DEVICE FOR MEASURING OPTICAL CHARACTERISTIC OF EYE

摘要

The position of an object surface is detected with an error reduced on a reflectance boundary surface. A first light source 100 emits the luminous flux of the first wavelength. A first illumination optical system 200A illuminates a small area on a retina 61 to be examined by the first luminous flux from the first light source 100. A first reception optical system 300A guides a part of the luminous flux which is reflected by and returning from the retina 61 to be examined to a first light reception part 510 via a first conversion member 400 for converting the reflected luminous flux into at least 17 beams. A second light source 110 emits the luminous flux of the second wavelength. A second illumination optical system 200B illuminates a predetermined area on the retina 61 to be examined by the second luminous flux from the second light source 110. A second reception optical system 300B guides the second luminous flux reflected by and returning from the retina 61 to a second light reception part 520. A display part checks at which position on the fundus oculi 61 of the eye 60 the luminous flux for measurement is converged or fixed, and the position of convergence and the position of measurement are changed by using a drive unit to move a fixation mark or the irradiation position of the irradiation light for Hartmann measurement.