A longpass filter is an optical filter that passes only wavelengths above a certain cutoff wavelength and blocks shorter wavelengths.

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Typically made of glass or plastic, optical filters are an integral part of many applications. Be it polarizing filters for life science applications or bandpass filters for biomedical applications, understanding the characteristics of the filters is essential: Dichroic filters, also known as interference filters, reflect unwanted wavelengths and transmit desired wavelengths, while absorptive filters absorb specific wavelengths.

Signal filter

A shortpass filter is an optical filter that passes only wavelengths below a certain cutoff wavelength and blocks longer wavelengths.

Optical filters improve the performance and accuracy of optical systems by selectively transmitting, reflecting or blocking specific wavelengths or ranges of wavelengths. The filters are critical components in several high-precision applications, including machine vision, spectroscopy, and medical imaging such as fluorescence microscopy.

A color filter is an optical absorption filter that absorbs certain colors of light, allowing only selected colors to pass.

Acousto-optic tunable filter

ND filter

Our optical filters for the industry are used in a wide range of markets and applications, from manufacturing to medical, logistics, inspection and aerospace. If you would like to learn more about the wide range of our optical filters, please visit the following pages to find out, for example, how the filters can impact on production processes or entire logistics chains.

Optical filters feature materials and coatings with specific transmission and reflection properties. These materials are designed to either transmit certain wavelengths while blocking others or reflect certain wavelengths while transmitting the rest. The design of these filters is based on the principles of interference and absorption, which determine how different wavelengths interact with the filter material.

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A neutral density filter, or gray filter, is an optical filter that uniformly reduces the intensity of light without affecting image quality.

IR filter

A bandpass filter is an optical filter that blocks certain wavelengths or ranges of colors from incident light, allowing only certain ranges of the optical spectrum to pass.

A narrowband filter is an interference filter that filters out only a very narrow spectrum of wavelengths from incident light, blocking the rest of the optical spectrum.

At Schneider-Kreuznach, we design and manufacture both the mechanics and the coating of our high-quality optical filters. This enables us to produce customized optical filters that meet your exact requirements and guarantee the highest quality standards.

Optical filters are precision devices designed to selectively transmit or block specific wavelengths of light. They improve the performance of optical systems by allowing only desired wavelengths to pass while blocking unwanted light. This selective transmission is essential in a wide variety of scientific, medical, and industrial applications.

Schneider-Kreuznach is a leading manufacturer of optical filters for industrial applications. As the manufacturer of B+W filters, renowned among photographers worldwide, we bring decades of expertise in filter technology to a wide range of industries. Our filters are trusted for their precision, durability and performance in critical applications where optical clarity and reliability are essential. Whether you need standard filters or custom solutions tailored to your specific needs, Schneider-Kreuznach ensures high-quality optical filters that meet your requirements.

Optical filters require careful handling to avoid damaging their delicate surfaces. Begin by using a soft air blower to remove loose dust and debris. Next, apply a small amount of lens cleaning solution to a lint-free cloth or lens tissue. Gently wipe the filter surface in a circular motion, starting from the center and moving outward. Avoid using excessive force or abrasive materials that may scratch or damage the filter coating.

A UV-blocking filter is an optical filter that blocks ultraviolet light and passes only visible light to reduce unwanted UV radiation, while an IR-blocking filter blocks infrared light and passes only visible light to minimize unwanted infrared radiation, improving image quality in optical applications such as cameras or optical sensors.

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Optical filters improve the performance and accuracy of optical systems in many different applications. In fluorescence microscopy optical filters isolate specific fluorescent signals, in spectroscopy optical filters analyze the spectral properties of substances, in medical imaging optical filters improve image contrast and clarity, and in machine vision systems optical filters leverage quality control and inspection processes.

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•    Reproducibility and Reliability: Rely on the consistent performance of our filters for precise results, even after years. •    Optical precision: Highest flatness and minimal wavefront deformation guarantee images without loss of quality. •    Wide selection: Choose from a variety of filter types and coatings to meet your specific needs. •    Flexible sizes: Our filters are available in a variety of diameters to suit your applications. •    Robust Mechanics: Rely on metal mounts for a durable and reliable filtration solution. •    Highest reproducibility, reliability and excellent image quality.

A polarizing filter is an optical filter that selectively blocks or passes light waves based on their plane of vibration, allowing only light with a specific polarization direction to pass while other polarization directions are blocked.