Abstract: An ophthalmic apparatus which allows a patient to experience a manner of view after surgery (after correction) prior to surgery (prior to correction) and is capable of obtaining information required for performing refractive surgery suitable for the patient. The apparatus, which allows a patient to experience a manner of view after correction of optical aberration of a patient's eye, includes a target presenting optical system for presenting a target which the patient's eye is made to visually recognize, an aberration correcting optical system, which is arranged within an optical path of the target presenting optical system and has a light shaping optical unit which performs light shaping, for correcting the optical aberration of the patient's eye, an input unit which inputs data for correcting the optical aberration of the patient's eye, and a control unit which controls driving of the aberration correcting optical system based on the inputted correction data.

Abstract: A zoom lens comprises, in order from an object side to an image side, a lens group having negative refracting power, and a lens group having positive refracting power. Zooming is carried out with a change in a space between at least said two lens groups. The lens group having negative refracting power comprises a plurality of aspheric surfaces. The lens group having positive refracting power comprises at least one aspherie surface. The lens group having negative refracting power comprises at least three negative lenses, with satisfaction of the following condition: 2.3<|f2/f1<3.1, where f1 is a focal length of said lens group having negative refracting power, and f2 is a focal length of said lens group having positive refracting power.

Abstract: In an optometric apparatus of the present invention, optometric apparatus bodies 5l and 5r independently driven in right-and-left and up-and-down directions for optometry of an examinee 4, respectively, are provided on both sides of a face receiving device 6.

Abstract: Off-axis projection optics that includes first and second mirrors positioned off-axis and sharing a confocal point that are arranged to reduce linear astigmatism. If a distance between an object plane and the first mirror is l1, an incident angle of light coming from the object plane to the first mirror is i1, a distance between the first mirror and the confocal point is l1?, a distance between the confocal point and the second mirror is l2, an incident angle of light coming from the first mirror to the second mirror is i2, and a distance between the second mirror and an image plane is l2?, the off-axis projection optics may satisfy the following equation: l 1 ? + l 1 l 1 ? tan ? ? i 1 = l 2 ? + l 2 l 2 ? tan ? ? i 2 .

Abstract: A fundus photography apparatus is provided that enables optimal adjustment of exposure values according to the color characteristics of the anterior ocular segment of the subject eye. The fundus photography apparatus comprises means for photographing the anterior ocular segment of the eye, means for photographing the eye fundus, and means for detecting the spectral distribution of the iris of the eye based on images of the anterior ocular segment. The photographic exposure value is adjusted in preparation for fudus photography based on the detected spectral distribution of the iris.

Abstract: A multiple group variable focal length lens is provided. The lens has a first lens group including a variable power lens element and is positioned in a stationary manner along an optical axis. The lens also has a second lens group moveably positioned along the optical axis. The variable power lens element can be an electrically controllable liquid lens having a surface with a variable radius of curvature created by two liquids having distinct indices of refraction with one of the liquids having an index of refraction greater than 1.60. Alternatively or additionally, at least one of the liquids used in the liquid lens can include nanoscale particles.

Abstract: A DSP, which has a through electrode and is stacked to a wiring substrate through an adhesive part, a solid-state image pickup element, which is stacked to the DSP through an adhesive part and has a through electrode and an effective pixel area, and a translucent lid part, which is placed to face the effective pixel area and bonded to the solid-state image pickup element through an adhesive part, are stored in an optical path defining unit with a lens for defining an optical path to the effective pixel area, and the translucent lid part is coupled to the optical path defining unit by a coupling part.

Abstract: A method of forming an inorganic alignment film on a base substrate is provided comprising forming a film made substantially of an inorganic material on the base substrate, and irradiating ion beams onto the surface of the film from a direction inclined at a predetermined angle ?b with respect to the direction vertical to the surface. By irradiating the ion beams onto the film, concave portions having a predetermined directivity are formed on the film. The predetermined angle ?b is preferably 2° or more.

Abstract: An eye's optical characteristics measuring system, comprising a target projecting means for projecting a target image on a fundus of an eye under test, a photodetecting means for guiding the target image toward a photoelectric detector, a pupil diameter measuring means, a calculating means for calculating optical characteristics of the eye under test according to distribution of optical intensity obtained based on an image acquired by the photoelectric detector, and an aperture selecting means provided on each of the target projecting means and the photodetecting means, wherein the aperture selecting means is independently driven, and apertures to restrict a projecting luminous flux and a photodetecting luminous flux are selected based on a pupil diameter of the eye under test measured by the pupil diameter measuring means.

Abstract: A light filtering apparatus includes a first dispersion device, a spatial filter and a second dispersion device. The first dispersion device is arranged to cause spatial dispersion of an incident light beam as a function of its frequency. The spatial filter is arranged to filter the dispersed light beam so as to produce a spatially filtered resultant beam. The second dispersion device is arranged to recombine the dispersed and filtered light beam so as to produce an output light beam having a substantially similar spectrum at any position within the output beam cross-section.

Abstract: The present eye activity monitoring system includes a monitoring apparatus for acquiring the eye image of a user in a closed eye state and an image-processing apparatus for generating an alarm signal based on the eye image. The monitoring apparatus includes an eye mask, an image-sensing unit positioned on the eye mask, a control circuit electrically connected to the image-sensing unit, a transmitting module electrically connected to the control circuit, an antenna electrically connected to the transmitting module and at least on power supply positioned on the eye mask. The image-processing apparatus has a receiving module and an image-processing module. The image-processing module judges the eye status according to the acquired feature of the eye image, and sends a warning alarm to trigger the warning device when an abnormal event occurs.

Abstract: Device for measuring aberrations in an eye includes, an illumination path with an illumination diaphragm and a test path, imaging member and elements for positioning the eye in relation to the imaging member, a stray reflection filter element, which is centered on the measurement axis of the imaging member, and elements for the optical conjugation of the pupil of the eye with the plane of the illumination diaphragm and the test plane. The illumination beam path converges at the center of the filtration element. The filtration element, the illumination path, the test path and the conjugation elements are all interdependent and positioned on a platform that can move in relation to the imaging member along the axis. The illumination diaphragm is off-center in relation to the axis such that stray light flux reflected by the imaging member is deflected from the test path by filtration element.

Abstract: An optical apparatus includes a light-quantity-adjusting unit, a first lens unit disposed closer to an object than the light-quantity-adjusting unit, a second lens unit disposed closer to an image plane than the light-quantity-adjusting unit, and a drive unit for driving the first lens unit and the second lens unit in an orthogonal-to-optical-axis direction.

Abstract: Providing a zoom lens system having a high zoom ratio, a small diameter of the first lens group, capable of being effectively retracted upon retracting the lens barrel. The system includes, in order from an object, a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having positive refractive power, and a fifth lens group having positive refractive power. When zooming from a wide-angle end state to a telephoto end state, the first, second, third, and fourth lens groups move along an optical axis and the second lens group moves along a zoom trajectory being concave to the object. The fourth lens group is composed of a front lens group having positive power and a rear lens group having negative power with a space in between. Given conditional expressions are satisfied.

Abstract: An electronic imaging device is provided which includes a first lens group which takes in a luminous flux from a subject along a first optical axis, an optical axis conversion member which bends the luminous flux along a second optical axis which intersects with the first optical axis, a second lens which images the bent luminous flux to an imaging element, and an optical amount adjustment unit provided between the second lens group and the optical axis conversion member. An AF motor, a driving unit which drives the optical amount adjustment unit, and a zoom motor are each selectively arranged at one of four spaces formed by a first plane defined by the optical amount adjustment unit and a second plane defined by the first and second optical axes. The AF motor, the driving unit, and the zoom motor may all be arranged at one side of the second plane.

Abstract: There is provided an ophthalmologic apparatus which can be effectively used for the clinic of a dry eye by using, as a basic principle, that when a tear film dries up, a corneal shape is changed and/or a wavefront aberration becomes large. When a measurement is started, the ophthalmologic apparatus is aligned. An arithmetic part performs an initial setting of a measurement interval of the apparatus, a measurement time and the like by a wavefront measurement part. An input part or the arithmetic part triggers a measurement start, and the arithmetic part repeats a measurement of the corneal shape and corneal wavefront aberrations by a measurement part until time reaches a measurement end time. When the time reaches the measurement end time, a judgment part analyzes a breakup state as one index for judgment of a state of a dry eye. The judgment part obtains values relating to the breakup to output them, and performs an automatic diagnosis about dry eye on the basis of the values.

Abstract: An electrowetting module (20) comprises a fluid chamber (8) which contains a first fluid (A) and a second fluid (B), which are separated by an interface (14) , and means (16, 17) to exert a force on at least one of the fluids to change the position and/or shape of the interface. By providing the second fluid body with a dissolved or mixed compound, being insoluble in or immiscible with the first fluid body, and/or the first fluid body comprises a dissolved or mixed compound being insoluble in or immiscible with the second fluid body, in amounts sufficient for lowering the freezing point of the respective fluids to below ?20° C., the performance of the module can be improved so that the module can be used at low temperatures.

Abstract: A two-unit zoom lens system which comprises a negative first lens unit G1 and a positive second lens unit G2, during change of magnification from a wide-angle end to a telephoto end, the first lens unit and the second lens unit are moved so as to reduce a space between the first lens unit and the second lens unit, the first lens unit includes a negative sub-unit G1a and a positive sub-unit G1b, the second lens unit has a first positive lens L21, a second negative lens L22, and a third positive lens L23, and the system further has an aperture stop S disposed in an air space which comes into contact with the first positive lens L21.

Abstract: A lens unit in which at least one of a subject side lens group and an image side lens group is moved toward an image side to be retracted along an optical axial direction, including a subject side lens group supporting frame to support the subject side lens group, an image side lens group supporting frame to support the image side lens group, a guide member to guide the image side lens group supporting frame from a predetermined position on the subject side to the image side by a predetermined length in parallel to an optical axis, and a moving and displacing device to move the image side lens group supporting frame from the predetermined position on the subject side to the image side by length longer than the predetermined length in parallel to the optical axis, and displace the image side lens group supporting frame from an optical path.

Abstract: An objective (2) with at least one optical element (4), which is mounted in an inner ring (3). The inner ring (3) is connected to an outer mount (1). A manipulator (10) is provided for displacing the optical element (4) in at least a direction perpendicular to an optical axis. The inner ring (3) is connected to the outer mount (1) by means of at least two adjusting joints (5) with manipulators (10) and at least one swivel joint (6). The at least two adjusting joints (5) and the at least one swivel joint (6) are provided with joint arms (8) extending at least approximately in a tangential direction with respect to the inner ring (3), by means of which arms the inner ring (3) is elastically connected to the outer mount (1).