Fiber optic collimators are used to emit light from an optical fiber into a free-space collimated beam with a specified beam diameter or spot size. They can also be used in reverse to focus light into an optical fiber. In practice, a simple collimating lens is sufficient for this purpose. However, for this to work, the end of the optical fiber must be firmly positioned at a distance from the lens approximately equal to its focal length, which makes it impractical and unreliable.

Specifications

Focal Length: 60~160mm

Matching Fiber NA: <0.08

Maximum Output Spot: 25.6mm

Divergence Angle Adjustment: Positive and negative defocus

Overall Dimensions: Φ79×299.7mm

Water Cooling Interface: M5, compatible with 4×6mm tube

Output Interface: M40×0.75

Features

Variable beam expander integrated with collimator, simple and convenient debugging;

Supports QBH connection, integrated connection with fiber laser output;

Easily achieves variable spot size for collimated output;

Adjustable focus size under the same focal length focusing system, highly suitable for laser 3D printing and laser process development;

Operating Power: >1000W (14um single mode)