• A graph showing the transmission percentage on the y-axis against wavelength on the x-axis for a shortpass filter with a cut-off wavelength of 440nm.
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SP440 Shortpass Filter (T＞85%@380-435nm,OD3@200-1100nm)

SP440 Shortpass Filter (T＞85%@380-435nm,OD3@200-1100nm)

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

SP440 Shortpass Filter - UV-Violet Wavelength Control

The SP440 Shortpass Filter delivers excellent optical performance with high transmission in the UV-violet region and reliable OD3 blocking, making it ideal for applications requiring precise short wavelength control with comprehensive visible to infrared rejection.

Key Specifications:

  • Cut-off Wavelength: 440nm (T=50%)
  • High Transmission Range: T>85% @ 380-435nm
  • Reliable Blocking Range: OD3 @ 200-1100nm
  • Optical Density: >1000:1 blocking ratio
  • UV-Violet Coverage: 55nm transmission bandwidth

Applications & Benefits:

  • UV-Violet Spectroscopy: Perfect for analyzing UV and violet wavelengths while blocking blue and longer wavelengths
  • Fluorescence Microscopy: Prevents blue and visible excitation bleed-through in UV fluorophore imaging
  • LED Characterization: Ideal for testing UV and violet LEDs while blocking blue components
  • Photochemistry Applications: Enables precise UV-violet light studies without longer wavelength interference
  • Semiconductor Inspection: Optimized for UV inspection systems requiring blue light rejection

Technical Advantages:

  • High transmission efficiency in UV-violet region maximizes signal
  • Reliable OD3 blocking prevents detector saturation from longer wavelengths
  • Sharp transition at 440nm for precise spectral separation
  • Comprehensive blocking from UV to NIR prevents unwanted interference
  • Excellent UV transmission for broadband short wavelength applications
  • Durable multi-layer coating ensures consistent performance

Essential for researchers and engineers working with UV-violet wavelengths who need comprehensive longer wavelength blocking. This filter provides the precision and reliable blocking required for UV spectroscopy, fluorescence microscopy, and optical systems where accurate short wavelength transmission with superior blue to infrared rejection is critical.

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.

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