China BC / BCZ Series 45° Beam Combiner – Transmits IR (355nm–10.6μm) & Reflects Visible Alignment Beam (532/650nm) Manufacture and Factory

BC / BCZ Series 45° Beam Combiner – Transmits IR (355nm–10.6μm) & Reflects Visible Alignment Beam (532/650nm)

Our BC Series (BK7/Fused Silica) and BCZ Series (ZnSe) Beam Combiners are dichroic optics designed to merge an invisible infrared laser beam with a visible aiming beam at a 45° angle of incidence. The main laser (e.g., 1064nm fiber, 10.6μm CO₂, 532nm green, or 355nm UV) is transmitted through the combiner, while a visible pilot beam (typically 650nm red or 532nm green) is reflected at 90° and co‑aligned along the same optical path. This enables easy, safe alignment of high‑power IR lasers for cutting, welding, or marking.

Common Specifications:

Angle of incidence (AOI): 45°
Surface flatness: λ/4 per 1″ diameter @632.8nm
Surface quality: 40‑20 scratch/dig
Diameter tolerance: +0/-0.13mm
Thickness tolerance: ±0.25mm
Available diameters: 12.7mm to 50.8mm (custom sizes upon request)

Material: BK7/Fused Silica/ZnSe

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Beam Combiner

This series of Beam Combiners is made by BK7 (H-K9L) or Fused Silica. It merges two beams into one, whether ultra-violet, visible, or near infrared; it allows users to mix invisible and visible light with an easy means of alignmen.

ZnSe Beam Combiner is used for CO₂ laser system alignment. Designed at 45° angle of incidence, it transmits CO₂ laser beam and combines the beam with the 90° reflected visible alignment beam.