Abstract: An image detector for bank notes is provided which can be made at low cost and in small size. The image detector comprises a pair of detector units 13 includes a first image detection sensor 24 which detects an image of a first detection area mounted on one side of a detector unit 18, a first light emitting device 27 which irradiates light towards the first detection area, and a second light emitting device 31 which irradiates light towards a second detection area mounted on one side of the unit main body 18 but in a different location from the first detection area, a pair of detector units is disposed so as to oppose one another across a bank note transportation path 12, in a manner which enables the image detection sensor 24 of one of the detection units 13 to detect an image of the second detection area of the other of the detection units 13.

Abstract: An object is to provide an image detector for bank notes which enables the cost to be lowered.

Abstract: An image detector for bank notes is provided which can be made at low cost and in small size. The image detector comprises a pair of detector units 13 includes a first image detection sensor 24 which detects an image of a first detection area mounted on one side of a detector unit 18, a first light emitting device 27 which irradiates light towards the first detection area, and a second light emitting device 31 which irradiates light towards a second detection area mounted on one side of the unit main body 18 but in a different location from the first detection area, a pair of detector units is disposed so as to oppose one another across a bank note transportation path 12, in a manner which enables the image detection sensor 24 of one of the detection units 13 to detect an image of the second detection area of the other of the detection units 13.

Abstract: An object is to provide an image detector for bank notes which enables the cost to be lowered.

Abstract: The invention relates to an image sensor for use in the facsimile device, image reader, digital scanner and the like. In this image sensor, the photodiodes and blocking diodes formed on an insulating board are insulated by a transparent interlayer insulating film and are connected in series and opposite polarity by coupling electrodes through contact holes in the transparent interlayer insulating film. This image sensor features a high reading speed and a low dark output noise.

Abstract: In a light sensitive semiconductor unit having a plurality of light sensitive semiconductor cells connected in series, the light receiving area or size of the light sensitive semiconductor cells is increased as the distance from the center of the unit increases so that every light sensitive semiconductor cell can generate generally equal short circuit current even if the light intensity is decreased as the distance between the light sensitive semiconductor cell and light source increases, whereby a high operating voltage can be obtained.

Abstract: The present invention relates to a strain sensor, particularly a strain sensor which detects a mechanical strain using the electric resistance change of a non-single crystalline semiconductor which is proportional to mechanical strain. The strain sensor in the present invention consists of a non-single crystalline semiconductor containing Si wherein the activation energy determined from the temperature dependency of the dark conductivity is under 15 meV. The strain sensor particularly suits an application to a mechanical strain measurement under a comparatively strong magnetic field.