• BLT310_BLT421S_collimation_lens
  • bochu_BLT310_BLT421S_focus_lens
  • bochu_focus_lens_and_collimation_lens
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UMAK laser

BOCI BLT421S / BLT310 Fiber Laser Cutting Head Focus Lens Assembly

BOCI BLT421S / BLT310 Fiber Laser Cutting Head Focus Lens Assembly

FL-F100-BLT421S-A-1

$199.00
$300.00 $199.00
할인 품절
배송료는 결제 시 계산됩니다.
Type

Product: D32 Focus Lens Assembly and Collimation lens Assembly

Compatible Brand: BOCI

Model: BLT421S, BLT421TS, BLT310, BLT310T

Material: Fused Silic

Wavelength: 1064nm

Coating: Double size Anti-Reflection Coating

The fiber laser focus lens assembly is a critical optical component inside the laser cutting head, responsible for accurately focusing the laser beam onto the metal surface.

This replacement focus lens assembly is designed for BOCI fiber laser cutting heads and provides stable optical performance, excellent laser transmission, and consistent cutting quality.

Manufactured with precision optical processing technology and high-quality lens materials, it is suitable for industrial laser cutting applications and professional maintenance.

Ideal for:

  • Laser machine manufacturers
  • Laser spare parts distributors
  • Industrial laser users
  • Maintenance service providers
전체 세부 정보 보기

Above information only for BOCI BLT brand laser cutting head and all specification as reference only. Please contact our salesman before order to guarantee you will get the correct model.

Check the label information of your laser head first to confirm its model and focus lens specification. Than choose the correct lens for your laser head
bochu_focus_lens_and_collimation_lens

Package Details

  • All laser focus lens and collimating lens have protective film than put inside of plastic bag.
  • Out package use box and have foam inside of box.
  • Every window is packaged individually

Shipping & Delivery

  • Delivery Time: 48 hours after payment.
  • Worldwide Shipping
  • UPS/ FEDEX/ DHL/ Air Freight etc available.

FAQ

  • Q1: When should we replace focus lens and collimating lens?

    When the cutting surface becomes rough or won't penetrate. you may need change focus lens.

  • Q2: Which focal length lens should I choose – 100mm, 125mm, or 150mm?

    You need change your laer head label to confirm which focal length you are using.

    Pls inquiry engineer first if you want to use different focal length to avoid unnecessary damage.

  • Q3: Why do your lenses cost more than other suppliers on Alibaba?

    Good question. The price difference mainly comes from the coating quality and substrate material.

    We use high grade Fused Silica, double-sided AR coating process, transmission > 99.8%

  • Q4: How should I install and clean the lens to avoid damaging it?

    ✅ DOs:

    • Wear nitrile gloves – skin oils will burn into the coating
    • Use lens tissue + reagent-grade acetone or ethanol (≥99.5%)
    • Wipe in one direction (not back-and-forth) with light pressure
    • Check the O-ring seal when re-installing – a damaged seal ruins the lens faster than anything else
    • Mark the installation direction – the coated side usually faces the laser source (check your old lens or manual)

    ❌ DON'Ts:

    • Never touch the optical surface with bare fingers
    • Never use compressed air to blow dust off – it may contain moisture/oil
    • Never reuse cleaning tissue
    • Never over-tighten the retaining ring – finger-tight + ¼ turn is enough

    🚨 Warning: Most lens failures are caused by improper cleaning or installation, not by the lens quality itself. We include a QR code in every package – scan it to watch a 2-minute installation video.

Inquiry