An electro-dynamic shaker and a pendulum system which has a resonant frequency lower than the lower limit of the frequency band of ordinary floor vibrations are fixedly mounted on a base plate. The pendulum system comprises a pendulum, damper and a differential transformer for detecting the relative displacement between the pendulum and the output shaft of the shaker. The detected relative displacement is compared in a control device with an input signal, the difference obtained by the compariso...

An imaging apparatus achieves a high-speed automatic focus operation and a reduction in power consumption and prevents a miss focus due to an erroneous determination. The imaging apparatus has an automatic focus function, which detects a current position of a focal lens. A limited range near the detected current position of the focal lens is designated as a focus range. A movable range of the focal lens is changed in accordance with the designated focus range.

A digital still camera for facilitating selection of a result as most intended by a photographer from among one set of photographed image data photographed in autobracket (AB) photographing, including a reproduction device which reproduces an image to reflect the photographer's intention. When recording in a memory card one set of photographed image data photographed in the AB photographing mode, a microcomputer renders the image data photographed in the AB photographing mode distinguishable, wh...

A digital camera (1) has an outside light AF and a contrast type AF which is capable of selecting either outside light AF or contrast type AF based on a command for an operation by a photographer, and has a photographing mode which carries out a focusing by the contrast type AF even when the outside light AF is selected by the command for the operation by the photographer.

An imaging apparatus includes an imaging device to photograph an object and to convert an image of the object into an electronic image signal, a feature detection device to conduct a feature detection for a white balance control in accordance with the image signal, a white balance control device to conduct the white balance control by using a result of the feature detection device, a zoom area selection device to select the zoom area of the image signal in accordance with the imaging device, a d...

An imaging apparatus including: an imaging device; a focusing operation control; and a decision control for comparing an evaluation value obtained from present image data with an evaluation value obtained from last image data obtained when the focus system leans was located at focal position in a last focusing operation and for deciding whether or not a focused state where the focus system lens is focused is maintained, according to a focusing instruction manipulation before performing the focus...

Two components can be positioned relative to each other and adhesively bonded together without any displacement resulting from contraction of the adhesive by forming on the first component 11 an annular protrusion 11A having its center at a point to be aligned. On the second component 12 is formed an annular groove 12A having its center at a corresponding point to be aligned. The width of the groove is significantly larger than the width of the protrusion. The protrusion is aligned within the gr...

A diffraction grating is set between a light source and a fly-eye lens composed of a plurality of lens elements rectangular in cross section, and using the zeroth order diffraction beam and .+-.first order diffraction beams emergent from the diffraction grating, a plurality of light source images are formed along the longitudinal direction on the exit plane of each lens element in the fly-eye lens. In a preferred mode the intensity of illumination light on a mask is increased using first and sec...

The optical printing apparatus comprises a fluorescent lamp light source, a shield plate for blocking substantially all of the light emitted from the light source, a liquid crystal panel subject to irradiation with the light emitted from the light source and passing through a slit in the shield plate. The liquid crystal panel includes a plurality of light valves. A driver is disposed on the outside of the shield plate for selectively opening and closing the light valves. Fibers disposed below th...

An apparatus for sampling dust in a duct for the purpose of knowing, in advance a need for cleaning the inside of such a narrow duct as can not be accessed internally by a person, the kinds of accumulations in the duct and the state of accumulation and sticking or the like. The apparatus comprises a traveling truck enabled to travel forwardly and backwardly in the duct, a TV camera mounted on the traveling truck in order to observe the inside of the duct, a sampling bucket attached to the front ...