2 results about "Airy disk" patented technology

In one embodiment, a method includes accessing an image captured by an imaging system that includes an aperture and an optical sensor, wherein the imaging system blurs the image; and de-blurring the image by applying an Airy-disk correction that attributes at least part of the blurring in the image to a circular aperture rather than to a pinhole aperture.

The application discloses an exposure writing field splicing method of an electron beam spherical grating, and the splicing process comprises the following steps: calculating the writing field size; calculating the writing field splicing interval of the spherical grating; focusing on a spherical reference point and locally exposing; identifying the writing field splicing error; adjusting and controlling the writing field splicing error; modifying and compensating the consistency of the writing field pattern of each region of the spherical grating; and exposing by the electron beam after converting the error of the whole region writing field. The exposure writing field splicing method of the electron beam spherical grating provided by the application guarantees the consistency of the writing field splicing and the pattern of each region of the spherical grating, reduces the surface roughness of the electron beam spherical grating, avoids the appearance of the secondary peak of the imaging Airy disk caused by the splicing error, and guarantees the imaging quality and the spectral resolution of the spectral instrument.