# US 12,007,559 B2 · Multi-layered thin combiner

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- Number: US 12,007,559 B2
- Document ID: US12007559B2
- Status: Granted
- Kind: B2
- Application number: 17/356,818
- Filed: 2021-06-24
- Published: 2021-10-21
- Granted: 2024-06-11
- Earliest claimed: 2018-12-24
- Assignees: Spectralics Ltd.
- Applicants: Spectralics Ltd.
- Inventors: Yuval Kashter; Eran Falek; Ran Abraham Bar-Yosef
- Web page: https://patentgrep.com/patent/US12007559B2

## CPC

- G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)}
- G02B 27/01: Head-up displays
- G02B 27/0172: {characterised by optical features}
- G02B 27/142: {Coating structures, e.g. thin films multilayers}
- G02B 2027/0107: {with optical power}
- G02B 2027/0194: {with combiner of laminated type, for optical or mechanical aspects}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A multi-layered thin combiner (MLTC) is provided herein. The MLTC may include: a plurality of connectable layers each having a separate active area coated with a primary partially reflective filter; wherein each active area comprises a discrete fraction of an effective aperture; and wherein the active areas are configured to align, when said connectable layers are connected, to collectively define a complete effective aperture.

## Claims

### Claim 1

A multi-layered thin combiner (MLTC), comprising:
a plurality of discrete connectable layers, each of said plurality of discrete connectable layers having a continuous area coated with a primary partially reflective filter;
wherein each continuous area comprises a discrete fraction of an effective aperture of the MLTC;
wherein the continuous areas are configured to align, when said plurality of discrete connectable layers are connected together into a multi-layered structure, to form a continuous composite coated area and collectively define the effective aperture; and
wherein each of said continuous areas further comprises a partial overlap portion coated with a graduated partially reflective filter, and wherein two or more partial overlap portions are configured to align, when said discrete connectable layers are connected, to form a composite overlap portion operable to transmit light with uniform transmissivity throughout said composite overlap portion, the MLTC thereby being configured to merge a virtual image with a real-world image.

### Claim 2 (depends on 1)

The MLTC according to claim 1, wherein said MLTC is adhered to a transparent surface.

### Claim 3 (depends on 2)

The MLTC according to claim 2, wherein said transparent surface is a window, windscreen or windshield.

### Claim 4 (depends on 1)

The MLTC according to claim 1, wherein said MLTC has a thickness of three millimeters or less.

### Claim 5 (depends on 1)

The MLTC according to claim 1, wherein said MLTC further comprises a secondary partially reflective filter configured to block transmission of light with bandwidth and wavelength substantially equal to that of light modulated by the primary partially reflective filter,
wherein the secondary partially reflective filter is applied externally to the MLTC.

### Claim 6

A system for augmenting a real-world view with one or more virtual images, said system comprising:
the MLTC according to any preceding claim positioned between a user and the real-world view; and
a computer processing device operable to produce and emit, via a lens focused towards said effective aperture of said MLTC, overlay graphics for augmentation with said real-world view.