Image display mirror for a vehicle

Abstract

The invention provides an image display mirror for a vehicle. The image display mirror includes a half transparent and half reflecting mirror and an image display apparatus, reduces an influence of a reflected image generated by the half transparent and half reflecting mirror, and is excellent in visual conformation of an image displayed on the image display apparatus. The image display mirror for the vehicle is equipped with a first polarizing plate arranged so as to be rotatable in a plane, the half transparent and half reflecting mirror having a reflection axis and configured to reflect polarized light, and the image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; a rotation of the first polarizing plate changes an angle of an absorption axis of the polarizer relative to a reflection axis of the half transparent and half reflecting mirror when an image is not displayed on the image display apparatus and when the image is displayed thereon; when the image is not displayed, the absorption axis of the polarizer and the reflection axis of the half transparent and half reflecting mirror are perpendicular to each other; and when the image is displayed, the absorption axis of the polarizer and the reflection axis of the half transparent and half reflecting mirror are parallel to each other.

Description

technical field [0001] The present invention relates to an image display mirror for vehicles. Background technique [0002] Conventionally, a technique is known in which an image display device is combined with a rearview mirror for a vehicle to display an image. For example, Patent Document 1 discloses an image display mirror configured by arranging a half mirror on the front surface (viewing side) of a monitor. According to this image display mirror, by the reflection image that is formed by half mirror, can realize rear visual confirmation, on the other hand, when displaying image on monitor, this image passes through half mirror and can visually confirm. . [0003] In such an image display mirror, when the amount of light from behind the vehicle is large, there is a problem that the reflected image hinders the visibility of the image displayed on the monitor. Cited Document 1 proposes a technique for reducing the influence of a reflected image by setting the angle of ...

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Problems solved by technology

[0004] However, when it is difficult to make the reflected image formed by the half mirror into an image that does not hinder the visibility of the monitor image, for example, it is applied to a ceiling that transmits light such as a panoramic sunroof (panoramicroof) or a sunroof. In the case of a vehicle or a convertible, the influence of the reflected image cannot be reduced by citing the image display mirror of Document 1

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