Deflector

Patent metadata

Field	Value
Publication number	US-10114212-B2
Application number	US-201313899077-A
Country	US
Kind code	B2
Filing date	May 21, 2013
Priority date	May 29, 2012
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

The present application discloses a deflector including a substrate portion, a movable portion, a reflective portion, a support portion, and a moving mechanism. The movable portion is supported by a first end of the support portion. A second end of the support portion is supported by the substrate portion. An end of the movable portion is capable of coming into contact with the substrate portion. The reflective portion is formed on the movable portion. The moving mechanism is capable of driving the movable portion so as to bring the movable portion into at least any one of a first state, a second state, a third state, and a fourth state.

First claim

What is claimed is:

1. A deflector comprising:
a substrate portion;
a swing portion;
a reflective portion;
a support portion; and
an electrostatic or magnetic drive mechanism; and
a biasing mechanism, wherein
the swing portion is swingably placed on a first end of the support portion,
a second end of the support portion is fixed to the substrate portion,
the reflective portion is formed on the swing portion,
the electrostatic or magnetic drive mechanism has a component configured to apply torque around a swing axis to the swing portion,
the biasing mechanism is configured to bias the swing portion toward the support portion, at least when force in a separating direction from the support portion acts on the swing portion,
the biasing mechanism is any one of a first biasing mechanism and a second biasing mechanism,
the first biasing mechanism includes an insulator provided on at least one of the support portion and the swing portion, and voltage applying mechanism for applying a voltage between the support portion and the swing portion, and biases the swing portion toward the support portion by utilizing electrostatic force,
the second biasing mechanism includes a magnet provided on the swing portion, and a magnetic material provided on the support portion, and biases the swing portion toward the support portion by utilizing magnetic force.

2. The deflector according to claim 1 , wherein
a convex portion is formed on a part, abutting on the movable portion, of the support portion, and
a concave portion is formed on a part, abutting on the support portion, of the movable portion.

3. A deflector comprising:
a substrate portion;
a swing portion;
a reflective portion;
a support portion;
an electrostatic or magnetic drive mechanism; and
a biasing mechanism, wherein
a first end of the support portion is fixed to the swing portion,
a second end of the support portion is swingably placed on the substrate portion,
the reflective portion is formed on the swing portion,
the electrostatic or magnetic drive mechanism has a component configured to apply torque around a swing axis to the swing portion,
the biasing mechanism is configured to bias the support portion toward the substrate portion, at least when force in a separating direction from the substrate portion acts on the support portion,
the biasing mechanism is any one of a third biasing mechanism, a fourth biasing mechanism, and a fifth biasing mechanism,
the third biasing mechanism includes an insulator provided on at least one of the substrate portion and the support portion, and voltage applying means for applying a voltage between the substrate portion and the support portion, and biases the support portion toward the substrate portion by utilizing electrostatic force,
the fourth biasing mechanism includes a magnet provided on the support portion, and a magnetic material provided on the substrate portion, and biases the support portion toward the substrate portion by utilizing magnetic force, and
the fifth biasing mechanism includes an adhesive bonding the abutting portions of the substrate portion and the support portion together, and biases the support portion toward the substrate portion by utilizing restoring force of the adhesive, when the force of separating the support portion from the substrate portion acts.

4. The deflector according to claim 3 , wherein
a convex portion is formed on a part, abutting on the substrate portion, of the support portion, and
a concave portion is formed on a part, abutting on the support portion, of the substrate portion.

5. A deflector comprising:
a substrate portion;
a movable portion supported at a support point, a position thereof with respect to the substrate portion being substantially fixed, so as to be swingable relative to three axes of a pitch axis, a roll axis and a yaw axis;
a reflective portion formed on the movable portion such that a reflective surface thereof is orthogonal to the yaw axis; and
an electrostatic or magnetic drive mechanism having a component configured to rotationally drive the movable portion about the yaw axis such that a contact edge of the movable portion is brought into contact with a surface of the substrate portion, wherein
the movable portion has a shape such that a distance from the support point to the contact edge changes according to a phase angle.

6. The deflector according to claim 5 , wherein
the movable portion has a shape such that a distance from the support point to the contact edge in a direction orthogonal to the yaw axis changes according to the phase angle.

7. The deflector according to claim 6 , wherein
the contact edge of the movable portion has any one of a first contact edge shape, a second contact edge shape, and a third contact edge shape,
the first contact edge shape is such that the contact edge of the movable portion is an oval, a center thereof being the support point when viewed on a plane orthogonal to the yaw axis,
the second contact edge shape is such that the contact edge of the movable portion is a circle, a center thereof being at a position offset from the support point when viewed on the plane orthogonal to the yaw axis, and
the third contact edge shape is such that the contact edge of the movable portion is a polygon, a center thereof being the support portion when viewed on the plane orthogonal to the yaw axis.

8. The deflector according to claim 5 , wherein
the movable portion has a shape such that a distance from the reflective surface to the contact edge in a yaw axis direction changes according to the phase angle.

9. The deflector according to claim 5 , further comprising
a movable portion-side support portion having an upper end fixed to the movable portion, wherein
a support point is provided on a lower end of the movable portion-side support portion.

10. A deflector comprising:
a substrate portion;
a swing portion supported at a support point, a position thereof with respect to the substrate portion being substantially fixed, so as to be swingable relative to at least two axes parallel to the substrate portion in;
a reflective portion formed on the swing portion;
an electrostatic or magnetic drive mechanism having a component configured to cause the swing portion to swing, and causing a contact edge of the swing portion to abut on a contact surface of the substrate portion at a desired azimuth angle; and
an actuator having a component configured to adjust a distance from the support point to the contact surface in a direction orthogonal to the substrate portion.

11. The deflector according to claim 10 , further comprising
a support member supported by the substrate portion and provided with a support point on an end in the direction orthogonal to the substrate portion, wherein
the actuator adjusts a protrusion amount of the support point from the substrate portion.

12. The deflector according to claim 10 , further comprising
a contact member supported by the substrate portion and formed with a contact surface, wherein
the actuator adjusts a protrusion amount, from the substrate portion, of the contact surface, on which the contact edge of the swing portion abuts.

Assignees

• Aoyagi Isao
• Murata Kanae
• Ozaki Takashi
• Fujitsuka Norio
• Nonomura Yutaka
• Akashi Teruhisa
• Toyota Chuo Kenkyusho Kk

Inventors

• Aoyagi Isao
• Murata Kanae
• Ozaki Takashi
• Fujitsuka Norio
• Nonomura Yutaka
• Akashi Teruhisa

Classifications

• G02B26/085

  the reflecting means being moved or deformed by electromagnetic means · CPC title

• G02B6/3512

  the optical element being reflective, e.g. mirror · CPC title

• G02B7/1821

  for rotating or oscillating mirrors · CPC title

• G02B26/0841 Primary

  the reflecting element being moved or deformed by electrostatic means · CPC title

• H04N1/113

  using oscillating or rotating mirrors · CPC title