Optical filter stack
AssigneeFinisar Corporation
InventorMina Farr
Life of this patent
Estimating the term…
Abstract
Optical devices and related methods are provided. One example of the optical device includes two or more optical members joined together to form a stack. Each of the optical members in the stack includes a reflecting surface that has a corresponding slope, where the slope of each reflecting surface is different. In addition, disposed on each reflecting surface is a material that is reflective for a particular wavelength of light, so that each optical member reflects a different wavelength, and so that the optical members in the stack are able to collectively image the reflected signals onto a two dimensional detection plane.
Claims28
An optical device, comprising:
- a plurality of optical members joined together to form a stack, each optical member including:
- a reflecting surface having a corresponding slope, the slope of the reflecting surface of one of the optical members being different from the slope of the reflecting surface of another of the optical members;
- and
- a material, disposed on the reflecting surface, that is reflective for at least one particular wavelength of light, and one of the optical members being reflective for a different wavelength of light than another of the optical members,
- wherein the slope of the reflecting surface of at least one of the plurality of optical members is at least partially discontinuous.
An optical device, comprising:
- a plurality of optical members joined together to form a stack having a top and a bottom, each optical member being substantially in the form of a wedge and a reflection angle associated with each optical member being defined at least in part by any optical members disposed between that optical member and the bottom of the stack, and each optical member including:
- a reflecting surface having a corresponding slope, wherein the slope of the reflecting surface of at least one of the plurality of optical members is at least partially discontinuous;
- and
- a material, disposed on the reflecting surface, that is reflective for at least one particular wavelength of light such that each of the optical members is reflective for a different wavelength of light.
Dependencies are inferred from the claim text.