摘要:
An interferometer comprises a wavelength-variable light source. A reference light and a measurement light are synthesized, and the synthesized light is split into a plurality of split lights. A certain phase difference is provided between the split lights through phase shifting optical members. A plurality of interference fringe images formed by the phase-shifted split lights are captured at an imaging unit. Biases, amplitudes and the amounts of phase shift of the interference fringes formed by the plurality of split lights are calculated, based on interference fringe intensities of the imaged interference fringes, which are obtained by disposing a calibrating substrate instead of the measuring object varying the wavelength of the emitted light to plural values, and operating the imaging unit to capture a plurality of images of interference fringes obtained by the split lights.
摘要:
A measuring apparatus comprising: a reference member held in fixed position and orientation with respect to a workpiece during measurement; a stylus for scanning a surface of the workpiece while being displaced upward and downward in accordance with unevenness of the surface of the workpiece; a displacement gauge for measuring a displacement of a specific part of the stylus relative to the reference member; and a scanner for causing the stylus to scan the workpiece along the surface; wherein the fixed position and orientation of the reference member with respect to the workpiece are not changed even during the operation of the scanner; the up-and-down displacement of the specific part of the stylus is measured relative to the reference member; a fine shape of the workpiece is detected in accordance with the measured displacement of the specific part of the stylus.
摘要:
In a phonograph record player having a tone arm carrying a pickup with a stylus to track the groove of a phonograph record on a turntable during a play operation and being mounted for lead-in movement from an elevated rest position outside the turntable perimeter to a selected set-down position of the stylus on the record for commencement of a play operation and for return or lead-out movement back to the rest position on termination of a play operation, a control mechanism is provided with a single mode selecting member or slide which is manually movable to positions for selecting stop, manual and repeat modes of operation, respectively, of the record player. More particularly, the manual mode selecting position of the slide and positions of the latter for selecting repeat modes of operation providing progressively increasing numbers of repeated play operations are arranged in order in the direction away from the stop mode position of the slide, and for each play operation of the record player the mode selecting slide is displaced in a step-wise manner toward its stop mode position. Further, at an extreme position of the mode selecting slide remote from the stop mode position, successive play operations are obtained without corresponding step-wise displacements of the slide so that the play operations are repeated indefinitely.
摘要:
A probe microscope includes a cantilever having a probe, a displacement detecting optical system, an observation optical system, an objective lens, and a parallel glass. The displacement detecting optical system includes a first light source and a light detecting element. The observation optical system includes a second light source, an image forming lens, and a camera. The objective lens is disposed between the cantilever and the first and second light sources, and is commonly used by the displacement detecting optical system and the observation optical system. The parallel glass is capable of being inserted and retracted freely between the cantilever and the objective lens to adjust a focal point of the objective lens.
摘要:
A sheet-supplying device has a sheet-accommodating tray, a raising/lowering unit, a first position sensor, a second position sensor, a controlling unit. The raising/lowering unit raises and lowers the sheet-accommodating tray substantially. The first position sensor detects a first position indicating a position in the stacked direction of one end portion of a topmost sheet stacked in the sheet-accommodating tray. The second position sensor detects a second position indicating a position in the stacked direction of another end portion of the topmost sheet. The controlling unit controls the raising/lowering unit to raise or lower the sheet-accommodating tray based on both the first position detected by the first position sensor and the second position detected by the second position sensor so that one end of the topmost sheet in the stacked status is positioned at a prescribed position in the stacked direction.
摘要:
To provide a ceramic metal halide lamp having a rated lamp wattage of not less than 450 W, which will not cause flicker due to instable arc during operating of the lamp and early blacking of an arc tube. In a metal halide lamp having a rated lamp wattage of greater than or equal to 450 W, which includes: a translucent ceramic arc tube enclosure including: a main tube inside which a discharge space is formed; and two narrow tubes having smaller diameter than the main tube, each connected to either end of the main tube; two electrodes; and a metal halide provided inside the arc tube enclosure, in which one of the two electrodes is disposed so that it protrudes inside the main tube from inside of one of the two narrow tubes, and the other one of the two electrodes is disposed so that it protrudes inside the main tube from the other one of the two narrow tubes, and when the rated lamp wattage is denoted by W (watt), an inside diameter of the main tube by D (mm), an electrode protruding length which is the distance from boundary between the main tube and the narrow tubes to an end of the electrode by L (mm), and the distance between ends of the two electrodes by E (mm), a bulb wall loading G (watt/cm2) represented by G=W/(3.14×D×E×0.01) falls within the range of 15≦G≦40, and a relationship 0.32≦L/D≦0.0003×W+0.465 is established.
摘要翻译:提供具有不小于450W的额定灯功率的陶瓷金属卤化物灯,其不会在灯操作期间由于不稳定的电弧和电弧管的早期黑化而引起闪烁。 在具有大于或等于450W的额定灯功率的金属卤化物灯中,其包括:半透明陶瓷电弧管外壳,包括:主管,其内形成有放电空间; 和两根细管,其直径小于主管,每根细管连接到主管的任一端; 两个电极 以及设置在所述电弧管外壳内的金属卤化物,其中所述两个电极中的一个设置成使得其从所述两个窄管中的一个的内部突出到所述主管的内部,并且所述两个电极中的另一个设置成使得 它从两个窄管中的另一个突出在主管内,当额定灯功率用W(瓦特)表示时,主管的内径为D(mm),电极突出长度为 从主管和窄管之间的距离到电极的端部的距离为L(mm),两个电极的端部之间的距离为E(mm),灯泡壁负载G(瓦/ cm 2)由 G = W /(3.14xDxEx 0.01)落在15≤G≤40的范围内,建立了关系0.32 <= L / D <= 0.0003×W + 0.465。
摘要:
A wavelength-variable light source is configured to emit a light with a wavelength (λ), which is variable within a scan width (Δλ). An interferometer has a coherent length (ΔL), which is determinable from (Δλ) and (λ). A controller determines an appropriate magnitude of the scan width (Δλ) while a CCD camera captures a fringe image in an exposure time (Te), which is set longer than a time for wavelength scanning.
摘要:
A sheet-supplying device has a sheet-accommodating tray, a raising/lowering unit, a first position sensor, a second position sensor, a controlling unit. The raising/lowering unit raises and lowers the sheet-accommodating tray substantially. The first position sensor detects a first position indicating a position in the stacked direction of one end portion of a topmost sheet stacked in the sheet-accommodating tray. The second position sensor detects a second position indicating a position in the stacked direction of another end portion of the topmost sheet. The controlling unit controls the raising/lowering unit to raise or lower the sheet-accommodating tray based on both the first position detected by the first position sensor and the second position detected by the second position sensor so that one end of the topmost sheet in the stacked status is positioned at a prescribed position in the stacked direction.
摘要:
A neural network learning system using back propagation and a method of learning pattern showing are disclosed. In the case where a supervised signal contains an error or a pattern difficult to learn, the error is detected and the particular pattern is automatically removed during calculations of learning iterations to conduct rightly and accelerate the learning. The learning history for each pattern is stored to detect inconsistent and difficult-to-learn patterns, which are prevented from being shown to the network by a pattern showing control during the next learning iteration. As a result, an inconsistent or difficult-to-learn pattern which may be contained in a learning pattern set of input and supervised patterns is removed during learning iterations thereby to permit early completion of the learning process.
摘要:
The oscillation wavelength of a variable wavelength laser is measured by using an optical comb, and a feedback control is performed, whereby laser beams of plural predetermined wavelengths are obtained, or a variable wavelength laser is caused to oscillate at plural arbitrary wavelengths to obtain plural distance measurement values. The wavelengths (frequencies) of laser beams when the respective distance measurement values are obtained are measured by the optical comb, and used in calculation of the geometric distance. Plural lasers are used, and the geometric distance is obtained while the wavelengths of laser beams oscillated from the lasers are measured by the optical comb.