Longpass

Author: b | 2025-04-23

AT – UV/DAPI Longpass: AT - Aqua Longpass: AT - GFP/FITC Longpass: AT - TRITC/Cy3 Longpass: AT - Texas Red Longpass: AT - Auramine Longpass: AT - FM 1-43/Chlorophyll Longpass: AT – Coumarin/Pacific Blue Longpass: AT - FluoroGold/Calcofluor White Longpass: LRGB: HaLRGB: AT UV/DAPI Longpass: AT - Aqua Longpass: AT - GFP/FITC Longpass: AT - TRITC/Cy3 Longpass: AT - Texas Red Longpass: AT - Auramine Longpass: AT - FM 1-43/Chlorophyll Longpass: AT Coumarin/Pacific Blue Longpass: AT - FluoroGold/Calcofluor White Longpass: LRGB: HaLRGB:

(a) SEM image of fabricated metamaterial longpass filter. (b) Longpass

General SpecificationsMaterialSchott® Colored GlassDiameter25 mmClear Aperture80% of DiameterThickness2 mmThickness Tolerance+0.0 mm/-0.4 mmSurface Quality40-20 Scratch-DigSurface FlatnessParallelismFeaturesLongpass Cut-On Wavelengths from 280 to 1000 nmØ25 mm FiltersTransmissive Up to At Least 1800 nmSM1-Threaded Mounts, Engraved with Item # and DescriptionKit Includes Selected Longpass and Bandpass FiltersThorlabs' Mounted Longpass Colored Glass Filters are manufactured from different colors of Schott® glass and are intended for use in a wide variety of applications. The SM1-mounted (1.035"-40), Ø25 mm filters will thread into our manual or motorized filter wheels or any of our lens tube accessories. The housing is engraved with the Item # and longpass cut-on wavelength for easy identification. If the longpass filter you require is not listed here, it may be available in an unmounted version.Several of the colored glasses used for our filters are fluorescent at certain wavelengths; please consider our fluorescence imaging filters if your application is sensitive to fluorescent signals. For narrowband sources, we recommend our dielectric edgepass filters.Colored Glass Filter KitThorlabs offers a boxed filter kit containing a selection of our most popular bandpass and longpass filters. For the specific filters included in the kit, please see the presentation at the bottom of this webpage.Storage BoxIf you need a safe, convenient place to store loose filters, consider our KT01 Storage Box, a lockable foam case that holds up to ten filters. Please see below for more information. Colored Glass Replacement Longpass Filters Dielectric Coated Longpass Filters>90% Typical Transmission and >OD5 Blocking100% Environmentally Safe, RoHS Compliant ConstructionCut-On Wavelengths from 320 to 1000nm C-Mount Longpass Glass Color Filters New New Launched on our website before appearing in our latest print catalogs. Be the first to buy before anyone else! Pre-Mounted in Engraved C-Mount HousingsSimplify Integration into Optical SystemsSCHOTT or Hoya Color Glass Filters AvailableAlso Available Unmounted 45° Reflective Dichroic Color Filters TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More Reflects Stated Color While Transmitting Remaining Visible SpectrumIdeal for Color Separation ApplicationsPrecision N-BK7 Substrates Everix Ultra-Thin Longpass Filters Clearance Clearance Availability is limited, so buy before these products disappear. Sorry, we cannot accept returns. Receive up to 80% off select products. Ultra-Thin, Flexible SubstrateSharp Cut-On Wavelength DesignsExtruded Thin Film, Insensitive to Scratches Everix Ultra-Thin Shortpass Filters Clearance Clearance Availability is limited, so buy before these products disappear. Sorry, we cannot accept returns. Receive up to 80% off select products. Flexible Design to Conform to Curved SurfacesScratch Insensitive, Ultra-thin Polymer Construction>80% Average Transmission Optical Cast Plastic Color Filters Resistant to All Types of Chemicals and Solvents (Acetone, Acids, Alkali and Alcohols)Excellent Thermal ResistanceEasily Drilled with High Speed Carbide Bits for Mounting C-Mounted Filters TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More Hot or Cold Mirror and Color Dichroic Options Available4 Standard Female C-Mount Threaded Holes

Infrared Longpass Filters – IR Longpass Filters - Edmund Optics

The Nikon G-2A filter set is designed as the standard combination for use with green excitation wavelengths, and employs a wide (50-nanometer) excitation passband that covers essentially the entire green spectral region, from 510 to 560 nanometers. Ultraviolet, visible, and near-infrared transmission spectral profiles for this filter combination are illustrated below in Figure 1. Combined with the 590-nanometer cut-on wavelength of the longpass emission filter, the G-2A set enables detection of a wide range of fluorochromes emitting at wavelengths longer than those in the yellow region and extending into the near-infrared spectral zone. The dichromatic mirror has a cut-on wavelength specification of 565 nanometers. Figure 1 - G-2A (Wide Band Excitation) Green Excitation Filter Block G-2A SpecificationsExcitation Filter Wavelengths: 510-560 nanometers (bandpass, 535 CWL)Dichromatic Mirror Cut-on Wavelength: 565 nanometers (longpass, LP)Barrier Filter Wavelengths: 590 nanometer cut-on (longpass, LP) The G-2A filter combination is designed to perform with a wide range of fluorochromes excited by green wavelengths, and is considered the standard Nikon filter block for green excitation. The combination of a wide excitation passband (50 nanometers) with a longpass emission (barrier) filter enables detection of fluorescence intensity from a substantial range of fluorophores that emit in the orange through near-infrared spectral regions (restricted to wavelengths longer than the 590-nanometer barrier filter cut-on wavelength). The resulting images are bright, although signal-to-noise ratios are typically lower than those produced with combinations employing bandpass barrier filters (such as the G-2E/C and Cy3). The G-2A set is recommended when studying the following fluorophores: Acridine Red, Alexa Fluors (532, 546, 555, 568, and 594), Alizarin Red, BODIPY probes, Calcium Orange, Cy3, Cy3.1.8, ethidium bromide, FluoroRuby, FM 5-95, hexachlorofluorescein (HEX), LDS 751-DNA, MitoTracker Orange and Red, POPO-3, PO-PRO-3, propidium iodide (PI), Pyronin B, RedoxSensor Red CC-1, RH probes (237, 414, 421, 795), many rhodamine derivatives, Sevron Brilliant Red, SYTO derivatives, SYTOX Orange, and Xylene Orange. The images presented in Figure 2 demonstrate the performance of this filter combination with a variety of green-absorbing fluorescence probes targeted at different intracellular locations. Figure 2 - Nikon G-2A Green Excitation Longpass Filter Set Illustrated in Figure 2(a) is the. AT – UV/DAPI Longpass: AT - Aqua Longpass: AT - GFP/FITC Longpass: AT - TRITC/Cy3 Longpass: AT - Texas Red Longpass: AT - Auramine Longpass: AT - FM 1-43/Chlorophyll Longpass: AT – Coumarin/Pacific Blue Longpass: AT - FluoroGold/Calcofluor White Longpass: LRGB: HaLRGB:

Infrared Longpass Filters IR Longpass Filters - Edmund Optics

Skip to content Longpass Filter Home » Shop » Longpass Filter Longpass Filter Z-optics’ long pass filters are expertly designed to transmit light with wavelengths longer than a specified cut-on point, effectively blocking shorter wavelengths. These filters are crucial for applications that require the isolation of longer wavelengths for precise spectral analysis and imaging.Key Features:Defined Cut-On Wavelengths: The Z-optics long pass filters offer a range of cut-on wavelengths starting from 380 nm up to 1100 nm, ensuring a suitable filter for various applications.High Transmission Efficiency: With an average transmission of 85%, these filters guarantee that a significant portion of the desired light is transmitted, enhancing system performance.Robust Blocking Performance: The filters provide strong blocking, with an optical density of 2, to ensure that shorter wavelengths are effectively suppressed.Broad Transmission Range: The transmission range of these filters extends from 320 nm to 1200 nm, depending on the specific model, allowing for flexible use in different optical setups.Applications:Z-optics long pass filters are used in a multitude of industries, including:Biomedical Imaging: In applications such as fluorescence microscopy, these filters allow for the precise capture of longer wavelengths while blocking unwanted shorter wavelengths.Analytical Instrumentation: For instruments that require the separation of spectral components, such as spectrometers, Z-optics long pass filters provide the necessary wavelength isolation.Environmental Sensing: These filters are essential in detecting and measuring specific environmental parameters by isolating the relevant spectral data.Quality Control: In industrial settings, long pass filters are used to ensure the accuracy of color measurements and material analysis by filtering out shorter wavelengths.Z-optics is dedicated to providing optical solutions that meet the specific needs of their customers, with a commitment to quality and performance in the field of long pass filters. Longpass Filter Longpass FilterLongpass FilterPart NumberCut-On wavelength (nm)Transmission Wavelength (nm) Avg Transmission (%)Blocking Wavelength (nm)OpticalDensityFIL2400-85-2400420-120085200-3752FIL2425-85-2425445-120085200-4052FIL2450-85-2450470-120085200-4302FIL2475-85-2475495-120085200-4552FIL2500-85-2500520-120085200-4802FIL2525-85-2525545-120085200-5052FIL2550-85-2550575-120085200-5302FIL2575-85-2575600-120085200-5502FIL2600-85-2600625-120085200-5702FIL2625-85-2625650-120085200-5952FIL2650-85-2650675-120085200-6202FIL2675-85-2675700-120085200-6452FIL2700-85-2700725-120085200-6702FIL2725-85-2725750-120085200-6952FIL2750-85-2750775-120085200-7202FIL2775-85-2775800-120085200-7452FIL2800-85-2800825-120085400-7702FIL2825-85-2825850-120085400-7952FIL2850-85-2850875-120085400-8202FIL2875-85-2875900-120085400-8452FIL2900-85-2900930-120085400-8702FIL2925-85-2925955-120085400-8952FIL2950-85-2950980-120085400-9102FIL2975-85-29751010-180085400-9352FIL21000-85-210001040-180085400-9602FIL21025-85-210251070-180085400-9852FIL21050-85-210501100-180085400-10102FIL21075-85-210751130-180085400-10352FIL21100-85-211001160-180085400-10602 You may also like… Ultraviolet and visible transmission spectral profiles for the Nikon longpass emission UV-1A filter combination are illustrated below in Figure 1. This set, intended for applications using a mercury arc-discharge lamp, is designed to significantly reduce specimen autofluorescence and photobleaching by incorporating a very narrow bandwidth (10-nanometer) ultraviolet excitation cross section with a 40-nanometer gap between the dichromatic mirror and longpass emission filter. Figure 1 - UV-1A (Narrow Band Ultraviolet Excitation) Ultraviolet Excitation Filter Block UV-1A SpecificationsExcitation Filter Wavelengths: 360-370 nanometers (bandpass, 365 CWL)Dichromatic Mirror Cut-on Wavelength: 380 nanometers (longpass, LP)Barrier Filter Wavelengths: 420 nanometer cut-on (longpass, LP) The UV-1A fluorescence filter combination is designed to minimize autofluorescence partially by utilizing only the i-line region of the mercury ultraviolet emission spectrum (centered at 365 nanometers). Consequently, this filter combination is recommended primarily for microscopes equipped with a mercury arc-discharge lamp. The longpass emission (barrier) filter used in the UV-1A combination is designed to collect signals at wavelengths exceeding 420 nanometers, enabling visualization of red, orange, yellow, green, and blue emission from fluorophores excited in the ultraviolet. The UV-1A filter combination is recommended when studying the following fluorophores: 7-amino-4-methylcoumarin-3-acetic acid (AMCA), anthroyl stearate, bisbenzamide, Calcein Blue, Cascade Blue, 4',6-diamidino-2-phenylindole (DAPI), FluoroGold, and Hoechst 33342/33258, among many others. The images presented in Figure 2 demonstrate the performance of this filter combination with a variety of ultraviolet absorbing fluorescence probes targeted at different intracellular locations. Figure 2 - Nikon UV-1A Narrow Bank Excitation Longpass Filter Set Illustrated in Figure 2(a) is the fluorescence emission intensity from a thin section of mouse intestine stained with Alexa Fluor 350 wheat germ agglutinin, a blue fluorescent lectin that is specific to the mucus of goblet cells. The ultraviolet absorption maximum of Alexa Fluor 350 is 346 nanometers and the emission maximum is 442 nanometers. In addition, the specimen was simultaneously stained with Alexa Fluor 568 phalloidin (filamentous actin) and SYTOX Green (nuclei). Note the presence of spectral bleed-through from the red and green fluorophores.Figure 2(b) shows emission intensity from a culture of Indian Muntjac deerskin fibroblast cells stained with Alexa Fluor 350 phalloidin, which targets actin, while Figures 2(d) and 2(e) present bovine pulmonary artery cultured cells and a mouse kidney thin section, respectively, both having the nuclei stained with DAPI.Figure 2(c) illustrates culture of Indian Muntjac deerskin fibroblasts stained with Hoechst 33258, which specifically binds to DNA and stains the nuclei. The ultraviolet absorption maximum of Hoechst 33258 is 346 nanometers and the emission maximum is centered at 460 nanometers. Autofluorescence in plant tissues (fern sporangium) is represented in Figure 2(f) and demonstrates the wide emission spectrum of endogenous fluorophores in these specimens. Note that images captured with the UV-1A filter combination have less contrast than images from the UV-2E/C set and less emission intensity than related combinations in the UV-2A and UV-2B filter blocks. Additional Specimen Images with the UV-1A Filter Combination Mouse Intestine Thin Section Fluorescence emission intensity from a thin section of mouse intestine stained with Alexa Fluor 350 wheat germ agglutinin, a

The Optical Basics of Longpass and

The fibres allows them to be located and lifted from the surface for further examination.Fig 2.This is a representation of how a longpass filter allows us to see fluorescence. The illumination wavelengths from the Blue Crime-lite are blocked out by the filter, allowing only the fluorescence emitted from the sample to be viewed.Bandpass Filters:Some substrates may contain a background which fluoresces at a similar wavelength to the evidence. This fluorescent background may interfere with the ability to see contrast between the evidence and the background, in some cases it may completely obscure the visibility of the fluorescent signal. In these situations, it may be better to use a bandpass filter for the examination.Fig 3.This is a representation of a bandpass filter. Bandpass filters block out all light shorter than a specific wavelength and also all light longer than a specific wavelength.A bandpass filter will block all wavelengths shorter than a certain value but also all wavelengths longer than a certain value as well, allowing only a narrow portion of the spectrum to pass through. This can help to improve contrast between the evidence and background, especially if a fluorescent background is interfering with the signal. This can be seen in the example images in Fig 4.In some cases, the use of a bandpass filter may give visibility to evidence which was previously not visible with the use of a standard longpass filter, in other cases it may simply increase the contrast which can be achieved between the evidence and the background – potentially allowing the morphology of a stain to be more clearly visible.abcFig 4.This is an example of a semen stain on a brightly patterned pair of male underwear. Photographed a. using white light, b. using a blue Crime-lite and a 495nm longpass filter, and c. using a blue

What is a Longpass Filter? - SyronOptics

Specifications General Transmission at cut-on wavelength is 5% of peak transmission. Physical & Mechanical Properties Thickness Tolerance (mm): ±0.2 Optical Properties Optical Density OD (Average): ≥3.0 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Germanium (Ge) Transmission Wavelength (nm): 2520 - 4800 Transmission Wavelength (μm): 2.52 - 4.80 Blocking Wavelength Range (nm): 200 - 2400 Environmental & Durability Factors Operating Temperature (°C): -62 to +71 Regulatory Compliance Certificate of Conformance: Product Details Coated on Silicon or Germanium SubstratesIdeal for Isolating Broad Spectral RegionsDurable, First-Surface Coatings Infrared (IR) Longpass Filters provide a sharp cut-off below a particular wavelength. Often used for order sorting, they isolate broad regions of the spectrum, simultaneously providing high transmission of desired energy, and deep rejection of unwanted energy. These filters are constructed of hard, durable first-surface dielectric coatings on optical-quality IR-transmitting substrates. Infrared (IR) Longpass Filters are able to withstand normal cleaning and handling associated with any high-quality optical component because of their make-up. These filters are particularly useful for FTIR spectroscopy and Thermal Imaging Applications. For custom sizes and coating requirements, please contact our Sales Department. Frequently Purchased Together. AT – UV/DAPI Longpass: AT - Aqua Longpass: AT - GFP/FITC Longpass: AT - TRITC/Cy3 Longpass: AT - Texas Red Longpass: AT - Auramine Longpass: AT - FM 1-43/Chlorophyll Longpass: AT – Coumarin/Pacific Blue Longpass: AT - FluoroGold/Calcofluor White Longpass: LRGB: HaLRGB: AT UV/DAPI Longpass: AT - Aqua Longpass: AT - GFP/FITC Longpass: AT - TRITC/Cy3 Longpass: AT - Texas Red Longpass: AT - Auramine Longpass: AT - FM 1-43/Chlorophyll Longpass: AT Coumarin/Pacific Blue Longpass: AT - FluoroGold/Calcofluor White Longpass: LRGB: HaLRGB:

What is an Optical Longpass Filter?

The electromagnetic spectrum spans an extensive range of wavelengths, including Gamma rays, X-Rays, ultraviolet, visible light, infrared, and radio waves. These are arranged in order from shorter to longer wavelengths.Despite this broad spectrum, the human eye can only detect visible light between 380 and 780nm in wavelength. These variations in wavelength allow visible light to appear as an array of distinct colors to the human eye.Visible Spectrum. Image Credit: Avantier Inc.Exploring the Diversity of Optical Filters in Design and ManufacturingIn the field of optics, an optical filter catches the eye as one of the most commonly used components in design and manufacturing. The selective transmission of distinct wavelengths and ensuring unwanted light is blocked out is achieved through optical filters. These filters are available in a wide range of designs and include the following:Longpass filters: Designed to transmit wavelengths above a specific value, longpass filters allow longer wavelengths to pass through while exclusively blocking shorter ones. Notably, these filters demonstrate a sharp cut-on, approaching zero transmission gradually in the blocking range and nearing 100% transmission in the passband.Longpass Filter. Image Credit: Avantier Inc.Shortpass filters: In contrast to longpass filters, shortpass filters permit the passage of shorter wavelengths while exclusively impeding the longer ones. They also exhibit a sudden cut-off while gradually nearing zero transmission from the high transmission end.Shortpass Filter. Image Credit: Avantier Inc.Bandpass filters: These filters can be seen as a combination of longpass and shortpass filters. These filters demonstrate high transmission within a given wavelength range while blocking all other wavelengths.Bandpass filter. Image Credit: Avantier Inc.Multi-bandpass filters: These filters can be classed as a duplication of bandpass filters, which have high transmission across several wavelength regions.Multi-bandpass Filter. Image Credit: Avantier Inc.Notch filters: Alternatively known as band stop filters, notch filters prevent light from passing through a designated wavelength range while allowing light to be transmitted on either side of that range. Notably, on a wavelength transmission chart, the shape resembles a V.Notch Filter. Image Credit: Avantier Inc.Neutral density (ND) filters: Designed to diminish the intensity of all wavelengths across the spectrum, ND filters preserve color integrity. Notably, ND filters find common applications in photography. Once attached to the front of the lens, an ND filter offers photographers precision control over the light that reaches the sensor. This allows photographers to fine-tune and adjust several specifications to prevent overexposure and produce superior photo results.Neutral Density Filter. Image Credit: Avantier