摘要:
An eye-examining apparatus comprises a first positive lens unit, a negative lens unit, a second positive lens unit, a third positive lens unit and a target mark arranged in the named order from the side of the examined eye. The third positive lens unit is mounted movably along the optical axis. Between the first and second positive lens units there is interposed on astigmatic system rotatable about the optical axis. The negative lens unit, the second positive lens unit and the third positive lens unit are so arranged as to form an image of the mark at a position near the focal point on the target mark side of the first lens unit. The focal point on the examined eye of the composite system composed of the negative lens unit, the second positive lens unit and the third positive lens unit is approximately coincident with the position conjugate with the pupil of the examined eye relative to the first positive lens unit. The diopter of the apparatus is changed by moving the third positive lens unit and the change of the axis and degree of astigmatism are achieved by rotating the astigmatism system.
摘要:
An apparatus which comprises a collimating lens, light source means for selectively forming light sources in two positions on the optical axis of the collimating lens, means for defining the position of the lens to be inspected opposite to the light source with respect to the collimating lens, a mask plate having translucent or opaque areas symmetrical to the optical axis, a relay lens for placing the mask plate at a position conjugate with the lens position, an imaging lens positioned opposite to the mask plate with respect to the relay lens, and photoelectric converting means for producing image signals corresponding to the positions, in a plane perpendicular to the optical axis, of the image of the translucent or opaque areas of the mask plate formed by the imaging lens.
摘要:
In an apparatus for measuring the optical characteristics of an optical system to be examined a light source determines a reference optical axis and generates a light beam that is passed through the optical system to be examined along the reference optical axis. A mask partly transmits the light beam therethrough and has a pattern comprising at least one straight line disposed off the reference optical axis in the light beam, the straight line of the pattern extending in a predetermined direction in a plane substantially orthogonal to the reference optical axis. A photosensitive detector receives the light beam passed through the optical system to be examined and the mask. The detector is fixedly disposed relative to the mask and has a substantial length in a direction substantially orthogonal to the reference optical axis and the straight line of the pattern. The detector produces an electrical signal indicative of the position of the pattern of the mask projected onto the detector in the direction of the length of the detector. A rotator provides relative rotation about the reference optical axis between the light beam passed through the optical system to be examined and the mask. A signal processor processes the electrical signal and finds the refractive characteristic of the optical system to be examined. -
摘要:
An air supplying apparatus comprises, an air intake channel, one end of which is opened to the atmosphere, the other end of which is connected to a cylinder and in which an air stream flowing toward the cylinder is provided, a throttle valve provided in the other end side portion of the air intake channel, movable between a first position where the throttle valve sets the cross-sectional area of the air stream minimum and a second position where the throttle valve sets the same maximum, thereby controlling the output power of the engine, a control valve provided in one end side portion of the first channel, movable between a third position where the control valve closes the air intake channel and a fourth position where the control valve opens the air intake channel, a control channel attached to the air intake channel to by-pass the control valve, a supercharger provided in the control channel, a link mechanism connecting the throttle valve to the control valve, to move the control valve from the fourth position to the third position when the throttle valve moves from the first position to the second position, and to move the control valve from the third position to the fourth position when the throttle valve moves from the second position to the first position, and play mechanism attached to the link mechanism, for allowing one of the throttle and control valves to move when the other valve is held at a fixed position.
摘要:
A remote management system is configured so that a management system remote manages a device through an intermediary device. The management system includes a protocol specifying unit configured to specify a protocol to establish connection between the intermediary device and the device, a priority specifying unit configured to specify priority order of a plurality of the protocols, and a request generating unit configured to generate a request including the protocol and the priority order. The intermediary device includes a communication control unit configured to establish connection between the intermediary device and the device by using the protocols included in the request in descending order of the priority order.
摘要:
A motor control system includes: a converter; two inverters; two alternating-current motors; and a control unit. The control unit is configured to control the system voltage by feedback of a current phase of a current vector of motor current of each of the motors on a d-q coordinate plane so that rectangular wave control of at least one of the first and second motors is performed in a state where the current phase is an optimal current phase, wherein the control unit selects, as a subject of the feedback, the current phase of one of the motors that is larger than the other motor in system voltage deviation obtained based on the current vector.
摘要:
Provided are a sintered ceramic and a ceramic sphere which are inhibited from suffering surface peeling due to fatigue resulting from repetitions of loading and can attain an improvement in dimensional accuracy when subjected to surface processing and which have excellent wear resistance and durability.
摘要:
There are provided a processing liquid for suppressing pattern collapse of a fine metal structure, containing at least one member selected from an imidazolium halide having an alkyl group containing 12, 14 or 16 carbon atoms, a pyridinium halide having an alkyl group containing 14 or 16 carbon atoms, an ammonium halide having an alkyl group containing 14, 16 or 18 carbon atoms, a betaine compound having an alkyl group containing 12, 14 or 16 carbon atoms, and an amine oxide compound having an alkyl group containing 14, 16 or 18 carbon atoms, and a method for producing a fine metal structure using the same.
摘要:
A motor control system includes: a power supply; a converter; an inverter; an alternating-current motor; and a control unit that drives the motor in any one of sinusoidal PWM control, overmodulation control and rectangular wave control through operation control of the converter and the inverter. The control unit starts step-up operation of the converter when a current vector of motor current of the motor on a d-q coordinate plane becomes a current phase corresponding to motor torque, at which a system loss is equal between before and after starting the step-up operation, while the control unit supplies the direct-current voltage, supplied from the power supply, to the inverter without stepping up the direct-current voltage by the converter and performs the rectangular wave control of the motor in a state where the current phase is an optimal current phase.
摘要:
Provided is a novel electrochromic compound that is excellent in oxidation-reduction repetition and highly transparent when bleached and does not show optical absorption in the visible light region.The compound is an organic compound represented by General Formula [1] shown in Claim 1. In the General Formula [1], A and A′ are each independently selected from hydrogen atoms, alkyl groups, alkoxy groups, and aryl groups, wherein at least one of A and A′ is selected from the alkyl groups, the alkoxy groups, and the aryl groups.R1 and R2 independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aryl group, an aralkyl group, an amino group, or a silyl group; and n represents 1 or 2.
摘要翻译:提供了一种新型的电致变色化合物,其在氧化还原重复性优异且漂白时高度透明,并且在可见光区域中不显示光吸收。 该化合物是权利要求1所述的通式[1]表示的有机化合物。在通式[1]中,A和A'各自独立地选自氢原子,烷基,烷氧基和芳基,其中在 A和A'中的至少一个选自烷基,烷氧基和芳基。 R 1和R 2独立地表示氢原子,卤素原子,烷基,烷氧基,芳基,芳烷基,氨基或甲硅烷基。 n表示1或2。