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公开(公告)号：US08132915B2
公开(公告)日：2012-03-13
申请号：US11912263
申请日：2007-02-14
IPC分类号： A61B3/10
CPC分类号： A61B3/132 , A61B3/0008
摘要： A binocular indirect opthalmoscope has a light source for producing an illumination beam and an illumination mirror (7) for directing the illumination beam to an eye to be viewed. The opthalmoscope also has, viewing optics including left-hand and right-hand eyepieces (12,13) and an optical splitter (9,10) for directing light along left-hand and right-hand viewing paths to the two eyepieces. An aperture holder (20) is pivotally mounted in a frame (3,5,6) of the opthalmoscope and adjusts the size of the illumination beam, under the control of a manually rotatable control knob (24). The movement of the aperture holder is transmitted, by means of mechanical linkage, to a moveable carriage (15) on which is mounted both the optical splitter and the illumination mirror, so that when the user moves the control knob to adjust the size of the illumination beam the optical splitter and the illumination mirror are also adjusted in position with respect to the opthalmoscope frame.
摘要翻译： 双目间接眼镜具有用于产生照明光束的光源和用于将照明光束引导到眼睛以观看的照明镜（7）。 眼镜还具有观察光学元件，包括左眼和右眼目镜（12,13）和用于将光线沿着左眼和右眼观察路径引导到两个目镜的光分路器（9,10）。 光圈保持器（20）可枢转地安装在眼镜的框架（3,5,6）中，并且在手动旋转的控制旋钮（24）的控制下调节照明光束的尺寸。 孔保持器的运动通过机械连杆传递到安装有分光器和照明反射镜两者的可移动滑架（15），使得当用户移动控制旋钮以调整尺寸 光分路器和照明反射镜的照明光束也相对于眼镜框架调整到适当的位置。
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公开(公告)号：US07252381B2
公开(公告)日：2007-08-07
申请号：US10540297
申请日：2004-08-25
申请人： Clive Harrold Thomas Burrows , Kelvyn Church , Stephen Church , David Ernest Lane Freeman , James Robert Arnold Matthews
发明人： Clive Harrold Thomas Burrows , Kelvyn Church , Stephen Church , David Ernest Lane Freeman , James Robert Arnold Matthews
IPC分类号： A61B3/14
CPC分类号： A61B3/156
摘要： An ophthalmoscope has illuminating optics (10) for projecting a beam of light into an eye under examination and imaging optics (14) for creating an image of said eye for viewing by a user. The imaging optics comprises an objective lens system (16) and an eye piece lens system (20). Two corneal reflex stops (138 and 148) are positioned one on either side of the corneal image formed by the objective lens system. The stops block reflections from the cornea of the eye under examination over a range of distances of the ophthalmoscope from the eye. The use of the two corneal reflex stops results in the precise positioning of the ophthalmoscope relative to the eye under examination not being critical to the blocking of the corneal reflex.
摘要翻译： 检眼镜具有用于将光束投射到被检查的眼睛中的照明光学器件（10）和用于创建用于用户观看的所述眼睛的图像的成像光学器件（14）。 成像光学元件包括物镜系统（16）和眼镜透镜系统（20）。 两个角膜反射停止（138和148）位于由物镜系统形成的角膜图像的任一侧上。 止血块阻止了眼睛从眼睛的距离范围内的眼睛的角膜的反射。 使用两个角膜反射停止导致检眼镜相对于检查眼睛的精确定位不对阻塞角膜反射至关重要。
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公开(公告)号：US6149273A
公开(公告)日：2000-11-21
申请号：US393430
申请日：1999-09-10
摘要： An indirect ophthalmoscope is equipped with a camera (14) to enable the view seen by the user of the ophthalmoscope to be displayed. Light is reflected into the camera by a reflector such as a prism (16) which is preferably substantially co-planar with the ophthalmoscope's optical elements (through which the user sees an eye under examination). The prism (16) and camera (14) are centrally mounted on the ophthalmoscope through mounting means, such as a frame, which has adjustment means for adjusting the positions of the prism and camera relative to the ophthalmoscope so as to alter the position of the field of view of the camera relative to the ophthalmoscope's optical elements. The adjustment means help to ensure that the field of view of the camera, and hence the displayed image, corresponds to the view seen by the user of the ophthalmoscope. The camera, prism and frame may form part of an attachment which may be retrofitted to an existing ophthalmoscope.
摘要翻译： 间接检眼镜配备有照相机（14），以使得可以显示用户通过检眼镜看到的视图。 光通过诸如棱镜（16）的反射器反射到相机中，该棱镜优选地与检眼镜的光学元件大体共面（用户在其中看到检查眼睛）。 棱镜（16）和照相机（14）通过诸如框架的安装装置中心地安装在检眼镜上，该框架具有用于调节棱镜和照相机相对于检眼镜的位置的调节装置，以便改变位置 相机相对于检眼镜的光学元件的视场。 该调整装置有助于确保相机的视野以及因此显示的图像对应于用户使用检眼镜所看到的视图。 相机，棱镜和框架可以形成可以被改装到现有检眼镜的附件的一部分。
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公开(公告)号：US20120200690A1
公开(公告)日：2012-08-09
申请号：US13500129
申请日：2010-10-01
申请人： Adrian Carl Beasley
发明人： Adrian Carl Beasley
IPC分类号： H04N7/18
CPC分类号： A61B3/1208 , A61B3/145
摘要： An ophthalmic instrument for viewing an eye under examination, wherein the instrument includes image capture means (26) for capturing an image of said eye and data processing means (40, 42, 46) for converting said image into a computer readable file, wherein the instrument carries a memory (44, 200), which may be detachable, for storing said file for subsequent transfer to a computer.
摘要翻译： 一种用于观察检查眼睛的眼科仪器，其中所述仪器包括用于捕获所述眼睛图像的图像捕捉装置（26）和用于将所述图像转换成计算机可读文件的数据处理装置（40,42,46），其中， 仪器携带可拆卸的存储器（44,200），用于存储所述文件以便随后传送到计算机。
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公开(公告)号：US4834105A
公开(公告)日：1989-05-30
申请号：US118159
申请日：1987-11-09
IPC分类号： A61B3/16
CPC分类号： A61B3/165
摘要： A tonometer is described for measuring the intra-ocular pressure of an eye in which a pulse of fluid is projected towards the cornea of the eye to distort the corneal surface by the pressure of the pulse, the distortion in the corneal surface being detected by a change in the reflection of light directed onto the cornea. A fluid delivery system (36, 44, 48) leads to an outlet through which the fluid pulse is applied to the cornea, and a branch (54) leads to a pressure measuring chamber (52), containing a transducer (170) which produces an electrical signal whose value depends on the pressure in the branch. A flow restrictor is removably fitted in the branch (54) and signal processing means (176, 178, 180) (the gain and rise time of which are adjustable by (182) or (186)), is supplied with the output from the transducer. Adjustment of 182, and 186 enable the electrical signal output of the processing means to be adjusted, for calibration. Calibration of the instrument is achieved by selecting an appropriately dimensioned restrictor and by adjusting the gain, and where appropriate the time constant, of the signal processing means, so that the plot of a pressure-time signal curve of the processing means output corresponds to the pressure-time curve for such an instrument when set to operate in line with a clinical standard.
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公开(公告)号：US4724843A
公开(公告)日：1988-02-16
申请号：US866298
申请日：1986-05-23
申请人： John Fisher
发明人： John Fisher
IPC分类号： A61B3/16
CPC分类号： A61B3/165
摘要： A tonometer which comprises a casing adapted to be hand-held, said casing including an optical system (10 to 26) for forming a viewable image of the cornea of the eye (28), optical detecting means (32, 34A, 34B) for determining when the tonometer, which is by hand slowly moved around, is axially aligned with the cornea, means (40 to 58) for firing a controlled puff of air on to the cornea when a condition of stabilized alignment is determined, and circuitry responsive to the outputs of the optical detecting means for determining when a change in image contrast occurs due to applanation of the cornea, said puff firing means and said circuitry being adapted to measure the pressure at the eye when applanation is detected. The tonometer may take the form of a portable system in which at least some of the components are contained in a hand-held unit (100). Alternatively the tonometer may be bench-mounted.
摘要翻译： 一种眼压计，包括适于手持的壳体，所述外壳包括用于形成眼睛（28）的角膜的可见图像的光学系统（10至26）;光学检测装置（32,34A，34B），用于 确定手指缓慢移动的眼压计何时与角膜轴向对准，当确定稳定对准的情况时，用于将受控的空气喷射到角膜上的装置（40至58）以及响应于 所述光学检测装置的输出用于确定由于角膜的压平而产生的图像对比度的变化，所述抽吸点火装置和所述电路适于在检测到压扁时测量眼睛处的压力。 眼压计可以采用其中至少一些部件被包含在手持式单元（100）中的便携式系统的形式。 或者，眼压计可以是台式安装的。
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公开(公告)号：US4924867A
公开(公告)日：1990-05-15
申请号：US225718
申请日：1988-07-23
IPC分类号： A61B3/16
CPC分类号： A61B3/165
摘要： A tonometer for measuring the intra-ocular pressure of an eye in which a pulse of fluid is projected towards the cornea of the eye to distort the corneal surface by the pressure of the pulse, the distortion in the corneal surface being detected by a change in the reflection of light directed onto the cornea. A constant volume chamber forms part of the fluid delivery system, with an inlet by which fluid under pressure can be supplied to the chamber when a fluid pulse is required. A lens assembly is fixed in the chamber wall for directing light toward an eye under test and a tube extends coaxially through the lens assembly to protrude internally into the chamber, where it is closed off at the end but includes a plurality of apertures in the internally protruding wall section to permit the controlled passage of fluid from the chamber into the tube.
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