Abstract: A holographic three-dimensional multi-spot light stimulation device is provided with: a three-dimensional imaging holographic optical system A which employs fluorescent exciting light to acquire three-dimensional fluorescence distribution information resulting from fluorescent signal light from a plurality of stimulation target objects; and a three-dimensional light stimulation holographic optical system B which employs a light stimulation hologram generated on the basis of the acquired three-dimensional fluorescence distribution information to form a plurality of light spots in space, to impart stimulation simultaneously to the plurality of stimulation target objects.

Abstract: A holographic three-dimensional multi-spot light stimulation device is provided with: a three-dimensional imaging holographic optical system A which employs fluorescent exciting light to acquire three-dimensional fluorescence distribution information resulting from fluorescent signal light from a plurality of stimulation target objects; and a three-dimensional light stimulation holographic optical system B which employs a light stimulation hologram generated on the basis of the acquired three-dimensional fluorescence distribution information to form a plurality of light spots in space, to impart stimulation simultaneously to the plurality of stimulation target objects.

Abstract: A translucent in-vivo indwelling device with a translucent region including a rare earth doped fluorapatite.

Abstract: A translucent in-vivo indwelling device with a translucent region including a rare earth doped fluorapatite.

Abstract: A semiconductor memory device reliably protects data written once into a non-volatile memory and exhibits high EEPROM data security functionality. The device has a user memory area to which a user can write freely chosen data, and a write-information storage memory area for storing information indicating whether or not data has been written into the user memory area. A control logic circuit analyzes whether to execute a write command from a user and outputs a write-prohibition signal if data is already written into the user memory area. The control logic circuit may include a password authentication circuit for authenticating a user-inputted password by comparing it with a password maintained inside the control logic circuit. The frequency of a changeable clock may be used to perform password authentication.

Abstract: There is provided a semiconductor memory device for reliably protecting data written once into a non-volatile memory, and having a high EEPROM data security functionality. The device is composed of a user memory area to which a user can write freely chosen data, and a write-information storage memory area for storing information indicating whether or not data has been written into the user memory area. Further, a password authentication is used, and a frequency of a clock to be used is changeable. The changeable clock to be used in the password authentication is used to perform the password authentication.