Abstract: A fluid dispenser dispenses a fluid alternately from one of a pair of ports (29,31) that are provided on opposite ends of a syringe (26) by moving a piston (42) back and forth inside the syringe. A pair of stirrers (47,48) are provided in the syringe on opposite axial sides of the piston. The stirrers may each individually rotate on an axis that extends in parallel with the moving direction of the piston. A pair of stirrer driving rings (49,50) are mounted on an outer periphery of the syringe in correspondence with the stirrers. Magnets (55,56,59,60) are embedded in the stirrers and the stirrer driving rings such that the stirrer is rotated by magnetic fields that are generated from the stirrer driving ring, as the stirrer driving ring is rotated by a motor (51,52).

Abstract: A method for monitoring an optical system having a front lens disposed immediately at a combustion chamber minimizes the time that the optical system is impaired for maintenance and cleaning work on the front lens. According to the invention, intensity values of the light of a flame of the combustion chamber are recorded for this purpose via the optical system, and the front lens surface is cleaned if necessary. In this process, a temperature value and a mean intensity value are determined from the intensity values, and then the relative degree of pollution of the front lens is determined therefrom and used for the purpose of determining a cleaning and/or maintenance time of the front lens.

Abstract: In an inspecting method of a color filter, comprising irradiating light from a light source to a coloring portion, measuring a transmitting light amount transmitted through the coloring portion by a light receiving element, and calculating a coloring density of the coloring portion, the light amount of the light source is set substantially constant, the amount of incident light received by the light receiving element is adjusted by an optical element arranged within an optical path, the transmitting light amount of an uncoloring portion is measured and the coloring density of the coloring portion is inspected by comparing the transmitting light amount of the coloring portion to the transmitting light amount of the uncoloring portion.

Abstract: A holder is constructed of a cylindrical member made of a metal and an inward flange member made of a diffusion transparent member. The inside of the cylindrical member is sectioned into a tapered area whose inside diameter decreases downward, and a small-diameter cylindrical area and a large-diameter cylindrical area. The inward flange member is bonded to the bottom end of the small-diameter cylindrical area.

Abstract: An method and device for inspecting for surface defects, internal defects, and surface-adhered foreign matter on semitransparent materials. An illuminating device transmits light, that is then collimated through a collimating lens unit, through an object to be inspected. The light then transmits through the object to be inspected an eventually is detected by a detector. Any defects in the object to be inspected will be detected.