Abstract: Provided is a highly reliable optical filtering device used as a spatial filter for an optical inspection apparatus and configured to prevent a shutter from sticking to a wall surface of a shutter opening. The optical filtering device includes the shutter openable and closeable by voltage control and a substrate having the shutter opening serving as a movable range of the shutter, in which the substrate includes a sticking prevention part configured to prevent the shutter from sticking to the wall surface of the shutter opening when the shutter is opened.

Abstract: A light sampling measurement apparatus comprising a nonlinear optical element supplied with a light to be measured and a sampling light and a light receiving element for receiving a light outputted from the nonlinear optical element, includes: a storage unit for previously storing noise generated in the light receiving element; a calculating unit for obtaining a subtracted noise by subtracting the noise stored in the storage unit, from a measured noise, to calculate a Q value of the light to be measured.

Abstract: A light sampling measurement apparatus comprising a nonlinear optical element supplied with a light to be measured and a sampling light and a light receiving element for receiving a light outputted from the nonlinear optical element, includes: a storage unit for previously storing noise generated in the light receiving element; a calculating unit for obtaining a subtracted noise by subtracting the noise stored in the storage unit, from a measured noise, to calculate a Q value of the light to be measured.

Abstract: In order to realize high-speed and highly efficient pattern data transmission without enlarging the size of circuits, a pattern data transmission device is provided which transmits compressed pattern data for generating a test pattern to be used for the inspection of a semiconductor integrated circuit from an external storage device to a pattern memory of a pattern generating device comprises a decompression section which determines whether decompressed pattern data is the same as decompressed pattern data previously written in a pattern memory according to compressed pattern data when writing the decompressed pattern data inside the compressed pattern data into a pattern memory, and an automatic disposition section which reads out the same decompressed pattern data on the pattern memory according to memory control information inputted from the decompression section and makes a copy of the same decompressed pattern data on the pattern memory.

Abstract: A camera has a control device (MCU) for controlling magnetic recording of photographing data in units of photographing frames stored upon photographing onto the corresponding photographing frames on the film upon film rewinding. The camera has a photographable frame number detection device for detecting the number of photographable frames of the film from an information device provided to a film cartridge, and a film counter device for incrementing the count number every time one frame is photographed. Also, the camera has a film end detection device for detecting the film end, and a comparison device for comparing the number of photographable frames detected by the photographable frame number detection device with the count number of the film counter device when the film end detection device detects the film end. Furthermore, the camera has an alarm display device (DSP) for producing an alarm indicating errors in magnetic recording when the comparison device detects a non-coincidence between the two values.

Abstract: A camera shutter control device includes a controller for controlling the camera, a shutter device having front and rear curtains, and shutter drives for driving the curtains. A computation device determines the shutter time and a correction device corrects the shutter time based on correction values stored in a memory. The shutter curtains are continuously controlled by the controller based on a corrected shutter time, wherein the corrected shutter time can have either a positive, negative, or zero value.

Abstract: A diaphragm control device for a camera capable of controlling a diaphragm member with a high level of precision is disclosed. The camera and diaphragm control device are equipped with a mirror member that moves from the down position to the up position during shooting of a subject, a mirror driving device to drive the mirror member, a diaphragm mechanism connected with the mirror member to control light rays from the subject, a diaphragm driving device to drive the diaphragm mechanism, a stopping device to stop the diaphragm driving device, and a control device to control the diaphragm driving device and the stopping device to stop the diaphragm mechanism at about a predetermined position. A correction device correct changes in the stopping characteristics of the stopping device to precisely stop the diaphragm mechanism at the predetermined position.