# US 2025/0147322 A1 · Projector for Use in a Head-Mounted Display Device System

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2025/0147322 A1
- Document ID: US20250147322A1
- Status: Published application
- Kind: A1
- Application number: 18/700,738
- Filed: 2022-09-21
- Published: 2025-05-08
- Earliest claimed: 2022-09-21
- Assignees: Ticona LLC
- Applicants: Ticona LLC
- Inventors: Yiqin Wang; Shuai Xu; Young Shin Kim; Fangfang Tao
- Web page: https://patentgrep.com/patent/US20250147322A1

## CPC

- C08K 3/34: Silicon-containing compounds
- G02B 27/0176: {characterised by mechanical features}
- C09K 19/3809: {Polyesters; Polyester derivatives, e.g. polyamides}
- C09K 19/52: characterised by components which are not liquid crystals, e.g. additives {with special physical aspect: solvents, solid particles}
- G02B 27/0172: {characterised by optical features}
- G03B 21/145: {Housing details, e.g. position adjustments thereof}
- G03B 21/16: Cooling; Preventing overheating
- C09K 2019/521: {Inorganic solid particles}
- G02B 2027/0178: {Eyeglass type (eyeglass details G02C)}
- H01S 5/02469: {Passive cooling, e.g. where heat is removed by the housing as a whole or by a heat pipe without any active cooling element like a TEC}
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- H01S: DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL

## Abstract

A projector for use in a head-mounted display system is provided. The projector comprises an illumination source and an optical display that is capable of producing an image derived from light emitted by the illumination source. The projector contains a polymer matrix that contains a thermoplastic polymer, wherein the polymer composition exhibits a deflection temperature under load of about 50° C. or more as determined in accordance with ISO 75: 2013 at a load of 1.8 MPa.

## Claims

### Claim 1

A projector for use in a head-mounted display system, wherein the projector comprises an illumination source and an optical display that is capable of producing an image derived from light emitted by the illumination source, wherein the projector contains a polymer matrix that contains a thermoplastic polymer, wherein the polymer composition exhibits a deflection temperature under load of about 50° C. or more as determined in accordance with ISO 75:2013 at a load of 1.8 MPa.

### Claim 2 (depends on 1)

The projector of claim 1, wherein the polymer composition exhibits a melt viscosity of about 300 Pa-s or less as determined in accordance with ISO 11443:2021 at a shear rate of 1,000 s−1 and temperature above the melting temperature of the composition.

### Claim 3 (depends on 1)

The projector of claim 1, wherein the polymer composition exhibits an in-plane thermal conductivity of about 1 W/m-K or more as determined in accordance with ASTM E1461-13(2022).

### Claim 4 (depends on 1)

The projector of claim 1, wherein the polymer composition exhibits a melting temperature of about 150° C. or more.

### Claim 5 (depends on 1)

The projector of claim 1, wherein the polymer matrix includes an aromatic polymer.

### Claim 6 (depends on 5)

The projector of claim 5, wherein the polymer matrix includes a thermotropic liquid crystalline polymer.

### Claim 7 (depends on 6)

The projector of claim 6, wherein the thermotropic liquid crystalline polymer contains repeating units derived from one or more aromatic dicarboxylic acids, one or more aromatic hydroxycarboxylic acids, or a combination thereof.

### Claim 8 (depends on 7)

The projector of claim 7, wherein the aromatic hydroxycarboxylic acids include 4-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, or a combination thereof.

### Claim 9 (depends on 8)

The projector of claim 8, wherein the aromatic dicarboxylic acids include terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, or a combination thereof.

### Claim 10 (depends on 7)

The projector of claim 7, wherein the liquid crystalline polymer further contains repeating units derived from one or more aromatic diols.

### Claim 11 (depends on 10)

The projector of claim 10, wherein the aromatic diols include hydroquinone, 4,4′-biphenol, or a combination thereof.

### Claim 12 (depends on 6)

The projector of claim 6, wherein the thermotropic liquid crystalline polymer is wholly aromatic.

### Claim 13 (depends on 5)

The projector of claim 5, wherein the polymer matrix includes a polyarylene sulfide.

### Claim 14 (depends on 5)

The projector of claim 5, wherein the polymer matrix includes an aromatic polyester.

### Claim 15 (depends on 1)

The projector of claim 1, wherein the polymer composition exhibits a dielectric strength of about 10 kilovolts per millimeter or more as determined in accordance with IEC 60234-1:2013.

### Claim 16 (depends on 1)

The projector of claim 1, wherein the polymer composition exhibits a comparative tracking index of about 170 volts or more as determined in accordance with IEC 60112:2003 at a thickness of 3 millimeters.

### Claim 17 (depends on 1)

The projector of claim 1, wherein the polymer composition contains a thermally conductive filler.

### Claim 18 (depends on 17)

The projector of claim 17, wherein the thermally conductive filler includes mineral particles, mineral fibers, or a combination thereof.

### Claim 19 (depends on 1)

The projector of claim 1, wherein the polymer composition contains reinforcing fibers.

### Claim 20 (depends on 1)

The projector of claim 1, wherein the optical display includes a liquid crystal display, organic light-emitting diode display, field emission display, quantum-dot display, or a combination thereof.

### Claim 21 (depends on 1)

The projector of claim 1, wherein the illumination source includes a laser diode, light-emitting diode, or a combination thereof.

### Claim 22 (depends on 1)

The projector of claim 1, further comprising a housing that supports and/or receives the illumination source and the optical display, wherein the housing comprises the polymer composition.

### Claim 23 (depends on 1)

The projector of claim 1, wherein the illumination source is mounted to a heat sink and/or holder, wherein the heat sink, the holder, or both comprise the polymer composition.

### Claim 24 (depends on 1)

The projector of claim 1, further comprising an optical waveguide that receives image light from the optical display.

### Claim 25 (depends on 1)

A head-mounted display system comprising the projector of claim 1.

### Claim 26 (depends on 25)

The head-mounted display system of claim 25, wherein the system contains one or more lenses disposed in an opening of a frame.

### Claim 27 (depends on 26)

The head-mounted display system of claim 26, wherein the projector is connected to the frame, the lenses, or a combination thereof.