Surface Figure
Surface form tested by interferometry — PV/RMS values from the actual measurement.
Ureteroscope Optics
Ureteroscope Micro Lenses — Φ0.33–3.8 mm, PCV/PCX, Centration ≤3′
At Φ1.0 mm, a few arc-minutes of centration error moves the image center. We hold −0.005/−0.012 mm and verify every batch with measured COA values. Send the drawing for the fit review.
Questions buyers ask before sending a drawing:
- "Can you hold −0.005/−0.012 mm on diameter at Φ1.0 mm — and measure it, not assume it?" — micro tolerances are only meaningful if the supplier has the equipment to verify them.
- "Does the batch COA show measured values, or just 'within spec'?" — incoming inspection needs numbers to compare against, not pass/fail claims.
- "What documents ship with the batch for our regulatory file?" — medical programs need material and batch documentation that survives an audit.
The Problem
Four ways a ureteroscope build gets held up — and how HSD prevents them
The scene nobody wants to debug: the scope passes assembly, then the image center is off or the edge goes soft — and no measured centration values exist to say which micro lens drifted.
1 · Image center drift is a centration problem. On a Φ1.0 mm PCV/PCX lens, a few arc-minutes of centration error shifts the image center. At this scale the defect shows up in the assembled scope, not at the lens supplier's inspection.
How HSD prevents it: centration is verified on a per-batch sampling plan, and the measured values — not a pass/fail claim — go on the COA before parts leave the factory.
2 · Micro fit tolerances are unforgiving. −0.005/−0.012 mm on diameter is a fit tolerance for ultra-slim tube assemblies. If the batch drifts, the fit breaks with no visible defect — it surfaces as assembly rework.
How HSD prevents it: diameter and thickness are verified on a per-batch sampling plan; the values on the COA let your incoming inspection see drift before it reaches assembly.
3 · The "manufacturer" may be a reseller. If your supplier forwards drawings to several factories, nobody can explain a yield problem when it appears. The only fix is re-qualifying a second supplier and paying for it twice.
How HSD prevents it: we are the factory — a 30-person precision optical workshop in Nanjing. Your drawing is reviewed by our own engineers, not forwarded to a third party.
4 · Batch drift is invisible until assembly. Diameter, centration and surface can shift between lots, pass incoming inspection, and only surface in the finished instrument — where it is almost impossible to trace back to one batch.
How HSD prevents it: every batch COA carries measured values — dimensions, centration, surface quality — so drift is visible at your incoming inspection, not at final assembly.
What we make
One micro lens line, four capabilities
Component capability
| Item | HSD standard range |
|---|---|
| Types | PCV / PCX, per drawing |
| Diameter | Φ0.33–3.8 mm (Φ1.0 / Φ1.19 common) |
| Diameter tolerance | −0.005/−0.012 mm |
| Thickness tolerance | ±0.01–±0.02 mm |
| Radius | Custom R per drawing |
Tolerance capability
| Item | Specification |
|---|---|
| Centration | ≤3′ · ISO 10110-6 4/3′ |
| Surface quality | 40/20 MIL-PRF-13830B / ISO 10110-7 5/40-20 |
| Edge chipping | ≤0.05 mm, per drawing · ISO 10110-7 E 0.05 |
| Surface accuracy | Per drawing |
| Coating | Uncoated, or AR 400–700 nm |
Measurement capability
| Item | Method |
|---|---|
| Centration | Per-batch sampling inspection · measured values on COA |
| COA | Measured values: part/dims/centration/surface/method |
| Batch | Measured values, not "within spec" |
Delivery capability
| Item | Commitment |
|---|---|
| MOQ | 10 pieces |
| Quote | Within 24 h of drawing |
| Confidentiality | NDA standard |
| System | ISO 9001:2015 |
In-house production
Micro lens products and production, in-house
Our own micro lens line — grinding, polishing, centration and inspection. Customer designs are never displayed.
Micro lens production
Micro lens production
Photos show HSD's own micro lens production. Customer designs are never displayed; final specifications per the drawing confirmed with your engineer.
Why us
Why HSD
ISO 9001:2015
Manufacturer since 2009
Measured COA per batch
Micro lens line Φ0.33–3.8 mm
Custom radius per drawing
Per-batch sampling inspection
FAQ
Common questions
What glass materials do you work with for micro lenses?
Glass is per your drawing — CDGM, SCHOTT, OHARA and other grades on request. Every batch ships with material certificates, and we never substitute a grade without your written approval.
Can you hold −0.005/−0.012 mm on diameter at Φ0.33–3.8 mm?
Yes — it is the standard tolerance on our micro lens line. Parts are verified on a per-batch sampling plan, and the measured values go on the batch COA.
Is centration verified on every batch?
Yes — centration is checked on a per-batch sampling plan at ≤3′. The COA carries the measured values, not a "within spec" claim, so your incoming inspection sees real numbers.
Do you supply uncoated blanks or finished lenses?
Both. Uncoated blanks for customers with their own coating line; finished AR-coated lenses (400–700 nm) for OEMs that assemble directly. Coating and substrate data are part of the batch documents.
What are the MOQ, sampling and lead time?
MOQ 10. Drawing → engineer quote within 24 hours → sampling, with lead time confirmed against your drawing's complexity at quote → validation → process lock → production. NDA before technical discussion is standard.
What documents ship with each batch?
A COA with measured values (part, dimensions, centration, surface, test method) plus material certificates per batch — the documentation your incoming inspection and regulatory file need.
Have a ureteroscope micro lens drawing?
Engineer-to-engineer quote within 24 hours · NDA protected · MOQ 10.
Application context
Ureteroscope micro lenses: tiny diameters, tight centration
This page is the make-to-print route for ureteroscope micro lenses, Φ0.33–3.8 mm PCV/PCX blanks, where centration ≤3′ matters.
Check on the drawing: diameter, thickness, radius, edge and centration target.
Can you supply ureteroscope micro lenses as blanks?
Yes, uncoated PCV/PCX blanks per your spec, with material certificate and batch COA.
Inspection & Metrology
We measure it — and the numbers go on your COA.
Every batch is verified with interferometry, centration measurement and surface inspection. You get the actual measured values, not a “within spec” checkbox.
Centration
Centration checked on the centration station, typically ≤3′. The reading shown is from a real part — 2.02′.
Surface Quality
Surface and edge quality inspected under a video microscope — scratch/dig per MIL-PRF-13830B.
What “Pass” Looks Like
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 →
Real inspection record from this product line
Center ring pattern of a micro lens under the microscope — the view behind centration data.
Real measurement, kept on file. Your COA gets the same kind of data.
See the Factory Live — Schedule a Video Tour
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