The Keyence F-6HA is a small beam spot lens designed for fiber optic sensing systems. It attaches to the end of compatible fiber units and concentrates the emitted light into a tighter beam. This action improves detection accuracy for tiny targets. Because the spot diameter shrinks, the sensor can distinguish small features on PCBs, connectors, and精密 parts. Furthermore, the F-6HA works across a wide temperature range of -40 to +70 °C. That tolerance suits both cold storage and heated production zones. Meanwhile, the lens weighs only about 5 g, so it adds almost no load to the fiber head. As a result, the F-6HA is a practical accessory for precision detection tasks.
The F-6HA delivers specific optical performance with matched fiber units. First, the spot diameter is approximately 1.0 mm when paired with the FU-21X. Second, the spot grows to about 2.0 mm with the FU-35FZ, FU-35FG, FU-35FA, FU-35TZ, and FU-35TG. Moreover, the detection focal distance is 35 ±3 mm for all compatible combinations. This fixed working distance helps users position the fiber head consistently. In addition, the lens mounts directly onto the fiber unit without extra adapters. The small beam spot improves resolution when detecting thin wires or small holes.
The F-6HA pairs with six Keyence fiber units. Specifically, these units include the FU-21X, FU-35FZ, FU-35FG, FU-35FA, FU-35TZ, and FU-35TG. Each combination produces a different spot size, as noted above. Therefore, users should select the fiber unit that matches their target size and sensing distance. Besides spot size, the focal distance stays the same across all pairings. This consistency simplifies changeover when swapping fiber types on a machine.
The F-6HA operates from -40 to +70 °C without special handling. This wide range covers most industrial environments, including cold rooms and hot process areas. The lens body weighs approximately 5 g, which keeps the fiber assembly light. Additionally, the compact design fits into tight spaces near the target. The lens protects the fiber tip from direct contact with debris. Meanwhile, its small size allows installation without major bracket changes.
Installation of the F-6HA takes only a few steps. First, remove the protective cap from the compatible fiber unit. Next, screw or press the lens onto the fiber head until it seats fully. After that, position the fiber so the target sits at 35 ±3 mm from the lens face. Additionally, adjust the amplifier gain to match the smaller spot. However, avoid over-tightening the lens, which can damage the fiber tip. Finally, verify detection stability with a test target before production runs.
1 × Keyence F-6HA Small Beam Spot Lens
Q1: What does the F-6HA lens do?
A: The F-6HA narrows the fiber light into a small spot. This improves detection of tiny objects.
Q2: Which fiber units work with this lens?
A: It fits the FU-21X, FU-35FZ, FU-35FG, FU-35FA, FU-35TZ, and FU-35TG.
Q3: What is the spot diameter with the FU-21X?
A: With the FU-21X, the F-6HA produces a spot of about 1.0 mm.
Q4: What is the focal distance?
A: The detection focal distance is 35 ±3 mm for all compatible fiber units.
Q5: How do you ship this product?
A: We ship via Fedex, UPS, and DHL for global delivery.
| Brand Name | |
| Model No. | F-6HA |
| Product Type | Small Beam Spot Lens |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
