OPTICAL BENCH ASSEMBLY AND FABRICATION METHOD

摘要

An optical lens for use with an optical bench. The lens has a diffractive element which provides an angular offset to radiation incident on the lens. The offset substantially compensates for an undesirable focal point location caused by a variance between an integral component position on the bench and a desired position. The lens is particularly useful for an integral component position dictated by the bench crystal structure. In an illustrative embodiment an aspheric diffractive element deflects incident radiation by an amount in the range of about 8° to about 12°. Further disclosed is a method of compensation for variance between an integral component position on a bench and a desired position. Still further disclosed are an optical bench, a method for fabricating an optical bench and a semiconductor device.