OPHTHALMOLOGIC APPARATUS

Japanese Patent JP2016054834

A

PROBLEM TO BE SOLVED: To provide an ophthalmologic apparatus comprising a plurality of optical systems for fundus imaging and anterior ocular segment imaging, but yet capable of correcting the astigmatism on an axis to obtain excellent optical performance.SOLUTION: The ophthalmologic apparatus comprises: four optical system, of first, second, third, and fourth optical systems; a first dichroic mirror DCM1 disposed eccentric from a subject's eye and separating the first optical system; a second dichroic mirror DCM2 guiding the light from the subject's eye via a positive lens, disposed eccentric with respect to the optical axis of the light from the subject's eye, and separating the second optical system; and a third dichroic mirror DCM3 disposed eccentric with respect to the optical axis of the light from the subject's eye, separating the third optical system by reflection, and separating the fourth optical system by transmission. The eccentric cross section of the second dichroic mirror and that of the third dichroic mirror are perpendicular to each other in positional relationship and are set with the same amount of eccentricity to correct the astigmatism.SELECTED DRAWING: Figure 1

WO/2016/039187	OPHTHALMIC IMAGING DEVICE AND OPHTHALMIC INFORMATION PROCESSING DEVICE
JP3549961	Optical Coherence Computed Tomography Corneal Mapping Device
JPS6363427	PHOTOELECTRIC POSITION DISPLAY APPARATUS

YAMAZAKI SHOICHI
MATSUMOTO KAZUHIRO
TOMATSU NORIHIRO

JP2014182290A

April 21, 2016

September 08, 2014

Click for automatic bibliography generation  

CANON KK

A61B3/10; A61B3/12; A61B3/14

JPH11137522A	1999-05-25
JPS6068333A	1985-04-18
JP2014079517A	2014-05-08
JP2007296209A	2007-11-15
JP2010131060A	2010-06-17

Okabe
Shinichi Usui
Takao Ochi
Seiichiro Takahashi
Koji Yoshizawa
Masami Saito
Katsuhiko Kimura
Naofumi Tanaka

Previous Patent: A manufacturing method of a washing machine and a washing machine

Next Patent: Electric rice-cooker