• Graph showing the transmission percentage on the y-axis against wavelength on the x-axis for a longpass filter with a peak transmission wavelength of 785nm and a blocking range.
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LP785 Longpass Filter (T>85%@795-1750nm, OD5@200-775nm)

LP785 Longpass Filter (T>85%@795-1750nm, OD5@200-775nm)

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

Professional LP785 Longpass Filter - Raman Spectroscopy Near-Infrared Filtering

The LP785 Longpass Filter is specifically engineered for demanding near-infrared applications, particularly Raman spectroscopy systems. With reliable 85% transmission efficiency and superior OD5 blocking, this filter delivers exceptional performance for advanced NIR optical systems with an extended spectral range up to 1750nm.

Technical Specifications:

  • Cut-on Wavelength: 785nm (T=50%)
  • Good Transmission: T>85% @ 795-1750nm
  • Superior Blocking: OD5 @ 200-775nm

Key Applications:

  • Raman Spectroscopy: Essential for 785nm laser-based Raman systems
  • NIR Fluorescence Imaging: Ideal for deep tissue imaging and biological studies
  • Biomedical Imaging: Perfect for non-invasive medical diagnostics
  • Material Analysis: Optimal for polymer, pharmaceutical, and chemical analysis
  • Laser Systems: Effective filtering for 785nm diode laser applications
  • Industrial Sensing: Quality control and process monitoring

Performance Features:

  • Sharp transition edge for precise 785nm cutoff
  • Reliable 85% transmission minimizes signal loss
  • OD5 blocking provides excellent background suppression
  • Extended spectral range to 1750nm for versatile applications
  • Consistent performance across entire filter aperture
  • Low scatter for clean Raman measurements
  • Stable performance under high-power laser conditions

Raman Spectroscopy Advantages:

  • 785nm Optimized: Specifically designed for 785nm 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: Raman spectroscopy and molecular analysis
  • Pharmaceutical: Drug identification and quality control
  • Materials Science: Polymer and composite characterization
  • Biomedical Research: Tissue analysis and diagnostic applications

Quality & Reliability:

  • Advanced multi-layer coating technology
  • Rigorous quality control ensures specification compliance
  • Compatible with standard optical mounts and Raman systems
  • Suitable for both research and industrial applications
  • Designed for high-power 785nm laser environments

Perfect for: Raman spectroscopy systems, 785nm laser applications, near-infrared analysis, and advanced optical systems requiring superior NIR filtering with extended transmission range and excellent 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.

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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