US 10,473,926 B2 · Multi-image display apparatus including diffractive optical lens element

Abstract

A multi-image display apparatus for augmented reality (AR) or mixed reality (MR) includes a diffractive optical lens element, an image forming device configured to form a first image including a first color image, a second color image, and a third color image, and an optical system configured to transfer the first image and a second image to the diffractive optical lens element, the second image transferred along a path different from a path of the first image. The optical system is configured to offset chromatic aberration of the diffractive optical lens element by providing different optical path lengths for the first color image, the second color image, and the third color image.

Claims40

Dependent claims

A multi-image display apparatus comprising:

a diffractive optical lens element having a focal length varying based on a wavelength and a polarization state of incident light;
an image forming device configured to form a first image comprising a first color image, a second color image, and a third color image;
and
an optical system configured:
to transfer the first image and a second image to the diffractive optical lens element, the second image being transferred along a second optical path different from a first optical path along which the first image is transferred, and
to offset chromatic aberration of the diffractive optical lens element by providing different optical path lengths for the first color image, the second color image, and the third color image.

3 more elements

A multi-image display apparatus comprising:

a diffractive optical lens element having a focal length varying based on a wavelength of light;
a first image forming device configured to form a first image comprising a first color image, a second color image, and a third color image;
a second image forming device configured to form a second image;
and
an optical system configured to:
provide the first color image having a first optical path length, a second color image having a second optical path length, and the third color image having a third optical path length, the first, second, and third optical path lengths being of different lengths;
and
to transfer the first image formed by the first image forming device and the second image formed by the second image forming device to the diffractive optical lens element,
wherein the diffractive optical lens element is configured to focus the first color image, the second color image, and the third color image included in the first image on a same plane.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/964,888Filed 27 Apr 2018

Priority

KR 10-2017-01652334 Dec 2017

Published

US 2019/0171005 A16 Jun 2019

Granted

12 Nov 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

G02B 27/0056
For correction of secondary colour or higher-order chromatic aberrations: by using a diffractive optical element
G02B 6/0026
Provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source: wavelength…
G02B 6/005
Means for improving the coupling-out of light from the light guide: provided by one optical element, or plurality thereof, placed on the light…
G02B 27/00
Optical systems or apparatus not provided for by any of the groups

Multi-image display apparatus including diffractive optical lens element

Life of this patent

Multi-image display apparatus including diffractive optical lens element

Life of this patent

Abstract

Claims40