• Graph showing the transmission percentage on the y-axis against wavelength on the x-axis for a longpass filter with a cut-on wavelength of 390nm, indicating the filter's transmission and blocking ranges.
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LP390 Longpass Filter (T>85%@400-2000nm, OD5@200-380nm)

LP390 Longpass Filter (T>85%@400-2000nm, OD5@200-380nm)

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

Professional LP390 Longpass Filter - Extended Range UV to Infrared Optical Filtering

The LP390 Longpass Filter is engineered for demanding UV to infrared applications requiring precise wavelength separation at 390nm. With reliable 85% transmission efficiency and superior OD5 blocking, this filter delivers exceptional performance for advanced optical systems with an extraordinary spectral range extending up to 2000nm.

Technical Specifications:

  • Cut-on Wavelength: 390nm (T=50%)
  • Good Transmission: T>85% @ 400-2000nm
  • Superior Blocking: OD5 @ 200-380nm

Key Applications:

  • UV-Visible-NIR Spectroscopy: Comprehensive spectral analysis across extended range
  • Broadband Imaging: Multi-spectral imaging from visible to infrared
  • Material Analysis: Complete characterization of optical materials
  • Solar Cell Testing: Full spectrum analysis for photovoltaic applications
  • Thermal Imaging: Extended infrared detection capabilities
  • Research Applications: Versatile filtering for diverse optical studies

Performance Features:

  • Sharp transition edge for precise 390nm cutoff
  • Reliable 85% transmission minimizes signal loss
  • OD5 blocking provides excellent background suppression
  • Extraordinary spectral range from visible to infrared (400-2000nm)
  • Consistent performance across entire filter aperture
  • Low scatter for clean optical systems
  • Stable performance across wide temperature range

Technical Advantages:

  • Extended Range: Unprecedented transmission window from 400nm to 2000nm
  • Superior Blocking: OD5 performance ensures excellent rejection of unwanted wavelengths
  • Research Grade: Professional quality for demanding scientific applications
  • Versatile Design: Single filter covers visible, NIR, and SWIR regions

Application Areas:

  • Scientific Research: Multi-spectral analysis and characterization
  • Industrial Inspection: Comprehensive material testing and quality control
  • Aerospace & Defense: Multi-band imaging and sensing applications
  • Environmental Monitoring: Broad spectrum remote sensing

Quality & Reliability:

  • Advanced multi-layer coating technology for extended range
  • Rigorous quality control ensures specification compliance
  • Compatible with standard optical mounts and systems
  • Suitable for both research and industrial applications
  • Designed for high-performance broadband optical systems

Perfect for: Extended range spectroscopy, broadband imaging, material analysis, and advanced optical systems requiring comprehensive wavelength coverage from visible to infrared with excellent UV 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.

View full details

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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