Emerson, Peter James

A method for breaking a substantially planar workpiece having first and second major surfaces, with a metallization layer on the first major surface, comprises the steps of: i) forming a groove in the workpiece extending parallel to the plane, the groove being open at an upper surface of the workpiece, and then subsequently ii) applying a workpiece breaking force to the first major surface of the workpiece to crack the workpiece along a break line coincident with the groove, then iii) applying a metallization breaking force to the second major surface of the workpiece to break the metallization layer along the break line.

An intrinsic parameter testing tool for measuring intrinsic parameters or validating intrinsic parameter calibration of a camera under test, comprises a camera support for mounting a camera under test such that its optical axis extends outwardly therefrom in a predetermined direction, a collimator support, and a plurality of infinity-focused collimators mounted on the collimator support, each collimator of the plurality of collimators being positioned relative to the collimator support so that the camera mounted on the camera support may obtain an image of a target surface, the image comprising a plurality of sub-images corresponding to sub-regions of the target surface, each sub-image being obtained from light passing through a respective collimator of the plurality of collimators, wherein the collimator support is movably mounted so that it may be independently rotated about two rotary axes, the first, azimuthal, rotary axis being parallel to the optical axis of the camera when mounted on the camera support and the second rotary axis being substantially orthogonal to the first rotary axis.

Separation between a printing screen or stencil and at least one singulated workpiece following a printing operation is controlled by selective vertical actuation of a surround plate. In particular, an upward force may be supplied to the surround plate following printing, before and / or during separation. Drive means are provided to control movement of the surround plate, which may conveniently be located intermediate the surround plate and a conveyance unit.

A printing screen for SMT applications at least partially comprising graphene, optionally in the form of carbon nanotubes.

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