Canon Kabushiki Kaisha

Tetsuji Ogawa

Takeshi Kitamura

Kazuhiro Matsumoto

Hiroshi Nishihara

Takashi Masuda

Motoya Takai

Shigeaki Ono

A plurality of sensed images of an eye to be examined and a plurality of time information at image sensing are acquired. A plurality of information correlate with image, each of which including at least the time information, at the image sensing are acquired. A group of the images of the eye to be examined and a group of the information correlate with image sensing are correlated with each other based on the time information at the image sensing and the time information included in the information correlate with image sensing, thereby recording an image of the eye to be examined and information correlate with image sensing which are correlated with each other.

Ophthalmologic image recording apparatus, ophthalmologic image recording method, and ophthalmologic image recording program

An ophthalmologic apparatus includes alignment driving means for aligning an examinee's eye, detecting means for detecting an alignment state of the examinee's eye, and alignment controlling means for controlling the alignment driving means based on the result detected by the detecting means. The alignment controlling means includes determining means for determining a quality of the result detected by the detecting means and counting means for counting outputs from the determining means within a predetermined period of time. The alignment controlling means performs interruption processing or warning processing of the alignment control based on the output of the counting means.

Ophthalmologic apparatus

In an ophthalmologic image pickup apparatus for taking an eye fundus image of an eye to be examined, when an image pickup switch is operated, it is detected whether an image pickup delay switch is operated or not. When it is detected that the image pickup delay switch is operated, light emission of a strobe light source and image pickup of the eye fundus by an image pickup device are delayed. Thus, error image pickup due to nictitation is prevented. Also, when nictitation is detected by a nictitation detector, image pickup of the eye fundus may be similarly delayed.

Ophthalmologic apparatus and control method thereof

The present invention relates to an ophthalmologic phototaking apparatus having an illuminating system for illuminating an eye to be examined, a phototaking system for phototaking the image of the eye to be examined illuminated by the illuminating system, a digital signal converting system for converting the image of the eye to be examined phototaken by the phototaking system into a first data format of digital image data, and a data format converting system for converting the first data format of digital image data into a second data format of digital image data.

Ophthalmologic phototaking apparatus

A photographing switch is pressed to start a photographing operation. All detected image information is input as digital data into an image memory. An image processing section detects the highest and lowest luminance values with respect to a set area. An ophthalmogical photographing apparatus sets a signal compression ratio of digital signals based on these highest and lowest luminance values so that a high-gradation image which is primarily required for diagnostic purposes is obtained.

Ophthalmogical photographing apparatus

An apparatus for phototaking the image of an eye to be examined has an image pickup element for picking up the image of the eye to be examined, a first signal converting system for converting an image signal from the image pickup element into a signal for animated picture display, a second signal converting system for converting the image signal from the image pickup element into a digital image signal, and an image pickup element drive system for executing the drive systems of the image pickup element corresponding to the first and second signal converting systems.

Apparatus for phototaking the image of an eye comprising systems for

An ophthalmic photographing apparatus has photographing device for directing the image of an eye to be examined obtained by illuminating the eye to be examined with a predetermined photographing light amount to a recording medium or an image pickup element, a detector for detecting information about the kind and/or sensitivity of the recording medium or the image pickup element into which the image of the eye to be examined is introduced, a photographing light amount correction input device for inputting the correction condition of a photographing light amount, and controller for varying at least one of the correction width and the correction stage of the photographing light amount correction condition inputted by the photographing light amount correction input device on the basis of the result of the detection by the detector. With at least one of the correction width and the correction stage set by the control means, the photographing light amount by the photographing device is controlled on the basis of the input correction condition by the photographing light amount correction input device.

Growing community of inventors

Tochigi, Japan

Tetsuji Ogawa