发明申请
- 专利标题: Hand held device and methods for examining a patient's retina
- 专利标题(中): 用于检查患者视网膜的手持装置和方法
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申请号: US11053491申请日: 2005-02-07
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公开(公告)号: US20060146284A1公开(公告)日: 2006-07-06
- 发明人: William Collins , Robert Levine
- 申请人: William Collins , Robert Levine
- 主分类号: A61B3/10
- IPC分类号: A61B3/10
摘要:
A hand held device for examining a patient's retina. In one example, the device generates visible or non-visible illuminating beams having desired spectral content. The illuminating beams are then polarized to generate polarized light beam(s) that are directed towards the patient's retina. At the patient's eye, a portion of the polarized beam is partially reflected by the cornea and travels back to the device, and another portion of the polarized beam enters the eye through the undilated pupil, illuminates the patient's retina, and generates a reflected retinal image (generally de-polarized) which also travels back to the device. The device receives the retinal image and transmits certain portions of the retinal image on through to an image detector (i.e., CCD or CMOS); and the device deflects the received polarized corneal reflections away from the image capture device. Hence, the image capture device receives retinal images but does not receive the polarized corneal reflected light.
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