JP2010233801A5 - - Google Patents

Claims (17)

An imaging light source that emits visible light;
Driving means for driving the focus lens in the optical axis direction of the optical path;
Acquisition means for acquiring values representing a plurality of focus states while driving the focus lens based on return light from the eye to be examined illuminated by the visible light;
An ophthalmologic apparatus comprising: Based on return light from the eye to be examined illuminated by the visible light, and having an imaging means for acquiring a plurality of fundus images of the eye to be examined while driving the focus lens;
The ophthalmologic apparatus according to claim 1, wherein the acquisition unit acquires values representing the plurality of focus states based on predetermined frequency component values in the plurality of fundus images. Drive control means for controlling the drive means to drive the focus lens to a position on the optical axis of the optical path corresponding to any one of the values representing the plurality of focus states;
The imaging device acquires a still image of the eye to be inspected based on return light from the eye to be inspected illuminated with the visible light after driving the focus lens to the position. The ophthalmic device described. Having light source control means for controlling the imaging light source so as to repeatedly emit the visible light in synchronization with an imaging cycle of the imaging means;
The image pickup unit acquires the plurality of fundus images while driving the focus lens based on return light from the eye to be examined that has been repeatedly illuminated with the visible light. Ophthalmic equipment. An observation light source that emits stationary light for acquiring a moving image observation image of the eye to be examined;
The light source control means controls the imaging light source to repeatedly emit the visible light when the position adjustment on the optical axis of the optical path of the focus lens is completed by the moving image observation image. Item 5. The ophthalmic apparatus according to Item 4. The stationary light is infrared light;
The imaging means acquires the moving image observation image,
The ophthalmic apparatus according to claim 5, wherein the light source control unit turns off the infrared light when the position adjustment on the optical axis of the optical path of the focus lens is completed by the moving image observation image. . Reflecting means that is detachably provided in the optical path and reflects the return light;
An insertion / removal control means for detaching the reflection means from the optical path when the position adjustment on the optical axis of the optical path of the focus lens is completed by the moving image observation image;
The ophthalmic apparatus according to claim 5, wherein the ophthalmic apparatus is provided. The image pickup control means for lowering the sensitivity of the image pickup means when the position adjustment of the focus lens on the optical axis of the focus lens is completed by the moving image observation image. The ophthalmic apparatus according to item. Operating means for moving an optical part provided with the imaging light source, the observation light source, the focus lens, and the driving means with respect to the eye to be examined;
A determination unit that determines that the position adjustment is completed when a switch provided in the operation unit is pressed;
The ophthalmologic apparatus according to claim 5, comprising: The ophthalmologic apparatus according to claim 5, wherein the photographing light source and the observation light source are a common white LED light source . The ophthalmologic apparatus according to claim 5, further comprising a display control unit configured to display on the display unit the moving image observation image and a display form indicating the amount of the steady light. Counting means for counting the number of times the visible light is repeatedly emitted from the imaging light source;
The ophthalmologic apparatus according to any one of claims 3 to 11, wherein the drive control unit repeatedly drives the focus lens by a predetermined amount and continues the driving until the number of times reaches a predetermined number. The values representing the plurality of focus states are contrast evaluation values of the plurality of fundus images,
13. The ophthalmologic apparatus according to claim 2, wherein the acquisition unit repeatedly drives the focus lens by a predetermined amount and acquires the contrast evaluation value for each predetermined amount. Acquiring a plurality of fundus images of the eye to be examined by an imaging unit while driving a focus lens based on return light from the eye to be illuminated illuminated with visible light; and
Acquiring values representing a plurality of focus states based on values of predetermined frequency components in each of the plurality of fundus images;
A method for controlling an ophthalmic apparatus, comprising: In the step of obtaining the plurality of fundus images, the plurality of fundus oculi are driven while driving the focus lens based on return light from the eye to be repeatedly illuminated with the visible light in synchronization with an imaging cycle of the imaging unit. The method for controlling an ophthalmologic apparatus according to claim 14, wherein an image is acquired. Driving the focus lens to a position on the optical axis of the optical path corresponding to any one of the values representing the plurality of focus states;
Obtaining a still image of the subject eye based on return light from the subject eye illuminated with the visible light after driving the focus lens to the position;
16. The method for controlling an ophthalmologic apparatus according to claim 14 or 15, wherein: A program for causing a computer to execute each step of the method for controlling an ophthalmologic apparatus according to any one of claims 14 to 16.