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US 12,706,443 B2Granted
Optical device
AssigneeRicoh Company, Ltd.
InventorSoh Okumura
Life of this patent
Estimating the term…
Abstract
An optical device includes a first reflector; a second reflector; an elastic support unit supporting the second reflector; a piezoelectric element on the elastic support unit; a light emitter configured to emit light having an oscillation wavelength; and circuitry configured to output a signal to apply drive voltage to the piezoelectric element to elastically deform the elastic support unit. The deformation of the elastic support unit changes a distance between the first reflector and the second reflector to change the oscillation wavelength of the light emitted from the light emitter.
Claims20
An optical device comprising:
- a first substrate including a light emitter including a first reflector and an active layer;
- a second reflector facing the first reflector across the active layer;
- an elastic support supporting the second reflector;
- a stationary support having a rectangular frame shape to which the elastic support is connected;
- a piezoelectric element on the elastic support;
- a second substrate including a movable reflector in which at least the elastic support and the stationary support share a common layer;
- a bonding layer that bonds the stationary support to the light emitter;
- and
- circuitry configured to output a signal to apply drive voltage to the piezoelectric element to elastically deform the elastic support,
- wherein the deformation of the elastic support moves the second reflector relative to the first reflector to oscillate light from the light emitter.
7 more elements
Dependencies are inferred from the claim text.