What are the different types of aspheric lenses?

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Asphere Type	Description	Relative Price
Precision Aspherized Achromatic Lenses	Diffraction-limited and color-corrected doublet with aspheric surface for broadband applications	$$$$
“Laser-Grade” Aspheres	<λ/10 transmitted wavefront	$$$
Precision Polished Aspheres	Most common asphere type, offering a balance between cost and performance	$$
Best Form Aspheres	Modified PCX or PCV lenses with one aspheric surface	$$
Diamond Turned Aspheres	Made out of high end plastics and crystalline materials	$$
Hybrid Aspherized Achromatic Lenses	Low cost doublet with molded polymer diffractive surface to minimize chromatic aberration	$
Molded Aspheres	Low cost plastic or glass lenses suited for high volume production	$