Abstract: In a developing apparatus of the present invention, a voltage applying circuit applies a developing bias voltage obtained by superimposing a DC component on an AC component to the developer carrying member. A bias voltage controller controls the voltage of the DC component based on at least one of a voltage range between the highest and lowest voltages of a waveform of the developing bias voltage and the ratio of time during which the waveform has a value higher or lower than a reference voltage to one period of the AC component. The reference voltage is set so that an area occupied by a portion of the waveform of the developing bias voltage in which the developing bias voltage has a value higher than the reference voltage is equal to an area occupied by a portion of the waveform in which the developing bias voltage has a value lower than the reference voltage.

Abstract: The invention relates to an optometric apparatus which is capable of easily confirming the appearance of a target for near use in a state of correction for far use.

Abstract: An optometric apparatus designed to ensure that measurement results can be readily confirmed before they are printed out, and to prevent the deletion of data due to an erroneous operation of a switch. The optometric apparatus having examining device for examining the visual function of an eye to be examined, comprising: memory for storing data on examination by the examining device; display device having a display screen for displaying the examination data; printing device for printing the examination data stored in the memory; a print switch for inputting a signal for printing the examination data to the printing device; display control circuit for displaying the examination data on the display device on the basis of the signal from the print switch; confirmation-signal generating switch for generating a confirmation signal for confirming the absence of an abnormality in the examination data; and commanding circuit for commanding the printing device to effect printing on the basis of the confirmation signal.

Abstract: The optometric apparatus desinged to reduce the number of switches for operating the apparatus and facilitate the switch operation of the apparatus, thereby allowing the examiner to conduct the examination efficiently.

Abstract: An ophthalmic apparatus comprises an optical unit for changing-over and disposing optical elements having various kinds of optical characteristics to an inspection window, holding device for holding the optical unit, gyrating device for making the holding device gyrate between an evacuation position and an inspection position, vertical motive device for making the holding device move vertically, and locking device for preventing electromagnetically the holding device from working.

Abstract: An ophthalmic apparatus for obtaining a refractive corrected power based on a refractive power that an eye to be examined has, the apparatus comprises input device for inputting data of objective values obtained by measuring objectively the refractive power of the eye to be examined and information of adjustment factors for adjusting a corrected power, program storing device for storing a program in order to adjust the corrected power against the data of objective values based on the data inputted by the input device and for expecting a prescribed power, executing device for executing the program stored in the program storing device, prescribed power calculating device for calculating an expected-prescribed power in response to the program executed by the executing device, and displaying device for displaying the expected-prescribed power calculated by the prescribed power calculating device.

Abstract: An ophthalmic apparatus providing a subjective refractive power measuring device for respectively placing optical elements in inspection windows and inspecting refractive powers of eyes to be examined, on a subjective basis, an object indicating device for presenting an object to each eye to be examined, an optometry program designing device for designing an optometry program for activating each of the subjective refractive power measuring device and the object indicating device, and a program executing device for executing the optometry program.

Abstract: A visual function examination apparatus, comprising an optotype presenting device for presenting optotypes for use in examinations of visual functions of examinee's eyes, for examining visual functions of the eyes by delivering luminous flux via reflecting system from the optotype presenting device, wherein the optotype presenting device is provided with optotypes for examinations to be carried out as the examinee opens his both eyes, the optotypes having polarizing plates, and a binocular fixation target which should become fusion impulse to binocular vision is disposed around the optotypes for examinations.

Abstract: An ophthalmic apparatus for inspecting visual functions of eyes to be examined, providing an optical unit having ophthalmic windows, for respectively placing optical elements in the ophthalmic windows by switching, an object indicating unit for presenting an object to each eye to be examined, a display device having an operation screen for operating the object indicating unit and the optical unit, a program storing device for storing therein programs for controlling the display device, the programs having a common numeric value switching area for effecting the switching between numeric values for respective inspecting items such as a spherical degree, an astigmatic degree and an astigmatic axis, and displaying an operation screen displaying an object presented by the object indicating unit and an input screen inputting reference data for inspecting the eyes to be examined within the numeric value switching area, an input device for inputting an operation command through the use of the operation screen of the

Abstract: To obtain a washing machine capable of sanitarily effecting washing with fresh water at all times and reducing a washing time and a drying time. Tap water supplied from a water feed pipe in association with sensing means is pressurized to predetermined pressure by a pressurizing pump, supplied to water injection nozzle pipes and injected into a washing space through water injection nozzles. The user inserts tableware held by hands between the nozzles, energising the sensor mechanism. A high speed water flow injected from the nozzles collides against the tableware and washes the tableware by removing stubborn dirt from the tableware. On the other hand, an air flow from a blower passes though the air nozzle pipes and is discharged from the air nozzles to remove the drops of water attached to the tableware by forced air action.

Abstract: An apparatus for visual acuity test of an examinee's eye comprises test chart presenting device for changing and presenting test chart to the examinee's eye, a switch for designating test chart to be presented by the test chart presenting means, a light delivery optical system for delivering luminous flux of test chart from the test chart presenting means to the examinee's eye, the light delivery optical system comprising a concave mirror for making the luminous flux of test chart optically from 4 m ahead of the examinee to infinit and a first reflection mirror for reflecting the luminous flux reflected the concave mirror to the examinee's eye, and reflecting angle adjusting device for adjusting reflection angle of the reflection mirror so as to fit to a height of the examinee's eye, a housing for internally mounting the test chart presenting means and the light delivery optical system, the housing having an aperture to allow the luminous flux of test chart pass therethrough and the aperture being provided wi

Abstract: An optometric apparatus includes an operating table and a vision test chart displaying device provided internally within the operating table. An optical group, including a plurality of reflection-type optical elements, are disposed within the operating table. The optical group repeatedly reflects an optical image of the vision test chart projected from the vision test chart displaying device along an optical path within said operating table. A first deflecting optical element reflects the optical image of the vision test chart reflected by the reflection-type optical element group outside the operating table in a first direction. A second deflecting optical element then reflects the optical image of the vision test chart reflected by the first deflecting optical element in a second direction toward the examinee's eyes.

Abstract: Lens measurement apparatus provides a holding device for holding a lens to be measured at a designated position, a first index projecting optical system for projecting a first refractive power measuring index onto the lens, a second index projecting optical system for projecting a second radius of curvature measuring index onto the concave surface thereof. A refractive power and a radius of curvature are obtained by arranging a light splitting member on the optical path of the first index luminous flux, or by moving a photoelectric detecting element for detecting each position of the first index and the second index along with the optical axis.

Abstract: An apparatus for visual acuity testing by presenting visual test charts to an examinee by utilizing an electro-optic effect, the apparatus comprising a test charts displaying device in which test charts of a same kind are arranged in each chart line per visual acuity value and constitute a plurality of test chart lines, and test charts in different kind of test chart line individually arranged in a space between test charts in at least a test chart line, and a kind of test charts to be displayed on the test chart displaying device is selected by a selecting device.

Abstract: An apparatus for measuring a corneal shape includes a projecting device projecting a set of point sources, which are substantially on a same circle, onto a cornea. A detecting optical system defects the positions of the point sources projected onto the cornea by the projecting device. A selecting device selects a plurality of the corneal reflection images detected by the detecting optical system, each of which consists of at least 3 points forming a part of the circle. A calculating device obtains a part of the corneal shape by presuming an ellipse containing the points of each selected group in the corneal reflection images. A displaying device displays the corneal shape based on the results obtained by the calculating device.

Abstract: An apparatus for producing a numerical control program, which uses a unit motion pattern icon. A menu memory unit stores a menu of unit motion patterns corresponding to subdivided machine motions, a task memory unit for storing process programs for converting each unit motion pattern to each numerical control program; a display unit for displaying the menu of the unit motions; a task controller for reading the corresponding process program, outputting a parameter guidance corresponding to the unit motion pattern, and converting the unit motion to the corresponding numerical control program; and input unit for appointing a unit motion patterns and inputting a parameter; and NC program file for storing the numerical control program.

Abstract: A format converting system includes a first converter which converts an input signal into N parallel signals (N is an integer). Each of the N parallel signals has a bit rate less than that of the input signal. A latch circuit temporarily latches the N parallel signals in accordance with a clock signal and outputs a plurality of latched signals having a number larger than the N. A selector selectively outputs the latched signals from the latch circuit and stuff bits to be inserted in the N parallel signals in accordance with a control signal so that N parallel output signals having the N parallel signal and the stuff bits are output from the selector. The stuff bits are used for converting a frame format of the input signal into a different frame format.

Abstract: A NC system which is provided with a three-dimensional automatic programming function which comprises a shape data input unit which can input various kinds of shape data including free surfaces, a shape extraction process which obtains a distance from arbitrary position data corresponding to a function which represents a shape in a real space as well as a parametric space for conducting set operations with object structure data on said shape, and a tool path generating unit which generates a trace of a tool base upon the whole shape data inputted from said shape extraction processor.

Abstract: In a method for manufacturing a cathode ray tube, a bulb is held by a first holding mechanism. An electron gun is inserted and held in a neck portion of the bulb by a second holding mechanism. Then, the neck portion and a stem of the electron gun are welded by a welding unit. The unit includes an annular burner having an inner surface with a plurality of burner holes formed in substantially the entire area along a circumferential direction thereof. The annular burner is constructed by two burner members which can be separated in a radial direction. The burner is positioned by an opening/closing mechanism and a reciprocating mechanism such that the inner peripheral surface of the burner is coaxially located outside the neck portion and opposes the stem of the electron gun. Thereafter, the neck portion is heated by flames injected from the burner holes, and then the burner is reciprocally rotated about its axis through a predetermined angle.