Reflective image display including a first mirror and a Fresnel mirror
AssigneeEastman Kodak Company
InventorRoy Y. Taylor, II
Life of this patent
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Abstract
An image display system is designed to provide a magnified presentation of the object for direct visual viewing with emphasis on low distortion and high apparent brightness. The image display system comprises two optical components: a concave Fresnel mirror surface and a second planar mirror surface, each coated with highly reflective material. Because there are two reflections in the optical path between the eye and the object, the presentation will be erect and right reading. The use of metallic coating will assure a high gain transfer of optical radiation from the object to the eye.
Claims16
A reflective image display for forming a viewable, virtual, right reading image of a planar object positioned at an object position, said display comprising:
- a first mirror;
- and
- a second, Fresnel mirror, said second mirror having converging power, an optical axis, and opposite edges, one of said edges being nearer the first mirror than the other edge and said optical axis being adjacent to said one edge, said first and second mirrors being positioned to receive light from the object, positioned at said object position, without having any intervening lens elements located therebetween, wherein said light is reflected off one mirror to the other mirror and then into the eye of a viewer to provide an erect magnified virtual image of said object to said viewer.
A reflective image display for forming a viewable, virtual, right reading image of a planar object positioned at an object position, said display comprising:
- a first mirror;
- and
- a second, Fresnel mirror, said second mirror having converging power, an optical axis, and opposite edges, one of said edges being nearer the first mirror than the other edge and said optical axis being adjacent to said one edge, said first and second mirrors being positioned to receive light from an object, positioned at said object position, wherein the light from said object impinges upon said Fresnel mirror without previously passing through a lens element, reflects off said Fresnel mirror towards said first mirror and then reflects from said first mirror towards the eye of a viewer to provide an erect magnified virtual image of said object to said viewer.
Dependencies are inferred from the claim text.