Fundus camera having scanned illumination and pupil tracking

Details Fundus camera having scanned illumination and pupil tracking Fundus camera having scanned illumination and pupil tracking

2007-11-20

2007-11-20

Dang, Hung X. (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S208000, C351S209000, C351S210000, C351S220000, C600S452000, C396S018000

Reexamination Certificate

active

10947018

ABSTRACT:
An apparatus (100) for obtaining an image of the eye, has an alignment section (160) for aligning the pupil of the eye along an optical axis and a pupil sensor (170) for identifying pupil location and dimensions. An illumination section (112) has a light source (114) for providing an illumination beam and a spatial light modulator (125) for positioning and shaping the illumination beam according to the sensed location and dimensions of the pupil. An illumination beam partitioning mechanism (50) segments the illumination beam directed toward the pupil of the eye into at least one light-bearing segment (150) and at least one blocked segment. An actuator (132) coupled to the illumination beam partitioning mechanism (50) scans the at least one light-bearing segment (150) of the illumination beam across the pupil of the eye. An image sensor (146), aligned along the optical axis, obtains reflected light from the eye.

REFERENCES:
patent: 4838680 (1989-06-01), Nunokawa
patent: 5572266 (1996-11-01), Ohtsuka
patent: 5713047 (1998-01-01), Kohayakawa
patent: 5943116 (1999-08-01), Zeimer
patent: 6546198 (2003-04-01), Ohtsuka
patent: 6636696 (2003-10-01), Saito
patent: 7001019 (2006-02-01), Takagi et al.
patent: 2001/0024178 (2001-09-01), Takeuchi et al.
patent: 2002/0051118 (2002-05-01), Takagi et al.

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