Transparent parts: missing depth, or the background measured instead
Glass, clear plastic, film. Empty in the depth map, or the depth of whatever sits behind
Why it fails, and why we are not bound by it
Clear materials transmit most incident light. A projected pattern therefore lands on the object behind the part. The reported depth belongs to that object, not to the surface. Coherent detection gets its sensitivity from mixing with the local oscillator, not from return intensity. The weak Fresnel reflection at the surface is therefore still enough for ranging.
Measured evidence
The case below is translucent biological tissue. It does not replace a test on glass or clear plastic. Ship us a sample for evaluation.
Assess whether this fits your part
Describe the material, size and measurement requirement, or ship a sample to the lab. We will assess feasibility.
Contact Us