US 9,868,400 B2 · Image display mirror for a vehicle

Abstract

Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a first polarizing plate; a first liquid crystal cell; a half mirror; and an image display apparatus in the stated order from a viewer side, in which in the first liquid crystal cell, a state in which a polarization direction of incident linearly polarized light is maintained and a state in which the incident linearly polarized light is transformed into circularly polarized light are switched in accordance with a voltage to be supplied.

Claims9

Dependent claims

An image display mirror for a vehicle, comprising:

a first polarizing plate;
a first liquid crystal cell;
a half mirror;
and
an image display apparatus in the stated order from a viewer side,
wherein the first liquid crystal cell is configured to switch, in accordance with a voltage to be applied, between a first state in which a polarization direction of incident linearly polarized light is maintained and a second state in which the incident linearly polarized light is transformed into circularly polarized light.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/011,839Filed 1 Feb 2016

Priority

JP 2015-0186572 Feb 2015

Published

US 2016/0221507 A14 Aug 2016

Granted

16 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

B60R 1/12
Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or…:…
G02B 27/144
Operating by reflection only: using partially transparent surfaces without spectral selectivity
G02F 1/133528
Structural association of cells with optical devices, e.g. polarisers or reflectors: polarisers
G02F 1/13363
Structural association of cells with optical devices, e.g. polarisers or reflectors: birefringent elements, e.g. for optical compensation

Image display mirror for a vehicle

Life of this patent

Image display mirror for a vehicle

Life of this patent

Abstract

Claims9