Abstract: The present invention discloses a method for performing a graphic input for such OA equipment as computers and game machines. This invention includes a movement of a position indicator, in which pressure sensors made of elastic film are contained. When the position indicator is moved in the air circumstance, the elastic film bends along the movement. The spatial movement of the position indicator is calculated by measuring each pressure sensor output, and then calculated results are inputted into the computer. To avoid the external disturbance such as wind, the pressure sensors are covered. The invention possesses the function of interchangeability at upper levels of existing position indicators especially mouse, as well as cost-effectiveness and mass productivity.

Abstract: The present invention discloses an ellipsometer that is able to provide multivariable measurement and analysis of optical constants of sample, comprising: a semiconductor laser diode that serves as the light source; a Pertie device attached to the semiconductor laser diode; a collimator for making the light parallel; a polarizer for transforming the light into a suitable linearly polarized state and radiating onto the sample; an analyzer for converting the light reflected from the sample into suitable linearly polarized light; and, a photosensor; wherein, the wavelength of light radiated from the semiconductor laser can be changed by changing the case temperature of the semiconductor laser by a Pertie device. This ellipsometer is used to perform measurement using multiple wavelengths to obtain an initial model of the optical constants of each layer after which, by starting from this model, the optical constants of each layer are systematically calculated from measured values of tan .PSI. and cos .DELTA.

Abstract: The present invention discloses an ellipsometer using incident light having a wide beam diameter, comprising: a collimator for making the light parallel; a polarizer for transforming the light into a suitable linearly polarized state and radiating onto the sample; a beam expander for expanding the light to the size required for a single measurement; an objective lens composed of an afocal lens system for capturing the light reflected from the sample; an analyzer for converting the reflected light to suitable linearly polarized light; an imaging lens composed of an afocal lens system for forming an image of the sample on a image sensor; and, a image sensor; whereby, measurement of the polarized light can be performed at high speed and high resolution.

Abstract: An ellipsometer using an expanded beam for measuring characteristic of a sample comprising a beam expander disposed in an incident light beam for expanding the incident light beam, the expanded light beam being reflected from the sample, a condenser lens disposed in the expanded and reflected light beam for condensing the expanded and reflected light beam into a light beam having a cross section, and a photo sensor for receiving the light beam, the cross section of the light beam having a sufficient area for the photo sensor to form a two-dimentional image from the light beam from the condenser lens, whereby the measurement of the elliptically polarized state can be measured at high speed.

Abstract: An image input/output apparatus for inputting images written on a plate and for outputting images on the plate. The image input/output apparatus is movable on the plate, and has a size independent from the size of the plate. The apparatus comprises a mobile assembly movable on the plate, an image pick-up device mounted on the mobile assembly, for picking up images written on the plate, wherein the image pick-up device picking up the images on the plate while the mobile assembly is moving on the plate; and printing device, mounted on the mobile assembly, for printing, in accordance with given image data, images on the plate.