Germanium vs Silicon Infrared Optics
Germanium vs silicon infrared optics is not a question of which material is universally better. The first decision is the operating wavelength. Silicon is particularly…
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Applications
Here are the previous GIAI-related industry application solutions. Here we share GIAI’s various optical filters, lenses, prisms and other optical components for application accessories analysis in various fields, covering a variety of industry application solutions!
How Polarization Affects Optical Filter Spectra at Oblique Incidence
Polarization can change the measured transmission or reflection spectrum of an optical interference filter, especially when the filter operates at a non-normal angle of incidence.…
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Interference Filter vs Colored Glass Filter
When an optical system needs to transmit one wavelength range and suppress another, both interference filters and colored glass filters may appear to solve the…
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How Aspheric Lenses Reduce Spherical Aberration
An aspheric lens reduces spherical aberration by changing its surface slope across the clear aperture, so that each annular zone refracts light by exactly the…
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What Makes a Narrowband Filter Expensive? Key Cost Drivers
Two narrowband filters may both be described as “850 nm bandpass filters” or “1064 nm narrowband filters,” yet their manufacturing cost can differ substantially. The…
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Metallic Mirror vs Dielectric Mirror: How to Choose
The choice between a metallic mirror and a dielectric mirror comes down to one trade: bandwidth versus reflectance. A metallic mirror reflects moderately well (roughly…
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IBS vs IAD Optical Coating: How to Choose the Process
The difference between IBS vs IAD optical coating comes down to how much kinetic energy the film-forming atoms carry when they land, and what that…
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Ambient Light Rejection Filter for ToF Sensors: A Guide
An ambient light rejection filter for a time-of-flight sensor is a narrow bandpass interference filter placed in the receive path that transmits the illuminator wavelength,…
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ZnSe vs ZnS Infrared Optics
Choose zinc selenide (ZnSe) when the optic sits in a CO2 laser beam or has to transmit past about 14 µm. Choose zinc sulfide (ZnS)…
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How to Specify OD Blocking Range for a Bandpass Filter
To specify the OD blocking range for a bandpass filter you need two independent numbers, not one: the depth of rejection, given as optical density…
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Raman Edge Filter vs Notch Filter: How to Choose
Choose a Raman edge filter when you only need Stokes signal and you want to measure as close to the laser line as physically possible.…
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Bandpass vs Longpass Filter for Machine Vision
Choosing a bandpass vs longpass filter for machine vision is fundamentally a question of which wavelengths the camera should receive—and which wavelengths must be rejected.…
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