Abstract: A carrier spacer includes an annular main body, a first tapered part formed on an inner peripheral part of a front surface of the main body, a second tapered part formed on the inner peripheral part of a reverse surface of the main body, a flat surface formed on the outer peripheral side of the first tapered part on the front surface of the main body and holding the reverse surface of the outer peripheral part of a semiconductor wafer, a peripheral edge part formed on the outer peripheral side of the flat surface of the main body and provided with a step having a height position higher than a height position of the flat surface, an arcuate cutout part formed from the peripheral edge part to the flat surface of the main body, and a pair of handles protruding from the peripheral edge part toward the outer peripheral side.

Abstract: A carrier spacer includes an annular main body, a first tapered part formed on an inner peripheral part of a front surface of the main body, a second tapered part formed on the inner peripheral part of a reverse surface of the main body, a flat surface formed on the outer peripheral side of the first tapered part on the front surface of the main body and holding the reverse surface of the outer peripheral part of a semiconductor wafer, a peripheral edge part formed on the outer peripheral side of the flat surface of the main body and provided with a step having a height position higher than a height position of the flat surface, an arcuate cutout part formed from the peripheral edge part to the flat surface of the main body, and a pair of handles protruding from the peripheral edge part toward the outer peripheral side.

Abstract: A mobile electronic device 10 includes a projector 34, a camera 36, and a processing unit 22. The projector 34 projects an image, and the camera 36 captures the image projected by the projector 34. Based on first image information for causing the projector 34 to project a predetermined image and second image information obtained by capturing the image projected by the projector 34 based on the first image information by the camera 36, the processing unit 22 determines whether the projector 34 projects the predetermined image. When determining that the projector 34 fails to project the predetermined image, the processing unit 22 suppresses output of the projector 34 for projecting the image.

Abstract: It is a task to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a detector that detects a specific change in an irradiation area of light irradiated from the image projector or in a predetermined area including the irradiation area, and a control unit that controls the operation of the image projector. The task is solved in such a manner that when the detector detects the specific change, the control unit causes the image projector to stop emission of light therefrom, or to reduce an amount of light emitted therefrom.

Abstract: According to one embodiment, a mobile electronic device includes an image projection unit for projecting an image, an image display unit for displaying an image, and a control unit for controlling the image projection unit and the image display unit. When the image projection unit projects an image and the image display unit displays an image, the control unit performs control for making the chromaticity of the image projected by the image projection unit and the chromaticity of the image displayed by the image display unit match each other.

Abstract: According to the present invention, a mobile electronic device includes: a housing; a projecting unit for projecting an image, the projecting unit being mounted on the housing; a detecting unit for detecting a positional relation between the projecting unit and a projection surface on which an image projected by the projecting unit is to be displayed; a position changing unit for changing a position of the housing; and a control unit for controlling the position changing unit on the basis of the positional relation between the projecting unit and the projection surface detected by the positional-relation detecting unit.

Abstract: According to an aspect, a portable electronic device includes an imaging unit, a moving unit, and a control unit. The imaging unit images a subject in an imaging region. The moving unit changes orientation and/or a position of the portable electronic device. The control unit causes the moving unit to change the orientation and/or the position of the portable electronic device so as to move the imaging region of the imaging unit.

Abstract: It is an object to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a control unit that controls the operation of the image projector, a cabinet that holds the image projector and the control unit, and an acceleration sensor that detects an acceleration acting on the cabinet. The object is achieved in such a manner that when an acceleration of a given value or more is detected by the acceleration sensor, the control unit stops emission of light from the image projector or reduces an amount of light emitted from the image projector.

Abstract: It is a task to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a cabinet, an input unit that is disposed on the cabinet and detects an operation input by an operator, and a control unit that controls the operation of the image projector and the state of the input unit. The task is solved in such a manner that when a predetermined operation is detected by the input unit, the control unit stops emission of light from the image projector or reduces an amount of light emitted from the image projector.

Abstract: An object is to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a control unit that controls a projection operation by the image projector, and a cabinet that supports the image projector and the control unit. The control unit can select a first mode and a second mode, and controls an operation of the image projector, when the first mode is selected, in a condition different from that when the second mode is selected. The object is thereby solved.

Abstract: According to an aspect, a portable electronic device includes an imaging unit, a moving unit, and a control unit. The imaging unit images a subject in an imaging region. The moving unit changes orientation and/or a position of the portable electronic device. The control unit causes the moving unit to change the orientation and/or the position of the portable electronic device so as to move the imaging region of the imaging unit.

Abstract: According to the present invention, a mobile electronic device includes: a housing; a projecting unit for projecting an image, the projecting unit being mounted on the housing; a detecting unit for detecting a positional relation between the projecting unit and a projection surface on which an image projected by the projecting unit is to be displayed; a position changing unit for changing a position of the housing; and a control unit for controlling the position changing unit on the basis of the positional relation between the projecting unit and the projection surface detected by the positional-relation detecting unit.

Abstract: A semiconductor wafer having IGBT elements and transistors formed on a surface thereof is prepared. Electron beams are emitted all over the surface of the semiconductor wafer. Recombination centers are formed in the IGBT elements and the transistors. ON voltages of the transistors are measured by a measurement device, and lifetimes defined in the IGBT elements and the transistors are recovered by a prescribed annealing treatment. When the lifetimes are recovered, a control device controls an annealing treatment amount in the annealing treatment based on the measured ON voltages of the transistors such that ON voltages of the IGBT elements are each equal to a desired ON voltage. Variations in the ON voltages of a plurality of IGBT elements obtained from the semiconductor wafer are reduced.

Abstract: According to one embodiment, a mobile electronic device includes an image projection unit for projecting an image, an image display unit for displaying an image, and a control unit for controlling the image projection unit and the image display unit. When the image projection unit projects an image and the image display unit displays an image, the control unit performs control for making the chromaticity of the image projected by the image projection unit and the chromaticity of the image displayed by the image display unit match each other.

Abstract: A mobile electronic device 10 includes a projector 34, a camera 36, and a processing unit 22. The projector 34 projects an image, and the camera 36 captures the image projected by the projector 34. Based on first image information for causing the projector 34 to project a predetermined image and second image information obtained by capturing the image projected by the projector 34 based on the first image information by the camera 36, the processing unit 22 determines whether the projector 34 projects the predetermined image. When determining that the projector 34 fails to project the predetermined image, the processing unit 22 suppresses output of the projector 34 for projecting the image.

Abstract: It is a task to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a cabinet, an input unit that is disposed on the cabinet and detects an operation input by an operator, and a control unit that controls the operation of the image projector and the state of the input unit. The task is solved in such a manner that when a predetermined operation is detected by the input unit, the control unit stops emission of light from the image projector or reduces an amount of light emitted from the image projector.

Abstract: It is an object to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a control unit that controls the operation of the image projector, a cabinet that holds the image projector and the control unit, and an acceleration sensor that detects an acceleration acting on the cabinet. The object is achieved in such a manner that when an acceleration of a given value or more is detected by the acceleration sensor, the control unit stops emission of light from the image projector or reduces an amount of light emitted from the image projector.

Abstract: It is a task to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a detector that detects a specific change in an irradiation area of light irradiated from the image projector or in a predetermined area including the irradiation area, and a control unit that controls the operation of the image projector. The task is solved in such a manner that when the detector detects the specific change, the control unit causes the image projector to stop emission of light therefrom, or to reduce an amount of light emitted therefrom.

Abstract: An object is to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a control unit that controls a projection operation by the image projector, and a cabinet that supports the image projector and the control unit. The control unit can select a first mode and a second mode, and controls an operation of the image projector, when the first mode is selected, in a condition different from that when the second mode is selected. The object is thereby solved.

Abstract: A semiconductor wafer having IGBT elements and transistors formed on a surface thereof is prepared. Electron beams are emitted all over the surface of the semiconductor wafer. Recombination centers are formed in the IGBT elements and the transistors. ON voltages of the transistors are measured by a measurement device, and lifetimes defined in the IGBT elements and the transistors are recovered by a prescribed annealing treatment. When the lifetimes are recovered, a control device controls an annealing treatment amount in the annealing treatment based on the measured ON voltages of the transistors such that ON voltages of the IGBT elements are each equal to a desired ON voltage. Variations in the ON voltages of a plurality of IGBT elements obtained from the semiconductor wafer are reduced.