Rectangular monobloc optical lens and manufacturing method...

Details Rectangular monobloc optical lens and manufacturing method... Rectangular monobloc optical lens and manufacturing method...

2007-12-25

2007-12-25

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With reflecting element

C359S726000

Reexamination Certificate

active

11403894

ABSTRACT:
A rectangular monobloc optical lens and a manufacturing method thereof are disclosed. A monobloc optical lens includes a rectangular surround and a central mirror-surface area. The rectangular surround is mounted inside a clipping part of a lens holder. The central mirror-surface area consists of a convex aspherical surface and a concave aspherical surface while the convex aspherical surface faces an image side and the concave aspherical surface faces an object side. The manufacturing method includes the steps of: cutting a sheet made from glass material into a plurality of rectangular sheet units; then setting the rectangular sheet unit into a mold for lens for hot pressing. Thereby, the manufacturing process is simplified and the cost is reduced. Moreover, the lens has high resolution and the volume of the lens is effectively reduced so as to increase the applications of the lens.

REFERENCES:
patent: 1898791 (1933-02-01), Schlumbohm
patent: 2561895 (1951-07-01), Walder
patent: 6356398 (2002-03-01), Otsuki et al.

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