摘要:
An image forming apparatus includes: a screen having a display surface; and a projector that renders an image by scanning light on the display screen, wherein the screen selects, independently in respective regions of the display surface, a light transmission state in which the light is transmitted and a light diffusion state in which the light is diffused, the screen being configured such that the region where address light is irradiated is in the light diffusion state and the region where the address light is not irradiated is in the light transmission state, and the projector scans the address light on the display surface such that an area of the display surface corresponding to an image displayed on the display surface changes to the light diffusion state.
摘要:
An actuator, includes: a movable plate; a supporter to support the movable plate; a pair of linking portions to link the movable plate and the supporter so as to allow the movable plate to rotate relative to the supporter; and a piezoelectric element to rotate the movable plate. The piezoelectric element elongated and contracted by an energization twists the pair of linking portions to rotate the movable plate, and each of the pair of the linking portions includes an axial member extending from the movable plate and a returned portion that links the axial member and the supporter and is formed so as to return to a side adjacent to the movable plate.
摘要:
An actuator includes a movable portion which can swing around a swing axis, a connecting portion which extends from the movable portion, and a support portion which supports the connecting portion, wherein the movable portion is formed in a cross shape which includes a pair of first protrusions protruding along a direction perpendicular to the swing axis and a pair of second protrusions protruding along a direction parallel to the swing axis, and when a length of the movable portion in the direction perpendicular to the swing axis is A, a length of the movable portion in the direction parallel to the swing axis is B, a length of the first protrusion in the direction perpendicular to the swing axis is a, and a length of the second protrusion in the direction parallel to the swing axis is b, the following equations (A) and (B) are satisfied. 0.8 × { 1 2 ( A - 1 3 A 2 + 1 B 2 ) } ≤ a ≤ 20 × { 1 2 ( A - 1 1 3 A 2 + 1 B 2 ) } ( A ) 0.8 × { 1 2 ( B - 1 1 3 A 2 + 1 B 2 ) } ≤ b ≤ 2.0 × { 1 2 ( B - 1 3 A 2 + 1 B 2 ) } ( B )
摘要翻译:致动器包括可绕摆动轴线摆动的可动部分,从可动部分延伸的连接部分和支撑连接部分的支撑部分,其中可动部分形成十字形状,其包括一对第一 沿着与摆动轴线垂直的方向突出的突起和沿着与摆动轴平行的方向突出的一对第二突起,当可动部在与摆动轴线垂直的方向上的长度为A时, 在与摆动轴平行的方向上的部分为B,第一突起在与摆动轴线垂直的方向上的长度为a,第二突起在与摆动轴平行的方向上的长度为b,以下的式 (A)和(B)。 0.8×{1 2(A - 1 3 A 2 + 1 B 2)}≤a≤20×{1 2(A - 1 1 3 A 2 + 1 B 2)}(A)0.8×{1 (B-1 1 3 A 2 + 1 B 2)}≤b≤2.0×{1 2(B-1 3 A 2 + 1 B 2)}(B)
摘要:
An optical device includes: a movable plate disposed in a distribution range of light input from outside, and having alight reflecting surface adapted to reflect the light; a shaft member adapted to support the movable plate so that the movable plate can swing around a predetermined axis; a ferromagnetic member provided to the movable plate; and a drive section configured to generate electromagnetic force between the drive section and the ferromagnetic member to thereby swing the movable plate, wherein a portion of the drive section, included in the distribution range of the light, is formed of a surface having a normal vector with which the light is reflected to outside of a predetermined range.
摘要:
An actuator includes: a frame; first members at each end of the frame along a first axis making the frame rotatable thereabout; second members supporting each end of a movable plate against the frame along a second axis making the movable plate rotatable thereabout; first magnets with poles interposing the first axis; a second magnet with poles interposing the first axis; a coil generating a magnetic force acting on the first and second magnets; and a voltage source applying a voltage to the coil. The first and second magnets have an angle of 30-60 degrees to the first axis, and identical magnetic pole directions. The voltage source includes first and second voltage generators generating first and second voltages of first and second frequencies, and a voltage superimposer. The movable plate is rotated about the first and second axes at the first and second frequencies by the superimposed voltages.
摘要:
An optical device includes: a movable plate disposed in a distribution range of light input from outside, and having alight reflecting surface adapted to reflect the light; a shaft member adapted to support the movable plate so that the movable plate can swing around a predetermined axis; a ferromagnetic member provided to the movable plate; and a drive section configured to generate electromagnetic force between the drive section and the ferromagnetic member to thereby swing the movable plate, wherein a portion of the drive section, included in the distribution range of the light, is formed of a surface having a normal vector with which the light is reflected to outside of a predetermined range.
摘要:
An optical scanner includes: a light reflecting section having light reflectivity; a movable section which includes the light reflecting section and can be displaced; two link sections connected to positions of ends of the movable section, the positions facing each other; a supporting section supporting the link sections; and a displacement providing section turning the two link sections, wherein each link section includes a turnable drive section, and a shaft section connecting the movable section and the drive section and bending in a thickness direction of the movable section by turning of the drive section.
摘要:
An optical device includes: a movable plate disposed in a distribution range of light input from outside, and having a light reflecting surface adapted to reflect the light; a shaft member adapted to support the movable plate so that the movable plate can swing around a predetermined axis; a permanent magnet associated with the movable plate; and a coil generating an electromagnetic force to swing the movable plate. An upper surface of the coil is opposite to the permanent magnet, and the upper surface of the coil is formed as a plane having a predetermined angle with respect to a plane parallel to the movable plate
摘要:
A light deflector includes: a movable plate; an elastic support section having a first end coupled to the movable plate and adapted to support the movable plate rotatably around a predetermined axis; a support member coupled to a second end of the elastic support section; and a light absorbing section having a light absorbing property, wherein the elastic support section has an upper surface, a lower surface, and at least one side surfaces, each of the side surfaces being formed of one or more tilted surfaces existing outside either one of the upper surface and the lower surface, and the light absorbing section is disposed on the upper surface and the at least one side surfaces of the elastic support section.
摘要:
An actuator includes: a first vibration system including a driving member having a frame shape, and a pair of first axial members each one end of which supports the driving member so as to allow the driving member to rotate about an X-axis; a second vibration system including a movable plate provided inside the driving member, and a pair of second axial members each one end of which supports the movable plate so as to allow the movable plate to rotate about a Y-axis perpendicular to the X-axis; a driving unit including a ferromagnetic member, a coil generating a magnetic field on the ferromagnetic; and a positioning portion that places the ferromagnetic member or the coil symmetrical with respect to an intersection point of the X and Y-axes.