Flat Lenses PBL25-532-F50

The LBTEK Flat Lens is a diffractive optical element that achieves beam convergence or divergence based on the polarization state of the incident light. The polarization direction of outgoing light is opposite to incident light. By controlling incident polarization, users can modulate the energy distribution of converging and diverging spots.

The flat lens operates as a planar diffractive device where the diffraction angle follows the relation sinθ = λ/p. The continuous variation of periodic structure provides aspherical aberration-free property with all rays converging precisely at the same point.

Key Features

• Liquid Crystal Polymer/N-BK7 Window Material, sandwich flat structure
• Fast axis orientation with continuously graded distribution and periodically decreasing radial alignment
• Polarization-dependent: converging or diverging light based on polarization state
• Flat structure, single wavelength, large dispersion, no spherical aberration
• Flexible customization available

Flat Lens, Clear Aperture Ø20 mm

Standard flat lenses with design wavelengths of 532 nm and 633 nm, and focal lengths of 50 mm, 75 mm, and 100 mm. Fabricated on N-BK7 window substrates with double-layer structure providing uniform phase retardation.