Sign In
Orders
en
- 简体中文
- English
Compare products
- Product Comparison
  
  Choose products to compare anywhere you see 'Add to Compare' or 'Compare' options displayed.
Shopping cart items Shopping cart items

Keyword search
Search
Submit search
newport Search
- Submit search

Standard Longpass Optical Filters

Products
Features
Resources
Contact Us

1 inch (25.4 mm) dielectric coated bandpass filter

Overview

These longpass edge filters are made with hard dielectric filter coatings, producing a very steep transition between passband and stopband making them far superior to absorptive colored glass filters.

Steep transition slope
High rejection stop band
High transmission pass band
Excellent temperature stability
Blocked to X-ray

See All Features

Products

Show entries

Search:

Compare	Model		Cut-on Wavelength	Cut-on Wavelength Tolerance	Transmittance Range	Availability	Price	Brand
10LWF-400-B Longpass Filter, Dielectric, 25.4 mm, 400 ± 5 nm Cut-On, 410 - 1200 nm $143.00 In Stock	10LWF-400-B Longpass Filter, Dielectric, 25.4 mm, 400 ± 5 nm Cut-On, 410 - 1200 nm	1.0	400 nm	± 5 nm	410 - 1200 nm	In Stock	$143.00	Newport
10LWF-450-B Longpass Filter, Dielectric, 25.4 mm, 450 ± 5 nm Cut-On, 460 - 1200 nm $143.00 In Stock	10LWF-450-B Longpass Filter, Dielectric, 25.4 mm, 450 ± 5 nm Cut-On, 460 - 1200 nm	2.0	450 nm	± 5 nm	460 - 1200 nm	In Stock	$143.00	Newport
10LWF-500-B Longpass Filter, Dielectric, 25.4 mm, 500 ± 5 nm Cut-On, 510 - 1200 nm $143.00 In Stock	10LWF-500-B Longpass Filter, Dielectric, 25.4 mm, 500 ± 5 nm Cut-On, 510 - 1200 nm	3.0	500 nm	± 5 nm	510 - 1200 nm	In Stock	$143.00	Newport
10LWF-550-B Longpass Filter, Dielectric, 25.4 mm, 550 ± 5 nm Cut-On, 560 - 1200 nm $143.00 In Stock	10LWF-550-B Longpass Filter, Dielectric, 25.4 mm, 550 ± 5 nm Cut-On, 560 - 1200 nm	4.0	550 nm	± 5 nm	560 - 1200 nm	In Stock	$143.00	Newport
10LWF-600-B Longpass Filter, Dielectric, 25.4 mm, 600 ± 5 nm Cut-On, 610 - 1200 nm $143.00 In Stock	10LWF-600-B Longpass Filter, Dielectric, 25.4 mm, 600 ± 5 nm Cut-On, 610 - 1200 nm	5.0	600 nm	± 5 nm	610 - 1200 nm	In Stock	$143.00	Newport
10LWF-650-B Longpass Filter, Dielectric, 25.4 mm, 650 ± 5 nm Cut-On, 660 - 1200 nm $143.00 In Stock	10LWF-650-B Longpass Filter, Dielectric, 25.4 mm, 650 ± 5 nm Cut-On, 660 - 1200 nm	6.0	650 nm	± 5 nm	660 - 1200 nm	In Stock	$143.00	Newport
10LWF-700-B Longpass Filter, Dielectric, 25.4 mm, 700 ±6 nm Cut-On, 715 - 1200 nm $143.00 3 Weeks	10LWF-700-B Longpass Filter, Dielectric, 25.4 mm, 700 ±6 nm Cut-On, 715 - 1200 nm	7.0	700 nm	± 6 nm	715 - 1200 nm	3 Weeks	$143.00	Newport
10LWF-750-B Longpass Filter, Dielectric, 25.4 mm, 750 ± 6 nm Cut-On, 765 - 1200 nm $143.00 In Stock	10LWF-750-B Longpass Filter, Dielectric, 25.4 mm, 750 ± 6 nm Cut-On, 765 - 1200 nm	8.0	750 nm	± 6 nm	765 - 1200 nm	In Stock	$143.00	Newport
10LWF-800-B Longpass Filter, Dielectric, 25.4 mm, 800 ± 6 nm Cut-On, 815 - 1200 nm $143.00 In Stock	10LWF-800-B Longpass Filter, Dielectric, 25.4 mm, 800 ± 6 nm Cut-On, 815 - 1200 nm	9.0	800 nm	± 6 nm	815 - 1200 nm	In Stock	$143.00	Newport
10LWF-850-B Longpass Filter, Dielectric, 25.4 mm, 850 ± 7 nm Cut-On, 865 - 1200 nm $143.00 In Stock	10LWF-850-B Longpass Filter, Dielectric, 25.4 mm, 850 ± 7 nm Cut-On, 865 - 1200 nm	10.0	850 nm	± 6 nm	865 - 1200 nm	In Stock	$143.00	Newport
10LWF-900-B Longpass Filter, Dielectric, 25.4 mm, 900 ± 7 nm Cut-On, 920 - 1200 nm $143.00 In Stock	10LWF-900-B Longpass Filter, Dielectric, 25.4 mm, 900 ± 7 nm Cut-On, 920 - 1200 nm	11.0	900 nm	± 7 nm	920 - 1200 nm	In Stock	$143.00	Newport
10LWF-950-B Longpass Filter, Dielectric, 25.4 mm, 950 ± 7 nm Cut-On, 970 - 1200 nm $143.00 In Stock	10LWF-950-B Longpass Filter, Dielectric, 25.4 mm, 950 ± 7 nm Cut-On, 970 - 1200 nm	12.0	950 nm	± 7 nm	970 - 1200 nm	In Stock	$143.00	Newport
10LWF-1000-B Longpass Filter, Dielectric, 25.4 mm, 1000±7 nm Cut-On, 1020 - 2200 nm $143.00 6 Weeks	10LWF-1000-B Longpass Filter, Dielectric, 25.4 mm, 1000±7 nm Cut-On, 1020 - 2200 nm	13.0	1000 nm	± 7 nm	1020 - 2200 nm	6 Weeks	$143.00	Newport

Showing 1 to 13 of 13 entries

Previous1Next

Specifications

Type

Dielectric Longpass Filter
Optic Size

Ø25.4 mm
Angle of Incidence

0°
Surface Quality

80-50 scratch-dig

Size Tolerance

+0/-0.5 mm
Temperature Range

-50 to 100°C
Wavelength Shift with Temperature

0.025 nm/°C
Humidity Resistance

Per MIL-STD-810E, Method 507.3, Procedure III Modified to 7 cycles

Features

Superior Isolation Between Stopband and Passband

Our long wave pass filters feature both high transmission within the passband, and high rejection within the stop band, as well as a rapid transition, resulting in superior spectral isolation of a desired wavelength range. Out-of-band rejection for our longpass filters is OD≥3 and the stopband spans from X-ray to the edge wavelength. Typical transmission is ≥80% for our long-pass filters.

Angular Sensitivity and Fine Wavelength Tuning

Unlike colored glass filters, the filter edge wavelength for thin film filters will shift to shorter wavelengths with increased AOI. This can be useful for tilt tuning these shortpass filters to your exact wavelength. The shift may be calculated by: λ_θ = λ_o [1-(n_o/n_e)² sin²θ]^1/2 where λ_θ is the wavelength at the new angle of incidence; λ_o is the center wavelength; n_o is the index of refraction of the environment (n_o = 1 in air); n_e is the effective index of refraction of the filter; and θ is the angle of incidence. This property can be beneficial as the filters may be intentionally tilted to either stop or allow transmission of light from lasers or light sources near the edge wavelength. Our visible and IR filters have a particularly high n_e, allowing more precise wavelength tuning.

400 to 1000 nm Cut-On Wavelengths

Our longpass optical filters are available in a wide range of cut-on wavelengths, ranging from 400 to 1000 nm. A custom bandpass filter with excellent performance can be constructed using a combination of a shortpass and a longpass filter. These filters are available individually and in sets. The longpass filter set consists of one filter for each available edge wavelength. They are shipped in a hardwood box for convenient storage and protection.