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US 8,541,713 B1Granted
Subsurface glass reticles
AssigneeTranslume, Inc.
InventorsMark A. Dugan, Ali Said
Life of this patent
Estimating the term…
Abstract
An optical instrument for light incoming along a principal optical axis includes a glass block and a subsurface object within the glass block. The subsurface object includes an arrangement of object marks. Each object mark includes a plurality of scattering layers stacked against the principal optical axis of the incoming light. First and second scattering layers of the plurality of scattering layers have different polarization responses.
Claims20
A method of fabricating a reticle for a telescopic sight, the method comprising the steps of:
- directing ultrashort laser pulses toward a glass block;
- and
- forming a subsurface object within the glass block, the subsurface object having a plurality of intrinsic scattering layers;
- wherein the forming step includes selecting a polarization state of the ultrashort laser pulses to vary a polarization dependence of the subsurface object over the plurality of intrinsic scattering layers;
- and
- wherein the forming step includes writing a first intrinsic scattering layer of the plurality of intrinsic scattering layers within the glass block with the ultrashort laser pulses in a first polarization state, and writing a second intrinsic scattering layer of the plurality of intrinsic scattering layers within the glass block with the ultrashort laser pulses in a second polarization state.
3 more elements
A method of fabricating a reticle for a telescopic sight, the method comprising the steps of:
- directing ultrashort laser pulses toward a glass block;
- and
- forming a subsurface object within the glass block, the subsurface object having a plurality of intrinsic scattering layers;
- wherein the forming step includes selecting a polarization state of the ultrashort laser pulses to vary a polarization dependence of the subsurface object over the plurality of intrinsic scattering layers;
- and
- wherein the forming step includes writing a set of parallel tracks within each intrinsic scattering layer, and varying the polarization state of the ultrashort laser while writing each track.
3 more elements
Dependencies are inferred from the claim text.