Assembly for positioning the component parts of a laser detector

Details Assembly for positioning the component parts of a laser detector Assembly for positioning the component parts of a laser detector

1996-09-30

1998-01-20

Nelms, David C.

Optical: systems and elements

Lens

With support

369 4414, G02B 702, G11B 700

Patent

active

057106720

ABSTRACT:
An optical system includes an LDGU having a grating beam splitter and an optical source with an effective aperture for generating a radiation beam to be applied to a data track of an optical storage medium, a detector array and a micro-lens. An LDGU mounting structure includes: a baseplate having a plurality of clearance holes and defining a registration groove; a plurality of contact pins which are aligned in the clearance holes of the baseplate; and a pedestal defining a plurality of surfaces for mounting the optical source, the detector array and the micro-lens. The mounting structure further includes: a cover including a transparent window fixedly secured to the baseplate to form a hermetic seal; and a grating support barrel for mounting the grating beam splitter which is aligned to the registration groove in the baseplate and which has an opening and a plurality of registration surfaces defined on its uppermost surface.

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C. J. Leedecke et al, Electronics Materials Handbook, vol. 1, Packaging, 1989.
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W.Ophey, Compact Optical Light Paths, Jpn, J. Appl. Phys., vol. 32, Part 1, No. 118, Nov. 1993, pp. 5252-5257.

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