Display apparatus
First Claim
1. A display apparatus comprising:
- an image forming device which emits image light;
a light guide member which has an image light incidence portion, an external light incidence portion, and a light emission portion;
a first diffractive optical element provided in the light emission portion; and
an external light noise reduction element provided in the external light incidence portion.
1 Assignment
0 Petitions
Accused Products
Abstract
In a display apparatus, image light emitted from an image forming device is incident on an image light incidence portion of a light guide member after being diffracted by a second diffractive optical element, and emitted from an image light emission portion after moving forward in the light guide member. The image light emitted from the image light emission portion is diffracted by a first diffractive optical element and reaches the eyes of an observer. On a position where unnecessary external light is made incident on the light guide member, an external light noise reduction element which has a polarizing member and the like is provided. For this reason, even when the unnecessary external light is made incident on the light guide member, it is possible to inhibit the unnecessary external light from reaching the eye of the observer.
14 Citations
15 Claims
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1. A display apparatus comprising:
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an image forming device which emits image light; a light guide member which has an image light incidence portion, an external light incidence portion, and a light emission portion; a first diffractive optical element provided in the light emission portion; and an external light noise reduction element provided in the external light incidence portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification