Optical device and associated methods
AssigneeDigitalOptics Corporation East
InventorAlan Kathman
Life of this patent
Estimating the term…
Abstract
An optical device includes a transparent substrate, a first replicated refractive surface on a first surface of the substrate in a first material, and a second replicated refractive surface on a second surface, opposite the first surface, and made of a second material, different from the first material. The material and curvature of the first replicated surface and the material and curvature of the second replicated surface may be configured to substantially reduce the chromatic dispersion and/or the thermal sensitivity of the optical device.
Claims16
An optical device, comprising:
- a transparent, rigid substrate having substantially planar opposing first and second surfaces;
- a first replicated refractive surface on the first surface of the substrate in a first material;
- and
- a second replicated refractive surface on the second surface of the substrate, the second replicated refractive surface being made of a second material, different from the first material, wherein the material and curvature of the first replicated surface, the material and curvature of the second replicated surface, and a material of the substrate are each configured to reduce the thermal sensitivity of the optical device relative to an optical device using first and second materials or having curvatures of the first and second replicated refractive surfaces alone.
A method of forming an optical device, the method comprising:
- providing a plurality of first surfaces in a first material having a first coefficient of optothermal expansion;
- providing a plurality of second surfaces in a second material having a second coefficient of optothermal expansion on corresponding first surfaces, the second surfaces having a radius of curvature, thereby forming a plurality of optical devices;
- designing the first and second surfaces to reduce at least one of the coefficient of optothermal expansion and chromatic dispersion for the optical device having the first and second surfaces relative to an optical device using first and second materials or having first and second surfaces alone;
- and
- singulating the plurality of optical devices to form the optical device.
Dependencies are inferred from the claim text.