Abstract:
The present invention provides a control device capable of improving hysteresis characteristics of a voice coil motor (31) and attaining a suitable lens position without complicating the structure of the control device. As solving means of the invention, a voice coil motor control device (30) includes a driving current control part (34) that controls a driving current supplied to the voice coil motor (31) in accordance with a driving pulse subjected to pulse width modulation, and a driving pulse control part (32) that divides a drive period of the voice coil motor (31) into a movement period and a holding period, and controls the driving pulse by changing the duty ratio of the driving pulse during the movement period in accordance with a duty setting value and fixing the duty ratio of the driving pulse during the holding period to the duty setting value.
Abstract:
An image processing apparatus (5) that corrects an input image signal (Xin) pixel by pixel to generate a corrected image signal (Xout), having a filtering means (2) that determines a luminance distribution of a pixel to be corrected and pixels neighboring the pixel to be corrected, a correction gain calculation means (3) that determines the correction gain of the pixel to be corrected, and an operation means (4) that uses the correction gain determined by the correction gain calculation means to perform an operation on the input image signal pixel by pixel. With this simple configuration, the dynamic range of the input image can be appropriately improved.
Abstract:
The present invention provides a control device capable of improving hysteresis characteristics of a voice coil motor (31) and attaining a suitable lens position without complicating the structure of the control device. As solving means of the invention, a voice coil motor control device (30) includes a driving current control part (34) that controls a driving current supplied to the voice coil motor (31) in accordance with a driving pulse subjected to pulse width modulation, and a driving pulse control part (32) that divides a drive period of the voice coil motor (31) into a movement period and a holding period, and controls the driving pulse by changing the duty ratio of the driving pulse during the movement period in accordance with a duty setting value and fixing the duty ratio of the driving pulse during the holding period to the duty setting value.
Abstract:
A non-dispersive infrared analyzer for determining the concentration of two components of a sample fluid. A zero fluid and a sample fluid are alternately supplied to two cells. Two pneumatic detectors are respectively optically arranged in series with two light sources such that the two cells are respectively sandwiched between the two light sources and the two detectors. At least one filter whose passband corresponds to the absorbtion bands of one of the two components of the sample fluid is located directly adjacent to and optically in series with at least one of the two cells.
Abstract:
A gas analyzer of the fluid modulation type includes at least one cell, structure for alternately introducing a sample gas to be analyzed and a reference gas into the cell, a detector for analyzing a property of the sample gas, and an arrangement for alternately discharging the sample gas and the reference gas from the cell. A critical flow device is located in the discharging arrangement. A pump is located in the discharging arrangement and has a capacity for operating the critical flow device under conditions of critical gas flow, thereby maintaining the gas passing through the critical flow device and the cell at a constant flow rate.
Abstract:
A gas analyzer includes a first conduit for the supply of gas to be tested, a second conduit for the supply of a standard gas, first and second cells, a light source for directing light rays through the first and second cells, and a detector for receiving the light rays after passing through the cells. There is provided a gas flow change-over device connected to the first and second conduits for alternating at fixed intervals between a first gas supply arrangement wherein fixed amounts of gas to be tested and the standard gas are simultaneously supplied to the first and second cells, respectively, and a second gas supply arrangement wherein the fixed amounts of the gas to be tested and the standard gas are simultaneously supplied to the second and first cells, respectively.
Abstract:
A gas analyzer for measuring the concentration of a gaseous component in a test gas includes first and second separate cells adapted to alternately be filled with a test gas containing a gaseous component to be analyzed and a standard gas, light sources for directing rays of energy through the first and second cells and through the test gas and standard gas alternately contained therein, a detector positioned to receive the rays of energy after passage thereof through the first and second cells for detecting the concentration of the gaseous component within the test gas, and a changeover device connected to the first and second cells and adapted to be connected to sources of the test gas and the standard gas for alternately supplying the test gas and standard gas, at fixed intervals and in fixed amounts, into the first and second cells. The changeover device includes a single block having therein first and second inlets adapted to be connected to the source of test gas and the source of standard gas, respectively, first and second outlets respectively connected to the first and second cells, and a rotary valve rotatably movable between a first position respectively connecting the first and second inlets with the first and second outlets and a second position respectively connecting the first and second inlets with the second and first outlets.
Abstract:
An optical system for a spectroscopic analyzer. The system has a light source, a detector and a sample cell connected in a line, and in the sample cell or between the sample cell and one of the other elements is a light chopper device. The light chopper has a rotating element in the form of a disc-shaped member or members which periodically block light from the light source and pass light during the times it is not blocked. The rotating element is driven by a motor on the outside of the structure.
Abstract:
An obstruct of this invention is to make it possible to form a metal-oxide film or a metal-nitride film having less oxygen deficit at a high deposition rate with improved repeatability and to downsize a film forming system as well.The film forming system in accordance with this invention comprises a chamber 3 inside of which a substrate 2 is held and an injection valve 4 that directly injects the liquid precursor into the chamber 3, wherein the liquid precursor is a mixed solution composed of a metallic compound and a low boiling point organic compound, and a pressure in the chamber 3 is made to be both larger than a vapor pressure of the metallic compound prior to being mixed with the low boiling point organic compound and smaller than a vapor pressure of the mixed solution.
Abstract:
The present claimed invention is a film forming system 1 that forms a film by vaporizing a liquid precursor and then depositing the vaporized liquid precursor on a substrate 2, and comprises a chamber 3 inside of which the substrate 2 is held, an injection valve 4 that directly injects the liquid precursor into the chamber 3, and a control unit 11 that alternately sets a supplying period while the liquid precursor is directly injected into the chamber 3 to supply the liquid precursor in a vaporized state and a supply halt period while the liquid precursor is not supplied into the chamber 3 and controls the supplying period and the supply halt period by periodically opening and closing the injection valve 4 so as to intermittently supply the liquid precursor into the chamber 3, and is characterized by that the control unit 11 controls the supply halt period to be equal to or longer than a migration/evaporation period necessary for atoms or molecules of the liquid precursor deposited on the substrate 2 to migrate and necessary for a reaction by-product material generated on the substrate 2 to evaporate. An object of this invention is to generate a thin film of high grade having less impure substances.