
Surface Figure
Surface form tested by interferometry — PV/RMS values from the actual measurement.
Standard Size · Made to Print
This 16.00 mm relay step is already in production. Send the drawing and get a fit check, tolerance review and quote within 24 hours. No custom-quote wait. Supplied as uncoated rod lens blanks for coating laboratories, or finished per your drawing for OEM assembly, with a measured batch COA. It is a compact pairing for slim rigid builds where a 16 mm relay pitch keeps the optical train short.
Specifications
Final tolerances, glass grade and build type are confirmed against your drawing at quote.
Size Positioning
Φ2.00 × 16.00 mm is a compact pairing: a 2.00 mm outer diameter with a 16.00 mm relay pitch. It fits slim rigid scope builds where space is tight and the relay train needs a short step.
This compact pairing is usually specified when the relay train needs a short step and the scope tube is slim; end faces are typically polished flat.
Design Notes
Design note: the 16 mm pitch at Φ2.00 mm keeps the relay short; confirm end polish, chamfer and centration datum on your drawing.
Two Supply Paths
We supply Φ2.00 × 16.00 mm uncoated blanks with tight diameter control, so coating labs can load directly without rework.
For OEM, we finish this size to drawing with centration and surface checks before shipment.
Real Production Photos
Photos are production references; final dimensions follow your drawing.
Proven Size
The 2.00 mm diameter and 16 mm pitch combination has real production history; it is a proven short-step relay for compact tubes.
Drawings first. A drawing is always the fastest way to a precise match — send yours and we take it from there.
In-house production
You can check the Φ2.00 × 16.00 mm process by asking for the batch COA; diameter and centration are measured, not assumed.
Quality Evidence
Φ2.00 × 16.00 mm ships with a batch COA showing measured diameter, length and centration for the batch.
Inspection & Metrology
Every batch is verified with interferometry, centration measurement and surface inspection. You get the actual measured values, not a “within spec” checkbox.

Surface form tested by interferometry — PV/RMS values from the actual measurement.

Centration checked on the centration station, typically ≤3′. The reading shown is from a real part — 2.02′.

Surface and edge quality inspected under a video microscope — scratch/dig per MIL-PRF-13830B.

A passing surface from a production run: PV 0.51λ, RMS 0.059λ. Rejects never leave the workshop.
Measured COA per batch — ask for a sample COA with your quote. · Learn how to read a surface map →

Workstation measurement during a compact relay batch — PV 0.51λ.
Real measurement, kept on file. Your COA gets the same kind of data.
FAQ
Yes, it is in the 245-size database and made to order with MOQ 10+.
It suits compact scope layouts that need more relays in less length.
Yes, −0.02/−0.04 mm, measured per batch.
Yes, uncoated blank or finished rod, per your drawing.
Batch COA with measured values plus material certificate.
Related
Full 245-size database, by family.
Relay and rear rods, Φ1.19–8.0 mm, per drawing.
Hysteroscope, cystoscope and slim rigid scope optics.
Factory Video
See Φ2.00 × 16.00 mm production live, including the slim-diameter handling and centration checks.
Watch rod lens grinding, polishing, centration measurement and final inspection in real time. All information shared during the tour is confidential — your NDA is welcome.
Schedule a Live Video Tour