Patent ID: 11927603
Assignee: FORMFACTOR, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A probe for a probe system, the probe comprising:
a retroreflector defined by a retroreflector body that includes:
(i) a first side;
(ii) an opposed second side;
(iii) a tapered region that extends from the first side of the retroreflector body; and
(iv) a light-receiving region that is defined on the opposed second side of the retroreflector body; and
a probe tip configured to at least one of provide a test signal to a device under test (DUT) and receive a resultant signal from the DUT; and
wherein the retroreflector is configured to receive light, via the light-receiving region, at a light angle of incidence and to emit at least an emitted fraction of the light, from the retroreflector body and via the light-receiving region, at a light angle of emission that is at least substantially equal to the light angle of incidence; and
wherein the probe further includes a background offset region configured to convey light, which is incident thereon at the light angle of incidence, away from the retroreflector body at an offset region angle that differs from the light angle of incidence.