• A plot showing the transmission rate on the y-axis against wavelength on the x-axis for a bandpass filter with a central wavelength of 815nm and a bandwidth of 25nm.
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BP815-25 Bandpass Filter(CWL=815nm,FWHM=25nm)

BP815-25 Bandpass Filter(CWL=815nm,FWHM=25nm)

PN:SO3010578

$50.00 USD
$50.00 USD
Sale Sold out
Shipping calculated at checkout.
Center Wavelength (CWL) // FWHM
Optical Density // Peak Transmission (Tpk)
Dimension

Ultra-Precision Near-Infrared Bandpass Filter - 815nm

The BP815-25 represents the pinnacle of spectral precision with its meticulously engineered 815nm center wavelength and ultra-narrow 25nm full-width half-maximum (FWHM). This research-grade filter delivers exceptional spectral selectivity for the most demanding near-infrared applications where ultra-precise wavelength control and maximum spectral purity are absolutely critical.

Ultra-Precision Features:

  • Precise 815nm Center: Meticulously positioned for critical NIR applications and optimal biological transparency
  • Ultra-Narrow 25nm Bandwidth: Exceptional spectral resolution for ultra-high-precision measurements
  • Maximum Blocking: Superior out-of-band rejection for pristine spectral isolation
  • Premium Multi-Layer Coatings: Advanced interference coatings for optimal transmission and durability
  • Research Grade Construction: Built to the highest standards for demanding scientific environments

Critical Applications:

Essential for ultra-high-resolution NIR spectroscopy, precision laser applications, advanced fluorescence microscopy, and critical analytical instrumentation. This filter excels in applications requiring maximum spectral purity at 815nm, including laser line isolation, specific molecular transition studies, and precision optical sensing where even minimal spectral contamination is unacceptable.

Technical Superiority:

The 25nm bandwidth provides unmatched spectral discrimination, making it perfect for isolating the most specific spectral features while completely eliminating interference from adjacent wavelengths. Ideal for cutting-edge research applications where spectral purity is the ultimate priority.

Ultra-precision engineering for researchers who accept nothing less than absolute spectral perfection.

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 shop@syronoptics.com to get raw data.

Shipment & Delivery

For stocked products, shipment will usually be made within 5 working days after order.

For customized products, shipment will usually be made within 4-8 weeks after order.

Return & Refund

Stocked Product are eligible to return within 7 days after receiving.

A flat rate of 35$ will be charged for returning.

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 shop@syronoptics.com for details.

Optical dicing refers to precision cutting processes used to segment optical materials, particularly those with specialized coatings, into smaller functional components while maintaining their structural and optical integrity. In the context of optical coating flats (flat substrates like glass, fused silica, or semiconductors coated with anti-reflective, dielectric, or other optical layers), dicing ensures these coated substrates meet exact dimensional requirements for applications in photonics, lasers, sensors, and semiconductor devices.

Methods

  • Saw Dicing: Diamond-coated blades for clean cuts with minimal chipping.
  • Laser Dicing: Non-contact ablation for delicate or brittle materials, reducing mechanical stress.
  • Plasma Dicing: Dry etching for ultra-fine features, ideal for advanced semiconductor wafers.

Price

Dicing Service will generally cost from $50 to $125 per piece. Depending on the accuracy and size you are requesting.

Packaging

If you need generic packaging, please leave "Generic" in the note when placing order.

In such case:

  • No Branding information in Packaging Materials
  • All Documentation will be generic
  • We will send image of the parcel to you before fulfilling shipment
  • You can use your document template for the shipment.

Feel free to contact shop@syronoptics.com for details.

Payment

Payment could be done online with Credit Card, Apple Pay, Google Pay, Wechat Pay and Alipay

For amount under $200 you can request to make payment within 7days after receiving the order.

View full details

Fequently Asked Questions

What are the Thickness of the Optical Filters?

For Mounted Optics:

  • 6mm (by Default)
  • 3.5mm (Specified in Order Note)

For Unmounted Optics:

  • 0.5mm
  • 1.1mm
  • 2mm

(most of the unmounted optics are having thickness of 1.1mm ~ 2mm)

What is the difference between 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 (Usually Thorlabs):

  • 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.

Standard Mountings

Camera Mounting List

  • Our filters can be cut to match the mounting on the list. Please contact us for getting quotation.

Need any help?

Other Wavelength

UV Bandpass Filter (100-400nm)

VIS Bandpass Filter (400-800nm)

NIR Bandpass Filter (800-1400nm)