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US 5,214,458 AGranted
Display apparatus
AssigneeMatsubara Kenki Kogyo Kabushiki Kaisha
InventorHiromi Kanai
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AssigneeMatsubara Kenki Kogyo Kabushiki Kaisha
InventorHiromi Kanai
Estimating the term…
In order to provide a display apparatus which can express projected images of small characters, illustrations or the like in not only the daytime or an illuminated bright place, but also the nighttime in the case where brightness is deficient, besides which can be used in not only the outdoors, but also the inside of a dark room, the present display apparatus comprises a mirror Fresnel lens, an original picture for projection positioned over the surface of the mirror Fresnel lens, and a projection mechanism positioned on the surface side of the mirror Fresnel lens and at the same time, disposed so as to emit light on the surface of the mirror Fresnel lens, further the light emitted from the projection mechanism being reflected by the mirror Fresnel lens to project an image of the original picture for projection on a prescribed plane of projection.
A display apparatus comprising a mirror Fresnel lens;
In the inside of a desk-lamp provided with a light source for illumination and a cover for covering around said light source, a display apparatus comprising a mirror Fresnel lens;
Dependencies are inferred from the claim text.