JPS6440927A - Polarization controller - Google Patents

Polarization controller

Info

Publication number
JPS6440927A
JPS6440927A JP19765187A JP19765187A JPS6440927A JP S6440927 A JPS6440927 A JP S6440927A JP 19765187 A JP19765187 A JP 19765187A JP 19765187 A JP19765187 A JP 19765187A JP S6440927 A JPS6440927 A JP S6440927A
Authority
JP
Japan
Prior art keywords
ultrasonic motors
wavelength plate
rotors
rotor
ultrasonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19765187A
Other languages
Japanese (ja)
Inventor
Haruhito Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP19765187A priority Critical patent/JPS6440927A/en
Publication of JPS6440927A publication Critical patent/JPS6440927A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

PURPOSE:To eliminate the need for a transmission system and to perform accurate polarization control by installing a wavelength plate inside the rotor of an ultrasonic motor with a ring-shaped rotor and rotating the wavelength plate together by the rotation of the rotor. CONSTITUTION:This controller is equipped with 1st and 2nd ultrasonic motors 101 and 103 which are installed on a motor support base 100 and 1st and 2nd power sources 107 and 108 which supply electric power to the ultrasonic motors 101 and 103 respectively, and the ultrasonic motors 101 and 103 are a ring type and have their centers of rotation aligned with each other. A 1/4 wavelength plate 102 and a 1/2 wavelength plate 104 are fixed inside the rotors of the ultrasonic motors 101 and 103 respectively and rotate together with the rotors. The rotational positions of the rotors of the ultrasonic motors 101 and 103 are controlled with voltages applied from the power sources 107 and 108. Consequently, a transmission system such as a gear and a belt is not necessary, and accurate polarization control is enabled.
JP19765187A 1987-08-07 1987-08-07 Polarization controller Pending JPS6440927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19765187A JPS6440927A (en) 1987-08-07 1987-08-07 Polarization controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19765187A JPS6440927A (en) 1987-08-07 1987-08-07 Polarization controller

Publications (1)

Publication Number Publication Date
JPS6440927A true JPS6440927A (en) 1989-02-13

Family

ID=16378043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19765187A Pending JPS6440927A (en) 1987-08-07 1987-08-07 Polarization controller

Country Status (1)

Country Link
JP (1) JPS6440927A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007043782A (en) * 2005-08-01 2007-02-15 Toyo Electric Corp Ac power controller
JP5105567B1 (en) * 2012-04-19 2012-12-26 信越エンジニアリング株式会社 Photo-alignment irradiation device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111609A (en) * 1982-12-17 1984-06-27 Nippon Kogaku Kk <Nikon> Lens barrel
JPS62127704A (en) * 1985-11-28 1987-06-10 Nippon Telegr & Teleph Corp <Ntt> Polarized wave controlling circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111609A (en) * 1982-12-17 1984-06-27 Nippon Kogaku Kk <Nikon> Lens barrel
JPS62127704A (en) * 1985-11-28 1987-06-10 Nippon Telegr & Teleph Corp <Ntt> Polarized wave controlling circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007043782A (en) * 2005-08-01 2007-02-15 Toyo Electric Corp Ac power controller
JP5105567B1 (en) * 2012-04-19 2012-12-26 信越エンジニアリング株式会社 Photo-alignment irradiation device
WO2013157113A1 (en) * 2012-04-19 2013-10-24 信越エンジニアリング株式会社 Photo-orienting illumination device
KR101462273B1 (en) * 2012-04-19 2014-11-17 가부시키가이샤 에프케이 코우카쿠 겐큐쇼 Light illuminating apparatus for photo-alignment

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