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Metallic vs. Dielectric Mirror Coatings: Which Should You Choose?

A mirror's substrate just holds its shape — the coating is what actually reflects the light, and it's the single biggest factor in how well a mirror performs. Metallic and dielectric coatings solve the same problem in very different ways, and the tradeoffs between them decide which one belongs in your system. Key Comparison Property Metallic Coating Dielectric Coating Structure Single thin...

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Optical Mirror Buying Guide: Flat, Concave & Convex Mirrors

An optical mirror reflects light using a coated surface rather than refraction, which makes it useful anywhere a lens's chromatic aberration or transmission loss would get in the way. Choosing the right one comes down to two decisions: what surface shape you need, and what coating will reflect your wavelength efficiently. Key Specifications at a Glance Parameter Common Options Common substrates N-BK7,...

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What Is Borosilicate Glass? Properties, Uses & Buying Guide

Borosilicate glass is a silica-based glass with boron trioxide added to the mix. That one addition changes how the glass behaves under heat and chemical attack enough that it's become the default choice anywhere ordinary glass isn't tough enough — lab glassware, high-end cookware, and precision optical and industrial components. Key Specifications at a Glance Property Typical Value Main components SiO2, B2O3,...

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Optical Prism Buying Guide: How to Choose the Right Prism

Optical prisms redirect, invert, rotate, or split light using refraction and reflection rather than a curved surface. Because the same basic block of glass can do very different jobs depending on its geometry, picking the right prism starts with knowing exactly what you need the beam or image to do. Key Specifications at a Glance Parameter Common Options Common substrates N-BK7, UV...

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Achromatic Doublet Lens: A Complete Buying Guide

An achromatic doublet — often just called an achromat or achromatic lens — is made of two glass elements with different refractive index and dispersion, cemented together. That combination brings two design wavelengths to a common focal point, which sharply reduces chromatic aberration compared with a single lens element. It's the go-to correction lens for any system that has to perform across...

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Meniscus Lens Guide: Positive vs. Negative & Applications

A meniscus lens has one convex surface and one concave surface — the shape gives it its name, since it looks like a crescent moon in cross-section. Meniscus lenses are rarely used on their own; they're almost always paired with other lenses to correct aberration and refine an existing light path. Key Specifications at a Glance Parameter Typical Value Substrate N-BK7, UV...

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Optical Lens Buying Guide: How to Choose the Right Lens

Optical lenses converge or diverge light and sit at the core of imaging, illumination, laser, and inspection systems. Before you order one, it helps to match the lens type, material, and precision grade to the actual application — the checklist below covers the decisions that matter most. Key Specifications at a Glance Parameter Common Options Common substrates N-BK7, UV fused silica Diameter...

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