What is a C-mount FA machine vision lens?

A C-mount FA machine vision lens is a factory-automation optic with a 1"-32 thread and a 17.526 mm flange focal distance, built for industrial cameras on AOI and robotic lines. Lensmind FA lenses cover the five Sensor groups on the HS FA sheet, with series distortion held below 0.05% and per-batch MTF records shipped with the order.

How do I choose an FA lens for a 2/3 inch camera?

Open the 2/3" Sensor group (LMJJ-FA0410A to LMJJ-FA5005A-5M). Match focal length to field of view, then confirm image circle, CRA, and C vs CS mount. Open the 25 mm sample page for LMJJ-FA2505A-5M to see the documentation format, or send your camera part number for a shortlist.

What is the difference between C-mount and CS-mount?

Both use the same 1"-32 thread; the difference is flange focal distance. C-mount is 17.526 mm and CS-mount is 12.526 mm - exactly 5.000 mm apart. A C-mount lens works on a CS-mount camera only with a 5 mm adapter ring; a CS-mount lens cannot reach focus on a C-mount camera. Specifying the wrong pair is the most common first-project delay we see.

Will these C-mount lenses cover a 1.1" sensor?

Yes. The HS FA sheet lists two 1.1" Sensor groups: 1.1" (LMHS-MH2012-10MP to MH2050-10MP) and 20MP-1.1" (LMHS-MH2406-20MP plus MH2812-20MP to MH2850-20MP). Send your camera model and we confirm image circle and CRA before you order.

How are the 30 FA models grouped?

The Lensmind HS FA sheet groups 30 C-mount models by Sensor: 1/1.8" (5), 2/3" (9), 1.1" (5), 12MP-4/3" (5), and 20MP-1.1" (6). Filter the catalog by those five groups, then open View details for the datasheet page.

Is <0.05% distortion a design value or a measured value?

Measured. Every batch passes distortion testing against the design prescription on interferometer-anchored stations. The records ship with the order, so your incoming QC can verify ours.

How much measurement error does 0.05% distortion cause?

In a 100 mm field of view, worst-case edge displacement is about 0.05 mm (50 μm). A typical 1% general-purpose lens carries up to 1.0 mm of geometric error at the same field - 20× larger - before any software correction. That difference decides whether edge features pass or fail tolerance.

How do you keep 10K+ batches consistent?

Four locks: 1 μm-class active alignment; metrology-anchored release with interferometer plus MTF, distortion, BFL and DOF measurement; approved-version control with sealed reference standards; and traceable per-batch records. The discipline mirrors our founders' volume production at CASC, Hikvision, Foxconn, and Sunny Optical.

Do I need a C-to-CS adapter ring?

Only if you mount a C-mount lens on a CS-mount camera. The 5 mm ring restores the 17.526 mm flange distance the lens expects. Our team confirms your camera's mount before shipment, so adapters arrive with the lenses, not after.

Can you match FA lenses to a machine vision camera I already own?

Yes. Send the camera or sensor part number; we confirm format, image circle, CRA, and mount compatibility first. If catalog FA glass does not fit, a custom variant is quoted from your spec.

What lead times apply to FA lenses?

Catalog FA lenses support low-MOQ sampling for validation. Custom variants run prototype-to-mass-production in 90 working days; repeat orders ship in 30 days. Lead time varies by product.

Do shipments include per-batch test reports?

Yes. Batch MTF and distortion reports plus BFL consistency data ship with each order, traceable under ISO 9001. Additional measurements such as DOF and temperature behavior can be agreed per project.

What MOQ applies to sampling?

Catalog models are sampled at low MOQ so your line can validate imaging before volume commitment. Custom variants are quoted per specification. Tell us the model and annual volume for a concrete number.

What if none of the catalog models fits my working distance?

Send the task anyway. Custom designs are a standard route for us - a locked optical prescription with no adjustable mechanism to drift - from drawing or sample to mass production in 90 working days.

Lensmind FA C-mount machine vision lenses including 20mm F4.0, 40mm F3.2, 50mm F2.8 and 60mm F5.6

Machine Vision · FA-CS (C-Mount)

C-Mount FA Lenses with <0.05% Distortion and 10K+ Batch Consistency

Q: Is <0.05% distortion a design value or a measured value?

Measured. Every batch passes distortion testing against the design prescription on interferometer-anchored stations. The records ship with the order, so your incoming QC can verify ours.

Q: How much measurement error does 0.05% distortion cause?

In a 100 mm field of view, worst-case edge displacement is about 0.05 mm (50 μm). A typical 1% general-purpose lens carries up to 1.0 mm of geometric error at the same field - 20× larger - before any software correction. That difference decides whether edge features pass or fail tolerance.

Q: How do you keep 10K+ batches consistent?

Four locks: 1 μm-class active alignment; metrology-anchored release with interferometer plus MTF, distortion, BFL and DOF measurement; approved-version control with sealed reference standards; and traceable per-batch records. The discipline mirrors our founders' volume production at CASC, Hikvision, Foxconn, and Sunny Optical.

Q: Do I need a C-to-CS adapter ring?

Only if you mount a C-mount lens on a CS-mount camera. The 5 mm ring restores the 17.526 mm flange distance the lens expects. Our team confirms your camera's mount before shipment, so adapters arrive with the lenses, not after.

Q: Can you match FA lenses to a machine vision camera I already own?

Yes. Send the camera or sensor part number; we confirm format, image circle, CRA, and mount compatibility first. If catalog FA glass does not fit, a custom variant is quoted from your spec.

Thirty C-mount FA models in the five Sensor groups on the Lensmind HS FA sheet: 1/1.8″, 2/3″, 1.1″, 12MP-4/3″, and 20MP-1.1″. Ground, centered, and MTF-validated in-house for AOI lines and robotic inspection that cannot tolerate edge deformation or batch drift. Every machine vision lens on this page ships with per-batch test records.

<0.05% Series Distortion 30 Catalog Models 10K+ Batch Consistency

FA catalog hub

30 C-mount FA models from the specification sheet

Every card is the same layout: photo and key specs. Click a card to open the datasheet page. Filter by the five Sensor groups in the Lensmind HS FA sheet.

Next step: open the SKU page, then request a quote from there.