• A plot showing the transmission of a bandpass filter with a central wavelength (CWL) marked as 800nm and a bandwidth (FWHM) of 50nm. The x-axis represents wavelength in nanometers (nm), and the y-axis represents transmission.
  • Bandpass filter with a dark red center and black rim on a white background
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BP800-50 Bandpass Filter(CWL=800nm,FWHM=50nm)

BP800-50 Bandpass Filter(CWL=800nm,FWHM=50nm)

PartNumber:SO3010558

$55.00 USD
$55.00 USD
Sale Sold out
Shipping calculated at checkout.
Center Wavelength (CWL) // FWHM
Optical Density // Peak Transmission (Tpk)
Dimension

In Stock.

Ships within 5 working days of order.
  • Wavelength: 800nm center wavelength (CWL) for VIS-NIR transition imaging and spectroscopy
  • Spectral Features: 50nm FWHM bandwidth with high transmission and controlled edge slopes
  • Optical Density: OD5 blocking for superior out-of-band rejection
  • Filter Dimension Availability: Multiple mounting diameters available to fit standard optical systems

Request Raw Data

You can request the raw transmission data from us.

Copy the link of the product page and send email to shop@syronoptics.com, you will get reply within 1 working days.

Shipment & Delivery

  • Stocked products ship within 5 business days after order confirmation.
  • Custom-made products typically ship within 4–8 weeks.
  • Delivery times may be affected by holidays, customs clearance, or other unforeseen events.
  • Tracking information becomes available 3–5 days after dispatch when the parcel is handed to the local courier.
  • Some deliveries may require customer pickup. Please ensure your contact information is correct and respond promptly to courier communications.
  • General international parcel shipping cost: USD 35 (for reference).

Return & Refund

1. Eligible Products

Stocked (catalog) products with a unit price under USD 500 are eligible for return within 14 days after delivery.

Custom-made or non-stock items are not eligible for no-reason returns.

2. No-Reason Return (Buyer’s Remorse)

If you wish to return an item for reasons other than product defect or seller error:

  • Please email shop@syronoptics.com to request a return authorization and return address.
  • Buyer is responsible for all return shipping costs.
  • Items must be unused, in original condition, and with original packaging.
  • Refund will be issued after inspection of the returned item.

3. Seller’s Fault (Defective / Wrong / Damaged Item)

If the return is due to seller error (defective product, wrong item shipped, or damage during shipping):

Please provide clear evidence (photos or videos) showing the issue.

We will evaluate the case and either:

  • Provide a replacement, or
    Issue a refund (with or without requiring the item to be returned).
  • Return shipping cost will be covered by the seller in confirmed seller-fault cases.

4. Important Notes

  • Returned items are subject to inspection before refund approval.
  • Shipping fees, customs duties, and taxes are non-refundable unless the return is due to seller fault.
  • Unauthorized returns will not be accepted.

Custom Sizing

Custom sizing is available from 3 × 3 mm (or Ø5 mm) up to 60 × 60 mm. For custom cut sizes, please contact shop@syronoptics.com for a quotation.

Pricing is not significantly lower for small-size orders in low quantities due to operational costs.

Payment Terms

Payments can be made online using Credit Card, Apple Pay, Google Pay, WeChat Pay, and Alipay.

If you prefer to pay by bank transfer, please contact shop@syronoptics.com to request an invoice with our banking details.

If you require deferred payment terms, you may request NET 7 or NET 30 at the time of placing your order.

All requests for deferred payment are subject to approval and will be confirmed by SyronOptics via email.

View full details
  • BP800-50 Bandpass Filter - NIR Fluorescence Imaging (Life Sciences)

    BP800-50 Bandpass Filter - NIR Fluorescence Imaging (Life Sciences)

    NIR Fluorescence Imaging (Life Sciences)

    This is the most likely application for a filter with OD5 blocking (which blocks 99.999% of unwanted light). In fluorescence microscopy or in vivo imaging, you need this high level of blocking to reject the powerful excitation light and only detect the weak fluorescence emission from the sample.

    • Specific Use: Acting as an Emission Filter for NIR fluorophores.
    • Target Fluorophores:
    1. IRDye® 800CW: (Peak Excitation ~774 nm / Peak Emission ~789 nm). This filter (775–825 nm range) captures the emission peak while blocking the excitation source.
    2. Alexa Fluor® 790: (Peak Excitation ~792 nm / Peak Emission ~803 nm).
    3. Indocyanine Green (ICG): (Peak Excitation ~780 nm / Peak Emission ~830 nm). While an 830 nm filter is standard for ICG, an 800-50 filter captures the "shoulder" of the emission and is often used in multi-color setups to avoid crosstalk with longer-wavelength channels.

    Recommended Light Source

    • Excitation Lasers: 780 nm or 785 nm Laser Diodes. (Must be spectrally separated from the filter's 800 nm passband).
    • Filtered LEDs: High-power 740 nm or 770 nm LEDs equipped with a clean-up excitation filter to ensure no light leaks into the 800 nm detection range.
  • BP800-50 Bandpass Filter - Industrial Machine Vision & Inspection

    BP800-50 Bandpass Filter - Industrial Machine Vision & Inspection

    Industrial Machine Vision & Inspection

    In factory automation, 800 nm imaging is used to inspect products that may look different in infrared than in visible light (e.g., seeing through certain plastics, inspecting fruit/produce bruising, or OCR on printed circuits).

    • Specific Use: Improving contrast and removing ambient light interference.

    Recommended Light Source

    • Matched LEDs: 800 nm or 805 nm NIR LEDs.

    Why: In this application, the light source matches the filter. The filter blocks all ambient room light (visible sunlight, overhead fluorescents) and only accepts the specific 800 nm light from the machine vision illuminator, creating a high-contrast image.

Fequently Asked Questions

Different Types of Filter Mountings

Unmounted:

  • a bare glass optical filter

Mounted:

  • Smooth Mount for protection of the optics. No thread is there on the mount.

Metric Mount:

  • Start with M as prefix, usually seens as M25.5x0.5mm. Mostly used as camera filters

Imperial Mount:

  • Start with SM as prefix, usually seen SM1, SM05 etc... Mostly used in Optical system. (You will have a SM external thread to connecting to other objects)

C-Mount:

  • Very frequently used mounting. C-Mount is 1‘’-32TPI. And it is not the same thing as SM1, or M25.5x0.5mm.

What are the Thickness of the Optical Filters?

For Unmounted Optics:

  • 0.5mm
  • 1.1mm
  • 2.0mm

*Most of our optics are coming with 1.1mm and 2.0mm

With Standard Mounting (Mounted, No Thread):

  • 3.5mm (Default)
  • 6mm (Upon Request)

Thread Mounted:

  • 6mm - 8mm

  • dia12.5mm(mounted)

    Clear Aperture:

    dia9mm

    Mounting Thickness:

    3.5mm

    Internal/External Thread:

    n.a/n.a

  • dia12.5mm(unmounted)

    Clear Aperture:

    >90%

    Mounting Thickness:

    n.a

    Internal/External Thread:

    n.a/n.a

  • dia25mm(mounted)

    Clear Aperture:

    dia21mm

    Mounting Thickness:

    3.5mm

    Internal/External Thread:

    n.a/n.a

  • dia25mm(unmounted)

    Clear Aperture:

    >90%

    Mounting Thickness:

    n.a

    Internal/External Thread:

    n.a/n.a

  • SM05(0.535″-40TPI)

    Clear Aperture:

    dia9mm

    Mounting Thickness:

    7.62mm

    Internal/External Thread:

    SM05/SM05

  • SM1(1.035″-40TPI)

    Clear Aperture:

    dia21mm

    Mounting Thickness:

    7.62mm

    Internal/External Thread:

    SM1/SM1

  • C-Mount(1″-32TPI)

    Clear Aperture:

    dia21mm

    Mounting Thickness:

    Internal/External Thread:

    C-Mount/C-Mount

Need any help?