Narrowband interference filter

Narrowband interference filter

Supplier
Zeit-group
Category
Optical Filters
Origin
China

A narrowband interference filter is a bandpass filter that selects specific wavelengths using interference in dielectric and metallic multilayer coatings.

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Overview

A narrowband interference filter is a bandpass filter that selects specific wavelengths using interference in dielectric and metallic multilayer coatings. Its full width at half maximum ranges from 1nm to 40nm. It can replace expensive dispersive components such as gratings in optical experiments and industrial applications. Three types are available: laser-line, spectral-line, and visible/near-infrared filters. Laser-line filters target a specific laser wavelength with FWHM values of 1, 3 or 10 nm. Spectral-line filters target an element's spectral line with 10 nm FWHM. Visible/near-infrared filters cover 300–1000nm at 50 nm center-wavelength intervals, with 10 or 40nm FWHM.

Specifications

ParameterValue
MaterialAs Required
Optical CoatingElectrolytic Multilayer Coating, Metal Coating
Clear Aperture95%
Parallelism≤30 arcsec
Surface Quality60-40
Dimensional Tolerance - Full Width at Half Maximum [Full Width at Half Maximum 1nm]±0.2nm
Dimensional Tolerance - Center Wavelength [Full Width at Half Maximum 1nm]+0.2 nm,−0nm
Dimensional Tolerance - Full Width at Half Maximum [Full Width at Half Maximum 3nm]±0.5nm
Dimensional Tolerance - Center Wavelength [Full Width at Half Maximum 3nm]+0.5 nm,−0nm
Dimensional Tolerance - Full Width at Half Maximum [Full Width at Half Maximum 10nm]±2.0nm
Dimensional Tolerance - Center Wavelength [Full Width at Half Maximum 10nm]+3 nm,−0nm
Dimensional Tolerance - Full Width at Half Maximum [Full Width at Half Maximum 40nm]±8.0nm
Dimensional Tolerance - Center Wavelength [Full Width at Half Maximum 40nm]+10 nm,−0nm

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Supplier Information

Ze
Zeit-group
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Chengdu Zhongke Zhuoer Intelligent Technology Group Co., Ltd. is a leading enterprise in the field of optics and semiconductors, recognized as a National High-Tech Enterprise, a Sichuan Province “Specialized, Refined, Distinctive, and Innovative” “Little Giant” Enterprise, a Chengdu New Economy “Double Hundred” Enterprise, and a Chengdu High-Tech Zone “Four Categories of High-Level Talent” Enterprise. Leveraging its exceptional technical capabilities—including independent R&D, patented technologies, and technological innovation—the company has achieved breakthroughs in ultra-precision polishing, precision inspection, and coating processes in the chip and display sectors. Its key products include high-end quartz blank masks, precision optical components and active devices, precision inspection equipment, and high-performance coating technology services, establishing the company as a core technology-driven enterprise with a competitive supply chain advantage in replacing imported products with domestically produced alternatives. To date, the company has been granted over 80 patents and collaborates with five affiliated institutions and scientific research units. It has established a precision optical processing production base and a precision optical system assembly and calibration center. The company has forged deep industry-academia-research partnerships with global research institutes, renowned universities, and industry associations in the optoelectronics field. Grounded in high-level scientific and technological self-reliance, it is committed to conquering key core technologies, continuously accumulating technical expertise, and tackling key process challenges, striving to become a leading enterprise in the development and industrialization of high-tech optoelectronic products. Through continuous efforts, Zhongke Zhuoer has achieved one qualitative leap after another. In the future, the company will deepen collaborative partnerships along the industry value chain to enhance its core capabilities, embrace innovation, and contribute to the development of critical upstream materials and integrated process technologies for China’s optoelectronics industry.

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Zeit-group · Optical Filters
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