Mirror and angle detection apparatus
First Claim
1. An angle detection apparatus for detecting an angle of a specular surface, comprising:
- a slide block stressed toward an interlocking member so that rotation of the interlocking member causes the slide block to move in a direction of movement substantially perpendicular to the specular surface by an amount proportional to an amount of the rotation of the interlocking member adapted to change orientation thereof together with the specular surface so as to orient in a direction in which the specular surface is orienting;
a movable member adapted to move in the direction of movement of the slide block by an amount proportional to an amount of the movement of the slide block;
a moving amount detection unit adapted to detect the amount of movement of the movable member,a first elastic member provided between the movable member and the slide block to stress the slide block toward the interlocking member; and
a second elastic member adapted to stress the movable member toward the first elastic member,wherein the movement of the slide block causes the movable member to move in the direction of the movement of the slide block by an amount smaller than the amount of the movement of the slide block.
1 Assignment
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Accused Products
Abstract
A mirror (18) having a specular surface changeable in orientation using an actuator (16) is provided with an angle detection capability at reduced cost. A plate pivot (10) can change its orientation together with the specular surface so as to orient in a direction in which the specular surface is orienting. A slide block (20) is stressed toward the plate pivot (10) so that rotation of the plate pivot (10) causes the slide block (20) to move in a direction substantially perpendicular to the specular surface by an amount proportional to an amount of the rotation of the plate pivot (10). A magnet (26) moves in the direction of movement of the slide block (20) by an amount proportional to an amount of the movement of the slide block (20), and a magnetism sensing element (202) detects magnetism derived from the magnet (26) and outputs a signal corresponding to the amount of movement of the magnet (26).
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Citations
17 Claims
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1. An angle detection apparatus for detecting an angle of a specular surface, comprising:
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a slide block stressed toward an interlocking member so that rotation of the interlocking member causes the slide block to move in a direction of movement substantially perpendicular to the specular surface by an amount proportional to an amount of the rotation of the interlocking member adapted to change orientation thereof together with the specular surface so as to orient in a direction in which the specular surface is orienting; a movable member adapted to move in the direction of movement of the slide block by an amount proportional to an amount of the movement of the slide block; a moving amount detection unit adapted to detect the amount of movement of the movable member, a first elastic member provided between the movable member and the slide block to stress the slide block toward the interlocking member; and a second elastic member adapted to stress the movable member toward the first elastic member, wherein the movement of the slide block causes the movable member to move in the direction of the movement of the slide block by an amount smaller than the amount of the movement of the slide block.
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2. A mirror having a specular surface changeable in orientation, the mirror comprising:
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an actuator adapted to rotate the specular surface about an axis parallel with the specular surface to change the orientation of the specular surface; an interlocking member adapted to change orientation thereof together with the specular surface so as to orient in a direction in which the specular surface is orienting; a slide block stressed toward the interlocking member so that rotation of the interlocking member causes the slide block to move in a direction of movement substantially perpendicular to the specular surface by an amount proportional to an amount of the rotation of the interlocking member; a movable member adapted to move in the direction of movement of the slide block by an amount proportional to an amount of the movement of the slide block; a moving amount detection unit adapted to detect the amount of movement of the movable member; a first elastic member provided between the movable member and the slide block to stress the slide block toward the interlocking member; and a second elastic member adapted to stress the movable member toward the first elastic member, wherein the movement of the slide block causes the movable member to move in the direction of the movement of the slide block by an amount smaller than the amount of the movement of the slide block. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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10. A mirror having a mirror surface changeable in orientation, comprising:
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an interlocking member configured to change the orientation of the mirror surface; a slide block stressed toward the interlocking member so that movement of the interlocking member causes the slide block to move by a second amount proportional to a first amount of the movement of the interlocking member; a movable member stressed toward the slide block so that movement of the movement of the slide block causes the movable member to move by a third amount proportional to the second amount of the movement of the slide block; a first elastic member provided between the movable member and the slide block and configured to stress the slide block toward the interlocking member; and a second elastic member configured to stress the movable member toward the first elastic member, a moving amount detection unit configured to detect the third amount of movement of the movable member; wherein the third amount of the movement of the movable member is smaller than the second amount of the movement of the slide block. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification