초록 ▼

A color separation microlens is fabricated to be a single micro-optical element made up of a color separation grating integrated with a refractive lens. The color separation microlens separates the spectrum into distinct color spots and focuses these spots to a common plane. The spots fall at the lo

A color separation microlens is fabricated to be a single micro-optical element made up of a color separation grating integrated with a refractive lens. The color separation microlens separates the spectrum into distinct color spots and focuses these spots to a common plane. The spots fall at the locations of the different diffraction orders of the grating. The color separation is done by the grating, and the focusing is done by the lens. The color separation microlens can be fabricated as a monolithically integrated element (an element in which the grating and the lens are combined to a single surface) and can also be fabricated as a dual-sided thin wafer (a wafer in which the grating is on one side and the lens is on the other).

대표청구항 ▼

A one-piece, unitary, color separation and focusing microlens which produces selected color dispersion of an incoming spectral band by diffraction orders and which also focuses the selected, dispersed diffraction orders into a plurality of separate, distinct spots in a common focal plane of the micr

A one-piece, unitary, color separation and focusing microlens which produces selected color dispersion of an incoming spectral band by diffraction orders and which also focuses the selected, dispersed diffraction orders into a plurality of separate, distinct spots in a common focal plane of the microlens, said color separation microlens comprising, dispersive means for separating colors of an incoming spectral band by a plurality of diffraction orders, focusing means located with respect to the dispersive means for focusing the separated colors of the plurality of diffraction orders into a plurality of separate, distinct spots in a common focal plane, said focal plane being spaced from the microlens by the focal distance of the microlens for said spectral band, and said dispersive means and focusing means being fabricated in a one-piece, unitary, micro-optical element.