• Blue bandpass filter with black rim on a white background
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MVBP430-35 Bandpass Filter(CWL=430nm,FWHM=35nm)

MVBP430-35 Bandpass Filter(CWL=430nm,FWHM=35nm)

PartNumber:SO3010140

$45.00 USD
$45.00 USD
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Shipping calculated at checkout.

73 in stock

Center Wavelength (CWL)
Optical Density // Peak Transmission (Tpk)
Dimension

In Stock.

Ships within 5 working days of order. Customs handling including. (DDP)

Net 30 payment terms for organizational purchase orders.

SO3010140-d12.5u

Email shop@syronoptics.com For Customization Options

This MVBP430-35 Bandpass Filter is designed to transmit a narrow band around 430 nm while reducing out-of-band light. It is suitable for machine vision, fluorescence imaging, and optical inspection systems using blue LED or blue laser illumination. It helps isolate the target signal, reduce background light, and improve contrast.

Key specifications:

  • Wavelength / main spec: 430 nm center wavelength (CWL)
  • Bandwidth / transition spec: 35 nm FWHM
  • Transmission / blocking: T >90%; OD2 blocking from 300-1100 nm
  • Format / custom option: Available in Dia 12.5mm to dia 34mm (mounted/unmounted), M25.5x0.5mm to M55x0.75mm(mounted); Custom sizes and mounting options available on request

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
  • BP430-35 Bandpass Filter - Mercury Line Isolation (g-line)

    BP430-35 Bandpass Filter - Mercury Line Isolation (g-line)

    Mercury Line Isolation (g-line)

    • The mercury arc spectrum has a very strong emission line at 436nm (the g-line).
    • Since the filter bandwidth extends to ~447.5nm, it will effectively capture and isolate this high-energy peak while blocking other mercury lines (like the 405nm h-line or 546nm e-line). This is common in photolithography and fluorescence microscopy.

    Recommended Light Sources

    • High-Pressure Mercury (Hg) Arc Lamp: It natively emits the intense 436nm "g-line" spectral peak, providing the exact high-energy output that the BP430-35 filter is designed to isolate while effectively stripping away the unwanted 405nm and 546nm lines.
    • Mercury-Xenon (Hg-Xe) Lamp: It retains the strong 436nm mercury emission required for the application but offers superior arc stability and higher overall radiance compared to standard mercury lamps, which is critical for consistent exposure in photolithography.
  • BP430-35 Bandpass Filter - Fluorescence Excitation

    BP430-35 Bandpass Filter - Fluorescence Excitation

    Fluorescence Excitation

    • This filter serves as an excellent excitation filter for fluorophores that absorb in the violet-blue range.
    • Chlorophyll Absorption: Chlorophyll a and b have strong absorption peaks near 430nm (the Soret band). This filter can be used in agronomy or plant stress analysis to stimulate chlorophyll fluorescence.
    • Specific Dyes: It is suitable for exciting dyes like Auramine O, Lucifer Yellow, or Tetracycline.

    Recommended Light Sources

    • High-Power LED (430nm or 435nm peak): Precision & Sample Safety
      This is the modern standard for this application. The LED's output peak (430–435nm) aligns perfectly with the excitation maxima of Auramine O (432nm) and Lucifer Yellow (428nm). It produces minimal heat compared to arc lamps, which is critical for agronomy to prevent thermal stress or damage to live plant samples during chlorophyll analysis.
    • Mercury Arc Lamp: Signal Intensity
      The BP430-35 filter is specifically designed to capture the 436nm mercury g-line, which sits comfortably within the filter's bandwidth (412nm–448nm). This source provides extremely high irradiance at this specific wavelength, making it ideal for detecting low concentrations of dyes like Tetracycline or visualizing weak fluorescence signals that require maximum excitation energy.
    • Xenon Arc Lamp: Spectral Versatility
      Unlike Mercury lamps which have peaks and valleys, Xenon provides a continuous, high-intensity spectrum across the violet-blue range. This ensures consistent excitation energy even if a specific dye's absorption peak shifts slightly due to solvent conditions or pH (common with Tetracycline and biological derivatives).

Fequently Asked Questions

Will this filter work at an angle?

This filter is optimized for near normal incidence. At larger angles, the center wavelength may shift, which can affect performance. If your system operates at an angle, we recommend validating with a sample.

Can I stack this filter with other filters?

Yes, filters can be stacked to achieve additional blocking or spectral shaping. However, stacking may introduce reflection losses and should be tested in your system.

Can I request a custom wavelength or size?

Yes, we support custom center wavelength (CWL), bandwidth (FWHM), dimensions, and mounting options. Contact us with your requirements for recommendations.

What is the difference between mounted and unmounted filters?

Unmounted filters are bare optics suitable if you already have a holder. Mounted filters come in an anodized aluminum ring (with or without threading) for easier system integration.

  • dia12.5mm(unmounted)

    Clear Aperture:

    >90%

    Mounting Thickness:

    n.a

    Internal/External Thread:

    n.a/n.a

  • dia12.5mm(mounted)

    Clear Aperture:

    dia9mm

    Mounting Thickness:

    3.5mm

    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

  • M25.5x0.5mm(mounted)

    Clear Aperture:

    dia20.5mm

    Mounting Thickness:

    6.5mm

    Internal/External Thread:

    M25.5x0.5mm/M25.5x0.5mm

  • M27x0.5mm(mounted)

    Clear Aperture:

    dia22mm

    Mounting Thickness:

    6.5mm

    Internal/External Thread:

    M27x0.5mm/M27x0.5mm

  • M30.5x0.5mm(mounted)

    Clear Aperture:

    dia25.5mm

    Mounting Thickness:

    6.5mm

    Internal/External Thread:

    M30.5x0.5mm/M30.5x0.5mm

  • M34x0.5mm(mounted)

    Clear Aperture:

    dia29mm

    Mounting Thickness:

    6.5mm

    Internal/External Thread:

    M34x0.5mm/M34x0.5mm

  • M35.5x0.5mm(mounted)

    Clear Aperture:

    dia30.5mm

    Mounting Thickness:

    6.5mm

    Internal/External Thread:

    M35.5x0.5mm/M35.5x0.5mm

  • M37x0.5mm(mounted)

    Clear Aperture:

    dia32mm

    Mounting Thickness:

    6.5mm

    Internal/External Thread:

    M37x0.5mm/M37x0.5mm

  • M52x0.75mm(mounted)

    Clear Aperture:

    dia47mm

    Mounting Thickness:

    6.5mm

    Internal/External Thread:

    M52x0.75mm/M52x0.75mm

  • M55x0.75mm(mounted)

    Clear Aperture:

    dia50mm

    Mounting Thickness:

    6.5mm

    Internal/External Thread:

    M55x0.75mm/M55x0.75mm

  • dia27mm(unmounted)

    Clear Aperture:

    >90%

    Mounting Thickness:

    n.a

    Internal/External Thread:

    n.a/n.a

  • dia34mm(unmounted)

    Clear Aperture:

    >90%

    Mounting Thickness:

    n.a

    Internal/External Thread:

    n.a/n.a

Not sure if this filter fits your system?

We can help you choose the right filter based on your wavelength, light source, and setup.