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1. 发明专利

DE3878123D1 未知
公开(公告)号：DE3878123D1
公开(公告)日：1993-03-18
申请号：DE3878123
申请日：1988-09-28
申请人： CANON KK
发明人： NAKAMURA YUKITSUGU , HAMANO YOSHIMASA , MASUDA TAKASHI , MATSUMURA ISAO , MARUYAMA SHIGEO , KOBAYASHI KAZUNOBU
IPC分类号： A61B3/15 , A61B8/10
摘要： An ophthalmologic apparatus can measure the eye axis length of an eye to be examined and other information of the eye to be examined (for example, the cornea refractive power). In the case of the measurement of the eye axis length, when moving a detecting terminal itself by driving means, the driving means is controlled so as to slow down the speed of movement of the detecting terminal when the detecting terminal comes near the cornea of the eye to be examined.

2. 发明专利

DE3852985D1 未知
公开(公告)号：DE3852985D1
公开(公告)日：1995-03-23
申请号：DE3852985
申请日：1988-11-02
申请人： CANON KK
发明人： MATSUMURA ISAO , MASUDA TAKASHI , HAMANO YOSHIMASA , MARUYAMA SHIGEO , NAKAMURA YUKITSUGU , KOBAYASHI KAZUNOBU
IPC分类号： A61B3/16 , A61B8/10
摘要： A supersonic ophthalmic measuring apparatus is provided with a supersonic probe (19) for contacting with the cornea (E1) of an eye to be examined, calculating means (11) for calculating the amount of depression (X) of the cornea of the eye to be examined caused by the supersonic probe, and correcting means for correcting the result of the measurement of the eye axis length of the eye to be examined by the supersonic probe by said amount of depression.

3. 发明专利

DE3878123T2 未知
公开(公告)号：DE3878123T2
公开(公告)日：1993-06-17
申请号：DE3878123
申请日：1988-09-28
申请人： CANON KK
发明人： NAKAMURA YUKITSUGU , HAMANO YOSHIMASA , MASUDA TAKASHI , MATSUMURA ISAO , MARUYAMA SHIGEO , KOBAYASHI KAZUNOBU
IPC分类号： A61B3/15 , A61B8/10
摘要： An ophthalmologic apparatus can measure the eye axis length of an eye to be examined and other information of the eye to be examined (for example, the cornea refractive power). In the case of the measurement of the eye axis length, when moving a detecting terminal itself by driving means, the driving means is controlled so as to slow down the speed of movement of the detecting terminal when the detecting terminal comes near the cornea of the eye to be examined.

4. 发明专利

DE3852985T2 未知
公开(公告)号：DE3852985T2
公开(公告)日：1995-06-14
申请号：DE3852985
申请日：1988-11-02
申请人： CANON KK
发明人： MATSUMURA ISAO , MASUDA TAKASHI , HAMANO YOSHIMASA , MARUYAMA SHIGEO , NAKAMURA YUKITSUGU , KOBAYASHI KAZUNOBU
IPC分类号： A61B3/16 , A61B8/10
摘要： A supersonic ophthalmic measuring apparatus is provided with a supersonic probe (19) for contacting with the cornea (E1) of an eye to be examined, calculating means (11) for calculating the amount of depression (X) of the cornea of the eye to be examined caused by the supersonic probe, and correcting means for correcting the result of the measurement of the eye axis length of the eye to be examined by the supersonic probe by said amount of depression.

5. 发明专利

DE3031822A1 Ophthalmoscope with automatic focussing system - has data processing for data from photosensors monitoring light reflected from retina, and position sensors of drive motor 未知
公开(公告)号：DE3031822A1
公开(公告)日：1981-03-12
申请号：DE3031822
申请日：1980-08-22
申请人： CANON KK
发明人： SAKANE TOSHIO , KOBAYASHI KAZUNOBU , KOHAYAKAWA YOSHIMI , MADATE HARUHISA
IPC分类号： A61B3/14 , A61B3/10
摘要： Automatic focussing of this ophthalmoscope is achieved by a mechanical system which is controlled by the output of a data processing system. The data is provided by light sensors monitoring a light pattern reflected by the retina. Three projection systems are thereby focussed simultaneously. An observation system including a TV-camera and TV-monitor, a photographic system and an illumination system. The light receiving system includes photosensors which sense the focussed light pattern reflected by the retina. Data from the light sensors and from position sensors of the driving motor which operates the mechanism are processed in a data processing circuit.

6. 发明专利

DE2828405A1 未知
公开(公告)号：DE2828405A1
公开(公告)日：1979-01-11
申请号：DE2828405
申请日：1978-06-28
申请人： CANON KK
发明人： OHTA SHINICHI , KOBAYASHI KAZUNOBU , MADATE HARUHISA , YOKOHAMA KANAGAWA
IPC分类号： A61B3/10 , A61B8/10 , G01S15/89
摘要： An eye examining instrument comprises an ultrasonic wave generating source, reflecting members and a receiver. A concave reflecting mirror is provided to direct the generated ultrasonic waves in the direction along the optical axis of the objective lens of the instrument while converging the waves. Also, a concave reflecting mirror is provided to converge the ultrasonic waves reflected upon the cornea of the eye under test and examination into the receiver. The ultrasonic waves received by the receiver are transformed into an electric signal. The electric signal thus produced includes a component informing of the time required to receive the ultrasonic waves after the generation thereof and a component informing of the intensity of the received ultrasonic waves. The time component signal is compared with a reference signal representative of a predetermined working distance between the objective lens and the eye whereas the intensity component signal is compared with a reference signal representative of the alignment of the objective lens with the eye.

7. 发明专利

DE2707788A1 Ophthalmoscope for eye photography - with reflector between objective and image forming lens and may include several target surfaces 未知
公开(公告)号：DE2707788A1
公开(公告)日：1977-08-25
申请号：DE2707788
申请日：1977-02-23
申请人： CANON KK
发明人： MATSUMURA ISAO , OHTA SHINICHI , KOBAYASHI KAZUNOBU , MADATE HARUHISA , YOKOHAMA KANAGAWA
IPC分类号： A61B3/14
摘要： Ophthalmoscope for observation or photography of the fundus of the eye comprises a reflective element (9) which is disposed between an objective (10) and an image-forming lens (12) for conducting light required for illuminating the fundus (Ef). A device (20, 21, 23) for guiding the line of vision of the person being tested is located within a place which is virtually in conjugate relationship to the fundus, allowing the person to observe a suitable point in this plane according to the wish of the tester. The device may be movable within its plane, consisting of a light source and transmissive plate, or it may comprise several target surfaces, with a reflector (13) between it and the reflective element.

8. 发明专利

JPH06245907A OPHTHALMOLOGIC EXAMINING DEVICE 失效
公开(公告)号：JPH06245907A
公开(公告)日：1994-09-06
申请号：JP6319393
申请日：1993-02-26
申请人： CANON KK
发明人： UCHIDA KOJI , KOBAYASHI KAZUNOBU
IPC分类号： A61B3/10
摘要： PURPOSE:To constitute a device so that an examine himself can confirm a measuring state. CONSTITUTION:On an optical path 01 being in front of an eye E to be examined, an optical filter 2 for allowing infrared rays to transmit through, a hollow noise 1, perforated glass 3, a chamber 4 which becomes an air reservoir of an ophthalmic pressure system, a dichroic mirror 5, an objective lens 6, a half mirror 7, a dichroic mirror 8, and a lens 6 are provided successively, and reach a television camera 10 connected to a video signal synthesizing part 11. In the reflecting direction of the dichroic mirror 5, a light source 15 for confirming the alignment is provided, and also, on an optical path 02 in the reflecting direction of the dichroic mirror 8, an alignment measuring optical system is provided. In the reflecting direction of the half mirror 7, a liquid crystal monitor 16 connected to the video signal synthesizing part 11 is provided. On the liquid crystal monitor 16, a front eye part image picked up by the television camera 10, an alignment mark and a measured value, etc., are displayed, and become a help at the time when an examinee himself executes the alignment.

9. 发明专利

JPH06189905A OPHTHALMOLOGIC OPTICAL MEASURING DEVICE 失效
公开(公告)号：JPH06189905A
公开(公告)日：1994-07-12
申请号：JP35960892
申请日：1992-12-24
申请人： CANON KK
发明人： KOBAYAKAWA YOSHI , KOBAYASHI KAZUNOBU
IPC分类号： A61B3/10 , A61B3/103 , A61B3/107 , G01B11/24 , G01B11/245 , G01B11/255
摘要： PURPOSE:To measure the radius of curvature of the cornea and the refracting power of a tested lens. CONSTITUTION:The light fluxes from cornea measuring light sources 21a, 21b are once formed as a light source image on the cornea Ec of an examined eye E, and the reflected light flux is divided in the orthogonal direction by a half mirror 17 to be respectively projected as four cornea reflected images on line array sensors 13, 15. In a signal processor 22, the photo detecting positions of eight in total cornea reflected images are analyzed to obtain the refracting power and curvature of the cornea Ec including the astigmatism. The light flux from a lens measuring light source 1 is passed through an examined lens G and four opening parts of a diaphragm 5 and divided in two directions by a half mirror 2 to be respectively formed as four linear lens transmitted light flux images on line array sensors 13, 15. In a signal processor 22, the photo detecting positions of eight in total linear lens transmitted light flux images are analyzed to obtain the refracting power of the examined lens G.

10. 发明专利

JPH0647003A OPHTHALMOLOGIC DEVICE 失效
公开(公告)号：JPH0647003A
公开(公告)日：1994-02-22
申请号：JP36064092
申请日：1992-12-29
申请人： CANON KK
发明人： KOBAYAKAWA YOSHI , KOBAYASHI KAZUNOBU
IPC分类号： A61B3/10 , A61B3/14 , A61B3/16
摘要： PURPOSE:To prevent the device from becoming large in size, and to compound a tonometer and other ophthalmologic device without spoiling functionality and operability. CONSTITUTION:A luminous flux from an intraocular pressure measuring light source 17 passes through an objective lens 5, and the inside of a nozzle 6 and is projected to the cornea Ec of an eye E to be examined. The reflected luminous flux by the cornea Ec is photodetected as a cornea-reflected image by a photodetector 16. Compressed air is exhausted to the cornea Ec from a nozzle 8, and the cornea Ec is pressed flatly. From pressure in a cylinder 26 at the time point when an output of the photodetector 15 becomes maximum, intraocular pressure is measured. At the time of photographing a fundus oculi, a pressure measuring unit 25 is rotated centering around a pivot 29, and saved from an optical path L1. A luminous flux from an eye ground illuminating light source 1 is projected to the fundus oculi Er of the eye E to be examined, and a reflected luminous flux by the fundus oculi Er is reflected by a spring-up mirror 10, and photographed as an image of fundus oculi by a video camera 20. Also, when the spring-up mirror 10 is retreated from the optical path, the image of fundus oculi is photographed on a film 11.

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