Fibre Unit FU series

Wide Range of Fibre Optic Sensor Heads for Your Application Needs

FU series - Fibre Unit

Complete line of fibre units from Unbreakable Fibre, Long-distance and small spot. Select the type best suited to your application

Solve Any and All Applications

KEYENCE has a wide variety of fibre units, which enables us to provide our customers with the optimum fibre unit for each application or usage environment.

  • Accurate, stable operation & simple setup
  • Over 100 types of fibre units

More Details


Hex-shaped sensor head

Hex-shaped Heads

Easy, trouble-free mounting. Unbreakable fibre exits the housing at a right angle, like a periscope.

Toughflex sensor head

ToughFlex Heads

A flexible stainless steel jacket protects the fibre from daily wear.

Wide area head

Wide Area Heads

With the addition of the new array sensor, the FU Series can now be used in an even wider range of applications.

Small spot sensor head

Small Beam Spot Heads

Simplifies setup and helps reduce installation time.

Thin sleeve sensor head

Thin Sleeve Heads

Thin sleeve, thrubeam type for use in tight locations.

High flex sensor head

High-flex Heads

High-flex, reflective type provides higher flexibility than an electrical wire.

Narrowbeam sensor head

Narrow Beam Heads

Long-distance, side-view type. High-power unit with a side-view lens built in.

Heat Resistant sensor head

Heat Resistant Heads

Heat resistant fibre type. Resists temperatures up to 350 ℃ (+662 ℉)

Liquid level sensor head

Liquid Level Heads

ToughFlex tube-mountable liquid level detection type.

Long distance sensor head

Long Distance Heads

ULTRA long detecting distance up to 900 mm (FU-61), 1800 mm (FU-71).

Semiconductor, liquid crystal sensor head

Semiconductor/Liquid Crystal Detection Heads

Long detecting distance, definite-reflective type. Suitable for circuit board deflection detection and wafer mapping.