Electronic device using an augmented reality

Patent metadata

Field	Value
Publication number	US-11415802-B2
Application number	US-201916490033-A
Country	US
Kind code	B2
Filing date	Aug 2, 2019
Priority date	Aug 2, 2019
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

Provided is an electronic device using a virtual reality, which is capable of self-aligning an in-coupling angle and an out-coupling angle by using a mechanical mechanism. An electronic device according to an aspect of the present invention includes: a glass body including a frame; an optical engine mounted on a leg of the frame and generating and emitting an image; an optical element mounted on the frame and performing in-coupling and out-coupling of the image emitted from the optical engine and displaying the corresponding image to a user; and a self alignment unit automatically aligning an in-coupling angle and an out-coupling angle of the optical element.

First claim

What is claimed is:

1. An electronic device using a virtual reality, comprising:
a glass body including a frame;
an optical engine mounted on a leg of the frame and generating and emitting an image;
an optical element mounted on the frame and performing in-coupling and out-coupling of the image emitted from the optical engine and displaying the corresponding image to a user; and
a self alignment unit automatically aligning an in-coupling angle and an out-coupling angle of the optical element,
wherein the optical element mounted on the frame rotates automatically in conjunction with a rotation of the optical engine mounted on the leg,
wherein the self alignment unit adjusts a rotation angle of the out-coupling angle to be smaller than a rotational angle of the in-coupling angle,
wherein the self alignment unit adjusts the out-coupling angle so that the out-coupling angle rotates at θ when the in-coupling angle rotates at 2θ, and
wherein the self alignment unit includes a first gear and a second gear having a gear ratio of 2:1 and a third gear positioned between the first and second gears and matching rotational directions of the first gear and the second gear.

2. The electronic device of claim 1 , wherein the self alignment unit adjusts the out-coupling angle by rotating the first gear according to rotational force of the second gear transmitted through the third gear.

3. The electronic device of claim 2 , wherein the first gear is a lens gear provided in the optical element, the third gear is an idle gear coupled to the lens gear, and the second gear is a temple gear coupled to the idle gear.

4. The electronic device of claim 3 , wherein the frame includes a first shaft to which the lens gear is coupled, a second shaft to which the temple gear is coupled, and a third shaft to which the idle gear is coupled.

5. The electronic device of claim 1 , wherein the optical element includes an in-coupler for the in-coupling and an out-coupler for the out-coupling.

6. The electronic device of claim 5 , wherein the optical element is configured by a diffractive optical element (DOE) or a hologram optical element (HOE).

7. The electronic device of claim 6 , further comprising:
two of the optical engine, two of the optical element, and two of the self alignment unit.

Assignees

• Lg Electronics Inc

Inventors

• Shin Seungyong
• Kim Kyoungtae
• Jo Seong
• Hwang Changkyu

Classifications

• G02B2027/014

  comprising information/image processing systems · CPC title

• G02B5/32

  Holograms used as optical elements · CPC title

• G02B27/0176

  characterised by mechanical features · CPC title

• G02B6/0088

  of the light guide or other optical sheets in the package · CPC title

• G02B27/0172 Primary

  characterised by optical features · CPC title