초록 ▼

XY position digitizer 10 has an X send substrate 11X with an associated X receive substrate 12X, and a Y send substrate 11Y with an associated Y receive substrate 12Y, defining free space region 10F therebetween. Send waveguides 13X are embedded in the X send substrate and send waveguides 13Y are em

XY position digitizer 10 has an X send substrate 11X with an associated X receive substrate 12X, and a Y send substrate 11Y with an associated Y receive substrate 12Y, defining free space region 10F therebetween. Send waveguides 13X are embedded in the X send substrate and send waveguides 13Y are embedded in the Y send substrate. The send waveguides sends an array of send light beams 15X across the free space region to the X receive substrate. The send waveguides likewise sends an array of send light beams 15Y across the free space region to the Y receive substrate. Receive waveguides 16X are embedded in the X receive substrate and receive waveguides 16Y are embedded in the Y receive substrate in correspondence with the X and Y send waveguides. Each receive waveguide receives at least a portion of the light beam from the corresponding send waveguide. An array of X send optical systems 18X are embedded in the X send substrate. One send optical system is in precise optical alignment with each send waveguide, for enhancing the collimation of the constrained send light from that aligned send waveguide.

대표청구항 ▼

[ We claim as our invention:] [1.] A waveguide apparatus, comprising:a send substrate and an opposed receive substrate spaced from the send substrate defining a free space region therebetween;send waveguides embedded in the send substrate, each send waveguide having a free space end proximate the fr

[ We claim as our invention:] [1.] A waveguide apparatus, comprising:a send substrate and an opposed receive substrate spaced from the send substrate defining a free space region therebetween;send waveguides embedded in the send substrate, each send waveguide having a free space end proximate the free space region and a light source end and guides constrained send light from the source end to the space end, the space ends of the send waveguides forming a parallel send array for sending a generally parallel array of unconstrained send light beams across the free space region to the receive substrate;receive waveguides embedded in the receive substrate, each receive waveguide having a free space end proximate the free space region and a light detect end and guides constrained receive light from the space end to the detect end, the space ends of the receive waveguides forming a parallel receive array, each receive waveguide of the receive array in optical association with a corresponding send waveguide of the send array for receiving at least a portion of the light beam from the corresponding send waveguide which becomes constrained receive light in that receive waveguide; andan array of send optical systems embedded in the send substrate between the send array and the free space region, one send optical system in an optically aligned fixed position relative to each send waveguide, which optical system enhances the collimation of the constrained send light from that aligned send waveguide, for enhancing the collimation of the light beams crossing the free space region causing a higher portion of the light beam to be received by the corresponding receive waveguide.