Nikon Corporation

Yoichi Iki

Seiho Yamashita

Kenji Yamada

Yutaka Sasaki

Nobuyuki Miyake

Yasunori Ueno

Izumi Umemura

Mikes Josef

Svoboda Miroslav

Sedlak Roman

Nobuyki Miyake

An object of the present invention is to provide a microscope system and an image processing method which are practical and capable of imaging a specimen efficiently in a short period of time and also ensuring reduction of the data amount of a generated image. Accordingly, the microscope system includes a storage sectionwhich stores identification information of a specimenA, a macro image and a micro image in a correlated manner, a stage memberon which the specimen as an observation target is mounted, an acquiring sectionB,which acquires identification information of the specimen, a first display sectionwhich displays a macro image of the specimen by reading a macro image correlated with the identification information from the storage section (or by imaging the specimen), a second display sectiontowhich displays a micro image of the specimen by imaging the specimen, and an additional storing sectionwhich additionally stores in the storage section in accordance with instruction from outside a micro image displayed on the second display section in a correlated manner with the macro image displayed on the first display section and the identification information acquired by the acquiring section.

Microscope system and image processing method used for observation of a specimen

An ophthalmic refractor is constructed to judge whether a visual acuity value of a symbol with a mask is minimum or maximum among values in a selected charts, select a chart containing a symbol indicating a visual acuity value smaller than the minimum visual acuity value when the visual acuity value is judged to be minimum, and select a chart containing a symbol indicating a visual acuity value larger than the maximum visual acuity value when the visual acuity value is judged to be maximum.

Ophthalmic refractor

An ophthalmologic device measures corneal curvature and ocular refractive power of the eye by imaging the positions of a plurality of bright points which result from plural light rays and by imaging a predetermined pattern of the eye. The ophthalmologic device includes a frame memory to store picture data of the eye which has been imaged by a video camera. The picture data in memory is classified into bright spot regions in which bright spots are present one at a time, a corneal reflected image region in which a reflected image from the cornea of a predetermined pattern is projected into the fundus of the eye, and mask regions in which the bright points and the corneal reflected image are not present. The picture data having a luminosity greater than a predetermined threshold value is stored for later calculation of a centroid of the bright points to measure the corneal curvature of the eye.

Ophthalmologic device having means for classifying the picture data in

An eye examination apparatus comprises an ultrasonic transmitter for transmitting ultrasonic wave radiation to an area around an eye to be examined, an ultrasonic receiver for receiving the reflected wave radiation of the ultrasonic wave radiation, and a judging device for judging whether the eye to be examined is the right eye or the left eye based on the result of the reception by the ultrasonic receiver.

Eye examination apparatus using ultrasonic wave radiation

An ophthalmologic apparatus comprises a measuring device for measuring an eye being examined, a display for displaying the result of the measurement by the measuring device, a counter for counting the number of times of measurement of the eye being examined with respect to each of the right and left eyes, and a display control device for causing the display to display the number of times of measurement of each of the right and left eyes counted by the counter.

Ophthalmologic apparatus

An eye measuring apparatus includes a refracting power detector for measuring the refracting power of an eye to be examined, a fogging producer for moving the position of a target image in the direction of the optical axis of the eye to be examined, and a feedback controller for receiving an output from the refracting power detector, and moving the position of the target image in a direction, in which accommodation of the eye to be examined is relaxed, in accordance with refracting power information measured in a predetermined meridian direction of the eye to be examined and astigmatic information of the eye to be examined obtained from refracting power values measured in a plurality of meridian directions of the eye to be examined.

Eye measuring apparatus having an automatic fogging producing mechanism

The apparatus radiates light onto an eye to be examined and picks up an image of the eye, which is irradiated with light. And then the apparatus compares image information obtained from the image pickup with a threshold determined in advance for the image information so as to store the image information larger than the threshold. The apparatus calculates a measured value of the eye to be examined on the basis of the stored image information.

Ophthalmologic apparatus detecting position of bright points on an eye

In an optical system a semitransparent mirror which is disposed at a predetermined angle with respect to an optical axis and which has a semitransparent surface (for instance, a front surface) and a transparent surface (for instance, a rear surface) is so designed as to split a diverging or converging light incident thereon into a first optical path of light flux reflected from the semitransparent surface and a second light path of light flux transmitted through both the semitransparent and transparent surfaces. Furthermore, in order that the position of an image focused by the light flux reflected from the transparent surface coincides with the position of an image focused by the light flux reflected from the semitransparent surface, the transparent surface is made non-parallel with the semitransparent surface of the semitransparent mirror. The thickness of the mirror decreases or increases toward image planes depending upon whether converging light flux or diverging light flux is incident on the mirror.

Growing community of inventors

Kawasaki, Japan

Yoichi Iki