Virtual image display device and optical unit
AssigneeSeiko Epson Corporation
InventorAtsushi SAITO
Life of this patent
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Abstract
A virtual image display device includes an imaging light generation device, and an optical unit including a concave transmission mirror provided with a partial reflection film, the optical unit being configured to form a virtual image with the imaging light emitted from the imaging light generation device, wherein the optical unit includes a reflection type diffraction element disposed on an external side of the partial reflection film, the reflection type diffraction element being configured to diffract the imaging light so that the imaging light is deviated from an optical path passing through the concave transmission mirror.
Claims16
A virtual image display device comprising:
- an imaging light generation device;
- and
- an optical unit including a concave transmission mirror provided with a partial reflection film, the optical unit being configured to form a virtual image with the imaging light emitted from the imaging light generation device, wherein
- the optical unit includes a reflection type diffraction element disposed on an external side of the partial reflection film, the reflection type diffraction element being configured to diffract the imaging light so that the imaging light is deviated from an optical path passing through the concave transmission mirror.
An optical unit including a concave transmission mirror provided with a partial reflection film, the optical unit being configured to form a virtual image with imaging light, the optical unit comprising
- a reflection type diffraction element disposed on an external side of the partial reflection film, the reflection type diffraction element being configured to diffract the imaging light so that the imaging light is deviated from an optical path passing through the concave transmission mirror.
Dependencies are inferred from the claim text.