Optical elements and combiner optical systems and image-display units comprising same
First Claim
1. An optical element, comprising:
- a plane substrate having a surface and an interior through which a specified light flux can propagate; and
an optical-function unit situated in close contact with the surface of the plane substrate, the optical-function unit being reachable by the propagating specified light flux, the optical-function unit being configured to have interfering or diffracting actions that reflects the specified light flux and transmits an external light flux reaching the surface.
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Abstract
Light-propagating optical elements are disclosed that have an internal-reflection and a see-through feature not damaged even if a member higher in refractive index than the surrounding medium is brought into in close contact with the surface thereof. An optical element includes a substrate having an interior in which a specified light flux propagates, and an optical-function unit in close contact with the surface of the substrate. Thus, the propagating specified light flux can reach the optical element. The optical-function unit has interfering or diffracting actions that reflects the specified light flux and transmits an external light flux reaching the surface. The optical element, when used, can be or constitute a combiner optical system that can provide functions such as diopter correction. An image-display unit that can be easily mounted can function to provide the diopter correction.
369 Citations
23 Claims
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1. An optical element, comprising:
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a plane substrate having a surface and an interior through which a specified light flux can propagate; and
an optical-function unit situated in close contact with the surface of the plane substrate, the optical-function unit being reachable by the propagating specified light flux, the optical-function unit being configured to have interfering or diffracting actions that reflects the specified light flux and transmits an external light flux reaching the surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification