Surface Figure
Surface form tested by interferometry — PV/RMS values from the actual measurement.
Tier 2 Optical Manufacturer · ISO 9001:2015
Rod Lens & Micro Lens Supplier for Endoscope OEM Manufacturers
One relay train should not take three suppliers. One drawing covers rod lenses, micro lenses and cemented assemblies, with ≤3′ centration and a measured COA. Engineering reviews fit and price within 24 hours.
OEM assembly lines use this route to shorten qualification and keep batch-to-batch image quality stable.
One Drawing, One Review
Quote Within 24 Hours
Batch COA, Measured Values
ISO 9001:2015 | NDA Protected | COA Per Batch | MOQ 10+
Send Drawing / RFQ Video Factory TourWhat This Solves for Your OEM Assembly
Your relay train needs rod lenses and micro lenses that arrive coated, ready to install and consistent across every batch. These precision components are made to your drawing for rigid endoscope and ureteroscope assembly lines — fully coated, ready to assemble, held to ≤3′ centration with a measured COA.
One drawing starts the process: we review manufacturability and optical path fit, confirm coating and centration, then ship with batch traceability. Our team works to ISO 10110, German DIN, and US MIL specs as required.
Serving: Endoscope OEMs • Medical Device Manufacturers
Rod lenses and micro lenses are currently used by medical and industrial OEMs in Europe, Middle East, and Asia.
Core Product: Rod Lenses & Micro Lenses
Fully coated, ready-to-assemble optical components for endoscope relay systems
Real rod lenses from our shop floor
Production photos, labeled by diameter and length. Final specifications per your drawing — make-to-print.
⌀ 1.19 – 8.0 mmLength 1 – 67 mm
Tolerance −0.02 to −0.04 mm (fit tolerance)Centration ≤3′Edge chipping ≤0.05 mm
Optical glass245 standard sizes
Optical Glass Materials
JGS1 (UV-grade fused silica), H-ZF4 / H-ZF6 / H-ZF7L (high-index flint), H-LAK series (high refractive index, low dispersion), H-K9L (standard optical glass), N-SK15 and more. Full material certs provided per batch.
AR Coating — Ready to Install
Standard broadband AR coating 400–700 nm with Ravg < 0.5%. Coated to your specification — no additional coating step required. Custom wavelength bands available upon request. Coating durability tested for 300 autoclave cycles and repeated chemical cleaning protocols.
Optical Surface & Durability Standards
Surface quality 40/20 scratch-dig per MIL-PRF-13830B. Designed for repeated high-temperature and chemical cleaning protocols used in assembled instruments. Material selection supports long-term durability.
Precision grinding line
Precision polishing line
Centration & dimensional inspection
Optical quality inspection
Eccentricity testing
Standard Rod Lens Specifications
245 items| No. | Spec (Φ×L mm) | Type | Status |
|---|
Capacity & Lead Time
| Order Type | Monthly Capacity | Standard Lead Time | Notes |
|---|---|---|---|
| Standard sizes (proven) | 5,000+ pcs / month | Confirmed at quote | Made to print from proven tooling; COA included |
| Custom sampling | Dedicated line | Depends on drawing complexity | Engineer-to-engineer DFM review included |
| Batch production | 10,000+ pcs / month | Depends on drawing complexity | Annual framework contracts supported |
| Large-volume OEM | Scalable upon agreement | To be discussed | Dedicated production line available |
Precision Optics Packaging: Individually packed in anti-static vacuum-sealed trays · Shock-resistant foam inserts · Outer export-grade carton · Compatible with customer cleanroom assembly protocols. Temperature & humidity controlled workshop environment.
Why Choose HSD for OEM Optical Supply
Professional focus – rod lenses and micro lenses, made in-house.
Stable quality – Strict dimensional control & batch consistency. Process locked — no undocumented material or supplier changes.
ISO 9001:2015 Certified – Full dimensional & inspection report (COA) per batch: dimensions, centration, surface quality, transmittance. Batch traceability for audit compliance.
Engineer-to-Engineer DFM Review – We review your drawings for manufacturability, tolerance optimization, and optical path compatibility before production.
Fast response – 24h quotation, MOQ from 10 pieces. Sampling lead time depends on your drawing's complexity.
Quality Guarantee & After-Sales – Defective products are replaced or reworked, reviewed against the agreed specification.
Custom to your drawing – Produced exactly to your technical drawing. German / EU optical standards supported.
Reliable delivery – Long-term project support. Annual framework contracts welcomed.
OEM Trusted
Supplying finished rod lenses to OEM assemblers across Europe, Middle East & Asia
Repeat Orders
Monthly recurring orders from multiple industrial customers
Full Traceability
Every batch ships with complete dimensional, material & transmittance COA
Certification & Quality Assurance
ISO 9001:2015 Certified
Professional optical workshop • Temperature & humidity controlled • Full inspection equipment
Full dimensional report per batch
German / EU optical drawing experienced
Centration ≤ 3 arcmin
Diameter tolerance per drawing
Surface quality 40/20
Transmittance measured
Batch traceability
ISO 9001:2015 quality system with full batch COA and traceability; ISO 13485 is on our roadmap.
We don't just make rod lenses. We measure, document, and stand behind every single batch.
Industry Presence
Meet us at major optical and medical device exhibitions worldwide
CMEFShanghai · 2026
We exhibit regularly. Contact us to schedule a meeting at the next show.
Have a drawing? Send it for an engineer-to-engineer review.
Quote within 24 hours · NDA protected · MOQ 10 · COA sample available on request.
Send Drawing / RFQFAQ
Common questions
Do you supply fully coated lenses ready to assemble?
Yes — fully coated (AR 400–700 nm), made to your drawing and ready for your assembly line. No additional coating step required.
What centration can you hold?
≤3′, tighter per drawing, verified on a per-batch sampling plan with measured values on the COA.
Can you coat to custom wavelengths?
Yes — custom wavelength bands on request, with coating durability tested for 300 autoclave cycles and repeated chemical cleaning protocols.
Do you provide batch documentation?
Yes — COA with measured values (dimensions, centration, surface, test method) plus material certificates per batch. A redacted COA sample is available on request.
What is the MOQ and how fast is a quote?
MOQ 10 pieces. Quote within 24 hours of receiving your drawing, NDA protected.
Send Drawing / Request Quotation
Tell us your rod lens requirements and we'll respond within 24 hours
🔒 NDA Protected — Your drawings stay yours.
All drawings, specs, and optical data you share with us are treated as strictly confidential. We'll sign your NDA or ours before you send anything sensitive. Prefer to keep it simple? Send non-confidential specs first and we'll quote within 24 hours.
📄 Request our standard NDA template — or we'll sign yours
All drawings, specs, and optical data you share with us are treated as strictly confidential. We'll sign your NDA or ours before you send anything sensitive. Prefer to keep it simple? Send non-confidential specs first and we'll quote within 24 hours.
📄 Request our standard NDA template — or we'll sign yours
RFQ Sent — Securely
We'll reply within 24h. If you requested an NDA, we'll send it with our response. Your data is confidential.
Check Our Factory Online
Schedule a live video tour to verify our rod lens production capability.
See grinding, polishing, inspection and quality control process.
All information shared during the tour is confidential.
Application context
Endoscope OEM optics: one make-to-print partner
This page is for endoscope OEMs: rod lenses and micro lenses reviewed as one package, NDA standard before drawings.
Check on the drawing set: rod lens specs, micro lens specs, material and volumes.
What does HSD review first for an OEM project?
The drawing set and target volumes; engineering confirms process, tolerances and COA format.
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
Interferometer head close-up — a spoke defect at PV 4.325λ stopped in inspection.
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