Abstract:
A method for manufacturing a preferably asymmetrical lens element (5a) from a tempered blank (1) is characterized by: producing the lens element (5a) from a first partial volume (1a) of the tempered blank (1), whose thickness d is less than approximately 70%, preferably less than approximately 60%, particularly preferably less than approximately 50% of the thickness D of the tempered blank (1). Preferably, from a second partial volume (1b) of the tempered blank (1) at least a further lens element (5a′) is produced, wherein before the lens elements (5a, 5a′) are produced the tempered blank (1) is divided into the first and second partial volume (1a, 1b).
Abstract:
A method for manufacturing a preferably asymmetrical lens element (5a) from a tempered blank (1) is characterized by: producing the lens element (5a) from a first partial volume (1a) of the tempered blank (1), whose thickness d is less than approximately 70%, preferably less than approximately 60%, particularly preferably less than approximately 50% of the thickness D of the tempered blank (1). Preferably, from a second partial volume (1b) of the tempered blank (1) at least a further lens element (5a′) is produced, wherein before the lens elements (5a, 5a′) are produced the tempered blank (1) is divided into the first and second partial volume (1a, 1b).
Abstract:
A method for manufacturing at least one lens of synthetic quartz glass with increased H2 content for an optical system with an operating wavelength of less than 250 nm. The method involves: (1) providing at least one precursor product of synthetic quartz glass with a first H2 content, the precursor product having a circumferential border surface and two mutually opposed base surfaces, wherein at least one partial surface of at least one of the base surfaces has a curvature; (2) determining at least one target value for at least one treatment parameter for treating the precursor product in an H2-containing inert gas atmosphere; (3) treating the precursor product in the H2-containing atmosphere in accordance with the target value of the treatment parameter, thereby producing at least one precursor product of synthetic quartz glass with a second H2 content that is greater than the first H2 content; and (4) working at least part of at least one of the base surfaces of the treated precursor product, thereby producing at least one final lens shape.