Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.

Abstract: A projector includes an image projection unit for displaying an image by a liquid crystal panel, and a controller that powers off the projector after displaying a black image in the image projection unit for a predetermined time (a set refresh time) in a refresh mode for improving burn-in of the liquid crystal panel, in which the controller stops the refresh mode when an interrupt event is generated before the set refresh time elapses in the refresh mode and powers off the projector after executing an interrupt process according to the interrupt event.

Abstract: In a method of controlling a projector for displaying a whole image having partial images arranged based on image information supplied from an image supply device in cooperation with a projector, there are included the steps of displaying the partial image based on a part of the image information supplied from the image supply device, outputting the image information to the projector for displaying the partial image based on another part of the image information, obtaining configuration information related to the arrangement of the partial images, deciding overall resolution as the resolution for displaying the whole image based on the configuration information obtained, and storing the overall resolution to a resolution storage section for storing the resolution to be given to the image supply device as a notice.

Abstract: A projector includes: an image I/F unit that communicates with a document camera; a projection unit that displays an image based on photographic image data received from the document camera via the image I/F unit on a screen; a position detection unit that detects a position of an indicator with respect to the screen; and an instruction information transmission unit that transmits a control command for causing the document camera to perform a process based on a function related to an icon via the image I/F unit in a case in which it is detected that a region corresponding to the icon of the screen is operated with the indicator based on a detection result of the position detection unit.

Abstract: A projector includes an image projection unit for displaying an image by a liquid crystal panel, and a controller that powers off the projector after displaying a black image in the image projection unit for a predetermined time (a set refresh time) in a refresh mode for improving burn-in of the liquid crystal panel, in which the controller stops the refresh mode when an interrupt event is generated before the set refresh time elapses in the refresh mode and powers off the projector after executing an interrupt process according to the interrupt event.

Abstract: A display apparatus, which improves operability in a case where operations are performed by plural indicators, and a display apparatus control method. A detection unit that detects an operation performed by a first indicator on a screen and an operation performed by a second indicator on the screen, and an invalid determination unit that receives an indication which causes the operations to be invalid are included. In a case where the indication is received after the detection unit detects the operation performed by the second indicator, and, thereafter, detects the operation performed by the first indicator, the invalid determination unit causes the operation performed by the second indicator to be invalid.

Abstract: A light curtain installation method, which is a method for adjusting or checking an installation state of a light curtain for detecting an operation with respect to an image plane of a display apparatus, includes: determining whether or not it is possible to detect an object that comes into contact with a target region on the image plane which corresponds to a reference pixel which is a pixel at a predetermined position; and setting a drive state of the reference pixel such that the drive state of the reference pixel is different depending on a result of the determining.

Abstract: A projector includes: an image I/F unit that communicates with a document camera; a projection unit that displays an image based on photographic image data received from the document camera via the image I/F unit on a screen; a position detection unit that detects a position of an indicator with respect to the screen; and an instruction information transmission unit that transmits a control command for causing the document camera to perform a process based on a function related to an icon via the image I/F unit in a case in which it is detected that a region corresponding to the icon of the screen is operated with the indicator based on a detection result of the position detection unit.

Abstract: A position detection device capable of preventing an operation that is not intended by an operator from being detected as an input is provided. The position detection device includes: a detecting section that detects an indicator that performs an operation with respect to a screen, and an indicator different from the indicator; an imaging section that forms a captured image obtained by imaging a range including the screen; and a control section that detects a motion of the indicator with respect to the screen and a position of the indicator with respect to the screen based on data on the captured image of the imaging section to determine whether or not to detect an operation based on the indicator as an input.

Abstract: A position detection device capable of preventing an operation that is not intended by an operator from being detected as an input is provided. The position detection device includes: a detecting section that detects an indicator that performs an operation with respect to a screen, and a target different from the indicator; an imaging section that images a range including the screen to form a captured image; and a control section that detects a motion of the indicator based on data on the captured image of the imaging section to determine whether or not to detect an operation based on the indicator as an input.

Abstract: A display apparatus, which improves operability in a case where operations are performed by plural indicators, and a display apparatus control method. A detection unit that detects an operation performed by a first indicator on a screen and an operation performed by a second indicator on the screen, and an invalid determination unit that receives an indication which causes the operations to be invalid are included. In a case where the indication is received after the detection unit detects the operation performed by the second indicator, and, thereafter, detects the operation performed by the first indicator, the invalid determination unit causes the operation performed by the second indicator to be invalid.

Abstract: An illumination apparatus includes: a plurality of light emitting modules connected in series; a constant current source; and a fault detection circuit for detecting that the plurality of light emitting modules have at least one thereof with a short circuit fault. The light emitting module includes: an organic EL panel; a threshold value detection circuit configured to output a constant voltage when the organic EL panel between its anode and cathode has a potential difference equal to or larger than a threshold value; and a VI conversion circuit receiving the constant voltage from the threshold value detection circuit, converting the constant voltage into a constant current, and outputting the constant current. The fault detection circuit detects whether the plurality of light emitting modules have a short circuit fault based on a total value of the constant current output from each light emitting module.

Abstract: A light curtain installation method, which is a method for adjusting or checking an installation state of a light curtain for detecting an operation with respect to an image plane of a display apparatus, includes: determining whether or not it is possible to detect an object that comes into contact with a target region on the image plane which corresponds to a reference pixel which is a pixel at a predetermined position; and setting a drive state of the reference pixel such that the drive state of the reference pixel is different depending on a result of the determining.

Abstract: A lighting apparatus may include a holding member, a lighting panel, and an attachment bracket for removably attaching the lighting panel to the holding member. The lighting panel may form a first position in which a light-emitting surface of the lighting panel and a light-emitting surface of a lighting panel are located substantially on the same plane with each other and a second position in which the lighting panel is pressed from its light-emitting surface side so that the attachment bracket pivots around a portion where the attachment bracket is attached to the holding member and the lighting panel is inclined with respect to the lighting panel. As the lighting panel forming the second position is moved in a direction away from the holding member the attachment bracket is released from the holding member, and the lighting panel forming the second position is readily removed from the holding member.

Abstract: A projector system includes: a position detecting unit that detects a pointed position of a pointer on a projection surface; a drawing unit that performs drawing on the projection surface according to the pointed position detected by the position detecting unit; a height detecting unit that detects a height of a user of a projector; and a display changing unit that changes, according to the user's height detected by the height detecting unit, at least one of a shape of the image projected onto the projection surface and a display position of the image on the projection surface.

Abstract: A position detection device capable of preventing an operation that is not intended by an operator from being detected as an input is provided. The position detection device includes: a detecting section that detects an indicator that performs an operation with respect to a screen, and an indicator different from the indicator; an imaging section that forms a captured image obtained by imaging a range including the screen; and a control section that detects a motion of the indicator with respect to the screen and a position of the indicator with respect to the screen based on data on the captured image of the imaging section to determine whether or not to detect an operation based on the indicator as an input.

Abstract: A position detection device capable of preventing an operation that is not intended by an operator from being detected as an input is provided. The position detection device includes: a detecting section that detects an indicator that performs an operation with respect to a screen, and a target different from the indicator; an imaging section that images a range including the screen to form a captured image; and a control section that detects a motion of the indicator based on data on the captured image of the imaging section to determine whether or not to detect an operation based on the indicator as an input.

Abstract: A drive device and a lens unit include a base member; a driven member disposed at a prescribed distance from the base member and having a flat plane; a support member coupling the base member and the driven member and supporting the driven member so as to substantially maintain a prescribed distance between the base member and the driven member from start to end of movement of the driven member; and a driving member driving the driven member so as to move the flat plane in parallel from start to end of movement. The driving member causes a linear shape-memory alloy wire to expand and contract, thereby moving the driven member.

Abstract: A lighting apparatus may include a holding member, a lighting panel, and an attachment bracket for removably attaching the lighting panel to the holding member. The lighting panel may form a first position in which a light-emitting surface of the lighting panel and a light-emitting surface of a lighting panel are located substantially on the same plane with each other and a second position in which the lighting panel is pressed from its light-emitting surface side so that the attachment bracket pivots around a portion where the attachment bracket is attached to the holding member and the lighting panel is inclined with respect to the lighting panel. As the lighting panel forming the second position is moved in a direction away from the holding member, the attachment bracket is released from the holding member, and the lighting panel forming the second position is readily removed from the holding member.

Abstract: An illumination apparatus includes: a plurality of light emitting modules connected in series; a constant current source; and a fault detection circuit for detecting that the plurality of light emitting modules have at least one thereof with a short circuit fault. The light emitting module includes: an organic EL panel; a threshold value detection circuit configured to output a constant voltage when the organic EL panel between its anode and cathode has a potential difference equal to or larger than a threshold value; and a VI conversion circuit receiving the constant voltage from the threshold value detection circuit, converting the constant voltage into a constant current, and outputting the constant current. The fault detection circuit detects whether the plurality of light emitting modules have a short circuit fault based on a total value of the constant current output from each light emitting module.