Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno

Airbus Defence and Space Netherlands B.v

Stichting Nederlandse Wetenschappelijk Onderzoek Instituten

Airbus Netherlands B.v.

Aaldert Hidde Van Amerongen

Huibert Visser

Henri Johannes Petrus Vink

Ersin Dogan

Jeroen Henricus Hubertus Rietjens

A multi-angle imager () comprises an imaging array (Mij) configured to receive light beams (Li) via one or more entrance pupils (A) according to distinct fields of view (Vi) of an object (P) along each of multiple entry angles (&#x3b1;i). The imaging array (Mij) comprises multiple imaging branches (Mj, Mj) configured to form respective optical paths for the light beams (L, L) through the imager () for imaging respective subsections (S, S) of the object (P). Each imaging branch (Mj) comprises a distinct set of optical elements (M, M) configured to receive the respective light beam (L) along the respective entry angle (&#x3b1;) and redirect the respective light beam (L) towards the imaging plane (P). The light beams (L, L) from each of the multiple imaging branches (Mj, Mj) are redirected to travel in a common direction (y) between the imaging array (Mij) and the imaging plane (P).

Multi-angle imager

A manufacturing method for a grating is disclosed for the angular dispersion of light impinging the grating. The grating comprises tapered structures and cavities. A cavity width and/or corrugation amplitude is varied for achieving a desired grating efficiency according to calculation. A method is disclosed for conveniently creating gratings with variable cavity width and/or corrugation amplitude. The method comprises the step of anisotropically etching a groove pattern into a grating master. Optionally a replica is produced that is complementary to the grating master. By variation of an etching resist pattern, the cavity width of the grating may be varied allowing the optimization towards different efficiency goals.

Method for producing a diffraction grating

Growing community of inventors

Utrecht, Netherlands

Aaldert Hidde Van Amerongen