Method and device for the production of optical lenses or...

Details Method and device for the production of optical lenses or... Method and device for the production of optical lenses or...

G - Physics

02

B

G02B 3/00 (2006.01) G02B 5/04 (2006.01) G02B 5/18 (2006.01)

Patent

CA 2147009

A method for the production of optically operating structures, particularly of lenses and lens arrays and prisms, with which in at least one masking step (MS) a base structure (10) that is optically operating in steps is formed on the surface of a substrate (1) in at least one masking step (MS) with a subsequent etching step (AS) and is then smoothed by capillary surface forces of the melted substrate in a melting step by means of heating to melting, characterized in that in the melting step (SS) the substrate (1) that carries the base structure (10) is placed inside a vacuum chamber (3), and then to charge the base structure (10) in a strip-like manner with a high- voltage-accelerated electron beam (4), which simulta- neously moves on the substrate (1) perpendicularly and in respect to a melting zone (11) operated by the electron beam (4) on the base structure (10), with such an energy density that the melting zone (11) has a depth (T) that corresponds to at least one step height (H) of the stepped base structure (10). A device for executing the method and novel products produced by the method are disclosed.

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