US 11,945,017 B2
Process for manufacturing optical elements for telescope optics usable in space missions
Marta Maria Civitani, Rome (IT); Luigi Lessio, Rome (IT); Giovanni Pareschi, Rome (IT); Giorgio Toso, Rome (IT); and Salvatore Incorvaia, Rome (IT)
Assigned to ISTITUTO NAZIONALE DI ASTROFISICA, (IT)
Appl. No. 18/005,093
Filed by ISTITUTO NAZIONALE DI ASTROFISICA, Rome (IT)
PCT Filed Jul. 14, 2021, PCT No. PCT/IB2021/056335
§ 371(c)(1), (2) Date Jan. 11, 2023,
PCT Pub. No. WO2022/013768, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 102020000017086 (IT), filed on Jul. 14, 2020.
Prior Publication US 2023/0256494 A1, Aug. 17, 2023
Int. Cl. B21D 22/14 (2006.01); B23K 31/02 (2006.01); C23C 18/16 (2006.01); C23C 18/32 (2006.01)
CPC B21D 22/14 (2013.01) [B23K 31/02 (2013.01); C23C 18/1689 (2013.01); C23C 18/32 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A process for manufacturing an optical element comprising:
a first step of spinning a circular sheet of a first metallic material for it to adhere to a rotating matrix and form a shell;
a second step of assembling the shell on a temporary support; and
at least a third step of diamond turning the shell by means of a diamond tool to obtain an optical surface.