Abstract: A wear computing system (100, 200, 300) for computing a wear of a wheel (3) of a vehicle (2) comprises a revolution sensor (48) configured to detect a number of revolutions of the wheel (3), an acceleration sensor (49) configured to detect an acceleration of the vehicle (2) in a travel direction thereof, and a control unit (7) configured to compute a travel distance of the vehicle from the acceleration of the vehicle, and compute the wear from the travel distance and the number of revolutions of the wheel (3).

Abstract: A headlight device includes an optical unit to emit light and a support mechanism to support the optical unit. The optical unit includes supported pins as a first supported part and supported groove parts as a second supported part. The support mechanism includes support groove parts as a first support part that is provided on a first straight line in a predetermined first direction and contacts the supported pins and support pins as a second support part that is provided on a second straight line in a second direction orthogonal to the first direction and contacts the supported groove parts. The support mechanism supports the optical unit to be freely rotatable around the first straight line passing through the support groove parts and freely rotatable around the second straight line passing through the support pins.

Abstract: An illumination device includes a light source unit that emits light, a first optical unit that lets the light enter and changes a divergence angle of the entered light, a second optical unit including an image light formation unit that lets the light with the changed divergence angle enter and emits light including image light having image information, and a drive unit that moves the first optical unit and the second optical unit.

Abstract: A light irradiation device includes a light source, an optical member and a sensor. The light source emits light. The optical member is supported so as to rotate around a rotation axis and includes a prism part that emits detection light based on the light. The sensor receives the detection light and detects a light amount of the detection light. The light amount of the detection light received by the sensor changes depending on a position of the optical member in a rotation direction when the optical member rotates.

Abstract: A headlight module includes a first light source that emits first light, and a first optical unit. The first optical unit includes a first optical surface that reflects the first light, and a lens surface that projects illuminating light including the first light reflected by the first optical surface. An edge part of the first optical surface close to the lens surface includes a first edge part and a second edge part differing from each other in a position in a direction orthogonal to an optical axis of the lens surface, and a position of the second edge part in a direction of the optical axis is closer to the lens surface than a position of the first edge part in the direction of the optical axis.

Abstract: A headlight module includes: a light source for emitting light; a condensing optical element for concentrating the light; and an optical element including an incident surface for receiving the concentrated light, a reflecting surface for reflecting the received light, and an emitting surface for emitting the reflected light. The condensing optical element changes a divergence angle of the light to form a light distribution pattern. The reflected light and light that enters the optical element and is not reflected by the reflecting surface are superposed on a plane including a point located at a focal position of the emitting surface in a direction of an optical axis of the emitting surface and being perpendicular to the optical axis, thereby forming a high luminous intensity region in the light distribution pattern on the plane. The emitting surface has positive refractive power and projects the light distribution pattern formed on the plane.

Abstract: A manufacturing apparatus for a drive disk includes: an upper member and a lower member each including a base and protrusions. Each protrusion is defined by a plurality of surfaces including a first side surface inclined with respect to opposed surfaces of the drive disk and a second side surface parallel to the opposed surfaces. The first side surface of the protrusion of the upper member and the first side surface of the protrusion of the lower member are parallel to each other and face away from each other. The second side surface of the protrusion of the upper member and the second side surface of the protrusion of the lower member face away from each other. The first side surface of the protrusion of the upper member and the first side surface of the protrusion of the lower member come into contact with each other to form the slot.

Abstract: A headlight module includes: a light source for emitting light; a condensing optical element for concentrating the light; and an optical element including an incident surface for receiving the concentrated light, a reflecting surface for reflecting the received light, and an emitting surface for emitting the reflected light. The condensing optical element changes a divergence angle of the light to form a light distribution pattern. The reflected light and light that enters the optical element and is not reflected by the reflecting surface are superposed on a plane including a point located at a focal position of the emitting surface in a direction of an optical axis of the emitting surface and being perpendicular to the optical axis, thereby forming a high luminous intensity region in the light distribution pattern on the plane. The emitting surface has positive refractive power and projects the light distribution pattern formed on the plane.

Abstract: Drive disks are configured to rotate a main wheel by applying a frictional force thereto. Each of the drive disks includes a base and a plurality of rollers. The base includes a first sheet metal member and a second sheet metal member. The first sheet metal member includes a first central part and a plurality of first arm parts. The second sheet metal member includes a second central part and a plurality of second arm parts. Each of the rollers has a first end and a second end in an axial direction thereof. Each of the first arm parts and each of the second arm parts support the first end of one of two rollers adjacent to each other and the second end of the other of the two rollers adjacent to each other.

Abstract: An illumination device includes a light source, a pair of wedge prisms, and a driving portion. The pair of wedge prisms deflect incident light. The driving portion includes a gear and a gear, and causes the pair of wedge prisms to rotate about a rotation axis by using the gear and the gear. The pair of wedge prisms include a wedge prism held by a barrel and a wedge prism held by a barrel. The barrel is disposed inside the barrel. A gear whose center axis is the rotation axis is provided on an outer periphery of the barrel. A gear whose center axis is the rotation axis is provided on an inner periphery of the barrel. The gear is disposed on an outer peripheral side of the gear and meshes with the gear. The gear is disposed on an inner peripheral side of the gear and meshes with the gear.

Abstract: A light irradiation device includes a light source, an optical member and a sensor. The light source emits light. The optical member is supported so as to rotate around a rotation axis and includes a prism part that emits detection light based on the light. The sensor receives the detection light and detects a light amount of the detection light. The light amount of the detection light received by the sensor changes depending on a position of the optical member in a rotation direction when the optical member rotates.

Abstract: A light irradiation device includes a light source, a projection optical system, wedge prisms, and an aberration correction surface. The projection optical system projects an image formed based on light emitted from the light source. The aberration correction surface corrects an aberration occurring when the image is projected by the projection optical system. The wedge prism deflects the light emitted from the projection optical system. The wedge prism deflects the light deflected by the wedge prism. The wedge prisms are held so that a deflection direction of light emitted from the wedge prism is changed by rotation of at least one of the wedge prisms. The aberration correction surface is on the wedge prism side with respect to an emission surface of the projection optical system, and is located on the projection optical system side, with respect to the wedge prism, including an incidence surface of the wedge prism.

Abstract: A headlight module includes a light source, a light distribution control element and a projection optical element. The light source emits light. The light distribution control element forms a light distribution pattern by changing a divergence angle of the light incident therein. The projection optical element projects the light distribution pattern. The light distribution control element includes a first light distribution formation part configured to form a high luminosity region in the light distribution pattern and a second light distribution formation part configured to form a low luminosity region in the light distribution pattern. The low luminosity region is lower in luminosity than the high luminosity region.

Abstract: A headlight module includes: a light source for emitting light; a condensing optical element for concentrating the light; and an optical element including an incident surface for receiving the concentrated light, a reflecting surface for reflecting the received light, and an emitting surface for emitting the reflected light. The condensing optical element changes a divergence angle of the light to form a light distribution pattern. The reflected light and light that enters the optical element and is not reflected by the reflecting surface are superposed on a plane including a point located at a focal position of the emitting surface in a direction of an optical axis of the emitting surface and being perpendicular to the optical axis, thereby forming a high luminous intensity region in the light distribution pattern on the plane. The emitting surface has positive refractive power and projects the light distribution pattern formed on the plane.

Abstract: An illumination device including: a light source including a light emitting element that emits light; a first optical element that transmits the light; a second optical element that transmits the light transmitted by the first optical element; a holder that holds the second optical element; and a spring member including at least one spring portion that generates spring force by being deflected, the spring member pressing the second optical element against the holder with the spring force to hold the second optical element against the holder, wherein the first optical element and the second optical element deflect a center portion in a long edge direction of the at least one spring portion with respect to ends in the long edge direction of the at least one spring portion.

Abstract: A headlight module for projecting a light distribution pattern includes: a light source for emitting light; and an optical element including a first reflecting surface for reflecting the light as first reflected light, a second reflecting surface for reflecting, as second reflected light, light passing through a traveling direction side of an edge portion of the first reflecting surface, a first emitting surface for emitting the first reflected light, and a second emitting surface for emitting the second reflected light, the traveling direction side being a side toward which the first reflected light travels. The edge portion is an edge portion on the traveling direction side. The first reflecting surface forms a high luminous intensity region of the light distribution pattern by superposing the first reflected light and light that has not been reflected by the first reflecting surface, and forms a cutoff line of the light distribution pattern.

Abstract: A headlight module for projecting a light distribution pattern includes: a first source for emitting first light; a second source for emitting second light; an element including a first guide for guiding the first light and a second guide for guiding the second light; and a condensing element for concentrating the second light. An emitting surface of the element includes first and second regions. The first light is emitted from the regions. The second light is emitted from the second region. The second region side of the second guide is connected to the first guide. The first light guided by the first guide enters the second guide. The pattern includes a pattern formed at a light concentration position of the condensing element. The second guide includes an incident surface. A focal position of the emitting surface and a focal position of the incident surface coincide with the light concentration position.

Abstract: A headlight module includes a light source, a light guide element, and a projection optical element. The light source emits light. The light guide element has a reflecting surface for reflecting light emitted from the light source and an emitting surface for emitting light reflected by the reflecting surface. The projection optical element projects light emitted from the emitting surface. In a direction of an optical axis of the projection optical element, an end portion on the emitting surface side of the reflecting surface includes a point located at a focal position of the projection optical element.

Abstract: A headlight module includes: a light source for emitting light; a condensing optical element for concentrating the light; and an optical element including an incident surface for receiving the concentrated light, a reflecting surface for reflecting the received light, and an emitting surface for emitting the reflected light. The condensing optical element changes a divergence angle of the light to form a light distribution pattern. The reflected light and light that enters the optical element and is not reflected by the reflecting surface are superposed on a plane including a point located at a focal position of the emitting surface in a direction of an optical axis of the emitting surface and being perpendicular to the optical axis, thereby forming a high luminous intensity region in the light distribution pattern on the plane. The emitting surface has positive refractive power and projects the light distribution pattern formed on the plane.

Abstract: A headlight module includes: a light source that emits light; a projection lens that receives and emits the light; a holder including a flexible portion having a length in a direction of an optical axis of the lens and having a fixed end and a movable end, the holder holding the lens movably relative to the light source by holding the lens with the movable end; and a driver that moves the lens. The lens is translated on a plane perpendicular to the axis due to deflection of the flexible portion. The holder includes first and second flexible portions including plate-like portions parallel to the axis and perpendicular to each other. One end of the first flexible portion is the fixed end. Another end of the first flexible portion is connected to one end of the second flexible portion. Another end of the second flexible portion is the movable end.