Split optical element and a low cost fabrication approach

Details Split optical element and a low cost fabrication approach Split optical element and a low cost fabrication approach

1997-11-21

2000-03-28

Shafer, Ricky D.

Optical: systems and elements

Polarization without modulation

Depolarization

359495, 359497, 359900, 359484, G02B 530

Patent

active

060439335

ABSTRACT:
A method of fabricating split optical elements includes fixing a number of optical members in a side-by-side arrangement such that abutting optical members have different optical characteristics with respect to manipulating polarization components of light. In the preferred embodiment, the optical members are fixed to a transparent substrate by an optically transparent epoxy and the optical members are walk-off crystals having oppositely directed walk-off directions. The arrangement of optical members is segmented to form discrete optical elements comprising first and second portions supported on a segment of the transparent substrate. The first and second portions exhibit different optical characteristics with respect to manipulating polarization components. In one embodiment, the arrangement is segmented by dicing the optical members in a lengthwise direction in a first series of cuts and dicing the optical members in a widthwise direction in a second series of cuts. In a second embodiment, first and second series of cuts are both at acute angles to interfaces between adjacent optical members, yielding optical elements in which oppositely directed walk-off directions of the first and second portions of an element are parallel to the interface between the portions, but at an acute angle to the sides of the element.

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