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US 11,786,994 B2Granted
Method for producing a transmissive optics
AssigneeAixlens GmbH
InventorsAxel Von Wallfeld, Reinhart Poprawe, Christian Fornaroli, Edgar Willenborg, Christian Weingarten, Uwe Clasen
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Abstract
In a method for the manufacture of a transmissive optical system from a blank, material ablation is achieved on the blank with an ablative laser, and the pulse duration of the ablative laser is less than 1 ns, and preferably lies between 3 fs and 100 fs, or between 100 fs and 10 ps.
Claims18
A method for the manufacture of a transmissive optical system from a plastic blank,
- wherein material ablation is achieved on the blank with an ablative plastic-vaporizing laser,
- wherein the focal diameter of the ablative laser lies between 5 μm and 50 μm;
- wherein the pulse duration of the ablative laser is less than 1 ns and the pulse energy, which corresponds to the ablation thickness per pulse, lies between 0.1 μJ and 10 μJ and varies in time depending on the position of the blank,
- wherein the pulse energy is changed by changing the pulse power or the pulse duration,
- wherein the ablative laser effects a material ablation of 0.01 to 10 μm per pulse.
2 more elements
Dependencies are inferred from the claim text.