High-resolution freeform eyepiece design with a large exit pupil
US-2018045949-A1 · Feb 15, 2018 · US
Optical see-through free-form head-mounted display
US10416452B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10416452-B2 |
| Application number | US-201514956632-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 2, 2015 |
| Priority date | Apr 20, 2009 |
| Publication date | Sep 17, 2019 |
| Grant date | Sep 17, 2019 |
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- Title
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Abstract
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A see-through free-form head-mounted display including a wedge-shaped prism-lens having free-form surfaces and low F-number is provided.
First claim
Opening claim text (preview).
What is claimed is: 1. A free-form prism-lens for use in an optical see-through head-mounted display, comprising: a first free-form surface configured to receive light from a micro-display and configured to transmit the received light into the body of the prism-lens; a second free-form surface configured to receive the light transmitted into the body of the prism-lens from the first free-form surface and configured to totally internally reflect the received light at the second surface; and a third free-form surface configured to receive the light reflected by the second free-form surface and configured to reflect the light out of the prism-lens, wherein the prism-lens has an f-number less than 2. 2. The free-form prism-lens according to claim 1 , wherein the first free-form surface is described by z = c ( x 2 + y 2 ) 1 + sqrt ( 1 - ( 1 + k ) c 2 ( x 2 + y 2 ) ) + ∑ j = 2 66 C j x m y n , j = [ ( m + n ) 2 + m + 3 n ] / 2 + 1 , where the z is the sag of the first free-form surface measured along the z-axis of a local x, y, z coordinate system, c is the vertex curvature (CUY), k is the conic constant, and C j is the coefficient for x m y n . 3. The free-form prism-lens according to claim 2 , wherein the second free-form surface is described by z = c ( x 2 + y 2 ) 1 + sqrt ( 1 - ( 1 + k ) c 2 ( x 2 + y 2 ) ) +
Assignees
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Classifications
Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00) · CPC title
involving prisms (G02B13/12 takes precedence) · CPC title
- G02B27/0172Primary
characterised by optical features · CPC title
wherein the system is made of a single block of optical material, e.g. solid catadioptric systems · CPC title
comprising a combiner of particular shape, e.g. curvature · CPC title
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- What does patent US10416452B2 cover?
- A see-through free-form head-mounted display including a wedge-shaped prism-lens having free-form surfaces and low F-number is provided.
- Who is the assignee on this patent?
- Univ Arizona, Beijing Institute Tech
- What technology area does this patent fall under?
- Primary CPC classification G02B27/0172. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 17 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).