Method and device for generating retinal images using the...

Details Method and device for generating retinal images using the... Method and device for generating retinal images using the...

2005-02-09

2009-12-29

Mai, Huy K (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C359S630000, C359S631000, C345S007000

Reexamination Certificate

active

07637617

ABSTRACT:
A method for generating retinal images using the stigmatism of the two foci (F, F′) of a substantially elliptical sight (E) with a semi-reflective surface, wherein a so-called object focus consisting of the diaphragm of a pinhole disc forming the convergence point of an image generated by a light-emitting display or a collimated light source is positioned adjacent to the first focus (F) of the substantially elliptical sight (E), a so-called image focus consisting of the pupil or the centre of the user's eye (OE) is positioned adjacent to the second focus (F′) of said substantially elliptical sight (E), and the image generated by said light-emitting display or said collimated light source and reflected by the semi-reflective surface of the substantially elliptical sight (E) is projected adjacent to the retina of the user's eye.

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patent: 5867134 (1999-02-01), Alvelda et al.
patent: 6252565 (2001-06-01), Hall
patent: 2001/0010598 (2001-08-01), Aritake et al.
patent: 02136816 (1990-05-01), None

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