Optical polarization vehicle-mounted module

Abstract

The utility model discloses an optical polarization vehicle-mounted module which is characterized in that the optical polarization vehicle-mounted module comprises a shell, a lens, a polarization grating, a substrate assembly and an optical sensor, the lens, the polarization grating and the substrate assembly are sequentially installed on the shell in the direction from the outer portion of the shell to the inner portion of the shell, and the optical sensor for receiving the lens is arranged on the substrate assembly; the polarization grating is composed of a plurality of polarization units, and each polarization unit is composed of four polarizers of which the polarization angles of four pixels are 45 degrees, 90 degrees, 135 degrees and no polarization angle. The utility model has the advantages that through the arrangement of the polarization grating, the influence of stray light or light reflection caused by severe light source conditions on image recognition is avoided, and the image recognition capability is improved; moreover, the grating without the polarization angle is additionally arranged on the polarization unit, more original information is reserved, meanwhile, due to the arrangement of the grating without the polarization angle, the processing and manufacturing cost of the polarization grating is reduced, and the number of pixels needing to be processed in the later period is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle module technology, specifically to an optical polarization vehicle module. Background Technology

[0002] An in-vehicle imaging module is a precision instrument used to convert light signals into electrical signals. The optical image of the scene generated by the optical lens is projected onto the surface of the image sensor, and then converted into an electrical signal by the image sensor. After being converted into a digital image signal by an analog-to-digital converter, it is sent to the digital signal processing chip for processing into RGB image data. Then, it is transmitted to the CPU for processing through the IO interface, and the image can be viewed on the display screen.

[0003] Currently, under strong light sources or reflective conditions, the vehicle module will generate stray light due to the poor lighting environment, which will affect image recognition. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to improve the image recognition capability of vehicle-mounted modules.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] An optical polarization vehicle module includes a housing, a lens, a polarizing grid, a substrate assembly, and an optical sensor. The lens, the polarizing grid, and the substrate assembly are sequentially mounted on the housing from the outside to the inside of the housing. The substrate assembly is provided with an optical sensor that receives signals from the lens.

[0007] The polarization grid is composed of multiple polarization units, each of which consists of a polarizer with four pixels having polarization angles of 45°, 90°, 135° and no polarization angle, respectively.

[0008] By setting up polarization grids, images can still be clearly identified even under strong light sources or reflective conditions, avoiding stray light or reflections that may affect image recognition due to poor lighting conditions, thus improving image recognition capabilities. Furthermore, the addition of grids without polarization angles on the polarization unit preserves more original information. At the same time, the setting of grids without polarization angles reduces the manufacturing cost of polarization grids and reduces the number of pixels that need to be processed later.

[0009] Preferably, the housing includes a front housing and a rear housing, the lens is mounted at one end of the front housing, and the polarizing grid, substrate assembly and rear housing are sequentially mounted at the end of the front housing away from the lens.

[0010] Preferably, the front and rear housings are made of die-cast metal.

[0011] Preferably, the substrate assembly is fixed to the inner wall of the front housing by screws.

[0012] Preferably, the inner wall of the front housing at the end away from the lens is provided with a recess, and the polarizing grid is fixed on the recess.

[0013] Preferably, the polarizing grid is fixed to the recessed platform by dispensing adhesive.

[0014] Preferably, the substrate assembly is a PCB board.

[0015] Preferably, the optical sensor is a complementary metal-oxide-semiconductor image sensor.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By setting up polarization grids, images can still be clearly identified even under strong light sources or reflective conditions, avoiding stray light or reflections that may affect image recognition due to poor lighting conditions, thus improving image recognition capabilities. Furthermore, the addition of grids without polarization angles on the polarization unit preserves more original information. At the same time, the setting of grids without polarization angles reduces the manufacturing cost of polarization grids and reduces the number of pixels that need to be processed later. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the polarization grid in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the polarization unit in an embodiment of the present invention. Detailed Implementation

[0021] To facilitate understanding of the technical solution of this utility model by those skilled in the art, the technical solution of this utility model will now be further described in conjunction with the accompanying drawings.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0024] See Figure 1 and Figure 2 This embodiment discloses an optical polarization vehicle module, including a housing 1, a lens 2, a polarizing grid 3, a substrate assembly 4, and an optical sensor 5. The lens 2, the polarizing grid 3, and the substrate assembly 4 are sequentially mounted on the housing 1 from the outside to the inside of the housing 1. The optical sensor 5, which receives signals from the lens 2, is disposed on the substrate assembly 4. The optical sensor 5 is a complementary metal oxide semiconductor image sensor.

[0025] The housing 1 includes a front housing 11 and a rear housing 12. The lens 2 is mounted on one end of the front housing 11. The polarizing grid 3, the substrate assembly 4 and the rear housing 12 are sequentially mounted on the end of the front housing 11 away from the lens 2. In this embodiment, the front housing 11 and the rear housing 12 are made of die-cast metal and are used to protect the internal components.

[0026] Furthermore, the inner wall of the front housing 11 away from the lens 2 is provided with a recess, the polarizing grid 3 is fixed to the recess by dispensing adhesive, and the substrate assembly 4 is fixed to the inner wall of the front housing 11 by screws. In this embodiment, the substrate assembly 4 is a PCB board.

[0027] The polarization grid 3 is composed of multiple polarization units 31, and each polarization unit 31 is composed of polarizers with polarization angles of 45°, 90°, 135° and no polarization angle of four pixels.

[0028] By adding polarizing grid 3, previously indistinguishable areas (water surface, aquatic plants) can now be detected. It can be seen that with the addition of polarizing grid 3, images can still be clearly identified even under strong light or reflective conditions, avoiding the impact of stray light or reflections on image recognition due to poor lighting conditions, thus improving image recognition capabilities. Furthermore, the addition of a grid without polarization angle on the polarizing unit 31 preserves more original information. At the same time, the manufacturing cost of polarizing grid 3 is reduced, and the number of pixels requiring post-processing is also decreased.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] The above-described embodiments are merely examples of implementation methods of the utility model. The scope of protection of this utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model.

Claims

1. An optical polarization vehicle-mounted module, characterized in that: The device includes a housing, a lens, a polarizing grid, a substrate assembly, and an optical sensor. The lens, polarizing grid, and substrate assembly are sequentially mounted on the housing from the outside to the inside of the housing. The substrate assembly is equipped with an optical sensor that receives signals from the lens. The polarization grid is composed of multiple polarization units, each of which consists of a polarizer with four pixels having polarization angles of 45°, 90°, 135° and no polarization angle, respectively.

2. The optical polarization vehicle-mounted module according to claim 1, characterized in that: The housing includes a front housing and a rear housing. The lens is mounted at one end of the front housing, and a polarizing grid, a substrate assembly, and a rear housing are sequentially mounted at the end of the front housing away from the lens.

3. The optical polarization vehicle-mounted module according to claim 2, characterized in that: The front and rear housings are made of die-cast metal.

4. An optical polarization vehicle-mounted module according to claim 2, characterized in that: The substrate assembly is fixed to the inner wall of the front housing by screws.

5. An optical polarization vehicle-mounted module according to claim 2, characterized in that: The inner wall of the front housing away from the lens has a recessed platform, and the polarizing grid is fixed on the recessed platform.

6. An optical polarization vehicle-mounted module according to claim 5, characterized in that: The polarizing grid is fixed to the recessed platform by dispensing adhesive.

7. An optical polarization vehicle-mounted module according to claim 1, characterized in that: The substrate assembly is a PCB board.

8. An optical polarization vehicle-mounted module according to claim 1, characterized in that: The optical sensor is a complementary metal oxide semiconductor image sensor.

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