Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A window assembly installed on the vehicle lidar

A vehicle-mounted lidar and window technology, which is applied to vehicle components, transportation and packaging, transparent/reflective heating devices, etc. Avoid problems such as frost or fogging, and achieve high transmittance, increased cost, and high heating power density

Active Publication Date: 2021-10-22
NINGBO YONGXIN OPTICS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although improved impact resistance, high cost hinders high-volume applications
[0004] In addition, in the low-temperature and high-humidity environment of cold weather and humid weather, the surface of the optical window of the lidar is also prone to icing, frosting or fogging, which greatly reduces the transmittance of the optical window of the lidar, scattering and interfering with the signal Increase, resulting in shortened detection distance, serious cause system failure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A window assembly installed on the vehicle lidar
  • A window assembly installed on the vehicle lidar
  • A window assembly installed on the vehicle lidar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment one: if figure 1 As shown, a window assembly installed on a vehicle-mounted laser radar includes an outer sapphire substrate 4 and an inner H-K9L optical glass substrate 6, and a PVB polymer is arranged between the sapphire substrate 4 and the H-K9L optical glass substrate 6 The interlayer 5, the sapphire substrate 4 and the optical glass substrate 6 are bonded through the PVB polymer interlayer 5 to form a window assembly.

[0035] Specific to the sapphire substrate 4, the outer surface of the sapphire substrate 4 is coated with a waterproof anti-reflection film 1, which is used to reduce the reflection of visible light and at the same time to increase the reflection of the radar band (the radar working band is 905nm±30nm or 1550nm±30nm), and the spectral characteristics like figure 2 and image 3 As shown; the inner surface of the sapphire substrate 4 is coated with a black film 2. The function of this film is to ensure the consistency of the appearance ...

Embodiment 2

[0044] Embodiment 2: Other structures are the same as Embodiment 1, the difference is that the heating defogging structure 7 is as Figure 11 As shown, the outer surface of the H-K9L optical glass substrate 6 is plated with an ITO conductive film 10, and on the ITO conductive film 10, the heating electrode strip 8 made of thick film paste and the electrode connected to the heating electrode strip 8 are coated. The terminal conductor 9 is a terminal conductor 9 used for connecting control systems such as an external power supply. The heating and defogging structure of this embodiment has a more uniform heating effect, but the overall transmittance is slightly lower than that of the heating and defogging structure of Embodiment 1, and the cost is somewhat increased.

[0045] Specifically, the heating electrode 8 in the above two embodiments is coated with thick film slurry, the width is 1mm~5mm, the total resistance is controlled at 10~200 ohms, the resistance range can also be in...

Embodiment 3

[0048] Embodiment three: other structures are the same as embodiment two, the difference is that the thickness of the sapphire substrate 4 is 0.5mm, the thickness of the H-K9L optical glass substrate 6 is 5.14mm, and the thickness of the polymer interlayer is 0.36mm. The total thickness of the window assembly is equal to 6 mm, and the cost per piece of the window assembly is 200 yuan.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a window assembly installed on a vehicle-mounted laser radar, which comprises an outer sapphire substrate and an inner optical glass substrate, and a polyvinyl butyral resin or ethylene-acetic acid is arranged between the sapphire substrate and the optical glass substrate. The polymer interlayer made of ethylene copolymer, the sapphire substrate and the optical glass substrate are bonded through the polymer interlayer to form a window assembly. The thickness of the sapphire substrate is 0.5mm~1.5mm, and the thickness of the optical glass substrate is greater than 2mm. The thickness of the molecular interlayer is 0.36mm~0.40mm, and the total thickness of the window assembly is less than or equal to 6mm. The advantage is that the window assembly is formed by bonding two substrates of specific materials through a specific polymer interlayer. The elasticity of the sandwich layer absorbs impact, which not only can effectively prevent the penetration of impact objects, but also greatly reduces the cost of the device.

Description

technical field [0001] The invention relates to a vehicle laser radar, in particular to a window assembly installed on the vehicle laser radar. Background technique [0002] Lidar is a new type of sensor, which is a general term for laser active detection sensor equipment. Its main working principle is to realize three-dimensional scanning measurement and imaging of the target outline through high-frequency ranging and scanning angle measurement. Compared with common auxiliary driving sensors such as cameras and millimeter-wave radars, lidar has powerful spatial three-dimensional resolution capabilities. [0003] The ideal installation position of the vehicle-mounted lidar on the car is generally behind the air intake grille of the front of the car. Therefore, the optical window of the lidar may be impacted by various hard objects such as gravel splashed on the road when the vehicle is running. Fragmentation may cause the lidar to fail and affect driving safety. Therefore,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/481B60R11/02H05B3/84
CPCB60R11/0258G01S7/481H05B3/84
Inventor 张克奇邱慧毛磊杨勇姬凌马浩斌孙国峰
Owner NINGBO YONGXIN OPTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com