摘要:
A light-projecting device comprises an ocular optical system facing an emergent opening of a hollow pentagonal mirror. A light source is provided outside the emergent opening, to output an illumination light beam, by which a superimpose-plate is illuminated so that a focusing mark formed on the superimpose-plate is radiated. A light-projecting prism is provided beside the ocular optical system, to reflect the illumination light beam output from the light source, toward the emergent opening. The optical axis, extending between the light source and the light-projecting prism, is approximately parallel to the plane of the emergent opening.
摘要:
A real-image finder optical system includes a positive objective optical system, an erecting optical system, and a positive eyepiece optical system, thereby an object image, which is formed by the objective optical system, and is upside down and reversed from left to right, is reinverted by the erecting optical system to the proper orientation. The erecting optical system includes a plurality of reflection surfaces, at least one of which is provided along an optical path on the object side with respect to the position where the object image is formed, and at least another of which is provided along an optical path on the eyepiece side with respect to the position where the object image is formed. The eyepiece optical system includes a positive lens element having a transverse magnification of more than 1.0 provided between the object image (finder image) and the reflection surface provided on the eyepiece side with respect to the position where the object image is formed.
摘要:
An apparatus for use in a storage device having at least two clusters, each including a disk control device having a plurality of channel controllers that send and receive commands and data to and from an upper system, a plurality of disk controllers that control disk units, and a cache that temporarily stores data between the upper system and the disk units. The apparatus includes a first bus included in a first cluster. The first bus is connected to the channel controller, the disk controller and the cache of the first cluster. A second bus is included in a second cluster. The second bus is connected to the channel controller, the disk controller and the cache of the second cluster. A common resource is connected to the first bus of the first cluster and the second bus of the second cluster. The common resource includes a specified set of data which is commonly accessible from each of the channel controllers or the disk controllers of the clusters.
摘要:
A cemented lens group includes two lens elements, cementing surfaces of the two lens elements being cemented to each other by an adhesive, wherein the adhesive forms an adhesive layer between the cementing surfaces. A filler made of minute solid material is dispersed throughout the adhesive layer. Alternatively, a spacer which determines the thickness of the adhesive layer is provided around the peripheral portions of the cementing surfaces.
摘要:
A discharge gas containing PFC gas including CF4 and NF3 generated from a manufacturing process (10) is adsorbed at an adsorbing device (18) and then desorbed using nitrogen as a purge gas. A desorbed gas with CF4 and NF3 concentrated can be obtained in this manner. The desorbed gas is then supplied to a chromatographic separator (20) for chromatographic separation with nitrogen as a carrier gas. In this manner, CF4 and NF3 within the PFC gas can be separated. In particular, because the gas is once concentrated at the adsorbing device (18), chromatographic separation of the gas constituents can be efficiently performed. By independently concentrating CF4 and NF3 obtained by the chromatographic separation, high purity gas constituents of the PFC gas can be obtained, and reused at the manufacturing process (10).
摘要:
A viewing optical instrument includes a main barrel which supports an objective optical system, a movable member for focus adjustment which is supported by the main barrel to be movable along an optical axis of the objective optical system relative to the main barrel, a focusing mechanism which drives the movable member along the optical axis, a focus knob which actuates the focusing mechanism, an auxiliary unit provided separately from the viewing optical instrument including an auxiliary mechanism which is associated with the focusing mechanism when the auxiliary unit is connected to the viewing optical instrument, and a connecting device for detachably attaching the auxiliary unit to the viewing optical instrument.
摘要:
In this power output apparatus, an operation line lower in torque than the maximum torque line is adopted as a reference operation line for moving the motor operating point along the reference operation line in a steady state, and for controlling the motor operating point such that the power output from the motor becomes the required power by increasing the motor torque while substantially maintaining the motor rotation speed irrespective of the reference operation line when the power required of the motor increases. Therefore, according to this power output apparatus, even when the power required of the motor increases suddenly, the motor torque increases without increasing the motor rotation speed and the power output from the motor becomes equal to the required power immediately.
摘要:
A diffractive-refractive achromatic lens that has a positive resultant power includes a refractive lens system and a positive diffractive grating. The refractive lens system is provided with a positive lens having relatively small dispersion, a negative lens having relatively large dispersion and an additional refractive lens. The additional refractive lens is a positive lens. The refractive lens system exhibits longitudinal chromatic aberration that is substantially proportional to wavelength such that the back focus of the refractive lens system decreases as the wavelength becomes shorter. The positive diffractive grating corrects the longitudinal chromatic aberration of the refractive lens system. The condition 0.005
摘要:
An apparatus for measuring weight of a substance placed within a substrate space which is subjected to sever conditions, including a measuring unit having a transducer and placed within a measuring space, a partition member provided between the measuring space and the substance space and having hole through which said measuring space is communicated with said substance space, a rod-like member extending through said hole formed in the partition member such that a first end of said force transferring member situates within said substance space and a second end of said force transferring member situates within said measuring space, a parallel link mechanism arranged within the measuring space and connected with the rod-like member, a magnetic fluid provided in a space within said hole such that said substance space and measuring space is isolated from each other in a liquid tight manner by means of said magnetic fluid, and a magnetic force generating unit producing a magnetic force such that said magnetic fluid is kept in position by said magnetic force.
摘要:
A telescopic objective lens system comprises a positive first lens group and a second lens group, in this order from the object. The second lens group comprises a first sub-lens group and a second sub-lens group, wherein the first sub-lens group is combined with the first lens group to be used for correcting axial chromatic aberration, the second sub-lens group is combined with the first lens group to be used for correcting field curvature; and wherein the combination of the first lens group and the first sub-lens group, and the combination of the first lens group and the second sub-lens group can be alternatively selected.