Abstract: An electromagnetic wave detection apparatus comprises an irradiator configured to emit electromagnetic waves; a switch comprising an action surface with a plurality of pixels disposed thereon, the switch being configured to switch each pixel between a first state of causing electromagnetic waves, including reflected waves, from an object, of electromagnetic waves irradiated from the irradiator, incident on the action surface to travel in a first direction and a second state of causing the electromagnetic waves incident on the action surface to travel in a second direction; a first detector configured to detect the electromagnetic waves that travel in the first direction; and a second detector configured to detect the electromagnetic waves that travel in the second direction. Also, the switch is configured to switch each of the plurality of pixels between the first and second states according to an irradiation region of the electromagnetic waves emitted from the irradiator.

Abstract: An electromagnetic wave detection apparatus (10) includes a switch (16), a first detector (19), and a second detector (20). The switch (16) includes an action surface (as) with a plurality of pixels (px) disposed thereon. The switch (16) is configured to switch each pixel (px) between the first state and the second state. In the first state, the pixels (px) cause electromagnetic waves incident on the action surface (as) to travel in a first direction (d1). In the second state, the pixels (px) cause the electromagnetic waves incident on the action surface (as) to travel in a second direction (d2). The first detector (19) detects the electromagnetic waves that travel in the first direction (d1). The second detector (20) detects the electromagnetic waves that travel in the second direction (d2).

Abstract: An electromagnetic wave detection apparatus (10) includes a switch (16), a first detector (19), and a second detector (20). The switch (16) includes an action surface (as) with a plurality of pixels (px) disposed thereon. The switch (16) is configured to switch each pixel (px) between the first state and the second state. In the first state, the pixels (px) cause electromagnetic waves incident on the action surface (as) to travel in a first direction (d1). In the second state, the pixels (px) cause the electromagnetic waves incident on the action surface (as) to travel in a second direction (d2). The first detector (19) detects the electromagnetic waves that travel in the first direction (d1). The second detector (20) detects the electromagnetic waves that travel in the second direction (d2).

Abstract: An electromagnetic wave detection apparatus (10) includes an irradiator (11), a first detector (17), a memory (13), and a controller (14). The irradiator (11) irradiates electromagnetic waves. The first detector (17) includes detection elements. The detection elements detect, by irradiation position, reflected waves of the electromagnetic waves irradiated onto an object (ob). The memory (13) stores related information. The related information is information associating any two of the emission direction of the electromagnetic waves and elements defining two points on a path. The path refers to a path of the electromagnetic waves emitted from the irradiator (11) to the first detector (17) via the object (ob). The controller (14) updates the related information based on the emission direction of the electromagnetic waves and the position of the detection element, among the detection elements, that detects the reflected waves of the electromagnetic waves.

Abstract: An electromagnetic wave detection apparatus (10) includes an irradiator (11), a first detector (17), a memory (19), and a controller (20). The irradiator (11) irradiates electromagnetic waves. The first detector (17) includes detection elements. The detection elements detect, by irradiation position, reflected waves of the electromagnetic waves irradiated on an object (ob). The memory (19) stores first related information including an emission direction of the emitted electromagnetic waves. The controller (20) updates the first related information based on the position of the detection element, among the detection elements, that detects the reflected waves of the electromagnetic waves.

Abstract: An optical member includes a light-transmissive substrate, which includes a substrate surface, and reflecting surfaces located inside the substrate and configured to reflect at least a portion of incident light. At least a portion of the reflecting surfaces is inclined relative to the substrate surface so as to collect at least a portion of the incident light.

Abstract: An electromagnetic wave detection apparatus (10) includes an irradiator (11), a first detector (17), a propagation unit (20), a memory (13), and a controller (14). The irradiator (11) irradiates electromagnetic waves. The first detector (17) detects reflected waves of the electromagnetic waves irradiated onto an object (ob). The propagation unit (20) includes propagation elements (px). By irradiation position of the electromagnetic waves irradiated onto the object (ob), the propagation elements (px) switch between propagating and not propagating the reflected waves towards the first detector (17). The memory (13) stores information related to the emission direction of the electromagnetic waves. The controller (14) updates the information related to the emission direction based on the position of the propagation element (px) that is propagating the reflected waves toward the first detector (17) when the first detector (17) detects the reflected waves.

Abstract: An electromagnetic wave detection apparatus (10) includes an irradiator (11), a first detector (17), a propagation unit (20), a memory (13), and a controller (14). The irradiator (11) irradiates electromagnetic waves. The first detector (17) detects reflected waves of the electromagnetic waves irradiated onto an object (ob). The propagation unit (20) includes propagation elements (px). By irradiation position of the electromagnetic waves irradiated onto the object (ob), the propagation elements (px) switch between propagating and not propagating the reflected waves of the electromagnetic waves towards the first detector (17). The memory (13) stores related information. The controller (14) updates the related information based on the position of the propagation element (px) that is propagating the reflected waves toward the first detector (17) when the first detector (17) detects the reflected waves.

Abstract: An electromagnetic wave detection apparatus causes electromagnetic waves incident on a reference surface to propagate in a particular direction using each of the pixels, a detector to detect electromagnetic waves incident on a detection surface, and a second propagation unit that includes a first surface opposing the reference surface, a second surface opposing the detection surface, and a third surface intersecting the first and second surface. The third surface causes electromagnetic waves propagating in a first direction to propagate in a second direction. The first surface causes electromagnetic waves propagating in a second direction to be incident on the reference surface and causes electromagnetic waves re-incident from the reference surface to propagate in a third direction. The third surface causes electromagnetic waves propagating in the third direction to propagate in a fourth direction. The second surface emits electromagnetic waves propagating in the fourth direction to the detection surface.

Abstract: An electromagnetic wave detection apparatus causes electromagnetic waves incident on the reference surface to propagate in a particular direction using each of the pixels, a first detector to detect electromagnetic waves incident on a first detection surface, and a second detector to detect electromagnetic waves incident on a second detection surface. A third surface separates electromagnetic waves propagating in a first direction into electromagnetic waves to be incident on the second detector and electromagnetic waves to propagate in a second direction. A first surface causes electromagnetic waves propagating in a second direction to be incident on the reference surface and causes electromagnetic waves re-incident from the reference surface to propagate in a third direction. The third surface causes electromagnetic waves propagating in the third direction to propagate in a fourth direction. A second surface emits electromagnetic waves propagating in the fourth direction to the first detection surface.

Abstract: A display apparatus includes an image projector and a controller. The image projector emits image projection light that projects an image onto a projection-target surface. The controller controls, in a time division manner, the emission direction of the image projection light emitted by the image projector. The controller performs control to prevent the sum of the area of one or more regions of the projection-target surface, on which the image projection light is projected, from exceeding a predetermined upper limit.

Abstract: An electromagnetic wave detection apparatus (10) includes an irradiator (11), a first detector (17), a memory (19), and a controller (20). The irradiator (11) irradiates electromagnetic waves. The first detector (17) includes detection elements. The detection elements detect, by irradiation position, reflected waves of the electromagnetic waves irradiated on an object (ob). The memory (19) stores first related information including an emission direction of the emitted electromagnetic waves. The controller (20) updates the first related information based on the position of the detection element, among the detection elements, that detects the reflected waves of the electromagnetic waves.

Abstract: An electromagnetic wave detection apparatus (10) includes an irradiator (11), a first detector (17), a propagation unit (20), a memory (13), and a controller (14). The irradiator (11) irradiates electromagnetic waves. The first detector (17) detects reflected waves of the electromagnetic waves irradiated onto an object (ob). The propagation unit (20) includes propagation elements (px). By irradiation position of the electromagnetic waves irradiated onto the object (ob), the propagation elements (px) switch between propagating and not propagating the reflected waves towards the first detector (17). The memory (13) stores information related to the emission direction of the electromagnetic waves. The controller (14) updates the information related to the emission direction based on the position of the propagation element (px) that is propagating the reflected waves toward the first detector (17) when the first detector (17) detects the reflected waves.

Abstract: An electromagnetic wave detection apparatus (10) includes an irradiator (11), a first detector (17), a propagation unit (20), a memory (13), and a controller (14). The irradiator (11) irradiates electromagnetic waves. The first detector (17) detects reflected waves of the electromagnetic waves irradiated onto an object (ob). The propagation unit (20) includes propagation elements (px). By irradiation position of the electromagnetic waves irradiated onto the object (ob), the propagation elements (px) switch between propagating and not propagating the reflected waves of the electromagnetic waves towards the first detector (17). The memory (13) stores related information. The controller (14) updates the related information based on the position of the propagation element (px) that is propagating the reflected waves toward the first detector (17) when the first detector (17) detects the reflected waves.

Abstract: An electromagnetic wave detection apparatus (10) includes an irradiator (11), a first detector (17), a memory (13), and a controller (14). The irradiator (11) irradiates electromagnetic waves. The first detector (17) includes detection elements. The detection elements detect, by irradiation position, reflected waves of the electromagnetic waves irradiated onto an object (ob). The memory (13) stores related information. The related information is information associating any two of the emission direction of the electromagnetic waves and elements defining two points on a path. The path refers to a path of the electromagnetic waves emitted from the irradiator (11) to the first detector (17) via the object (ob). The controller (14) updates the related information based on the emission direction of the electromagnetic waves and the position of the detection element, among the detection elements, that detects the reflected waves of the electromagnetic waves.

Abstract: An electromagnetic wave detection apparatus (10) includes a switch (16), a first detector (19), and a second detector (20). The switch (16) includes an action surface (as) with a plurality of pixels (px) disposed thereon. The switch (16) is configured to switch each pixel (px) between the first state and the second state. In the first state, the pixels (px) cause electromagnetic waves incident on the action surface (as) to travel in a first direction (dl). In the second state, the pixels (px) cause the electromagnetic waves incident on the action surface (as) to travel in a second direction (d2). The first detector (19) detects the electromagnetic waves that travel in the first direction (dl). The second detector (20) detects the electromagnetic waves that travel in the second direction (d2).

Abstract: An optical member includes a light-transmissive substrate, which includes a substrate surface, and reflecting surfaces located inside the substrate and configured to reflect at least a portion of incident light. At least a portion of the reflecting surfaces is inclined relative to the substrate surface so as to collect at least a portion of the incident light.

Abstract: A display apparatus includes an image projector and a controller. The image projector emits image projection light that projects an image onto a projection-target surface. The controller controls, in a time division manner, the emission direction of the image projection light emitted by the image projector. The controller performs control to prevent the sum of the area of one or more regions of the projection-target surface, on which the image projection light is projected, from exceeding a predetermined upper limit.

Abstract: A fixing device fixes an image on a recording medium by allowing the recording medium to pass through a nip between a pair of rotating members at least one of which is heated. The fixing device includes heaters that heat rotating members, temperature sensing elements that sense the temperature of the rotating members, and an I/O control panel. The I/O control panel calculates the amount of heat generated by the heaters based on the temperature sensed by the temperature sensing elements, and corrects calculation result according to medium information to control the heaters.

Abstract: A fixing device fixes an image on a recording medium by allowing the recording medium to pass through a nip between a pair of rotating members at least one of which is heated. The fixing device includes heaters that heat rotating members, temperature sensing elements that sense the temperature of the rotating members, and an I/O control panel. The I/O control panel calculates the amount of heat generated by the heaters based on the temperature sensed by the temperature sensing elements, and corrects calculation result according to medium information to control the heaters.