US 12,282,156 B2
Light control system and optical reflection element
Takami Ishida, Osaka (JP); Kazuki Komaki, Osaka (JP); and Ryouichi Takayama, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Apr. 27, 2022, as Appl. No. 17/660,843.
Application 17/660,843 is a continuation of application No. PCT/JP2020/040603, filed on Oct. 29, 2020.
Claims priority of application No. 2019-214458 (JP), filed on Nov. 27, 2019.
Prior Publication US 2022/0252869 A1, Aug. 11, 2022
Int. Cl. G02B 26/10 (2006.01); G02B 26/12 (2006.01)
CPC G02B 26/105 (2013.01) [G02B 26/121 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A light control system comprising:
an optical reflection element that reflects and reciprocally moves light; and
a controller that controls the optical reflection element,
the optical reflection element including:
a base;
a reflector that reflects the light; and
a first swing portion and a second swing portion each of which is disposed along a first axis and at a respective one of positions sandwiching the reflector and swings the reflector,
each of the first swing portion and the second swing portion including:
a first connection portion that is disposed along the first axis and has a tip end coupled to the reflector;
a first vibration portion that extends along a direction intersecting the first axis and is coupled to a base end of the first connection portion;
a second vibration portion that extends in a direction intersecting the first axis and on an opposite side of the first vibration portion with respect to the first axis and is coupled to the base end of the first connection portion;
a first drive portion that extends along the first axis, has a base end coupled to a tip end of the first vibration portion, and causes, via the first vibration portion, the first connection portion to operate;
a second drive portion that extends along the first axis, has a base end coupled to a tip end of the second vibration portion, and causes, via the second vibration portion, the first connection portion to operate; and
a second connection portion that connects the first vibration portion and the second vibration portion to the base in a vibratory manner,
wherein when the controller causes the first drive portion and the second drive portion of the first swing portion to vibrate in a same phase, the controller causes the first drive portion and the second drive portion of the second swing portion to vibrate in a same phase that is an opposite phase to the same phase of the first swing portion.