US 12,411,455 B2Granted

Display device for head-mounted display

AssigneeMagnolia White Corporation

InventorsShinichi Komura, Koichi Okuda, Ken Onoda, Hiroaki Kijima

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Abstract

According to one embodiment, a display device includes a display panel, a holographic element which reflects light having a specific incident angle and transmits light having an incident angle different from the specific incident angle, a retardation film provided between the display panel and the holographic element, a transflective element which reflects, of the light which passed through the holographic element, first circularly polarized light, and transmits second circularly polarized light rotating in an opposite direction of the first circularly polarized light, and a lens element which has a lens effect of condensing the second circularly polarized light which passed through the transflective element.

Claims17

Dependent claims

A display device comprising:

a display panel including a polarizer and comprising a display area configured to emit display light which is linearly polarized light;
a holographic element configured to reflect light having a specific incident angle and configured to transmit light having an incident angle different from the specific incident angle;
a retardation film provided between the display panel and the holographic element;
a transflective element which faces the holographic element across an intervening space, is configured to reflect, of the light which passed through the holographic element, first circularly polarized light, and is configured to transmit second circularly polarized light rotating in an opposite direction of the first circularly polarized light;
and
a lens element which faces the transflective element and has a lens effect of condensing the second circularly polarized light which passed through the transflective element.

3 more elements

A display device comprising:

a display panel including a polarizer and comprising a display area configured to emit display light which is linearly polarized light;
a first holographic element configured to reflect light having a first specific incident angle and configured to transmit light having an incident angle different from the first specific incident angle;
a second holographic element which faces the first holographic element across an intervening space, is configured to reflect, of the light which passed through the first holographic element, light having a second specific incident angle different from the first specific incident angle, and is configured to transmit light having an incident angle different from the second specific incident angle;
a lens element which faces the second holographic element and has a lens effect of condensing, of the light which passed through the second holographic element, first circularly polarized light;
and
a retardation film provided between the display panel and the first holographic element or between the second holographic element and the lens element.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/970,681Filed 21 Oct 2022
Priority: JP 2021-17236121 Oct 2021
Published: US 2023/0127372 A127 Apr 2023
Granted: 9 Sep 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

G02B 27/0172
Head mounted: characterised by optical features
G03H 1/2205
Reconstruction geometries or arrangements: using downstream optical component
G02B 5/3016
Polarising elements: involving passive liquid crystal elements
G02B 5/3025
Polarising elements: polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state