Telecentric F-Theta Lens vs Standard F-Theta Lens
Telecentric F-Theta Lens vs Standard F-Theta Lens: Engineering Differences and Selection A telecentric F-theta lens vs standard F-theta lens comparison is mainly a question of…
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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
F-Theta Distortion vs Field Curvature in Scan Lenses
F-theta distortion and field curvature are both field-dependent errors in a laser scan lens, but they fail in completely different ways. F-theta distortion is a…
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F-Theta Scan Field Size Calculation
Engineers usually reach the question of how to calculate F-theta scan field size at one of two moments: when a marking field has to cover…
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Thermal Lensing in Germanium Optics
Thermal lensing in germanium optics is the change in optical power that occurs when absorbed radiation heats a germanium element non-uniformly, creating a radial temperature…
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F-Theta Lens Spot Size vs Beam Diameter
In an f-theta scanning system, spot size and input beam diameter are inversely related: double the collimated beam diameter at the lens, and the focused…
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Laser Line Filter vs Laser Cleanup Filter
In most catalogs, "laser line filter" and "laser cleanup filter" describe the same physical object: a narrow dielectric bandpass filter centered on a laser wavelength.…
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1064nm vs 532nm F-Theta Scan Lens
A 1064nm vs 532nm F-theta scan lens comparison starts with a simple rule: the scan lens must be designed for the laser wavelength used by…
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Germanium vs ZnSe Infrared Window
Choose a germanium infrared window when you need a rugged, visible-blocking aperture for an 8 to 14 µm thermal imager that stays below roughly 100…
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Choosing Fluorescence Filters
Treat the three components as one optical system. To choose excitation, emission, and dichroic filters for fluorescence, start from the fluorophore's absorption and emission spectra,…
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How Stokes Shift Affects Fluorescence Filter Selection
The Stokes shift of a fluorophore is the spectral gap you have to work with, and that gap sets every meaningful parameter in the filter…
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Fluorescence Filter Set Design Basics
A fluorescence filter set is three components engineered as one spectral system: an excitation filter (exciter) that cleans up the illumination, a dichroic beamsplitter that…
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Aspheric Lens vs Spherical Lens
The central difference in an aspheric lens vs spherical lens comparison is surface geometry. A spherical surface has a constant radius of curvature, while an…
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