# US 12,109,796 B2 · Sensor applique with ultra violet curable pressure sensitive adhesive

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- Number: US 12,109,796 B2
- Document ID: US12109796B2
- Status: Granted
- Kind: B2
- Application number: 17/750,843
- Filed: 2022-05-23
- Published: 2022-09-08
- Granted: 2024-10-08
- Earliest claimed: 2019-05-22
- Assignees: GM Global Technology Operations LLC
- Applicants: GM Global Technology Operations LLC
- Inventors: Adam F. Gross; Berryinne Decker; Mike Hilston; Adam L. Wright; Anthony L. Smith
- Web page: https://patentgrep.com/patent/US12109796B2

## CPC

- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- G01S 7/4813: {Housing arrangements}
- B32B 7/06: permitting easy separation
- B32B 27/08: of synthetic resin
- B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE}
- B32B 37/12: characterised by using adhesives
- B32B 38/0008: {Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation (heat treatment B32B38/0036)}
- G01S 7/4811: {common to transmitter and receiver}
- B32B 2037/1253: {curable adhesive}
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2307/412: Transparent
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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

## Abstract

An applique for covering a clear substrate through which light is at least one of transmitted and received includes: a transparent sheet having: a first surface; and a second surface that is opposite the first surface; and a ultraviolet (UV) curable pressure sensitive adhesive that is disposed on the first surface of the transparent sheet, that is curable using UV light, and that is configured to adhere the transparent sheet to a third surface of the clear substrate.

## Claims

### Claim 1

A system comprising:
a light detection and ranging (LIDAR) sensor including a lens through which light is transmitted and received, the lens having an outer surface; and
an applique that is adhered to the outer surface of the lens, the applique comprising:
a transparent sheet having:
a first surface; and
a second surface that is opposite the first surface; and
a ultraviolet (UV) curable pressure sensitive adhesive that is disposed on the first surface of the transparent sheet, that is curable using UV light, and that is configured to adhere the transparent sheet to the outer surface of the lens,
wherein, prior to application of the UV curable pressure sensitive adhesive to the transparent sheet, the first surface of the transparent sheet is treated by an ozone treatment process,
wherein the lens exhibits a first index of refraction;
wherein the UV curable pressure sensitive adhesive exhibits a second index of refraction after being UV cured;
wherein the transparent sheet exhibits a third index of refraction;
wherein the third index of refraction of the transparent sheet is less than the second index of refraction of the UV curable pressure sensitive adhesive; and
wherein the second index of refraction of the UV curable pressure sensitive adhesive is less than the first index of refraction of the lens.

### Claim 2 (depends on 1)

The system of claim 1 wherein a thickness of the UV curable pressure sensitive adhesive is 2 mils.

### Claim 3 (depends on 1)

The system of claim 1 wherein the transparent sheet is a fluoropolymer sheet.

### Claim 4 (depends on 1)

The system of claim 1 wherein the transparent sheet is fluorinated ethylene propylene.

### Claim 5 (depends on 1)

The system of claim 1 wherein the UV curable pressure sensitive adhesive is a dry adhesive.

### Claim 6 (depends on 1)

The system of claim 1 wherein the UV curable pressure sensitive adhesive includes a sheet of UV curable adhesive that is cured using the UV light after application of the applique to the lens.

### Claim 7 (depends on 1)

The system of claim 1 wherein the UV curable pressure sensitive adhesive is configured to adhere better to the first surface of the transparent sheet than to the outer surface of the lens.

### Claim 8 (depends on 1)

The system of claim 1, wherein the outer surface of the lens is a planar surface.

### Claim 9 (depends on 1)

The system of claim 1, wherein the outer surface of the lens is a convex surface.

### Claim 10 (depends on 1)

The system of claim 1 further comprising a release liner that covers the UV curable pressure sensitive adhesive prior to the application of the applique to the lens and that is removed prior to the application of the applique to the lens.

### Claim 11 (depends on 10)

The system of claim 10 wherein the UV curable pressure sensitive adhesive is configured to adhere better to the first surface of the transparent sheet than to the release liner.

### Claim 12 (depends on 1)

The system of claim 1 further comprising a coating on the second surface of the transparent sheet.

### Claim 13 (depends on 12)

The system of claim 12 wherein the coating includes at least one of:
an anti-icing coating;
an anti fouling coating;
an anti-scratch coating;
an anti-reflective coating;
a tint;
a reflective coating; and
a hydrophilic coating.

### Claim 14

A sensor comprising:
a clear substrate having a first surface;
a light detection and ranging (LIDAR) sensor module configured to receive light through the clear substrate; and
an applique that is adhered to the first surface of the clear substrate and that includes:
a transparent sheet having:
a second surface; and
a third surface that is opposite the second surface; and
a ultraviolet (UV) cured pressure sensitive adhesive that is sandwiched between the second surface of the transparent sheet and the first surface of the clear substrate and that adheres the transparent sheet to the clear substrate;
wherein a lens of the LIDAR sensor module exhibits a first index of refraction;
wherein the UV cured pressure sensitive adhesive exhibits a second index of refraction;
wherein the transparent sheet exhibits a third index of refraction;
wherein the third index of refraction of the transparent sheet is less than the second index of refraction of the UV cured pressure sensitive adhesive; and
wherein the second index of refraction of the UV cured pressure sensitive adhesive is less than the first index of refraction of the lens.

### Claim 15 (depends on 14)

The sensor of claim 14 wherein the sensor module is further configured to transmit light through the clear substrate.

### Claim 16 (depends on 14)

The sensor of claim 14 wherein:
the transparent sheet is fluorinated ethylene propylene.

### Claim 17 (depends on 14)

The sensor of claim 14 wherein the applique further includes, on the third surface of the transparent sheet, at least one of:
an anti-icing coating;
an anti fouling coating;
an anti-scratch coating;
an anti-reflective coating;
a tint;
a reflective coating; and
a hydrophilic coating.

### Claim 18 (depends on 14)

The sensor of claim 14 further comprising a release liner that covers the UV cured pressure sensitive adhesive prior to the application of the applique to the LIDAR sensor module and that is removed prior to the application of the applique to the LIDAR sensor module.