CN115032649A - Optical sensor assembly, automobile and design method of optical sensor assembly - Google Patents

Optical sensor assembly, automobile and design method of optical sensor assembly Download PDF

Info

Publication number
CN115032649A
CN115032649A CN202110240499.3A CN202110240499A CN115032649A CN 115032649 A CN115032649 A CN 115032649A CN 202110240499 A CN202110240499 A CN 202110240499A CN 115032649 A CN115032649 A CN 115032649A
Authority
CN
China
Prior art keywords
optical sensor
windshield
film layer
laser beam
sensor assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110240499.3A
Other languages
Chinese (zh)
Inventor
郭栓银
施展
封飞飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vertilite Co Ltd
Original Assignee
Vertilite Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vertilite Co Ltd filed Critical Vertilite Co Ltd
Priority to CN202110240499.3A priority Critical patent/CN115032649A/en
Publication of CN115032649A publication Critical patent/CN115032649A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
    • G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The embodiment of the invention provides an optical sensor assembly, an automobile and a design method of the optical sensor assembly, wherein the optical sensor assembly provided by the embodiment of the invention comprises at least one optical sensor and a windshield, and all the optical sensors are positioned on the same side of the windshield; the laser beam projected to the windshield by the optical sensor is P polarized light, wherein the P polarized light is linearly polarized light with a vibration direction in an incidence plane when the P polarized light is incident to the windshield. The embodiment of the invention provides an optical sensor assembly, an automobile and a design method of the optical sensor assembly, which aim to increase the transmittance of a windshield to laser beams emitted by an optical sensor.

Description

Optical sensor assembly, automobile and design method of optical sensor assembly
Technical Field
The present invention relates to optical sensor technologies, and in particular, to an optical sensor module, an automobile, and a method for designing an optical sensor module.
Background
In order to meet the requirement of Advanced Driving Assistance System (ADAS), various sensors are usually equipped on the automobile, such as cameras, ultrasonic sensors, millimeter wave radar, etc., some of which may be near infrared cameras with a wavelength of 940 nm; similarly, in order to meet the requirement of automatic driving, each automatic driving automobile is also equipped with a laser radar, and the laser wavelength of the commonly used laser radar is about 905 nm. The current lidar and partial near infrared cameras are installed outside the automobile, which requires that they can resist strong wind, salt spray, ultraviolet aging, and adapt to cold and hot environments, etc., so as to ensure normal operation in severe environments, thereby greatly increasing installation and maintenance costs.
In order to reduce the installation and maintenance costs of the lidar and the partial near-infrared camera, it is conceivable to install them in the interior of the vehicle, for example on the inside of the windshield in front of the vehicle, the laser of the lidar or the near-infrared light of the near-infrared camera working through the windshield. The laser radar is placed in the windshield, so that the laser radar has the advantages of wider visual field, better working environment, higher reliability and the like. However, at the same time, the windshield reflects light to reduce transmittance, and stray light is generated.
Disclosure of Invention
The embodiment of the invention provides an optical sensor assembly, an automobile and a design method of the optical sensor assembly, which aim to increase the transmittance of a windshield to laser beams emitted by an optical sensor.
In a first aspect, embodiments of the present invention provide an optical sensor assembly comprising at least one optical sensor and a windscreen, all the optical sensors being located on the same side of the windscreen;
the laser beam projected to the windshield by the optical sensor is P polarized light, wherein the P polarized light is linearly polarized light with a vibration direction in an incidence plane when the P polarized light is incident to the windshield.
Optionally, the refractive index of the windshield is n, and the incident angle of the laser beam projected to the windshield is θ 1 And satisfies the following conditions:
Figure BDA0002962032490000021
optionally, the windshield further comprises at least one antireflection film positioned on one side of the windshield, which is close to the optical sensor.
Optionally, in a direction of a main optical axis of the laser beam, a distance between the optical sensor and the windshield is L, and a divergence angle of the laser beam is L
Figure BDA0002962032490000024
The area of the antireflection film is S, and the following requirements are met:
Figure BDA0002962032490000022
wherein the incident angle of the laser beam projected to the windshield is theta 1 ，θ+θ 1 ＝90°。
Optionally, the divergence angle of the laser beam is less than or equal to 30 °.
Optionally, the antireflection film includes a first film layer, a second film layer and a third film layer, the second film layer is located between the first film layer and the third film layer, the third film layer is located between the second film layer and the windshield, the refractive index of the windshield is n, and the refractive index of the first film layer is n 1 The refractive index of the second film layer is n 2 The refractive index of the third film layer is n 3 Satisfies the following conditions:
Figure BDA0002962032490000023
wherein n is 0 Is the refractive index of air.
Optionally, the antireflection film comprises a first film layer and a second film layer, the second film layer being located between the first film layer and the windshield; the refractive index of the windshield is n, and the refractive index of the first film layer is n 1 The refractive index of the second film layer is n 2 And satisfies the following conditions:
n 2 ＞n；
Figure BDA0002962032490000031
wherein n is 0 Is the refractive index of air.
Optionally, the wavelength of the laser beam is greater than or equal to 800nm and less than or equal to 1600 nm.
In a second aspect, an embodiment of the present invention provides an automobile, which includes the optical sensor assembly described in the first aspect, and an optical sensor in the optical sensor assembly is located in a body of the automobile.
In a third aspect, an embodiment of the present invention provides a method for designing an optical sensor assembly based on the first aspect, including:
and controlling the laser beam projected to the windshield by the optical sensor to be P polarized light, wherein the P polarized light is linearly polarized light with the vibration direction in an incident plane when the P polarized light is incident on the windshield.
In the embodiment of the invention, the laser beam emitted by the optical sensor can be linearly polarized light, and the laser beam projected to the windshield is P polarized light by controlling the linearly polarized light to be positioned in the incident plane of the incident windshield, so that the transmittance of the windshield for the laser beam emitted by the optical sensor is increased compared with natural light or S polarized light.
Drawings
Fig. 1 is a schematic structural diagram of an optical sensor assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another optical sensor assembly provided in an embodiment of the present invention;
FIG. 3 is a schematic structural view of an antireflection film and a windshield according to an embodiment of the present invention;
FIG. 4 is a schematic view of another antireflection film and a windshield according to an embodiment of the present invention;
FIG. 5 is a schematic view of a light path of an antireflection film according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of another optical sensor assembly according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an automobile according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of an optical sensor assembly according to an embodiment of the present invention, and referring to fig. 1, the optical sensor assembly includes at least one optical sensor 10 (one optical sensor 10 is taken as an example in fig. 1 for illustration, but not limited thereto) and a windshield 20, where all the optical sensors 10 are located on the same side of the windshield 10. The laser beam projected to the windshield 20 by the optical sensor 10 is P-polarized light. The P-polarized light is linearly polarized light having a vibration direction in the incident plane when entering windshield glass 20.
In the embodiment of the present invention, the laser beam emitted by the optical sensor 10 may be linearly polarized light, and the linearly polarized light is controlled to be located in the incident plane of the incident windshield 20, so that the laser beam projected onto the windshield 20 is P-polarized light, and compared with natural light or S-polarized light, the transmittance of the windshield 20 for the laser beam emitted by the optical sensor 10 is increased.
Alternatively, referring to fig. 1, the refractive index of the windshield 20 is n, and the incident angle of the laser beam projected to the windshield 20 is θ 1 Satisfying formula (1):
Figure BDA0002962032490000041
in the embodiment of the invention, the incident angle θ of the laser beam projected to the windshield 20 1 When the formula (1) is satisfied, the incident angle of the laser beam emitted from the optical sensor 10 projected onto the windshield 20 is brewster's angle,
fig. 2 is a schematic structural diagram of another optical sensor assembly according to an embodiment of the present invention, and referring to fig. 2, the optical sensor assembly further includes at least one antireflection film 30, where the antireflection film 30 is located on a side of the windshield 20 adjacent to the optical sensor 10. In the embodiment of the present invention, an antireflection film 30 is further disposed on a side of the windshield 20 close to the optical sensor 10, before a laser beam emitted by the optical sensor 10 is projected onto the windshield 20, the laser beam is firstly projected onto the antireflection film 30, and the transmittance of the laser beam emitted by the optical sensor 10 is increased by the antireflection film 30, so that the transmittance of the windshield 20 for the laser beam emitted by the optical sensor 10 is increased.
Alternatively, referring to fig. 2, the distance between the optical sensor 10 and the windshield 20 in the direction of the main optical axis of the laser beam is L, and the divergence angle of the laser beam is L
Figure BDA0002962032490000052
The area of the antireflection film 30 is S, and satisfies formula (2):
Figure BDA0002962032490000051
wherein the incident angle of the laser beam projected to the windshield 20 is θ 1 ，θ+θ 1 90 ° is set. θ is the angle of inclination of the windshield 20, i.e., the angle of the windshield 20 from the horizontal direction X. The horizontal direction X is perpendicular to the vertical direction Y.
In the embodiment of the present invention, the incident angle θ of the laser beam projected to the windshield 20 1 When the formula (2) is satisfied, the area of the laser beam emitted by the optical sensor 10 and projected onto the antireflection film 30 is smaller than or equal to the area of the antireflection film 30, so that the laser beam emitted by the optical sensor 10 does not exceed the antireflection film 30, and the transmittance of the windshield 20 to the laser beam emitted by the optical sensor 10 is increased.
Alternatively, referring to fig. 2, the divergence angle of the laser beam is less than or equal to 30 °. That is, the outer edge of the optical sensor 10 emitting the laser beam is angled less than or equal to 30 °. So that the optical sensor 10 emits a laser beam with a small divergence angle. Further, it is also possible to set the divergence angle of the laser beam to 20 ° or less to increase the transmittance of the windshield 20 for the laser beam emitted from the optical sensor 10.
Fig. 3 is a schematic structural view of an antireflection film and a windshield according to an embodiment of the present invention, and referring to fig. 2 and 3, an antireflection film 30 includes a first film layer 31, a second film layer 32, and a third film layer 33, where the second film layer 32 is located between the first film layer 31 and the third film layer 33, and the third film layer 33 is located between the second film layer 32 and the windshield 20. The refractive index of the windshield 20 is n, and the refractive index of the first film layer 31 is n 1 The refractive index of the second film layer 32 is n 2 The refractive index of the third film layer 33 is n 3 The following formula is satisfied:
Figure BDA0002962032490000061
Figure BDA0002962032490000062
Figure BDA0002962032490000063
wherein n is 0 The refractive index of air is usually 1 for simplicity. In the embodiment of the present invention, the antireflection film 30 includes the first film layer 31, the second film layer 32, and the third film layer 33, and the refractive indexes of the first film layer 31, the second film layer 32, and the third film layer 33 and the windshield 20 satisfy the formula (3), the formula (4), and the formula (5), so as to increase the transmittance of the windshield 20 for the laser beam emitted by the optical sensor 10.
For example, referring to fig. 3, first film 31 may include magnesium fluoride (MgF2), second film 32 may include silicon dioxide (SiO2), and third film 33 may include zirconium oxide (ZrO 2).
Fig. 4 is a schematic structural view of an antireflection film and a windshield according to an embodiment of the present invention, and referring to fig. 2 and 4, an antireflection film 30 includes a first film layer 31 and a second film layer 32, and the second film layer 32 is located between the first film layer 31 and the windshield 20. Wind screen glassThe refractive index of the glass 20 is n, and the refractive index of the first film layer 31 is n 1 The refractive index of the second film layer 32 is n 2 The following formula or relation is satisfied:
n 2 ＞n(6)
Figure BDA0002962032490000071
wherein n is 0 Is the refractive index of air. In the embodiment of the invention, the antireflection film 30 includes the first film layer 31 and the second film layer 32, so that the number of film layers in the antireflection film 30 is reduced, and the difficulty in selecting the film layers according with a preset formula or relationship is reduced.
For example, referring to fig. 4, the first film layer 31 may include magnesium fluoride (MgF2), and the refractive index n of the first film layer 31 1 Is 1.38, the refractive index n of the windshield 20 is 1.4, and the refractive index n of the second film layer 32 2 Is 1.9.
Fig. 5 is a schematic view of a light path of an antireflection film according to an embodiment of the present invention, and referring to fig. 4 and fig. 5, when a laser beam emitted by the optical sensor 10 is projected onto the windshield 20, the laser beam is reflected between the windshield 20 and the antireflection film 30, between the plurality of film layers of the antireflection film 30, and at an interface between the antireflection film 30 and air, and the plurality of reflected light beams are canceled by coherence, so that the intensity of the reflected light is reduced, the intensity of the transmitted light is increased, and the transmittance of the windshield 20 is increased.
Fig. 6 is a schematic structural view of another optical sensor assembly according to an embodiment of the present invention, referring to fig. 6, the optical sensor assembly includes a plurality of optical sensors 10, a plurality of antireflection films 30 and a windshield 20, the number of the antireflection films 30 is the same as that of the optical sensors 10, the antireflection films 30 are in one-to-one correspondence with the optical sensors 10, and laser beams emitted by the optical sensors 10 are projected to the antireflection films 30 in one-to-one correspondence with the optical sensors 10, so as to increase the transmittance of the windshield 20 to the laser beams emitted by the optical sensors 10.
Exemplarily, referring to fig. 6, the optical sensor assembly includes two optical sensors 10 and two antireflection films 30, the two optical sensors 10 are respectively a first optical sensor 101 and a second optical sensor 102, the two antireflection films 30 are respectively a first antireflection film 301 and a second antireflection film 302, the first antireflection film 301 corresponds to the first optical sensor 101, a laser beam emitted by the first optical sensor 101 is projected to the first antireflection film 301, the second antireflection film 302 corresponds to the second optical sensor 102, and a laser beam emitted by the second optical sensor 102 is projected to the second antireflection film 302.
Exemplarily, referring to fig. 6, the optical sensor assembly includes a plurality of optical sensors 10, an antireflection film 30, and a windshield 20, the plurality of optical sensors 10 are projected onto the windshield 20 at the same incident angle, and the plurality of optical sensors 10 constitute a detection array, thereby increasing the accuracy of detection.
In other embodiments, the laser beams emitted by the optical sensors 10 are projected onto the same antireflection film 30, so as to reduce the difficulty in designing the antireflection film 30.
Optionally, the wavelength of the laser beam is greater than or equal to 800nm and less than or equal to 16000 nm. It can be understood that when the wavelength of the laser beam changes, the reflectivity and transmittance of the laser beam projected to the windshield 20 change, and in the embodiment of the present invention, the wavelength of the laser beam is set to be greater than or equal to 800nm and less than or equal to 1600nm, so as to increase the transmittance of the windshield 20 for the laser beam emitted by the optical sensor 10.
Preferably, the wavelength of the laser beam may include at least one of 808nm, 850nm, 940nm, 1310nm and 1550nm, so as to adopt the existing mature laser light source as the internal light source of the optical sensor 10, reducing the design requirement of the optical sensor 10.
For example, referring to fig. 1 to 6, the optical sensor 10 may include a laser radar including a transmitting unit that transmits a laser beam to the detection space and a receiving unit that receives a laser echo reflected by an object in the detection space to perform optical detection of the detection space.
Illustratively, referring to fig. 1-6, windshield 20 is an ultra-white glass having a mass percentage of iron ions less than or equal to 0.015% to reduce absorption of the laser beam by windshield 20 and increase the transmittance of windshield 20. Wherein, the light transmittance of the ultra-white glass to the near infrared wave band is more than or equal to 90 percent.
Illustratively, unpolarized light emitted by a light source at 808nm has a transmittance of 27% for normal glass and 72.4% for extra white glass. The transmittance of the P polarized light emitted by a light source with the wavelength of 808nm projected on common glass is 30.2 percent, and the transmittance of the P polarized light projected on ultra-white glass is 86.5 percent. The transmittance of unpolarized light emitted by a 940nm light source projected to common glass is 13.3%, and the transmittance of unpolarized light projected to ultra-white glass is 73.6%. The transmittance of S polarized light emitted by a 940nm light source projected to common glass is 9.3%, and the transmittance projected to ultra-white glass is 60.3%. It can be seen that the laser beam projected onto the windshield 20 is P-polarized light, and the transmittance of the windshield 20 for the laser beam emitted by the optical sensor 10 is increased relative to natural light (unpolarized light) or S-polarized light. The use of ultra-white glass as the windshield 20 increases the transmittance of the laser beam emitted by the optical sensor 10 through the windshield 20, relative to the use of ordinary glass as the windshield 20.
Fig. 7 is a schematic structural diagram of an automobile provided by an embodiment of the present invention, and referring to fig. 1 to 7, the automobile includes the optical sensor assembly in any one of the embodiments, and the optical sensor 10 in the optical sensor assembly is located in a body of the automobile. That is, the optical sensor 10 is located in the vehicle interior, and the optical sensor 10 is located on the side of the windshield 20 facing the vehicle interior. Since the automobile provided by the embodiment of the present invention includes the optical sensor assembly in the above embodiment, the automobile has the beneficial effect of the above optical sensor assembly, that is, the transmittance of the windshield 20 to the laser beam emitted by the optical sensor 10 is increased.
Based on the same technical concept, an embodiment of the present invention further provides a design method of an optical sensor assembly, where the design method includes: the laser beam projected to the windshield 20 by the control optical sensor 10 is P-polarized light, wherein the P-polarized light is linearly polarized light with a vibration direction in an incident plane when the light enters the windshield 20.
According to the design method provided by the embodiment of the invention, based on the optical sensor assembly in the above embodiment, the laser beam emitted by the optical sensor 10 may be linearly polarized light, and the laser beam projected to the windshield 20 is P-polarized light by controlling the linearly polarized light to be located in the incident plane of the windshield 20, so that the transmittance of the windshield 20 for the laser beam emitted by the optical sensor 10 is increased compared with that of natural light or S-polarized light. In other embodiments, the laser beam emitted by the optical sensor 10 may be non-linear polarized light, and the incident angle of the laser beam on the windshield 20 is controlled, so that the laser beam on the windshield 20 is P-polarized light.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. An optical sensor assembly comprising at least one optical sensor and a windshield, all of the optical sensors being located on the same side of the windshield;
the laser beam projected to the windshield by the optical sensor is P polarized light, wherein the P polarized light is linearly polarized light with a vibration direction in an incidence plane when the P polarized light is incident to the windshield.
2. The optical sensor assembly of claim 1, wherein the windshield has an index of refraction n and the laser beam is projected onto the windshield at an angle of incidence θ 1 And satisfies the following conditions:
Figure FDA0002962032480000011
3. the optical sensor assembly of claim 1, further comprising at least one antireflection film on a side of the windshield adjacent the optical sensor.
4. The optical sensor assembly of claim 3, wherein the distance between the optical sensor and the windshield in the direction of the primary optical axis of the laser beam is L, and the divergence angle of the laser beam is L
Figure FDA0002962032480000012
The area of the antireflection film is S, and the following requirements are met:
Figure FDA0002962032480000013
wherein the incident angle of the laser beam projected to the windshield is theta 1 ，θ+θ 1 ＝90°。
5. The optical sensor assembly of claim 4, wherein the divergence angle of the laser beam is less than or equal to 30 °.
6. The optical sensor assembly of claim 3, wherein the antireflection film comprises a first film layer, a second film layer, and a third film layer, the second film layer being between the first film layer and the third film layer, the third film layer being between the second film layer and the windshield, the windshield having a refractive index of n, the first film layer having a refractive index of n 1 The refractive index of the second film layer is n 2 The refractive index of the third film layer is n 3 And satisfies the following conditions:
Figure FDA0002962032480000021
wherein n is 0 Is the refractive index of air.
7. The optical sensor assembly of claim 3, wherein the antireflection film comprises a first film layer and a second film layer, the second film layer being positioned between the first film layer and the windshield; the refractive index of the windshield is n, and the refractive index of the first film layer is n 1 The refractive index of the second film layer is n 2 Satisfies the following conditions:
n 2 ＞n；
Figure FDA0002962032480000022
wherein n is 0 Is the refractive index of air.
8. The optical sensor assembly of claim 1, wherein the laser beam has a wavelength greater than or equal to 800nm and less than or equal to 1600 nm.
9. An automobile comprising an optical sensor assembly according to any one of claims 1 to 8, wherein the optical sensor of the optical sensor assembly is located in the body of the automobile.
10. A method for designing an optical sensor module according to claim 1, comprising:
and controlling a laser beam projected to the windshield by the optical sensor to be P polarized light, wherein the P polarized light is linearly polarized light with a vibration direction in an incident plane when the P polarized light is incident to the windshield.
CN202110240499.3A 2021-03-04 2021-03-04 Optical sensor assembly, automobile and design method of optical sensor assembly Pending CN115032649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110240499.3A CN115032649A (en) 2021-03-04 2021-03-04 Optical sensor assembly, automobile and design method of optical sensor assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110240499.3A CN115032649A (en) 2021-03-04 2021-03-04 Optical sensor assembly, automobile and design method of optical sensor assembly

Publications (1)

Publication Number Publication Date
CN115032649A true CN115032649A (en) 2022-09-09

Family

ID=83117817

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110240499.3A Pending CN115032649A (en) 2021-03-04 2021-03-04 Optical sensor assembly, automobile and design method of optical sensor assembly

Country Status (1)

Country Link
CN (1) CN115032649A (en)

Similar Documents

Publication Publication Date Title
US11592527B2 (en) Systems for incorporating LiDAR sensors in a headlamp module of a vehicle
JP5081953B2 (en) Head-up display device for vehicle
JP5944977B2 (en) Vehicle glazing, method of manufacture and use
US20160150218A1 (en) Combined structure for head up display system and driver monitoring system
US11061227B2 (en) Display device and apparatus
US20200143184A1 (en) Transparent ir reflective coating for driver monitoring system that is applied on or in the windshield of a car
US11487114B2 (en) Display device and head-up display device
JP7473563B2 (en) Automotive LiDAR Assembly with Anti-Reflection Unit
CN110850437A (en) Laser radar
CN112477558A (en) Coating film for windshield
TWM461063U (en) Display apparatus
TWM583818U (en) Assisting system for mobile vehicles
CN115032649A (en) Optical sensor assembly, automobile and design method of optical sensor assembly
KR102664690B1 (en) Head-up displays having asymmetric prism for automobile
US20200142477A1 (en) Ir facetrack system method of integration into automotive heads up display
JP6372305B2 (en) Blind spot assist device
TWM579603U (en) Mobile device auxiliary system
CN220584482U (en) Head-up display system
US11609336B1 (en) Refraction compensation for use in LiDAR systems
TWM585732U (en) Auxiliary system for mobile vehicle
TWM583396U (en) Assisting system for mobile vehicles
JP2976679B2 (en) Inter-vehicle distance detection device
KR20240027796A (en) Front windshield and vehicle
JP2000193589A (en) Raindrop detector
JP3549757B2 (en) Raindrop / condensation detector

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination