Title:
眼底撮影装置
Document Type and Number:
Japanese Patent JP6776777
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an ocular fundus photographing apparatus comprising a new optical system which allows photographing a wide area of an ocular fundus.SOLUTION: An ocular fundus photographing apparatus 100 comprises: a scanning optical system 1 which has optical scanners 15, 27 for changing the traveling direction of light from light sources 11, 21 to scan an ocular fundus Er with the light; and an objective optical system 2 which is interposed between the optical scanners 15, 27 and a subject eye E to guide the light from the optical scanners 15, 27 to the ocular fundus Er, whereby the ocular fundus photographing apparatus forms an image of the ocular fundus Er based on the light reflected off the ocular fundus. The objective optical system 2 comprises: a first mirror 50 which reflects the light from the optical scanners 15, 27 to form a first rotation point r1 about which the light rotates in conjunction with the operation of the optical scanners 15, 27; and a second mirror 60 which further reflects the light reflected by the first mirror 50 to form a second rotation point r2 about which the light projected to the subject eye E rotates. The swing angle of the light incident to the first mirror 50 is smaller than the swing angle of the light at the second rotation point r2.SELECTED DRAWING: Figure 2
Inventors:
Joji Sasaki
Masaaki Hanebuchi
Masaaki Hanebuchi
Application Number:
JP2016194514A
Publication Date:
October 28, 2020
Filing Date:
September 30, 2016
Export Citation:
Assignee:
NIDEK CORPORATION
International Classes:
A61B3/10
Domestic Patent References:
| JP2009543585A | ||||
| JP3500137A | ||||
| JP2015033423A | ||||
| JP2013524978A | ||||
| JP2014217756A | ||||
| JP2000126133A |
Foreign References:
| WO2014053824A1 | ||||
| US20070030449 |