# US 2021/0278740 A1 · Optical beam processing device

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- Number: US 2021/0278740 A1
- Document ID: US20210278740A1
- Status: Published application
- Kind: A1
- Application number: 17/321,652
- Filed: 2021-05-17
- Published: 2021-09-09
- Earliest claimed: 2019-05-17
- Assignees: Koninklijke Philips N.V.
- Applicants: Koninklijke Philips N.V.
- Inventors: MARK THOMAS JOHNSON; FRANCISCUS JOHANNES GERARDUS HAKKENS; ACHIM HILGERS
- Web page: https://patentgrep.com/patent/US20210278740A1

## CPC

- G02B 26/001: {based on interference in an adjustable optical cavity (interference filters G02B5/28; devices or arrangements using multiple reflections in spectrometry or monochromators G01J3/26)}
- G02F 1/29: for the control of the position or the direction of light beams, i.e. deflection
- G02B 26/108: {having one or more prisms as scanning elements}
- G02F 1/0128: {based on electro-mechanical, magneto-mechanical, elasto-optic effects}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

A light transmissive optical component includes an electroactive material layer structure having a controlled deformation. When actuating the component, different relative thickness changes are implemented at different regions of the electroactive material layer thereby providing a non-uniform change in an optical function between those different regions.

## Claims

### Claim 1

A light transmissive optical component comprising:
an electroactive material layer structure comprising an optically active layer which implements an optical function;
an electrode arrangement for controlling deformation of the electroactive material layer structure thereby to change a light transmission property of the light transmissive optical component; and
a drive arrangement for controlling drive signals applied to the electrode arrangement,
wherein the drive arrangement is adapted to induce different relative thickness changes at different regions of the electroactive material layer structure thereby providing non-uniform change in optical function between those different regions, and
wherein at least some different regions of the electroactive material layer structure have different dielectric constant and/or stiffness.

### Claim 2 (depends on 1)

The light transmissive optical component as claimed in claim 1, wherein the electroactive material layer structure comprises a composite of an electroactive material and particles for locally modifying the dielectric constant or stiffness.

### Claim 3 (depends on 1)

The light transmissive optical component as claimed in claim 1, wherein the electrode arrangement comprises an array of electrodes such that different actuation signals are applied to the different regions of the electroactive material layer structure.

### Claim 4 (depends on 3)

The light transmissive optical component as claimed in claim 3, wherein the electrode arrangement comprises a signal processing unit associated with each electrode for processing a shared electrode drive signal to derive modified local electrode drive signals.

### Claim 5 (depends on 1)

The light transmissive optical component as claimed in claim 1, wherein the electroactive material layer structure comprises a partial light absorbing layer or a light scattering layer.

### Claim 6 (depends on 5)

The light transmissive optical component as claimed in claim 5, wherein the electroactive material layer structure comprises a composite of an electroactive material and light absorbing or light scattering particles.

### Claim 7 (depends on 1)

The light transmissive optical component as claimed in claim 1, wherein the electroactive material layer structure comprises a refracting layer.

### Claim 8 (depends on 7)

The light transmissive optical component as claimed in claim 7, wherein the electroactive material layer structure comprises a composite of an electroactive material and particles of a different refractive index.

### Claim 9 (depends on 1)

The light transmissive optical component as claimed in claim 1, wherein the electroactive material layer structure is light color change layer structure.

### Claim 10 (depends on 9)

The light transmissive optical component as claimed in claim 9, wherein the electroactive material layer structure comprises a composite of an electroactive material and color change particles.

### Claim 11 (depends on 10)

The light transmissive optical component as claimed in claim 10, wherein the color change particles comprise phosphor particles.

### Claim 12 (depends on 1)

The light transmissive optical component as claimed in claim 1, wherein the electroactive material layer structure is light direction control layer.