by the quantum dots is also detected synchronously. Using the data of the spatial distribution of the intensity of the light, through a certain difference algorithm, the error caused by the uneven spatial distribution of the intensity of the light can be corrected, thereby improving the accuracy of the spectral chip / spectral device.

[0039] Based on this, in addition to arranging the first area with quantum dots at the corresponding position of the quantum dot film 110, the present invention also arranges the corresponding second area at other positions of the quantum dot film 110. Therefore, the chip target surface 130 can detect the intensity of light transmitted from the first area distributed at the corresponding position of the quantum dot film 110 and output a first signal corresponding to the intensity. The chip target surface 130 can also detect the intensity of light transmitted from the second area distributed at other corresponding positions of the quantum dot film 110 and output a second signal corresponding to the intensity. The second signal can be used to correct the spatial distribution of intensity to eliminate the measurement error caused by the uneven spatial distribution of intensity.

[0040] Since the purpose of arranging the first area of ​​the quantum dot film 110 is to perform spectral measurement based on the intensity of light transmitted from the quantum dots arranged in the first area, and the purpose of arranging the second area of ​​the quantum dot film 110 is to eliminate the spectral measurement error caused by the uneven spatial distribution of intensity, how to arrange the first area and the second area may depend on the information related to the spatial distribution of intensity and / or the resolution required for spectral detection. In other words, the layout of the first area and the second area can be determined according to the information related to the spatial distribution of intensity and / or the spectral resolution.

[0041] In one possible implementation, the information related to the spatial distribution of intensity includes but is not limited to at least one of the intensity spatial distribution data of the incident light source, information related to the intensity spatial distribution data, uniformity data of the intensity spatial distribution of the incident light source, information related to the uniformity data, and information characterizing whether the intensity spatial distribution of the incident light source is uniform.

[0042] In this embodiment, the layout of the first area and the second area corresponding to the intensity spatial distribution data can be determined. For example, when the intensity spatial distribution data is the first distribution data, the first layout method is selected; when the intensity spatial distribution data is the second distribution data, the second layout method is selected, wherein if the intensity spatial distribution represented by the first distribution data is more uniform than the intensity spatial distribution represented by the second distribution data, then the second layout method is denser than the second area arranged in the first layout method.

[0043] In this embodiment, the layout of the first area and the second area corresponding to the uniformity data of the intensity spatial distribution can be determined. For example, when the uniformity data of the intensity spatial distribution is the first uniformity data, the first layout method is selected; when the intensity spatial distribution data is the second uniformity data greater than the first uniformity data, the second layout method is selected, wherein the second area arranged in the first layout method is denser than that in the second layout method.

[0044] In this embodiment, the layout of the first area and the second area can be determined according to whether the intensity spatial distribution is uniform. In the case where the intensity spatial distribution is uniform, the first layout can be adopted, such as the one described below. Figure 2a and 2b In the case where the intensity spatial distribution is uneven, a second layout may be used, such as the one described below. Figure 2c , 2d and the layout shown in 2e.

[0045] In this embodiment, when the intensity spatial distribution is uniform, the layout mode of the first area and the second area can be further determined according to whether the uniformity (uniformity) of the intensity spatial distribution exceeds the uniformity threshold. Exemplarily, compared with the case where the intensity spatial distribution is uniform and the uniformity of the intensity spatial distribution exceeds the uniformity threshold, when the intensity spatial distribution is uniform and the uniformity of the intensity spatial distribution does not exceed the uniformity threshold, a layout mode that can arrange the second area more densely can be adopted. In other words, the higher the uniformity of the intensity spatial distribution, the lower the density of the second area that needs to be arranged. That is, the density of the second area that needs to be arranged decreases as the uniformity of the intensity spatial distribution increases.

[0046] In one possible implementation, the layout of the first region and the second region may include but is not limited to any one or more of the following: the shape, size, quantity, and location of the first region and the second region respectively; the positional relationship, arrangement, and concentration relationship between the first region and the second region; and the type, concentration, and arrangement of quantum dots deployed in the first region.

[0047] For specific examples, see Figure 2i-2q and Figure 3a-3i , among which Figure 2i-2q and Figure 3a-3i In the figure, the shaded blocks / strips represent the first area, and the blank blocks / strips represent the second area.

[0048] In this embodiment, the shape of the first region may include but is not limited to any one or more of the following: rectangle, circle, strip, diamond, polygon, and the shape of the first region included in the same quantum dot film may be the same shape among the aforementioned shapes, or at least one of the aforementioned shapes; accordingly, the shape of the second region may include but is not limited to any one or more of the following: rectangle, circle, strip, diamond, polygon, and the shape of the second region included in the same quantum dot film may be the same shape among the aforementioned shapes, or at least one of the aforementioned shapes. Among them, the shapes of the first region and the second region included in the same quantum dot film may be the same or different.

[0049] In this embodiment, the sizes of the first regions included in the same quantum dot film may be equal or different, and correspondingly, the sizes of the second regions may be equal or different. In addition, the sizes of the first region and the second region included in the same quantum dot film may be equal or different.

[0050] In this embodiment, the arrangement of the first area and the second area includes but is not limited to: the first area is arranged on both sides of the second area according to a predetermined rule; the second area is arranged between, on both sides and / or around the first area according to a predetermined rule; the first area is arranged at the corresponding position of the entire first area according to a predetermined rule and the second area is arranged at the remaining position of the entire first area according to a predetermined rule, for example, the first area is arranged on the left side of the entire first area according to a predetermined rule and the second area is arranged on the right side of the entire first area according to a predetermined rule; the first number of first areas and the second number of first areas are respectively located on both sides of the third number of second areas, and the first areas on both sides are arranged symmetrically; the first number of first areas and the second number of first areas are respectively located on both sides of the third number of second areas, and the first areas on both sides are arranged in a mirror image, etc.

[0051] Since the first area and the second area of ​​the quantum dot film of the spectral chip are determined based on information related to the spatial distribution of the intensity of the incident light source and / or the spectral resolution to be achieved by the spectral chip, compared to the filter in the prior art, the spectral chip of the present invention can automatically select the layout of the first area and the second area that is compatible with the above requirements based on the intensity spatial distribution requirements and / or the spectral resolution requirements, thereby effectively eliminating the detection error caused by the uneven spatial distribution of the intensity and improving the spectral resolution.

[0052] In a possible implementation, the layout of the first area and the second area is determined according to information related to the correction of the spatial distribution of the intensity of the incident light source and / or the size of the chip target surface and the quantum dot film.

[0053] In this embodiment, the layout of the first region and the second region can be determined (or selected) based on information related to the correction of the intensity spatial distribution, such as the correction accuracy and / or the size of the chip target surface and the quantum dot film.

[0054] In one possible implementation, the first areas and the second areas are arranged in a layout manner in which a first number of second areas with corresponding sizes and shapes are arranged at first corresponding positions and a second number of first areas with corresponding sizes and shapes are arranged at second corresponding positions, so that the correction accuracy of the spectral chip manufactured thereby meets the correction threshold under the condition that the sizes of the chip target surface and the quantum dot film are met.

[0055] In this embodiment, the number, shape, size and position of the second region are determined according to the calibration accuracy and the size of the chip target surface and the quantum dot film, and the second region is laid out in a manner that the determined number of second regions with the determined size and shape are set at the determined position. Correspondingly, the number, shape, size and position of the first region are determined according to the calibration accuracy and the size of the chip target surface and the quantum dot film, and the first region is laid out in a manner that the determined number of first regions with the determined size and shape are set at the determined position. For specific examples, see Figure 2g ,in, Figure 2g The dashed blank area in the figure represents the second area, and the shaded area represents the first area.

[0056] Therefore, the number, shape, size and position of the first area and the second area can be arbitrarily selected according to actual needs without being restricted by the original number, shape, size and position of the first area and the second area, thereby realizing a customized spectral chip.

[0057] In one possible implementation, when there is a light spot, a larger number and / or larger size of second areas are set at the edge of the light spot compared to the interior of the light spot; and / or a larger number and / or larger size of second areas are set at the position where the light spots overlap compared to the position where the light spots do not overlap.

[0058] In this embodiment, the layout of the second area can be determined according to the situation of the light spot. For example, the layout of the second area corresponding to each light spot is determined for each light spot. When there are multiple light spots, more second areas are set at the edge of each light spot, more second areas are set at the position where the light spots overlap, and fewer second areas are set in other areas. For specific examples, see Figure 2h ,like Figure 2h As shown, there are two light spots, light spot 1 and light spot 2, and there is an overlapping area between light spot 1 and light spot 2. As many second areas as possible are set in the overlapping area, and as many second areas as possible are set at the edges of the non-overlapping areas between light spot 1 and light spot 2.

[0059] In this way, the area of ​​the chip target can be utilized to the maximum extent, thereby improving the utilization rate of the spectral chip; in addition, targeted designs can be made according to different light spot conditions.

[0060] Figure 1c is a structural diagram of a spectral chip according to an embodiment of the present invention. Figure 1c As shown, the spectral chip includes a substrate. In one implementation, the spectral chip including the substrate can be formed in the following manner: a first region and a second region are formed on the substrate, and then the side provided with the first region and the second region is attached to the chip target surface. Among them, it can be achieved by setting a quantum dot film on the substrate, or the first region and the second region can be formed on the substrate by directly setting quantum dots on the substrate. The specific implementation of the spectral chip including the substrate will not be described in detail in the present invention.

[0061] In one possible implementation, when the spatial distribution of the intensity of the incident light source is uniform, if the entire quantum dot film includes multiple rectangular blocks, the first region and the second region are laid out in a layout manner in which the rectangular blocks at corresponding positions are set as the second region and the rectangular blocks at the remaining positions are set as the first region, and the set second regions are uniformly distributed in the multiple rectangular blocks.

[0062] It should be understood that uniform distribution means that the relative standard deviation of the spatial distribution of the irradiation intensity of the entire chip target surface is not greater than 5%. In one implementation, uniform distribution may mean that the relative standard deviation of the spatial distribution of the irradiation intensity of the entire chip target surface is not greater than 3%. In another implementation, uniform distribution may mean that the relative standard deviation of the spatial distribution of the irradiation intensity of the entire chip target surface is not greater than 1%.

[0063] In this embodiment, when the spatial distribution of the intensity of the incident light source is uniform, it is assumed that the entire quantum dot film includes M×N rectangular blocks, and the position of each rectangular block is A. i,j, where i represents the row number and j represents the column number, i=1,2,…M, j=1,2,…N, M and N are both positive integers, then the rectangular blocks at the corresponding positions can be set as the second area and the rectangular blocks at the remaining positions can be set as the first area, and the set second areas are evenly distributed in the M×N rectangular blocks.

[0064] In one possible implementation, M is equal to 5 and N is equal to 7. Figure 2a As shown, the black rectangular block corresponds to the first area, the blank rectangular block corresponds to the second area, and the quantum dot film is divided into 35 rectangular blocks of 5×7, and the corresponding position of the 35 rectangular blocks is A i,j , where i = 1, 2, ... 5, j = 1, 2, ... 7, position A 1,1 , A 1,4 , A 1,7 , A 2,2 , A 2,6 , A 3,1 , A 3,4 , A 3,7 , A 4,2 , A 4,6 , A 5,1 , A 5,4 and A 5,7 The rectangular blocks at the positions are set as the second area, and the remaining positions, i.e., A 1,2 , A 1,3 , A 1,5 , A 1,6 , A 2,1 , A 2,3 , A 2,4 , A 2,5 , A 2,7 , A 3,2 , A 3,3 , A 3,5 , A 3,6 , A 4,1 , A 4,3 , A 4,4 , A 4,5 , A 4,7 , A 5,2 , A 5,3 , A 5,5 and A 5,6 The rectangular blocks at the locations are respectively set as the first areas.

[0065] for Figure 2a The layout shown divides the entire quantum dot film into several adjacent rectangular blocks, selects a certain proportion (number) of rectangular block sets evenly distributed in the entire quantum dot film, and sets each rectangular block in the set as the second area, while each rectangular block outside the set is set as the first area.

[0066] In one possible implementation, M is equal to 7 and N is equal to 7. Figure 2b As shown, the black rectangular block corresponds to the first area, the blank rectangular block corresponds to the second area, and the quantum dot film is divided into 7×7 rectangular blocks, a total of 49, and the corresponding position of the 49 rectangular blocks is A i,j , where i = 1, 2, ... 7, j = 1, 2, ... 7, position A 2,2 , A 2,3 , A 2,5 , A 2,6 , A 3,2 , A 3,3 , A 3,5 , A 3,6 , A 5,2 , A 5,3 , A 5,5 , A 5,6 , A 6,2 , A 6,3 , A 6,5 and A 6,6 The rectangular blocks at the positions are set as the first area, and the remaining positions, i.e., A 1,1 , A 1,2 , A 1,3 , A 1,4 , A 1,5 , A 1,6 , A 1,7 , A 2,1 , A 2,4 , A 2,7 , A 3,1 , A 3,4 , A 3,7 , A 4,1 , A 4,2 , A 4,3 , A 4,4 , A 4,5 , A 4,6 , A 4,7 , A 5,1 , A 5,4 , A 5,7 , A 6,1 , A 6,4 , A 6,7 , A 7,1 , A 7,2 , A 7,3 , A 7,4 , A 7,5 , A 7,6 and A 7,7 The rectangular blocks at the locations are respectively set as the second areas.

[0067] for Figure 2bThe layout shown divides the entire quantum dot thin film into a "field" grid, sets the four rectangular blocks within the "field" grid as the first regions respectively, and sets the rectangular blocks on the lines of the "field" as the second regions respectively.

[0068] Figure 2b The layout shown compared to Figure 2a the layout shown has a higher white space ratio, that is, the ratio of the second region in the entire quantum dot thin film is higher. Correspondingly, the utilization rate of the chip target surface is lower.

[0069] In a possible implementation, when the intensity spatial distribution of the incident light source is uneven, if the entire quantum dot thin film includes multiple rectangular blocks, the first region and the second region are laid out in a layout manner where each rectangular block is set as the first region and the second region is set in the gaps between the rectangular blocks.

[0070] In this embodiment, when the intensity spatial distribution of the incident light source is uneven, assuming that the entire quantum dot thin film includes multiple rectangular blocks, each rectangular block can be set as the first region and the second region can be set in the gaps between the rectangular blocks.

[0071] In a possible implementation, M is equal to 5 and N is equal to 7. As Figure 2c shown, the black rectangular blocks correspond to the first regions, the blank rectangular blocks correspond to the second regions, the quantum dot thin film is divided into 35 rectangular blocks of 5×7, each of the 35 rectangular blocks is set as the first region, and a second region is respectively set at the four sides of the circumscribed rectangle at a corresponding distance from each rectangular block. For Figure 2c the layout shown, there is enough space reserved between the first regions.

[0072] In a possible implementation, M is equal to 5 and N is equal to 7. As Figure 2d shown, the black circular blocks correspond to the first regions, the blank rectangular blocks correspond to the second regions, the quantum dot thin film is divided into 35 circular blocks of 5×7, each of the 35 circular blocks is set as the first region, and a second region is respectively set at the four corners of the circumscribed rectangle at a corresponding distance from each circular block. For Figure 2d the layout shown, there is enough space reserved at the four corners of the first regions.

[0073] In a possible implementation, M is equal to 5 and N is equal to 7. As Figure 2eAs shown, the black rectangular block corresponds to the first area, the blank rectangular block corresponds to the second area, and the quantum dot film is divided into 35 rectangular blocks of 5×7, each of which is set as the first area, and a second area is set at the four sides and four corners of the circumscribed rectangle with a corresponding distance from each rectangular block. Figure 2e In the layout shown, sufficient spaces are reserved between the four corners of the first area and the first area.

[0074] In this embodiment, when the required spectral resolution is lower than a threshold value, assuming that the entire quantum dot film is divided into a plurality of strips, the strips at corresponding positions can be set as first regions and at least one second region can be set at corresponding positions on the four sides of a circumscribed rectangle spaced a corresponding distance from the strip.

[0075] In one possible implementation, M is equal to 2 and N is equal to 9. Figure 2f As shown, the black strip corresponds to the first area, the blank rectangular block corresponds to the second area, the quantum dot film is divided into 2×9, a total of 18 strips, each of the 18 strips is set as the first area, and two second areas are set at the symmetrical positions of the two long sides of the circumscribed rectangle spaced a corresponding distance from each strip, and a second area is set at the position of at least one short side of the circumscribed rectangle. Figure 2f In the layout shown, the first area and the second area are arranged alternately.

[0076] In this embodiment, when the required spectral resolution is lower than a threshold, a strip-type first region is used. The strip-type first region can be arranged at the corresponding position of the quantum dot film according to a predetermined rule, and the second region is arranged at the remaining position of the quantum dot film.

[0077] In one possible implementation, Figure 3a As shown, the shaded strip corresponds to the first area, the blank strip corresponds to the second area, and the quantum dot film includes 15 strips. From left to right, the four adjacent strips from the 1st strip to the 4th strip, the four adjacent strips from the 6th strip to the 9th strip, and the four adjacent strips from the 11th strip to the 14th strip are all set as the first area, and the 5th strip and the 10th strip are set as the second area. In this example, the first area and the second area are both strip-type, and sufficient gaps are reserved between the strip-type first areas. It should be understood that sufficient gaps can also be reserved around the strip-type first area, for example Figure 3b-3g The layout shown.

[0078] In one possible implementation, Figure 3bAs shown, the shaded strip corresponds to the first area, the blank area corresponds to the second area, the six strips included in the quantum dot film are set as the first area, and the remaining area of ​​the quantum dot film is set as the second area. In this example, the first area is a strip type, the strip type first area is located in the left area of ​​the quantum dot film, and the second area is set in the right area of ​​the quantum dot film.

[0079] It should be understood that the above layout is only an example of the present invention. However, the present invention is not limited thereto. Other suitable layouts may be used to arrange the strip-shaped first area and the second area. For example, Figure 3c The stripe-shaped first region shown is located in the right area of ​​the quantum dot film and the second region is set in the left area of ​​the quantum dot film, the stripe-shaped first region is located in the upper area of ​​the quantum dot film and the second region is set in the lower area of ​​the quantum dot film, the stripe-shaped first region is located in the lower area of ​​the quantum dot film and the second region is set in the upper area of ​​the quantum dot film, and Figure 3d-3g The layout shown, etc.

[0080] In this embodiment, the first region can be arranged with at least one type of quantum dots having at least one concentration, and / or the first region has at least one size. In other words, the types of quantum dots arranged in each first region can be the same as each other, different from each other, or the types of quantum dots arranged in at least two parts of the first region are different from each other, but the types of quantum dots arranged in all the first regions included in the same part are the same; similarly, the concentrations of quantum dots arranged in each first region can be the same as each other, different from each other, or the concentrations of quantum dots arranged in at least two parts of the first region are different from each other, but the concentrations of quantum dots arranged in all the first regions included in the same part are the same; similarly, the size (i.e., size) of each first region can be the same as each other, different from each other, or the sizes of quantum dots arranged in at least two parts of the first region are different from each other, but the sizes of quantum dots arranged in all the first regions included in the same part are the same.

[0081] In a possible implementation, the types of quantum dots arranged in each first region are the same, for example Figure 3a-3c and the layout shown in 3f; or, the types of quantum dots arranged in each first region are different from each other, for example Figure 3g Alternatively, the types of quantum dots arranged in some first regions are the same, but the types of quantum dots arranged in the remaining first regions are different from each other, for example Figure 3d-3e The layout shown.

[0082] In one possible implementation, the concentration of quantum dots arranged in each first region is the same; or, the concentration of quantum dots arranged in each first region is different from each other; or, the concentration of quantum dots arranged in some first regions is the same, but the concentration of quantum dots arranged in the remaining first regions is different from each other.

[0083] In a possible implementation, the sizes of the first regions are the same, for example Figure 3a-3h The layout shown; or, the sizes of the first regions are different from each other; or, the sizes of some first regions are the same, but the sizes of the remaining first regions are different from each other, for example Figure 3i The layout shown.

[0084] In one possible implementation, it is very difficult to make pixel-level uniform quantum dot thin film blocks in terms of process, and the process takes longer. Therefore, in some application scenarios that do not require too high spectral resolution, such as application scenarios where the spectral resolution is lower than the threshold, a strip-shaped first region with easier processing technology can be used. For the strip-shaped first region, for example, Figure 2f , 2q Of course, it is also possible to use a strip-shaped first region only for part of the first region on the same quantum dot film, for example Figure 2m and 3i The layout shown.

[0085] In one possible implementation, considering that the same object is imaged differently under different wavelengths of quantum dot strips, this will affect the image stitching using different quantum dot strips. Through one push scan, a quantum dot strip cannot scan both sides of a three-dimensional object (both sides along the push scan direction), so for three-dimensional objects, spectral information will be missing. To this end, the present invention uses the second area and uses different strip arrangement methods to solve the problem of missing spectra of three-dimensional objects. For examples of strip arrangement methods, see Figure 3a-3g The layout shown.

[0086] Through the second area, the stitching algorithm is made more robust; by using the same quantum dot strips on both sides of the chip target surface, the problem of missing and incomplete spectral information of the above-mentioned three-dimensional object can be solved.

[0087] It should be understood that the second area and the first area can be combined arbitrarily, and the present invention can also adopt other layout methods. Due to space limitations, the present invention will not be elaborated in detail.

[0088] Figure 4 FIG. 2 shows a block diagram of a spectroscopy device according to an embodiment of the present invention. Figure 4As shown, the spectral device 400 may include a spectral chip 100 and a correction unit 410, wherein the description of the spectral chip 100 can be found in the above specific description and will not be repeated here. The correction unit 410 is used to correct the first signal using the second signal to eliminate the detection error caused by the uneven spatial distribution of the intensity and / or meet the requirements of spectral resolution.

[0089] In this embodiment, when the intensity spatial distribution of the light source is uniform, a global correction can be used to correct the intensity spatial distribution. The global correction uses all the second regions to fit a global Gaussian spot shape distribution, thereby obtaining the intensity spatial distribution of the incident light at all channels. For example, Figure 2a-2b The layout shown is suitable for global correction.

[0090] When the spatial distribution of the intensity of the light source is uneven, global correction can no longer achieve the desired effect. In this case, local correction should be used to correct the spatial distribution of the intensity. Local correction uses the distribution of the second area near a channel to interpolate the spatial distribution of the intensity at the channel.

[0091] In a possible implementation, when the spatial distribution of the intensity of the light from the light source is approximately uniform near each first area, a number of second areas less than a predetermined value may be set near each first area to perform local correction, for example Figure 2c-2d In the layout shown, four second areas are arranged near each first area for local correction.

[0092] In a possible implementation, when the spatial distribution of the intensity of the light source is extremely uneven, even in a first area, it is still not very uniform, it is necessary to set a number of second areas greater than a predetermined value near (around) each first area to perform high-order correction, for example Figure 2e In the layout shown, eight second regions are arranged near each first region to correct the spatial distribution of intensity.

[0093] For global correction, the spectral reconstruction algorithm used for correction is consistent regardless of whether the distribution of the second region is uniform. For local correction, the correction effect decreases as the density of the second region decreases.

[0094] In a possible implementation, the correction unit 410 determines a correction coefficient to be used to correct the first signal according to the coordinates and the grayscale value of the second area.

[0095] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein are selected to best explain the principles of the embodiments, practical applications, or technical improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A spectral chip, It is characterized in that include: A quantum dot film, which is divided into a first region and a second region, wherein the first region is provided with quantum dots and the second region is a region where quantum dots are not provided or a region where quantum dots with a concentration lower than that of the quantum dots provided in the first region are provided, and light from an incident light source irradiates the first region and the second region; as well as A chip target surface, the quantum dot film is attached to the chip target surface, the chip target surface is used to receive the light transmitted from the first area and output a first signal as the intensity of the light transmitted from the first area, and receive the light transmitted from the second area and output a second signal as the intensity of the light transmitted from the second area, the detection result of the spectral chip is based on the first signal and the second signal, The layout of the first area and the second area is determined according to information related to the spatial distribution of the intensity of the incident light source and / or the spectral resolution to be achieved by the spectral chip.

2. The spectral chip according to claim 1, It is characterized in that The information related to the intensity spatial distribution of the incident light source includes at least one of the intensity spatial distribution data of the incident light source, information related to the intensity spatial distribution data, uniformity data of the intensity spatial distribution of the incident light source, information related to the uniformity data, and information characterizing whether the intensity spatial distribution of the incident light source is uniform.

3. The spectral chip according to claim 1, It is characterized in that The layout of the first region and the second region includes at least one of the following: the shape, size, quantity, and location of the first region and the second region respectively; the positional relationship and arrangement of the first region and the second region relative to each other; and the type, concentration, and arrangement of the quantum dots deployed in each of the first regions.

4. The spectral chip according to claim 1, It is characterized in that In the case where the spatial distribution of the intensity of the incident light source is uniform, if the entire quantum dot film includes multiple rectangular blocks, the first area and the second area are laid out in a layout manner in which the rectangular blocks at the corresponding positions are set as the second area and the rectangular blocks at the remaining positions are set as the first area, and the set second areas are uniformly distributed in the multiple rectangular blocks.

5. The spectral chip according to claim 1, It is characterized in that In the case where the spatial distribution of the intensity of the incident light source is uneven, if the entire quantum dot film includes multiple rectangular blocks, the first area and the second area are laid out in a layout manner in which each rectangular block is set as the first area and the second area is set in the gap between the rectangular blocks.

6. The spectral chip according to claim 5, It is characterized in that Setting the second area in the gap between the rectangular blocks includes: At least one second area is respectively set at the four sides of the circumscribed rectangle spaced correspondingly from each rectangular block; or At least one second area is respectively set at the four corners of a circumscribed rectangle spaced a corresponding distance from each rectangular block; or At least one second area is respectively set at the four sides and four corners of the circumscribed rectangle spaced apart from each rectangular block by a corresponding distance.

7. The spectral chip according to claim 1, It is characterized in that When the spatial distribution of the intensity of the incident light source is uniform, the first area and the second area are arranged in a layout manner in which at least one second area is arranged around a portion of the first area and no second area is arranged around the remaining first area.

8. The spectral chip according to claim 1, It is characterized in that In the case where the spatial distribution of the intensity of the incident light source is uneven, the first regions and the second regions are arranged in a layout manner in which at least one second region is arranged around each first region.

9. The spectral chip according to any one of claims 1 to 8, It is characterized in that The layout of the first area and the second area is determined according to information related to the correction of the spatial intensity distribution of the incident light source and / or the size of the chip target surface and the quantum dot film.

10. The spectral chip according to claim 9, It is characterized in that The first area and the second area are arranged in a layout manner in which a first number of second areas with corresponding sizes and shapes are arranged at first corresponding positions and a second number of first areas with corresponding sizes and shapes are arranged at second corresponding positions, so that the correction accuracy of the spectral chip manufactured thereby meets the correction threshold under the condition that the sizes of the chip target surface and the quantum dot film are met.

11. The spectral chip according to any one of claims 1 to 8, It is characterized in that In the presence of light spots, Compared with the interior of the light spot, a larger number and / or larger size of second regions are arranged at the edge of the light spot; and / or Compared with the positions where the light spots do not overlap, a larger number and / or larger size of second regions are arranged at the positions where the light spots overlap.

12. A spectroscopy device, It is characterized in that include: The spectral chip according to any one of claims 1 to 11; A correction unit is used to correct the first signal using the second signal to eliminate the detection error caused by the uneven spatial distribution of the intensity and / or meet the requirement of spectral resolution.

13. The spectral device according to claim 12, It is characterized in that The correction unit determines a correction coefficient to be used to correct the first signal according to the coordinates and the grayscale value of the second area.

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