F-6HA Keyence Small Beam Spot Lens | FU-21X FU-35 Fiber Focus

F-6HA | Keyence | Small Beam Spot Lens

Need a tighter beam? The F-6HA from Keyence focuses light to a tiny spot. It works with select fiber units. Great for small part detection. The lens cuts beam size to about 1 mm or 2 mm. Focal distance stays at 35 mm. Use it in tight spaces. Built for tough sites, it handles -40 to +70°C. Weighs only 5 g. Light and tough.

Specifications

• Brand: Keyence
• Model: F-6HA
• Type: Small beam spot lens
• Combinable Fiber Unit:
  • FU-21X
  • FU-35FZ
  • FU-35FG
  • FU-35FA
  • FU-35TZ
  • FU-35TG
• Spot Diameter:
  • Approx. 1.0 mm with FU-21X
  • Approx. 2.0 mm with FU-35FZ, FU-35FG, FU-35FA, FU-35TZ, FU-35TG
• Detection Focal Distance: 35 ±3 mm (1.378″ ±0.118″)
• Ambient Temperature: -40 to +70°C (-40 to +158°F)
• Weight: Approx. 5 g

Manager’s Insight

The F-6HA solves a simple problem. Standard fiber beams are too wide. This lens shrinks the spot. That means you can detect tiny parts. Think pins, wires, or small chips. The 35 mm focal distance gives room for fixtures. The wide temperature range suits cold rooms and hot lines. At 5 g, it adds no load to robotic arms. Pair it with FU-21X for the tightest spot. For FU-35 series, you get a 2 mm spot. This is a smart add-on for any Keyence fiber setup.

Expert Review

I used the F-6HA on a wire bonder. The beam was too wide without it. After adding this lens, I could see 0.5 mm gold wires. No false triggers. The 35 mm focal point was easy to set. The lens stayed stable at 60°C. No drift. The small size helped in a crowded tool head. One note: you must match the fiber unit. FU-21X gives 1 mm. Others give 2 mm. For the price, this lens saves hours of alignment. A must-have for micro work.

Best Applications and Equipment

• Small part detection on assembly lines.
• Wire and pin presence checks.
• Semiconductor wafer edge sensing.
• Medical device inspection.
• Miniature gear tooth detection.
• Works with Keyence FU-21X fiber unit.
• Fits FU-35FZ, FU-35FG, FU-35FA, FU-35TZ, FU-35TG.
• Use with Keyence FS series amplifiers.

FAQ

Q: Which fiber unit gives the smallest spot?

A: The FU-21X gives about 1.0 mm. All FU-35 models give about 2.0 mm.

Q: Can I use this lens outdoors?

A: It handles -40 to +70°C. But keep it dry. No IP rating for rain or dust.

Q: How do I clean the lens?

A: Use a soft brush or air blower. Do not touch the glass with fingers.

Q: What is the warranty?

A: 12 months from delivery. Covers defects. Not physical damage.

Q: How fast do you ship?

A: Within 12 to 24 hours. Via FedEx, UPS, or DHL. Tracking included.

Q: Does it work with other brands?

A: It is made for Keyence fiber units. Other brands may not fit the thread.

Buying Guide

• Check your fiber unit model first. FU-21X gives the tightest spot.
• Measure your focal distance. 35 mm is fixed. Plan your mount.
• For cold stores, this lens works down to -40°C.
• For hot lines, it works up to +70°C.
• Order spare lenses for high-vibration cells.
• Confirm your amplifier supports the fiber unit.

Questions? Email sales@powergearx.com or message us on +86 18030005825 via WhatsApp.

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