Virtual image display device
First Claim
1. A virtual image display device, comprising:
- an image display device that emits image light;
a projective optical system that allows the image light emitted from the image display device to be incident; and
a light guiding member, comprising;
a light guiding portion;
a light incidence portion that allows the image light to be incident to the light guiding portion; and
a light emission portion that emits the image light guided by the light guiding portion to the outside, and that makes the image light visible through the light emission portion,the light guiding portion having a first reflective surface and a second reflective surface that are disposed in parallel with each other and allow the light beam to be guided through a substantially total reflection,the light incidence portion having a third reflective surface that makes a predetermined angle with respect to the first reflective surface,the light emission portion having a fourth reflective surface that makes a predetermined angle with respect to the first reflective surface,the image light from the image display device being guided into the light guiding member with a number of times of reflection that is different in each image light beam, and a plurality of image light beams formed in correspondence with the number of times of reflection are combined through the light emission portion and are emitted to the outside, andthe light guiding member being configured to increase a width of an angle of emission of the image light emitted from the light emission portion.
1 Assignment
0 Petitions
Accused Products
Abstract
Image light reflected by a third reflective surface of a light incidence portion is propagated while being totally reflected by first and second reflective surfaces of a light guiding portion, is reflected by a fourth reflective surface of a light emission portion, and is incident to observer'"'"'s eye as a virtual image. At this time, the number of times of reflection of first image light, which is emitted from a first partial region of an image display device, in the light guiding portion, and the number of times of reflection of second image light, which is emitted from a second partial region of the image display device in the light guiding portion are different from each other, such that it is possible to take in the image light beams from the different partial regions of the image display device with a relatively wide angle of view.
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Citations
17 Claims
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1. A virtual image display device, comprising:
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an image display device that emits image light; a projective optical system that allows the image light emitted from the image display device to be incident; and a light guiding member, comprising; a light guiding portion; a light incidence portion that allows the image light to be incident to the light guiding portion; and a light emission portion that emits the image light guided by the light guiding portion to the outside, and that makes the image light visible through the light emission portion, the light guiding portion having a first reflective surface and a second reflective surface that are disposed in parallel with each other and allow the light beam to be guided through a substantially total reflection, the light incidence portion having a third reflective surface that makes a predetermined angle with respect to the first reflective surface, the light emission portion having a fourth reflective surface that makes a predetermined angle with respect to the first reflective surface, the image light from the image display device being guided into the light guiding member with a number of times of reflection that is different in each image light beam, and a plurality of image light beams formed in correspondence with the number of times of reflection are combined through the light emission portion and are emitted to the outside, and the light guiding member being configured to increase a width of an angle of emission of the image light emitted from the light emission portion. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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2. A virtual image display device, comprising:
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an image display device that forms image light; a projective optical system that allows the image light emitted from the image display device to be incident; and a light guiding member, comprising; a light guiding portion; a light incidence portion that allows the image light to be incident to the light guiding portion; and a light emission portion that emits the image light guided by the light guiding portion to the outside, and that makes the image light visible through the light emission portion, the light guiding portion having a first reflective surface and a second reflective surface that are disposed in parallel with each other and allow light to be guided through a substantially total reflection, the light incidence portion having a third reflective surface that makes a predetermined angle with respect to the first reflective surface, the light emission portion having a fourth reflective surface that makes a predetermined angle with respect to the first reflective surface, and the number of times of reflection of a first image light beam, emitted from a first partial region, which forms a first projection image in the image display device, in the light guiding portion, and the number of times of reflection of a second image light beam, emitted from a second partial region, which forms a second projection image in the image display device, different from the first partial region in regard to a confinement direction in which a return of an optical path due to reflection occurs at the time of light-guiding, in the light guiding portion, being different from each other. - View Dependent Claims (3)
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16. A virtual image display device, comprising:
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an image display device that emits a plurality of image light beams; a projective optical system that allows the image light emitted from the image display device to be incident; and a light guiding member, comprising; a light guiding portion; and a light incidence portion that allows the image light to be incident to the light guiding portion, and a light emission portion that emits the image light guided by the light guiding portion to the outside, and that makes the image light visible through the light emission portion, the light guiding portion having a first reflective surface and a second reflective surface that are disposed in parallel with each other and allow light to be guided through a substantially total reflection, the light incidence portion having a third reflective surface that defines an opening width and makes a predetermined angle with respect to the first reflective surface, the light emission portion having a fourth reflective surface that makes a predetermined angle with respect to the first reflective surface, each of the plurality of light beams being propagated in three different modes and substantially totally reflected at a different reflection angle such that a first reflection angle of the plurality of light beams is greater than a second reflection angle of the plurality of light beams, and the second reflection angle being greater than a third reflection angle of the plurality of light beams, and the light guiding member being configured to increase a width of an angle of emission of the image light emitted from the light emission portion. - View Dependent Claims (17)
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Specification