Title:
光学機器および光学素子
Document Type and Number:
Japanese Patent JP7395330
Kind Code:
B2
Abstract:
To provide an optical apparatus with which it is possible to realize good visibility in an intermediate region and in a distant region.SOLUTION: The optical apparatus comprises: an optical element including a liquid crystal layer 6 provided between a plurality of zonal electrodes 1-4 and an electrode layer 5; and a control unit for causing the optical element to change between an electrically activated state and an electrically deactivated state. The plurality of zonal electrodes include a first zonal electrode 1 to a fourth zonal electrode 4, and the electrically activated state includes a first state in which the optical element has first optical power and a second state in which the optical element has second optical power smaller than the first optical power, with a first voltage applied to the first zonal electrode 1 in the first and second states, a second voltage higher than the first voltage applied to a second zonal electrode 2 in the first and second states, the first voltage applied to a third zonal electrode 3 in the first state and a third voltage higher than the first voltage applied in the second state, the second voltage applied to the fourth zonal electrode 4 in the first state and a fourth voltage higher than the second voltage applied in the second state.SELECTED DRAWING: Figure 6
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Inventors:
Kiyo Ito
Application Number:
JP2019213087A
Publication Date:
December 11, 2023
Filing Date:
November 26, 2019
Export Citation:
Assignee:
Canon Inc
International Classes:
G02C7/02; G02B3/14; G02C11/00; G02F1/13
Domestic Patent References:
| JP2015018200A | ||||
| JP2018036483A | ||||
| JP2019002977A | ||||
| JP2008089834A | ||||
| JP2016114899A | ||||
| JP5100201A |
Foreign References:
| WO2018016390A1 | ||||
| US20190302567 | ||||
| CN109856867A |
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsuya Mizumoto
Tomoya Hirayama
Atsuya Mizumoto
Tomoya Hirayama