This paper demonstrates the laser assisted formation of piano-convex cylindrical and flat-top curved micro-lens array on fused silica glass surface. Initially, femtosecond laser pulses are irradiated on the sample glass to fabricate periodic linear micro-gratings on the glass surface. Afterwards, we ...
De-magnifying of flat-top laser beam can be realized by imaging optical system composed from F-Θ lens of scanning head and additional collimator. Difficulty of this approach is implementation of compact design of the collimating part. Solution is suggested in form of specially designed Beam ...
enables the fabrication of diffractive optical elements on top of biconvex lenses for imaging corrections (Radtke and Zeitner, 2007), or amicro-lens arrayon a concave lens, which can be combined with pinholes on a convex surface forming a spherical compound eye objective (Radtkeet al., 2007...
A tunable micro-lens and micro-lens array for use in optical communications are disclosed. The micro-lens uses thermo optical material and a temperature controller to adjust the tem
the viewing half space. While this integration is a simplification of the actual optical system, ignoring microcavity effects, lens array symmetry, and waveguide losses, the value can be taken as upper limit for comparison of the outcoupling efficiency compared with that of a flat glass substrate...
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surface, wherein a center of each polarization diffraction micro-lens of the array of polarization diffraction micro-lenses aligns with a center of a respective micro-LED of the array of micro-LEDs; anda cover glass bonded to the planar surface of the array of polarization diffraction micro-...
4.The light source of claim 1, wherein:each micro-LED of the array of micro-LEDs includes a semiconductor mesa structure that includes an active region configured to emit the visible light; anda width of each micro-lens of the array of micro-lenses is greater than 1.3 times of a width ...
3b. The probe light from a HeNe laser (632.8 nm, 0.95 mW, Thorlabs) is coupled into the flexible waveguide through a convex lens and a beam splitter so that it hits the microsphere at the tip of the flexible waveguide and then gets reflected back to be detected by the ...
13.The array of micromirrors with non-fixed underlying structures of claim 1, wherein the array of micromirrors is used as a variable focusing Micromirror Array Lens. 14.The array of micromirrors with non-fixed underlying structures of claim 1, wherein the reflective surface of each micromirror...