• Graph showing the transmission rate of a longpass filter against wavelength, with a cut-on wavelength of 370nm and a blocking range of OD5 at 200-360nm.
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LP370 Longpass Filter (T>85%@380-1100nm, OD5@200-360nm)

LP370 Longpass Filter (T>85%@380-1100nm, OD5@200-360nm)

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

Professional LP370 Longpass Filter - UV-A to Near-Infrared Optical Filtering

The LP370 Longpass Filter is engineered for demanding UV-A to near-infrared applications requiring precise wavelength separation at 370nm. With reliable 85% transmission efficiency and superior OD5 blocking, this filter delivers exceptional performance for advanced optical systems and Raman spectroscopy applications across a broad spectral range up to 1100nm.

Technical Specifications:

  • Cut-on Wavelength: 370nm (T=50%)
  • Good Transmission: T>85% @ 380-1100nm
  • Superior Blocking: OD5 @ 200-360nm

Key Applications:

  • Raman Spectroscopy: Essential for UV laser-based Raman systems
  • UV-A Fluorescence Imaging: Perfect for UV-A fluorophore detection
  • Confocal Microscopy: Ideal for multi-color imaging with UV excitation
  • Flow Cytometry: Optimal for UV laser line separation
  • Material Analysis: Comprehensive characterization from UV-A to NIR
  • Photochemistry: UV-initiated reaction monitoring and analysis

Performance Features:

  • Sharp transition edge for precise 370nm cutoff
  • Reliable 85% transmission minimizes signal loss
  • OD5 blocking provides excellent background suppression
  • Broad spectral range from UV-A to near-infrared (380-1100nm)
  • Consistent performance across entire filter aperture
  • Low scatter for clean Raman measurements
  • Stable performance under UV illumination

Raman Spectroscopy Advantages:

  • UV Laser Compatible: Specifically designed for UV laser Raman systems
  • Superior Blocking: OD5 performance ensures excellent rejection of laser line
  • Research Grade: Professional quality for analytical applications
  • Low Fluorescence: Minimal background interference for sensitive measurements

Application Areas:

  • Analytical Chemistry: UV Raman spectroscopy and molecular analysis
  • Life Sciences: UV-A fluorescence imaging and protein studies
  • Materials Science: UV-initiated photochemical processes
  • Industrial Inspection: Quality control and material characterization

Quality & Reliability:

  • Advanced multi-layer coating technology for UV applications
  • Rigorous quality control ensures specification compliance
  • Compatible with standard optical mounts and Raman systems
  • Suitable for both research and industrial applications
  • Designed for high-intensity UV laser environments

Perfect for: UV Raman spectroscopy systems, UV-A fluorescence microscopy, photochemistry applications, and optical systems requiring reliable UV-A to near-infrared filtering with excellent UV-B and UV-C 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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