• Graph showing the transmission percentage on the y-axis against wavelength on the x-axis for a LP940 Longpass Filter, indicating a cut-on wavelength and transmission range.
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LP940 Longpass Filter (T>85%@950-1100nm, OD2@350-930nm)

LP940 Longpass Filter (T>85%@950-1100nm, OD2@350-930nm)

$50.00 USD
$50.00 USD
Sale Sold out
Shipping calculated at checkout.
Cut-on Wavelength
Transmission // Blocking
Dimension

Professional LP940 Longpass Filter - Near-Infrared Optical Filtering

The LP940 Longpass Filter is engineered for specialized near-infrared applications requiring precise wavelength separation at 940nm. With reliable 85% transmission efficiency and effective OD2 blocking, this filter delivers consistent performance for advanced optical systems operating in the NIR spectrum.

Technical Specifications:

  • Cut-on Wavelength: 940nm (T=50%)
  • Good Transmission: T>85% @ 950-1100nm
  • Effective Blocking: OD2 @ 350-930nm

Key Applications:

  • 940nm Laser Systems: Perfect for high-power infrared diode lasers
  • Night Vision Systems: Essential for infrared imaging and surveillance
  • Biomedical Imaging: Ideal for deep tissue penetration studies
  • Machine Vision: Optimal for industrial inspection and quality control
  • Spectroscopy: Precise NIR wavelength discrimination
  • Remote Sensing: Environmental monitoring and analysis applications

Performance Features:

  • Sharp transition edge for precise 940nm cutoff
  • Reliable 85% transmission minimizes signal loss
  • OD2 blocking provides effective background suppression
  • Optimized for NIR band (950-1100nm)
  • Consistent performance across filter aperture
  • Low scatter for clean optical systems
  • Stable performance under high-power conditions

Technical Advantages:

  • 940nm Optimized: Specifically designed for 940nm infrared applications
  • Reliable Performance: Consistent transmission in critical NIR range
  • Industrial Grade: Suitable for demanding optical environments
  • Cost-Effective: Balanced performance for practical applications

Application Areas:

  • Security Systems: Infrared surveillance and night vision equipment
  • Medical Devices: Non-invasive diagnostic and therapeutic systems
  • Industrial Automation: Machine vision and process monitoring
  • Research: NIR spectroscopy and optical characterization

Quality & Reliability:

  • Professional optical coatings for consistent performance
  • Quality control testing ensures specification compliance
  • Compatible with standard optical mounts
  • Suitable for both research and industrial applications
  • Designed for high-power infrared laser environments

Perfect for: 940nm infrared laser systems, night vision applications, biomedical NIR imaging, and industrial optical systems requiring reliable near-infrared filtering with effective visible light blocking.

Transmission & OD Data

The transmission curve is typical. Actual data may vary from lot to lot, you can request the raw Transmission and OD data from us.

Copy the link of the product page and send email to info@syronoptics.com to get raw data.

Shipment & Delivery

Shipment will usually be made within 5 working days after order.

Delivery from local warehouse is available for below countries and region.

  1. USA
  2. UK
  3. Europe
  4. China
  5. Singapore

To request shipment from local warehouse you need to provide your order number to order@syronoptics.com and inform us from which warehouse you want to initial the shipment.

Return & Refund

Stocked Product are eligible to return within 7 days after receiving.

A flat rate of 35$ will be charged for returning.

Payment Notice

Payment could be done online with Credit Card, Apple Pay, Google Pay.

Amount will not be deducted immediately after you authorized the payment. We will share raw data for confirmation by email, only after confirmation the amount will be deducted.

For amount under $100 you can request to make payment within 7 days after received the product. (NET7)

Custom Sizing

Custom sizing is available for dimension under 60x60mm. Without mounting the thickness will generally ranging from 0.5-3mm.

For bigger size, contact info@syronoptics.com for details.

Custom Mounting

We have filter mounting option including:

  • Threaded Mounting
  • Retaining Ring
  • Filter Wheel
  • Filter Cube
  • Filter Slide

Buy in Bulk

For order quantity (or equal coating size) above 100pcs x dia25mm filters. Discount will be available.

Generally the discount will be ranging from 10 - 50% depending on the quantity and specification you are ordering.

lp360-d12.5

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FAQs

What is the thickness of the filter?

The substrate thickness may vary from 0.5 - 2.0mm. You can send email to us for requesting the detail information.

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