Abstract: An image projection apparatus includes a detector that detects a first region emitting non-visible light; a projector that projects a visible-light image onto a second region including the first region detected by the detector; and a controller configured to generate the visible-light image. The controller varies colors of pixels of the visible-light image in a stepwise manner depending on emission intensities of the non-visible light at positions corresponding to the pixels within the first region.

Abstract: An image projection apparatus includes a detector that detects a first region emitting non-visible light; a projector that projects a visible-light image onto a second region including the first region detected by the detector; and a controller configured to generate the visible-light image. The controller varies colors of pixels of the visible-light image in a stepwise manner depending on emission intensities of the non-visible light at positions corresponding to the pixels within the first region.

Abstract: A visible light projection device includes a detecting unit that detects a first region emitting non-visible light, a projecting unit that performs projection using visible light onto a second region including the detected first region, and a control unit that controls the projecting unit to perform projection with a color selected by an operator. When a first color is selected as a color of visible light projected by the projecting unit onto a region other than the first region, the control unit informs the operator of first options to allow a color of visible light projected onto the first region to be selected from the first options. When a second color different from the first color is selected, the control unit informs the operator of second options to allow a color of visible light projected onto the first region to be selectable from the second options.

Abstract: A visible light projection device includes a detecting unit that detects a first region emitting non-visible light, a projecting unit that performs projection using visible light onto a second region including the detected first region, and a control unit that controls the projecting unit to perform projection with a color selected by an operator. When a first color is selected as a color of visible light projected by the projecting unit onto a region other than the first region, the control unit informs the operator of first options to allow a color of visible light projected onto the first region to be selected from the first options . When a second color different from the first color is selected, the control unit informs the operator of second options to allow a color of visible light projected onto the first region to be selectable from the second options.

Abstract: A condenser angle of 0.5 mrad or below is set with respect to a specimen. Electron-beam diameter of 20 to 100 nm &phgr; is set onto the surface of the specimen. A flux of highly parallel electron beams is irradiated onto the specimen having a strained layer quantum well structure. An image of electrons diffracted from the specimen is recorded onto an imaging plate. The recorded image is analyzed. Lattice constants and strains of layers of the strained layer quantum well structure are measured based on a result of this analysis.

Abstract: A condenser angle of 0.5 mrad or below is set with respect to a specimen. Electron-beam diameter of 20 to 100 nm &phgr; is set onto the surface of the specimen. A flux of highly parallel electron beams is irradiated onto the specimen having a strained layer quantum well structure. An image of electrons diffracted from the specimen is recorded onto an imaging plate. The recorded image is analyzed. Lattice constants and strains of layers of the strained layer quantum well structure are measured based on a result of this analysis.