Optical device and electronic device
AssigneeSeiko Epson Corporation
InventorsTomonori Matsushita, Teruyuki Nishimura, Nozomu Hirokubo
Life of this patent
Estimating the term…
Abstract
An optical device includes an optical member having a plurality of first optical layers and a plurality of second optical layers having a refractive index different from that of the first optical layer in which the first optical layers and the second optical layers are laminated, and a layer thickness changing electrode that changes a thickness of the first optical layer in a lamination direction of the first optical layers and the second optical layers, in which the optical member is provided in a pair, and the pair of optical members is disposed to face each other through a gap, and a gap changing driver that changes a dimension of the gap.
Claims7
An optical device comprising:
- a pair of optical members that face each other across a gap;
- a gap changing driver that is configured to change a dimension of the gap,
- wherein each of the optical members has a plurality of first optical layers and a plurality of second optical layers that are alternately laminated, the second optical layers each having a refractive index different from that of each of the first optical layers;
- each optical member has a respective layer thickness changing actuator that changes a thickness of the first optical layer in a lamination direction of the plurality of first optical layers and the plurality of second optical layers,
- and
- the gap changing driver is separate and apart from the respective layer thickness changing actuators.
An optical device comprising:
- a pair of optical members that are attached to a spacer positioned between the pair of optical members, the spacer defining a gap between the pair of optical members and the pair of optical members facing each other across the gap;
- a gap changing driver that is configured to change a dimension of the gap;
- and
- a refractive index changing unit that is configured to apply a voltage,
- wherein each of the optical members has a plurality of first optical layers and a plurality of second optical layers that are alternately laminated, the second optical layers each being formed of an electro-optical crystal;
- the refractive index changing unit that is configured to apply the voltage applies the voltage to each of the second optical layers to change a refractive index of the electro-optical crystal of the second optical layers
- and
- the gap changing driver is separate and apart from the refractive index changing unit.
Dependencies are inferred from the claim text.