Abstract: An optical device includes: an optical portion that has a light incident surface on which light is incident; a movable portion that supports the optical portion; a shaft portion that supports the movable portion so that the movable portion is oscillatable; and a fixing portion that is connected to the shaft portion, wherein the fixing portion has a thickness greater than the shaft portion and includes a portion of which an end not connected to the shaft portion serves as a free end.

Abstract: Provided is an optical scanner including a first movable portion provided with a light reflecting portion, a second movable portion in which the first movable portion is positioned on an inner side, a first axis portion that connects the first movable portion and the second movable portion to one another and oscillatably supports the first movable portion around a first axis, a second axis portion that is connected to the second movable portion and oscillatably supports the second movable portion around a second axis that intersects the first axis, and an elastic portion provided in the second axis portion, in which the second axis portion has a hole and the elastic portion is disposed in the hole.

Abstract: An optical device unit that can operate very quietly and an image display apparatus having the optical device unit are provided. An optical device unit includes an optical device and a coupler joined to the optical device. The optical device includes an optical portion that is shaped as a plate and has a light incident surface on which light is incident, a movable portion that supports the optical portion, pivot portions that support the movable portion, and a support portion that supports the pivot portions. The support portion includes connection portions to which the pivot portions are connected and the connection portions are located away from the coupler.

Abstract: Provided is an optical scanner including a movable portion, a frame body portion, a first axis portion that connects the movable portion and the frame body portion and oscillatably supports the movable portion around a first oscillation axis, a support portion, and a second axis portion that connects the frame body portion and the support portion and oscillatably supports the frame body portion around a second oscillation axis, in which, when a distance between an end portion of the movable portion in a direction following the second oscillation axis and the frame body portion is defined as L1, and a distance between an end portion of the frame body portion in a direction following the first oscillation axis and the support portion is defined as L3, a relationship corresponding to 1<L1/L3<5 is satisfied.

Abstract: An optical device includes: an optical portion that has a light incident surface on which light is incident; a movable portion that includes a disposition surface on which the optical portion is disposed and a concave disposition portion; and a shaft portion that supports the movable portion so that the movable portion is oscillatable, wherein a portion in which the disposition surface is not formed is included between the optical portion and the shaft portion in a plan view in a normal line direction of the light incident surface.

Abstract: A projector includes a light source, liquid crystal panels that modulate light emitted from the light source, a dichroic prism that combines modulated light fluxes modulated by the liquid crystal panels with one another into video light and outputs the video light, and a pixel shift device that changes the optical path of the video light output from the dichroic prism. The pixel shift device includes a glass plate on which the video light is incident and an electromagnetic actuator that causes the glass plate to swing. The electromagnetic actuator is arranged in a position outside the dichroic prism and different from the positions of the liquid crystal panels when viewed along the optical axis of the video light.

Abstract: An optical device includes a movable unit that supports a glass plate, axis portions that swingably support the movable unit around a swing axis, a support unit that supports the axis portions and, a permanent magnet that is provided in the movable unit, and a coil that is disposed to face the permanent magnet, and a coil support unit that is supported by the support unit and supports the coil. A conductive wire is wound around the coil and a drawn wire is drawn from the side of the inner circumference of the coil. The coil support unit includes a through hole overlapping the inner circumference of the coil and the drawn wire is inserted through the through hole.

Abstract: An optical device includes a glass plate, a movable unit that supports the glass plate, axis portions that swingably support the movable unit around a swing axis, a support unit that supports the axis portions and, a permanent magnet that is provided in the movable unit, and coils that are disposed to face the permanent magnet and generate a magnetic field to be applied to the permanent magnet. The movable unit includes a through hole that the permanent magnet is inserted into and a protrusion portion that protrudes inside the through hole to support the permanent magnet.

Abstract: An optical device includes a glass plate, a movable section that supports the glass plate, a shaft section that supports the movable section so as to be swingable around the swing axis, a support section that supports the shaft section, a permanent magnet that is provided in the movable section and is thinner than the glass plate, and a pair of coils that are disposed opposite to each other with the permanent magnet interposed therebetween. The movable section includes thin wall portions that are thinner than the glass plate. The permanent magnet is disposed in the thin wall portions. In side view, the surface of each of the coils on the permanent magnet side is located between both the main surfaces of the glass plate.

Abstract: A member for an optical scanner includes: a functional portion including a movable portion, a shaft portion oscillatably supporting the movable portion, and a support portion supporting the shaft portion; a wiring line provided on the movable portion; and a structure provided on the functional portion and thicker than the wiring line; the wiring line and the structure are provided on a first major surface of the functional portion.

Abstract: In accordance with the present invention, there is provided a method for producing colored tofu, the method comprising a step of preparing a liquid dispersion constituted by a colorant and a paste or powder of vegetables or fruit uniformly dispersed in sugar alcohol or a dilute aqueous solution thereof; a step of preparing a liquid soy milk mixture by uniformly mixing the liquid dispersion, soy milk, and a coagulating agent; and a step of coagulating the liquid soy milk mixture to produce tofu.

Abstract: An optical scanner includes: a movable plate which includes a light reflection unit; a first torsion bar spring which oscillatably supports the movable plate around a first axis; a displacement portion which is connected to the first torsion bar spring; a second torsion bar spring which oscillatably supports the displacement portion around a second axis intersecting with the first axis; a permanent magnet which is provided on the displacement portion to be inclined with respect to the first axis and the second axis; and a coil which is provided to be separated from the displacement portion and generates a magnetic field acting on the permanent magnet. The displacement portion includes a frame surrounding the movable plate, and a damper which has a smaller thickness than that of the frame and extends in a direction intersecting with a direction in which the second torsion bar spring extends from the frame.

Abstract: An optical scanner includes: a movable plate which includes a light reflection unit which reflects light; a first torsion bar spring which oscillatably supports the movable plate around a first axis; a displacement member which is connected to the first torsion bar spring; a second torsion bar spring which oscillatably supports the displacement member around a second axis intersecting with the first axis; a coil provided on the displacement member; and a magnet which is provided spaced apart from the displacement member, and generates a magnetic field to be inclined with respect to the first axis and the second axis and to act on the coil, wherein the displacement member includes a frame surrounding the movable plate, and a damper which has a smaller thickness than that of the frame and extends in a direction intersecting with a direction in which the second torsion bar spring extends from the frame.

Abstract: An optical device includes: a movable section capable of swinging about a first axis; a frame body section capable of swinging about a second axis crossing the first axis; a first shaft section configured to connect the movable section and the frame body section; and a light reflection plate fixed to the movable section and provided with a light reflecting section having light reflectivity, wherein in plan view from a thickness direction of the light reflection plate, a center of gravity of the light reflection plate is shifted from the first axis.

Abstract: An optical device includes an optical section, a moving section, a shaft section, and an actuator. The optical section includes a light-incident surface on which light is incident. The moving section supports the optical section and the shaft section swingably supports the moving section. The actuator swings the moving section based on a drive signal having a trapezoidal waveform. A swing waveform representative of a trajectory of the moving section as the moving section is swung has a trapezoidal waveform. A maintenance time of a flat portion of the trapezoidal waveform of the drive signal is shorter than a maintenance time of a flat portion of the trapezoidal waveform of the swing waveform of the moving section.

Abstract: A head-mounted image display apparatus includes: a light source that emits laser light; a splitter that splits the laser light into first laser light and second laser light having a different optical intensity than the first laser light; an image drawing section that causes the first laser light to be reflected off a mirror and causes the mirror to make pivotal motion to perform image drawing; a controller that controls the pivotal motion of the mirror; and a notification section that notifies other persons by diffusing the second laser light that the image drawing section is performing image drawing.

Abstract: An optical device includes a glass plate, a movable section adapted to support the glass plate, shaft sections adapted to support the movable section so as to be able to oscillate around an oscillation axis, a support section adapted to support the shaft sections, a permanent magnet provided to the movable section, and a coil disposed so as to be opposed to the permanent magnet, and generating a magnetic field acting on the permanent magnet, and the support section has a window section through which a gap between the permanent magnet and the coil can visually be recognized.

Abstract: An optical device includes: an optical section that includes a light-incident surface on which light is incident; a moving section that supports the optical section; a shaft section that swingably supports the moving section around a swing axis; a permanent magnet that is provided in the moving section; an air core coil that is provided so as to face the moving section, and generates an electric field acting on the permanent magnet; and a coil holding member that is provided on a side opposite to the permanent magnet of the air core coil, and holds the air core coil, wherein the coil holding member includes a window section, and wherein an edge section of the air core coil is viewable through the window section.

Abstract: An optical device includes: an optical unit that is configured as a plate and includes a light incidence face on which light is incident; a support unit that includes a recessed arrangement portion in which the optical unit is arranged; and a first shaft portion and a second shaft portion that support the support unit in a manner which enables the support unit to oscillate, wherein a side face of the arrangement portion is separated from the optical unit between the optical unit and the first shaft portion and between the optical unit and the second shaft portion.

Abstract: An optical scanner includes a movable section, first shaft sections configured to support the movable section to be capable of swinging, a driving section configured to support the first shaft sections, second shaft sections configured to support the driving section to be capable of swinging, a supporting section configured to support the second shaft sections, and an elastic section having a modulus of elasticity lower than the modulus of elasticity of the second shaft sections. In plan view, the elastic section is fixed in a region different from a region on a first imaginary straight line of the supporting section and is in contact with the second shaft sections.