EXTENDED DEPTH OF FIELD OPTICS WITH VARIABLE PUPIL DIAMETER

Apparatus and methods to increase the depth of field in human vision in order to correct for loss in refocusing ability. Optics variations, such as changes in thickness, shape, or index of refraction of contact lenses, intraocular implants, or the shape of the cornea or eye lens, affect the phase, o...

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Bibliographische Detailangaben
Hauptverfasser:	CORMACK, ROBERT H, CATHEY, W. THOMAS, JR
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CONTACT LENSES DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PHYSICS PROSTHESES SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	Apparatus and methods to increase the depth of field in human vision in order to correct for loss in refocusing ability. Optics variations, such as changes in thickness, shape, or index of refraction of contact lenses, intraocular implants, or the shape of the cornea or eye lens, affect the phase, or wavefront, of the light perceived by the eye. The optics variations are chosen such that the resulting optical transfer function remains relatively constant over a desired range of object distances and pupil diameters.