Canon Kabushiki Kaisha

Hideyuki Ooban

Hiroshi Itoh

Yasuhiro Nakahara

Tomoyuki Iwanaga

Satoshi Aikawa

Toshifumi Masaki

An ophthalmologic imaging apparatus that captures an image of a subject's eye is provided. The apparatus includes a focusing unit configured to focus light returned from the subject's eye that is illuminated by the light of a first wavelength, onto an imaging unit, and a moving unit configured to move the focusing unit based on an optical path length difference between the light of the first wavelength and the light of a second wavelength that is different from the first wavelength when light returned from the subject's eye that is illuminated by the light of the second wavelength is focused onto the imaging unit.

Ophthalmologic imaging apparatus and ophthalmologic imaging method

When an observation state by an infrared LEDis changed to a photographing state by a xenon lamp, a movable mirroris pulled upward and an optical path is switched to an image sensorside. A light guideis shifted by an alignment index drive motorso that an incident portion of an alignment index is shifted from a visible LEDto direct to an infrared LED. An outgoing portion of the light guideis set at a position where an image is formed on the image sensorby a wavelength of the infrared LEDwhen an operation distance is appropriate. While changing a luminescent color, a position of a luminescent point of the alignment index is changed by switching the LED by the shift of the light guide

Ophthalmologic photographing apparatus

An opthalmologic apparatus changes the wavelength of index light, which is projected on an eye to be examined, by selecting the light emission of a visible LED and an infrared LED, and changes the position of a split unit along an optical axis based on the selection.

Growing community of inventors

Kawaguchi, Japan

Hideyuki Ooban