Ultra Narrow Bandpass Filter Applications: Engineering Guide
An ultra narrow bandpass filter is used when an optical system needs to transmit a tightly defined wavelength region while strongly attenuating light outside that…
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Optical Engineering
Here we provide articles about popular science and applications of filters, lenses, prisms, reflectors, ND mirrors and other optical components. You are welcome to read! optical engineering articles, optical engineering guides, optical components, optical design, optics technology, photonics engineering
Protected Aluminum vs Enhanced Aluminum Mirror Coatings
Protected aluminum and enhanced aluminum start from the same vacuum-deposited aluminum film. The difference is what goes on top: protected aluminum adds a single dielectric…
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Narrow Bandpass Filter Manufacturer: How to Specify
Choosing a narrow bandpass filter manufacturer comes down to three questions: can their coating process hold your center wavelength tolerance across the full clear aperture,…
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ZnSe Lens Manufacturer: Grades, Tolerances & Coatings
Choosing a ZnSe lens manufacturer comes down to three things you can actually verify: the grade and traceability of the chemical vapor deposition (CVD) zinc…
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Custom Optics Manufacturer in China: Engineering Evaluation Guide
Searching for a custom optics manufacturer in China usually means the optical function is already known, a drawing exists, or a prototype needs to be…
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Aspheric Lens vs Achromatic Lens: How to Choose
An aspheric lens corrects spherical aberration in a single element. An achromatic lens corrects chromatic aberration by combining two glasses with opposing dispersion. The aspheric…
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V-Coat vs Broadband AR Coating: Specs and Trade-Offs
Use a V-coat when the optic sees one laser line and you need the last fraction of a percent of transmission. Use a broadband anti-reflection…
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Flat-Top vs Gaussian Bandpass Filter: How to Choose
A flat-top bandpass filter holds near-peak transmission across the whole passband and then drops steeply at both edges. A Gaussian bandpass filter reaches maximum transmission…
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OD4 vs OD6 Optical Filter Blocking: Key Differences
The practical difference between OD4 vs OD6 optical filter blocking is a factor of 100 in transmitted unwanted light. OD4 permits a maximum transmittance of…
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How to Choose an Optical Filter for Machine Vision
To choose an optical filter for machine vision, start from the illumination spectrum rather than the filter catalog. Match the filter passband to the light…
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905 nm vs 1550 nm LiDAR Optical Filters
Choosing between 905 nm vs 1550 nm LiDAR optical filters is not simply a matter of moving the center wavelength of the same bandpass filter.…
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1550nm Narrow Bandpass Filter for LiDAR
1550 nm Narrow Bandpass Filter for LiDAR: How to Specify the Receiver Filter A 1550 nm narrow bandpass filter for LiDAR (Light Detection and Ranging)…
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