JPS557747A - Light modulator - Google Patents

Light modulator

Info

Publication number
JPS557747A
JPS557747A JP8011878A JP8011878A JPS557747A JP S557747 A JPS557747 A JP S557747A JP 8011878 A JP8011878 A JP 8011878A JP 8011878 A JP8011878 A JP 8011878A JP S557747 A JPS557747 A JP S557747A
Authority
JP
Japan
Prior art keywords
electrode
axis
crystal
width
electric field
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.)
Granted
Application number
JP8011878A
Other languages
Japanese (ja)
Other versions
JPS6212487B2 (en
Inventor
Mitsukazu Kondo
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
Nippon Electric Co Ltd
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, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8011878A priority Critical patent/JPS557747A/en
Publication of JPS557747A publication Critical patent/JPS557747A/en
Priority to US06/261,081 priority patent/US4387343A/en
Publication of JPS6212487B2 publication Critical patent/JPS6212487B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a high performance light modulator causing small fluctuations in modulation efficiency with respect to changes in temperature and incident light wavelength, by sequentially changing the ratio of width of electrode digit and spacing between adjacent electrode digits, in at least one part of screen-form electrode.
CONSTITUTION: A lithium tantalate crystal 11 is cut out in the vertical direction to X-axis, and is formed so as to transmit light in the direction of Y-axis. A screen- form electrode 12 having plural electrode digits is placed on the crystal 11, and a uniform electrode 12 is desposed on the entire back side thereof and is earthed. When a voltage is applied to the electrode 12 from a signal generator 13, the electric field in the direction of X-axis is applied to the crystal 11 periodically in the direction of Y-axis. When the ratio of the width of electrode digit and spacing between adjacent electrode digits is varied sequentially in the direction of Y-axis, the width of electric field application in X-axis gradually decreases as further advancing to both end parts of the crystal 11. By gradually decreasing the width of electric field application at the ends of the crystal in this way, fluctuations of the efficiency may be reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP8011878A 1978-06-22 1978-06-30 Light modulator Granted JPS557747A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8011878A JPS557747A (en) 1978-06-30 1978-06-30 Light modulator
US06/261,081 US4387343A (en) 1978-06-22 1981-05-06 Electrooptic light modulator including weighted interdigital electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8011878A JPS557747A (en) 1978-06-30 1978-06-30 Light modulator

Publications (2)

Publication Number Publication Date
JPS557747A true JPS557747A (en) 1980-01-19
JPS6212487B2 JPS6212487B2 (en) 1987-03-19

Family

ID=13709274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8011878A Granted JPS557747A (en) 1978-06-22 1978-06-30 Light modulator

Country Status (1)

Country Link
JP (1) JPS557747A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS617176U (en) * 1984-06-18 1986-01-17 オ−テツク電子株式会社 light beam warning device
JPS6210579U (en) * 1985-07-03 1987-01-22

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528534A (en) * 1975-07-09 1977-01-22 Hitachi Ltd Gas burner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528534A (en) * 1975-07-09 1977-01-22 Hitachi Ltd Gas burner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS617176U (en) * 1984-06-18 1986-01-17 オ−テツク電子株式会社 light beam warning device
JPS6210579U (en) * 1985-07-03 1987-01-22

Also Published As

Publication number Publication date
JPS6212487B2 (en) 1987-03-19

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