CN216387356U

CN216387356U - Laser radar light shield with ITO membrane

Info

Publication number: CN216387356U
Application number: CN202121980312.5U
Authority: CN
Inventors: 张晓俊; 傅相林; 叶国强; 朱永; 任建全; 马志国; 皇甫乐晓; 童海星; 范久光
Original assignee: Ningbo Xintai Machinery Co Ltd
Current assignee: Ningbo Xintai Machinery Co Ltd
Priority date: 2021-08-12
Filing date: 2021-08-23
Publication date: 2022-04-26
Anticipated expiration: 2031-08-23
Also published as: CN113866745A

Abstract

The utility model belongs to the technical field of laser radar covers, and provides a laser radar cover with an ITO film, which comprises a laser radar cover body, wherein the front side of the laser radar cover body is provided with a front hardening coating, the back side of the laser radar cover body is provided with a back hardening coating, the back side of the back hardening coating is provided with the ITO film, a back light-transmitting AR film layer is arranged behind the ITO film, the ITO film is plated with conductive silver paste, and the conductive silver paste is used as the positive end and the negative end of the ITO film. The utility model has the advantages that the back surface of the laser radar cover body is cold-plated with the ITO film and the anti-reflection light-transmitting AR film layer, the functions of enhancing laser transmission and heating can be realized, the ITO film can be uniformly heated, the influence of stray light is avoided, the scratch resistance, the aging resistance, the fingerprint resistance and the high-angle hydrophobic property are good.

Description

Laser radar light shield with ITO membrane

Technical Field

The utility model belongs to the technical field of laser radar cover products, and relates to a laser radar photomask with an ITO (indium tin oxide) film.

Background

The laser radar has been expected to reach 100 billion dollars by the domestic market demand in 2026, and the radome, which is an indispensable important component of the laser radar and functions to protect the laser radar from the environment, is expected to reach 100 billion dollars as an exterior part of a vehicle, which can suppress attenuation of measurement light of the laser radar unit and improve the degree of freedom of design of the exterior, where it covers the laser radar unit mounted on the vehicle and transmits the measurement light of the laser radar unit, wherein a first region viewed from the transmission direction of the measurement light is a visible light reflection region having a visible light reflection layer that reflects at least a part of visible light from the outside and transmits the measurement light, a second region different from the first region is a high transmittance region in which the transmittance of the measurement light is higher than that of the visible light reflection region, but the heatable radome patent structure that exists at present does not have the heating function, and is relatively poor to cold adverse circumstances adaptability, and ordinary laser radome easily receives ice, snow, fog, the influence of frost under cold environment, and the radome who consequently has the heating function takes place to take place.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem and provides a laser radar mask with an ITO film, which has high laser transmittance and can efficiently heat a laser transmitting area.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a laser radar light shield with ITO membrane, includes laser radar cover body, its characterized in that, the front of laser radar cover body harden the coating before having, harden the coating after having at the back of laser radar cover body, the back harden the coating back ITO membrane has, transparent AR rete after having the ITO membrane, the ITO membrane on plated electrically conductive silver thick liquid, electrically conductive silver thick liquid as the positive and negative both ends of ITO membrane.

In the above laser radar shade with the ITO film, the front part of the front hardened coating has a front light-transmitting AR film layer, and the front part of the front light-transmitting AR film layer has an anti-fingerprint film layer.

In the above laser radar optical cover with ITO film, the front light-transmitting AR film layer and the rear light-transmitting AR film layer are made of SiO₂And TiO₂And a plurality of layers are combined.

In the laser radar photomask with the ITO film, the pre-hardened coating and the hardened coating are acrylic paint or siloxane paint, and the thickness of the coating film layer ranges from 8 to 20 micrometers.

In the above laser radar shade with the ITO film, the ITO film is formed by doping tin indium oxide on a thin film, and the thickness of the ITO film is less than 200 nm.

Compared with the prior art, the laser radar cover has the advantages that the ITO film and the anti-reflection light-transmitting AR film layer are cold-plated on the back surface of the laser radar cover body, the 3D printing or silk screen printing or pad printing conductive silver paste is adopted as the positive electrode and the negative electrode of the ITO film lead, the laser transmission and heating functions can be enhanced, the ITO film can be uniformly heated, the stray light influence is avoided, the light-transmitting AR film layer can improve the laser transmission rate, one or more layers of hardened coatings, anti-fingerprint layers and light-transmitting AR film layers are coated on the front surface of the laser radar cover body, and the laser radar cover has the functions of enhancing the specific red wavelength laser transmission, preventing scraping, resisting aging, preventing fingerprints and realizing high-angle drainage.

Drawings

FIG. 1 is an exploded view of the laser radar mask with an ITO film;

FIG. 2 is a schematic diagram of the structure of the back of the laser radar mask with an ITO film;

FIG. 3 is a schematic diagram of a partial enlarged structure of the laser radar mask with an ITO film;

FIG. 4 is an exploded view of another embodiment of the laser radar mask with an ITO film.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the utility model and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting to the scope of the present invention.

In the figure, a laser radome body 100; a post-hardening coating 200; an ITO film 300; a rear light-transmissive AR film layer 400; conductive silver paste 500; a pre-hardened coating 600; a front light-transmissive AR film layer 700; anti-fingerprint film layer 800.

As shown in fig. 4 and 2, the lidar hood with an ITO film includes a radome body 100, wherein the radome body 100 is made of transparent or opaque PC, PC/PET, PC/ABS, ASA, and PEI as plastic particles, and the radome body 100 is made of plastic material of polycarbonate, and is formed by low pressure injection molding using a precision optical mold. The body is black, but can pass through near-infrared laser to visible light, laser radome body 100's front has preceding sclerosis coating 600, back sclerosis coating 200 has at laser radome body 100's back, in order to realize the heating function, back sclerosis coating 200 back has ITO membrane 300, adopt the PVD technology to plate on laser radome body 100 here and mix tin indium oxide film, the membrane thickness is less than 200nm, generate heat under the circular telegram circumstances, reach the function of laser radome surface defrosting, have back printing opacity AR rete 400 behind ITO membrane 300, AR rete 400 mainly is the stack film system of silicon oxide and titanium oxide, add on the indium tin oxide film through the PVD technology and plate the AR rete, promote the luminousness of radome to laser. The size of the rear light-transmitting AR film layer is smaller than that of the conductive heating film, and areas of silver paste leads are reserved at two ends.

The ITO membrane 300 is plated with electrically conductive silver thick liquid 500, and electrically conductive silver thick liquid 500 is as the positive and negative both ends of ITO membrane 300, as shown in fig. 3, and the electrically conductive silver thick liquid 500 of this patent here is as the positive and negative both ends electrode of ITO membrane 300, and both ends electrode is through loading voltage, and under the high transmissivity circumstances of keeping the product, ITO membrane 300 does not have the stray light influence and can the even heating, makes the product surface ice, snow, and the frost is got rid of fast, makes laser not receive its cold environment's influence.

The front hardening coating 600 mainly plays a role in scraping resistance, the rear hardening coating 200 mainly protects the scraping resistance on one hand, and on the other hand, other films are conveniently plated on the laser radar cover body 100, the hardening coating can be acrylic coating or siloxane coating, the thickness of the films ranges from 8 microns to 20 microns, and the hardening coating can improve the performance of the outer surface of the laser radar cover body, meet the performance of the outer surface of a vehicle gauge grade and improve the adhesive force of the conductive heating film on the inner surface.

As shown in FIG. 1, as an optimization, the front part of the front hardening coating 600 is provided with a front light-transmitting AR film layer 700, the front part of the front light-transmitting AR film layer 700 is provided with an anti-fingerprint film layer 800, and the front light-transmitting AR film layer 700 and the rear light-transmitting AR film layer 400 are made of SiO₂And TiO₂The multilayer combination forms, here can strengthen light transmission performance through the printing opacity AR rete in front and back, can play simultaneously through preventing fingerprint rete 800 and prevent the fingerprint, the hydrophobic function of high angle.

Firstly, proper plastic particles are selected according to the requirements of customers and comprehensive factor analysis, the laser radar cover body 100 is formed by injection molding and compression, the laser radar cover body 100 is made of transparent or semitransparent materials including but not limited to PC, PMMA and PEI particles, one or more layers of hardened coatings are sprayed on the surface and the back of the laser radar cover body 100 and have certain hydrophobic functional coatings, a rear transparent AR film layer 400 for enhancing light transmission is plated on the back, then a front transparent AR film layer 700 and a fingerprint-proof film layer 800 are plated on the front hardened coating 600, the front transparent AR film layer 700 improves the overall transmittance of the product, the fingerprint-proof film layer 800 enables the surface of the laser radar cover body 100 to have a high hydrophobic function, the surface has the functions of scratch resistance, aging resistance, fingerprint resistance and high-angle hydrophobicity, the ITO film 300 and the conductive silver paste 500 or the conductive ink lead wire are added on the back of the laser radar cover body 100, and after the hardened coating 200 is sprayed on the back, and performing cold plating of the ITO film 300 on the back surface, annealing and pressure maintaining treatment, and performing a conductive silver paste 500 or conductive ink process and a light-transmitting AR film plating process, wherein the conductive silver paste 500 or the conductive ink process is used as a positive lead and a negative lead of the ITO film 300, voltage is applied to uniformly heat the surface of the product, or a copper wire is etched to be used as a lead to connect two ends of a conductive heating film into a circuit loop.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the scope and spirit of the utility model as defined by the accompanying claims.

Claims

1. The utility model provides a laser radar light shield with ITO membrane, includes laser radar cover body, its characterized in that, the front of laser radar cover body harden the coating before having, harden the coating after having at the back of laser radar cover body, the back harden the coating back ITO membrane has, transparent AR rete after having the ITO membrane, the ITO membrane on plated electrically conductive silver thick liquid, electrically conductive silver thick liquid as the positive and negative both ends of ITO membrane.

2. The ITO film-bearing lidar hood of claim 1, wherein the front hardened coating has a front light-transmissive AR film layer on a front portion thereof, and an anti-fingerprint film layer on a front portion of the front light-transmissive AR film layer.

3. The ITO film-bearing lidar mask of claim 2, wherein the front and back light-transmissive AR films are formed of SiO₂And TiO₂And a plurality of layers are combined.

4. The ITO film-bearing lidar hood of claim 1, 2 or 3, wherein the pre-cured coating and the cured coating are acrylic coating or silicone coating, and the thickness of the coating film layer is in the range of 8-20 μm.

5. The laser radar shade with the ITO film of claim 1, 2 or 3, wherein the ITO film is formed by doping indium oxide with tin on a thin film, and the thickness of the ITO film is less than 200 nm.