Invention Grant
- Patent Title: Ophthalmologic photography apparatus
- Patent Title (中): 眼科摄影器材
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Application No.: US13138215Application Date: 2009-08-26
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Publication No.: US09072467B2Publication Date: 2015-07-07
- Inventor: Takayoshi Suzuki
- Applicant: Takayoshi Suzuki
- Applicant Address: JP
- Assignee: KOWA COMPANY LTD.
- Current Assignee: KOWA COMPANY LTD.
- Current Assignee Address: JP
- Agency: Adams & Wilks
- Priority: JP2009-019888 20090130
- International Application: PCT/JP2009/064823 WO 20090826
- International Announcement: WO2010/087046 WO 20100805
- Main IPC: H04N13/02
- IPC: H04N13/02 ; A61B3/12 ; A61B3/13 ; A61B3/14

Abstract:
A light beam reflected from an ocular fundus is split into a pair of right and left light beams by a two-aperture stop disposed in a position conjugate with an anterior ocular segment of an eye to be examined. The pair of right and left ocular fundus images having a parallax is formed as intermediate images from the split light beams at the position of a photographic mask. The optical path of the pair of ocular fundus images formed as intermediate images is split by a pair of optical path splitting lenses disposed in a position substantially conjugate with the two-aperture stop. One ocular fundus image is re-formed on half of an imaging plane of an imaging element, and the other ocular fundus image is reformed separately on the other half of the imaging plane. With such a structure, two ocular fundus images for three dimensional viewing can be efficiently obtained without using a prism for splitting the optical path.
Public/Granted literature
- US20110273538A1 OPHTHALMOLOGIC PHOTOGRAPHY APPARATUS Public/Granted day:2011-11-10
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