• Graph showing the transmission percentage of a LP675 longpass filter against wavelength, with a cut-on wavelength marked at 675nm and an OD5 blocking range indicated.
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LP675 Longpass Filter (T>85%@685-1750nm, OD5@200-665nm)

LP675 Longpass Filter (T>85%@685-1750nm, OD5@200-665nm)

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

Professional LP675 Longpass Filter - Red to Near-Infrared Optical Filtering

The LP675 Longpass Filter is engineered for demanding red to near-infrared applications requiring precise wavelength separation at 675nm. With reliable 85% transmission efficiency and superior OD5 blocking, this filter delivers exceptional performance for advanced optical systems with an extended spectral range up to 1750nm.

Technical Specifications:

  • Cut-on Wavelength: 675nm (T=50%)
  • Good Transmission: T>85% @ 685-1750nm
  • Superior Blocking: OD5 @ 200-665nm

Key Applications:

  • Far-Red Fluorescence Imaging: Perfect for far-red fluorophore detection and imaging
  • Confocal Microscopy: Ideal for red channel detection in multi-color systems
  • Flow Cytometry: Optimal for far-red fluorescent protein detection
  • Biomedical Imaging: Excellent for deep tissue penetration studies
  • Laser Applications: Effective filtering for 633nm and 647nm laser systems
  • Material Analysis: Perfect for polymer and pharmaceutical characterization

Performance Features:

  • Sharp transition edge for precise 675nm 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 autofluorescence for sensitive detection
  • Stable performance under intense illumination

Technical Advantages:

  • Extended Range: Broad transmission window from 685nm to 1750nm
  • Superior Blocking: OD5 performance ensures excellent rejection of unwanted wavelengths
  • Research Grade: Professional quality for scientific applications
  • Far-Red Optimized: Specifically designed for far-red applications

Application Areas:

  • Life Sciences: Far-red fluorescence imaging and detection
  • Medical Diagnostics: Non-invasive imaging and analysis
  • Industrial Inspection: Quality control and material analysis
  • Research: Advanced optical characterization studies

Quality & Reliability:

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

Perfect for: Far-red fluorescence microscopy, biomedical imaging, laser applications, and optical systems requiring reliable red to near-infrared 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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