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Band Pass Linear Variable Filter

Name: Band Pass Linear Variable Filter
Brand: ECOPTIK INDUSTRIAL PTE.LTD.

Linear Variable Bandpass Filter achieves its characteristics by depositing a layer of interference film with continuously varying thickness on a wedge-shaped substrate or a specially coated flat substrate. Light waves interfere in film layers of different thicknesses, with only specific wavelengths of light meeting the conditions for constructive interference and passing through, while other wavelengths of light are reflected or attenuated due to destructive interference. The thickness of the film layer increases linearly along one direction of the filter, resulting in a linear change in the center wavelength.

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Specification of Band Pass Linear Variable Filter

Range of wavelength	400-1000nm
CWL	1.5%
Peak transmittance	≥60%
Depth of cut off	OD3
Wavelength of cut off	300-1100nm
Linear rate of variable	50nm/mm
Dimension	32mm×13mm
Effective size of variable area	11.3mm×11.3mm

Application of Band Pass Linear Variable Filter

Spectrometers and monochromators: can be used to construct miniaturized, low-cost spectrometers or as wavelength selective components, replacing or supplementing the role of gratings.
Fluorescence detection and microscopy: In fluorescence systems, it can be used to select excitation light of specific wavelengths or to detect emitted light, especially suitable for scenarios that require rapid switching or multi wavelength excitation.
Machine Vision and Sorting: Plays a role in color recognition, material sorting, quality inspection, and other aspects of industrial production lines.
Environmental remote sensing and monitoring: can be used in satellite or airborne remote sensing equipment to perform spectral analysis on different land features.
Laser and optical communication: used for laser wavelength tuning, noise suppression, or dynamic selection of optical channels.

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Band Pass Linear Variable Filter

Specification of Band Pass Linear Variable Filter

Application of ﻿Band Pass Linear Variable Filter

Application of Band Pass Linear Variable Filter