Abstract: A personal computer includes an output interface configured to output an image signal to a projector, an image processing section configured to generate a second image obtained by reducing visibility of the first image, and a second control section configured to, when a first condition is satisfied, cause the output interface to output a second image signal based on the second image and, when a second condition is satisfied, cause the output interface to output a first image signal based on the first image.

Abstract: A projector includes a projecting section configured to display an image, an image interface to which an image signal corresponding to a first image is input from a personal computer, an image processing section configured to generate a second image obtained by reducing visibility of the first image based on the image signal, and a first control section configured to, when a first condition is satisfied, cause the projecting section to display the second image and, when a second condition is satisfied, cause the projecting section to display the first image.

Abstract: An evaluation method for an image projection system in which a first projector, a second projector, and a third projector perform stack projection on a screen, the method including acquiring a first image generated by capturing the screen at a first timing, acquiring a second image generated by capturing the screen at a second timing, causing the projection state of the first projector to differ from the projection states of the second projector and the third projector at the first timing, and evaluating whether or not the first projector needs to be adjusted based on the first image and the second image.

Abstract: A first image, a second image, and a third image generated by a camera that captures a screen at a first timing, a second timing, and a third timing are sequentially acquired. The projection states of a first projector and a second projector at the third timing are caused to be the same as the projection states of the first and second projectors at the first timing. The projection state of the first projector is caused to differ from the projection state of the second projector at least one of the first timing or the second timing. Whether or not the first projector needs to be adjusted is evaluated based on the first image, the second image, and the third image.

Abstract: A personal computer includes an output interface configured to output an image signal to a projector, an image processing section configured to generate a second image obtained by reducing visibility of the first image, and a second control section configured to, when a first condition is satisfied, cause the output interface to output a second image signal based on the second image and, when a second condition is satisfied, cause the output interface to output a first image signal based on the first image.

Abstract: A projector includes a projecting section configured to display an image, an image interface to which an image signal corresponding to a first image is input from a personal computer, an image processing section configured to generate a second image obtained by reducing visibility of the first image based on the image signal, and a first control section configured to, when a first condition is satisfied, cause the projecting section to display the second image and, when a second condition is satisfied, cause the projecting section to display the first image.

Abstract: A first image, a second image, and a third image generated by a camera that captures a screen at a first timing, a second timing, and a third timing are sequentially acquired. The projection states of a first projector and a second projector at the third timing are caused to be the same as the projection states of the first and second projectors at the first timing. The projection state of the first projector is caused to differ from the projection state of the second projector at least one of the first timing or the second timing. Whether or not the first projector needs to be adjusted is evaluated based on the first image, the second image, and the third image.

Abstract: An evaluation method for an image projection system in which a first projector, a second projector, and a third projector perform stack projection on a screen, the method including acquiring a first image generated by capturing the screen at a first timing, acquiring a second image generated by capturing the screen at a second timing, causing the projection state of the first projector to differ from the projection states of the second projector and the third projector at the first timing, and evaluating whether or not the first projector needs to be adjusted based on the first image and the second image.

Abstract: A display system includes a projector configured to project first image light based on first image information onto a projection surface, a detecting device configured to detect whether a person is present on a path on which the first image light passes, and a control device configured to cause, when the detecting device detects that a person is present on the path, the projector to project, instead of the first image light, second image light based on second image information different from the first image information.

Abstract: A projector includes a first corrector that performs first correction that corrects distortion of an image on first image information to generate first corrected image information, a second corrector that performs second correction that corrects distortion of an image on second image information to generate second corrected image information, a combiner that combines the first corrected image information and the second corrected image information with each other to generate combined image information, and a projection section that projects an image according to the combined image information. The second correction differs from the first correction.

Abstract: A display system includes a projector configured to project first image light based on first image information onto a projection surface, a detecting device configured to detect whether a person is present on a path on which the first image light passes, and a control device configured to cause, when the detecting device detects that a person is present on the path, the projector to project, instead of the first image light, second image light based on second image information different from the first image information.

Abstract: A projector includes a projection section capable of projecting an image according to image information in a predetermined area, an acquisition section that acquires position identification information that identifies a position that should be brought into focus in the predetermined region, and a control section that controls the projection section based on the position identification information in such a way that the position is brought into focus.

Abstract: A projector includes a projection section capable of projecting an image according to image information in a predetermined area, an acquisition section that acquires position identification information that identifies a position that should be brought into focus in the predetermined region, and a control section that controls the projection section based on the position identification information in such a way that the position is brought into focus.

Abstract: A projector includes a first corrector that performs first correction that corrects distortion of an image on first image information to generate first corrected image information, a second corrector that performs second correction that corrects distortion of an image on second image information to generate second corrected image information, a combiner that combines the first corrected image information and the second corrected image information with each other to generate combined image information, and a projection section that projects an image according to the combined image information. The second correction differs from the first correction.

Abstract: In a light irradiation device in which a light emitting element is attached to a printed circuit board, the heat radiation properties are enhanced, and improvement of the light emitting efficiency and reduction of the size and weight are realized. A Cu pattern covered with Ni is formed on a metal substrate 11. Light emitting elements 11 are mounted on the pattern in the form of a series circuit. Metal substrates in each of which the series connection is formed are connected to one another in parallel. Since Ni has excellent corrosion resistance and a high reflection efficiency, the surfaces of the substrates themselves can be used as reflective plates. A lens 37 is formed for each of the light emitting elements, whereby the emission efficiency can be further improved. When a circuit is configured in one region of a hybrid integrated circuit substrate, a position recognition mark 53 and a flow stop 57 are disposed in the open region. Also the region is covered with Ni so as to function as reflecting means.

Abstract: In a light irradiation device in which a light emitting element is attached to a printed circuit board, the heat radiation properties are enhanced, and improvement of the light emitting efficiency and reduction of the size and weight are realized. A Cu pattern covered with Ni is formed on a metal substrate 11. Light emitting elements 11 are mounted on the pattern in the form of a series circuit. Metal substrates in each of which the series connection is formed are connected to one another in parallel. Since Ni has excellent corrosion resistance and a high reflection efficiency, the surfaces of the substrates themselves can be used as reflective plates. A lens 37 is formed for each of the light emitting elements, whereby the emission efficiency can be further improved. Flow-stopping means 36 made of a brazing material is formed around each of the light emitting diodes 10. Also the surface of the brazing material is used as a reflecting surface.

Abstract: An electron gun comprising a changeover chamber and changeover circuit between the gun chamber and the insulated cable which connects the power supply circuits to the electrodes which enables adjustment of electrode potentials to accomplish electrode treatment without excessive gun currents.