• A graph showing the transmission rate on the y-axis against wavelength in nanometers on the x-axis for a bandpass filter with a central wavelength of 460nm and a bandwidth of 20nm.
  • Blue bandpass filter with black rim on a white background
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BP460-20 Bandpass Filter(CWL=460nm,FWHM=20nm)

BP460-20 Bandpass Filter(CWL=460nm,FWHM=20nm)

PartNumber:SO3010168

$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: Center wavelength at 460nm for precise spectral targeting in the blue region
  • Spectral Features: Full Width Half Maximum (FWHM) of 20nm providing narrow bandwidth for fluorescence microscopy and precision spectroscopy
  • Optical Density: OD5 blocking for exceptional out-of-band rejection and superior signal isolation
  • Filter Dimension Availability: Multiple sizes available to fit standard optical systems and custom configurations

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
  • BP460-20 Bandpass Filter - Fluorescence Microscopy

    BP460-20 Bandpass Filter - Fluorescence Microscopy

    Fluorescence Microscopy

    Given the high transmission and deep blocking (OD5), this filter is most likely designed for fluorescence imaging. It can serve two distinct roles depending on the fluorophore:

    Role 1: Emission Filter (for Blue-Emitting Dyes)It isolates the blue fluorescence emitted by dyes excited by UV light.

    Target Fluorophores:

    • DAPI: (Peak emission ~461 nm) - This filter is a perfect match to capture the peak emission of DAPI while blocking excitation UV light.
    • Hoechst 33342 / 33258: (Peak emission ~461 nm) - Commonly used for nuclear staining in live or fixed cells.
    • Alexa Fluor 350 / AMCA: (Emission tail) - Captures the longer wavelength emission of these UV-excited blue dyes.
    • Coumarin / 7-AMC: Dyes often used in assays that fluoresce in the blue region.

    Role 2: Excitation Filter (for Green/Cyan Dyes)It filters a broadband light source to produce pure blue light (460 nm) to excite fluorophores that emit in the green/yellow spectrum.

    Target Fluorophores:

    • Acridine Orange (with RNA): Excitation peak ~460 nm.
    • Auramine O: Used for staining acid-fast bacteria (e.g., Tuberculosis).
    • EGFP / GFP: (Excitation shoulder) - While 488 nm is ideal, 460 nm can excite Green Fluorescent Protein, often used in dual-band setups.
    • Lucifer Yellow: Broad excitation range covers 460 nm.

    Recommended Light Sources

    • High-Power Blue LED (460 nm or 465 nm)
    • Diode Laser (450 nm / 460 nm / 465 nm)
    • Mercury (Hg) or Xenon (Xe) Arc Lamp
    • Lumencor / CoolLED Engines
  • BP460-20 Bandpass Filter - Machine Vision & Industrial Inspection - Wafer Inspection

    BP460-20 Bandpass Filter - Machine Vision & Industrial Inspection - Wafer Inspection

    Wafer Inspection

    460 nm light scatters more on small defects (particles, scratches) than longer wavelengths, making this filter useful for detecting micro-defects on silicon wafers.

    Recommended Light Sources

    • For Wafer Inspection targeting micro-defects via scattering, the recommended light source is a High-Intensity Blue LED (peak ~460–465 nm) configured for Darkfield Illumination.

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

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