Linear array multispectral imaging system and camera applied by same

Abstract

The invention discloses a linear array multispectral imaging system and a camera applying the same, the linear array multispectral imaging system comprises a spectroscope and an imaging sensor, the spectroscope is provided with a light incident plane and n light emergent planes, and n is a positive integer not less than 2; the light incident surface end of the imaging sensor is coated with a film, so that the imaging sensor is an m-waveband imaging sensor, m is a positive integer not less than 2, and m is not greater than 10 in order to ensure that the detection precision m is not greater than 10; at least two groups of imaging sensors are arranged, the number of coating film wave bands of each group of imaging sensors is equal, one group of imaging sensors is opposite to one light emitting end, and spectral imaging of m * n wave bands can be realized through the spectroscope with n light emitting surfaces and the imaging sensors with m wave bands.

Description

Technical Field

[0001] The present invention relates to the technical field of multispectral imaging, and in particular to a linear array multispectral imaging system and a camera used therein. Background Art

[0002] Multispectral technology is a cross-integration of spectroscopy and imaging technology. It can use image information to study the shape, size and distribution of targets, and can also use spectral information to identify and classify substances. This technology was first used in the field of remote sensing, and was later introduced into the fields of medicine, agricultural testing, etc. Similarly, in the grading of agricultural products and grains or the recycling of waste products, multispectral technology can be used to automatically identify grains and waste products with complex shapes online.

[0003] The existing spectral phase sensor coating has a large number of rows. When the spectral camera is used to sort materials on a color sorter, there will be certain problems with layer splicing when the material rolls because the distance between the first and last pixels of the material is far. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention proposes a linear array multi-spectral imaging system and a camera used therein, which can ensure the number of spectra while avoiding the problem of prominent splicing by combining a spectroscope with a few-line coated imaging sensor. For example, a spectroscope that can separate into three groups of bands and a coated imaging sensor with three bands can realize 9-band multi-spectral imaging.

[0005] The present invention provides a linear array multi-spectral imaging system, comprising a spectroscope and an imaging sensor, wherein the spectroscope has a light incident surface and n light exit surfaces, where n is a positive integer not less than 2;

[0006] The light incident surface of the imaging sensor is coated so that the imaging sensor is an m-band imaging sensor, wherein m is a positive integer not less than 2, and in order to ensure the detection accuracy, m is not greater than 10;

[0007] The imaging sensors are provided with at least two groups. Preferably, the number of coating bands of each group of the imaging sensors is equal. One group of the imaging sensors is opposite to one of the light emitting ends. Then, spectral imaging of m*n bands can be achieved through a spectroscope having n light emitting surfaces and an imaging sensor with m bands.

[0008] As a further optimized solution of the present invention, the imaging sensor is a linear array imaging sensor.

[0009] As a further optimized solution of the present invention, n is less than or equal to 5.

[0010] A camera comprises the above-mentioned linear array multi-spectral imaging system.

[0011] In the present invention, the proposed linear array multi-spectral imaging system and the camera used therein can realize spectral imaging of m*n bands through a beam splitter having n light emitting surfaces and an imaging sensor of m bands.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] In the figure: 1. Spectrometer; 2. Imaging sensor. DETAILED DESCRIPTION

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0016] like Figure 1 A linear array multi-spectral imaging system shown includes a beam splitter 1 and an imaging sensor 2, wherein the beam splitter 1 has a light incident surface and n light exit surfaces, where n is a positive integer not less than 2;

[0017] The imaging sensor 2 is a linear array imaging sensor, and the light incident surface of the imaging sensor 2 is coated so that the imaging sensor 2 is an m-band imaging sensor 2, wherein m is a positive integer not less than 2, and in order to ensure the detection accuracy, m is not greater than 10;

[0018] The imaging sensors 2 are provided with at least two groups, and the number of coating bands of the imaging sensors 2 in each group is equal. One group of imaging sensors 2 is opposite to one light emitting end, and thus spectral imaging of m*n bands can be achieved through a spectroscope 1 having n light emitting surfaces and imaging sensors 2 of m bands.

[0019] As a preferred embodiment of the present invention, n is less than or equal to 5, so as to facilitate the processing and manufacturing of the beam splitter 1 .

[0020] A camera comprises the above-mentioned linear array multi-spectral imaging system.

[0021] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A linear array multispectral imaging system, characterized in that: It comprises a beam splitter (1) and an imaging sensor (2), wherein the beam splitter (1) has a light incident surface and n light exit surfaces, where n is a positive integer not less than 2; The light incident surface end of the imaging sensor (2) is coated so that the imaging sensor (2) is an m-band imaging sensor (2), wherein m is a positive integer not less than 2; The imaging sensors (2) are provided with at least two groups, and one group of the imaging sensors (2) is opposite to one of the light emitting ends.

2. The linear array multispectral imaging system according to claim 1, characterized in that: The imaging sensor (2) is a linear array imaging sensor (2).

3. The linear array multispectral imaging system according to claim 1, characterized in that: n is less than or equal to 5.

4. The linear array multispectral imaging system according to claim 1, characterized in that: m is not greater than 10.

5. The linear array multispectral imaging system according to claim 1, characterized in that: The number of coating bands of each group of imaging sensors (2) etc. is equal.

6. A camera, characterized in that: It comprises a linear array multi-spectral imaging system as described in any one of claims 1 to 5.

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