Illustrative single protected aluminum mirror

optical-mirrors

Protected Aluminum Mirrors

A metallic-coated mirror offering broadband reflectivity from UV through infrared at a generally more economical price point than gold or silver coatings.

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Share requirements, quantities and a drawing if available. Specifications and supply terms require confirmation.

Overview

Aluminum mirror coatings provide broadband reflectivity spanning ultraviolet through infrared, making them a general-purpose choice where a single mirror needs to work across a wide spectral range rather than being optimized for one band. A thin protective overcoat is typically applied over the aluminum layer to improve durability, which is why this category is usually called "protected aluminum. " Aluminum coatings are generally positioned as the more economical option in this market compared to gold or silver coatings, which each optimize for a narrower spectral advantage. Procurement review should center on using an aluminum-based reflector with a protective overcoat where broad spectral use and durability matter.

Key Selection Points

Broadband reflectivity spanning UV through infrared, useful where one mirror must cover multiple bands
Generally the more economical metallic mirror coating option in this market compared to gold or silver
Protective overcoat improves durability over bare aluminum in this product category

Applications

Protected aluminum mirrors are used in general-purpose optical instrumentation, imaging systems and beam-steering applications where broadband UV-to-IR reflectivity is more important than the highest possible reflectivity at one specific wavelength.

Technical Reference

Spectral Performance

This module explains which spectral variables must be defined before measured performance can be reviewed. For Protected Aluminum Mirrors, the module focuses on using an aluminum-based reflector with a protective overcoat where broad spectral use and durability matter.

Review measured performance against supplier or test-lab data tied to the exact configuration.
Record wavelength region, angle of incidence and polarization with the measurement context.
Confirm transmission, reflectance and blocking requirements against approved evidence for the selected configuration.
Product-specific review: connect wavelength band with protective overcoat and document the trade-off against bare aluminum or dielectric mirrors.

Technical illustration pending

RFQ Specification

Prepare a product-specific enquiry

Include the requirements you know and identify any points that need confirmation.

RFQ input	What to provide
Input 1	Procurement objective for Protected Aluminum Mirrors: using an aluminum-based reflector with a protective overcoat where broad spectral use and durability matter.
Input 2	Lock wavelength band before requesting a decision on AOI and polarization.
Input 3	Describe protective overcoat and the mating or operating condition for cleaning and environment.
Input 4	Do not omit this product-specific point: state the useful band, AOI, environmental exposure and allowed cleaning method.
Input 5	Include quantity and project phase; MOQ, stock and lead time are confirmed during quotation.
Input 6	Identify drawing revision, critical notes and evidence needed at acceptance.

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Frequently Asked Questions

How does aluminum compare to gold or silver mirror coatings?

Aluminum offers broadband UV-to-IR reflectivity and is generally the more economical option; gold is typically preferred for highest IR reflectivity, and silver for highest visible/near-IR reflectivity. See our Gold Mirrors and Silver Mirrors pages for those options.

Can I get a custom size or mount for Protected Aluminum Mirrors?

Protected Aluminum Mirrors requires this decision to be tied to wavelength band and AOI and polarization. Share your drawing or exact dimensions through the RFQ form and we will confirm feasibility.

Which specification should be fixed first for Protected Aluminum Mirrors?

Begin with wavelength band. It determines how AOI and polarization and protective overcoat should be evaluated before the mechanical details are finalized.

When is Protected Aluminum Mirrors a better fit than bare aluminum or dielectric mirrors?

Choose between them by testing the requirement for using an aluminum-based reflector with a protective overcoat where broad spectral use and durability matter. If that requirement is absent, the comparison product may provide a simpler procurement path.

What should an RFQ for Protected Aluminum Mirrors include?

State the useful band, AOI, environmental exposure and allowed cleaning method. Also include quantity, drawing revision and the required acceptance evidence. Final availability is confirmed during quotation.