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See all 7 Products in Family

TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm, 400 - 750nm Broadband Dielectric, N-BK7 90° Specialty Mirror

Name: 20mm, 400 - 750nm Broadband Dielectric, N-BK7 90° Specialty Mirror
Brand: TECHSPEC
SKU: 26-454
Price: A$307.20

Broadband Dielectric 90° Specialty Mirrors

Stock #26-454 3-5 days

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A$307^.20

Qty 1-5
A$307.20

Qty 6+
A$246.40

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Product Downloads

Curve:pdf

PDF Drawing:pdf

IGES:igs

eDrawing:eprt

EO Spec Sheet

Specifications
Product Details
Technical Information
Accessories
Related Products
Custom
Imaging Lens Selector
Frequently Purchased Together
Resources

Specifications

General

Type:

Right Angle Mirror

Physical & Mechanical Properties

Bevel:

Protective bevel as needed

Clear Aperture (%):

90.00

Dimensional Tolerance (mm):

±0.1

Length of Hypotenuse (mm):

28.30

Length of Legs (mm):

20.00

Optical Properties

Angle Tolerance (arcmin):

±2

Coating:

Dielectric Mirror (400 - 750nm)

Coating Specification:

Legs - R_avg ≥98% @ 400 - 750nm (0 - 45°)
R_avg ≥99% @ 400 - 750nm (0°)

Ray Deviation (°):

90.00

N-BK7

Surface Quality:

40-20

Wavelength Range (nm):

400 - 750

Image Orientation:

Left-Handed

Power (fringes) @ 632.8nm:

1.25

Irregularity (fringes) @ 632.8nm:

0.50

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 235:

Compliant

Product Details

Splits Input Image into Two Paths Separated by 180°
>99% Average Reflectivity Over 400 – 750nm
Additional Right Angle Prism and 90° Specialty Mirror Options Available

TECHSPEC® Broadband Dielectric 90° Specialty Mirrors are constructed from right angle prisms with a dielectric mirror coating on the two legs and an uncoated hypotenuse. The mirrored surfaces form a precise 90° angle, ideal for splitting an image from a single imaging lens onto two different cameras, or for combining two images onto a single camera. These mirrors are available in a range of sizes from 5 – 75mm and coated on an N-BK7 substrate. TECHSPEC® Broadband Dielectric 90° Specialty Mirrors feature greater than 99% reflectivity from 400 – 750nm, increasing system performance by decreasing energy loss compared to standard metal coated mirrors.

Technical Information

Accessories

Related Products

90° Specialty Mirrors

Right Angle Prisms

Right Angle Mirrors

Benchtop Optical Mounts

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

Custom dimensions, materials, coatings, and more
High-precision surface quality and flatness
Tight tolerances and complex geometries
Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Imaging Lens Selector

Frequently Purchased Together

Resources

Filter

Anti-Reflection (AR) Coatings

Anti-reflection (AR) coatings are applied to optical components to increase throughput and reduce hazards caused by back-reflections.

View Now

An Introduction to Optical Coatings

Optical coatings are used to influence the transmission, reflection, or polarization properties of an optical component.

View Now

Introduction to Optical Prisms

Learn about the different types of optical prisms, their applications, and how to select the right prism for your specific system.

View Now

Retroreflector

View Now

Ultraviolet fatigue testing of laser optics

View Now

Basic Principles of Raman Scattering and Spectroscopy

Raman spectroscopy is a technique used to identify the chemical composition of samples based on how light scatters off of them. Learn more & view related optics

View Now

Parity

View Now

UV Optics: Tighter Tolerances and Different Materials

UV Lenses require extremely tight tolerances and novel materials such as sapphire. Learn more at Edmund Optics.

View Now

Why Laser Damage Testing is Critical for UV Laser Applications

Laser Induced Damage Threshold describes the maximum quantity of laser radiation an optic can take before damaging. Learn more at Edmund Optics.

View Now

Can BK7 be used for UV applications?

View Now

Ultraviolet (UV) Spectrum

View Now

Removing Protective Plastic Coating

A protective plastic coating protects a variety of our flat optics, such as optical windows, optical mirrors, and beamsplitters, from scratches during shipping.

View Now

Bevel

View Now

Seamed Edge

View Now

Metallic Mirror Coatings

Want to learn more about metallic mirror coatings? Find information about standard and custom metallic mirror coatings that are available at Edmund Optics.

View Now

Optical Prisms Review

View Now

Optical Mirrors Review

Mirrors are commonly used to fold or compact an optical system.

View Now

What is the difference between a first-surface and a second-surface mirror?

View Now

You specified a first surface mirror but you seem to have sold me a second surface mirror. What happened?

View Now

What is a seamed edge?

View Now

I’d like to adhere two prisms together, how can I effectively achieve this? Is there a specific adhesive that you recommend?

View Now

Dove Prism

View Now

Equilateral (Dispersing) Prism

View Now

Littrow Dispersion Prism

View Now

Penta Prism

View Now

Prism

View Now

Surface Flatness

View Now

Trihedral Prism (Corner Cube Retroreflector)

View Now

Ultraviolet Lasers – TRENDING IN OPTICS: EPISODE 2

A new generation of compact, cost-effective ultraviolet (UV) lasers is allowing more applications to benefit from the increased precision of UV wavelengths.

View Now

Microlithography

View Now

How do I clean my optics?

View Now

Edmund Optics Global Manufacturing Facilities

Edmund Optics® (EO) manufactures millions of precision optical components and subassemblies every year in our 5 global manufacturing facilities.

View Now

Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Learn about the metrology that Edmund Optics® uses to guarantee the quality of all optical components and assemblies.

View Now

UV vs. IR Grade Fused Silica

UV grade fused silica is ideal for UV and visible applications, but IR grade fused silica has better transmission in the IR due to a lack of OH- impurities.

View Now

Hyperspectral and Multispectral Imaging

Are you trying to gauge depth of field in your imaging system? Take a closer look at this article on depth of field calculations at Edmund Optics.

View Now

Surface Quality

View Now

You offer many substrates for UV and IR applications. How do I know which is best for me?

View Now

Prism Tunnel Diagrams

View Now

Optical Prism Application Examples

There are many types of optical prisms. Find examples, information, and applications for different types of optical prisms at Edmund Optics.

View Now

I’m looking for a way to invert my field of view. I’d like to invert the vertical not the horizontal dimension. Do you have a stock solution or do I have to look into custom?

View Now

What is the difference between ¼ wave, 1/10 wave, and 1/20 wave mirrors?

View Now

Does the polarization of light change after reflecting off a mirror?

View Now

How do I clean my mirrors?

View Now

What is the main application difference between the many types of prisms that you sell?

View Now

How do I calculate my working distance after my image is reflected from a right angle prism?

View Now

Can wedge prisms be used for beam stearing?

View Now

How do I mount a mirror to a mirror mount that doesn't have a clamp or retainer ring?

View Now

Angle of Incidence

View Now

Angle of Reflection

View Now

Cold Mirror

View Now

Eccentricity

View Now

Right Angle Prism

View Now

Top Optics Trends of 2021 – TRENDING IN OPTICS: EPISODE 3

Several of the most interesting trends in optics and photonics of 2021 were the landing of the Perseverance Rover on Mars, Stemmed Mirrors, minimizing thermal lensing in ultrafast laser systems, and developments in ultraviolet lasers.

View Now

What is the difference between Protected Aluminum, Enhanced Aluminum, UV Enhanced Aluminum, Protected Gold, and Protected Silver?

View Now

How do you measure the reflectivity of mirrors with a reflectivity less than 99.5%?

View Now

Do you have mounts for square or rectangular optics?

View Now

First Surface Mirror

View Now

Power

View Now

Reflection

View Now

Specular

View Now

Total Internal Reflection (TIR)

View Now

The factory calibration of your UV-VIS-NIR Spectrometer only includes wavelength but not response (irradiance). I can measure raw data which is only usable for transmittance/reflectance measurements. How do I get irradiance measurements?

View Now

Surface Accuracy

View Now

BBAR Coating

View Now

Understanding Surface Quality Specifications

The surface quality of optical components the scattering off of its surface, which is especially important in laser optics applications.

View Now

Anti-Reflection (AR) Coating

View Now

Parallelism

View Now

Introduction to Basic Ray Optics

An understanding of refraction and basic ray optics is a critical foundation for understanding more complicated optical concepts and technologies.

View Now

Clear Aperture (CA)

View Now

Refraction

View Now

20mm, 400 - 750nm Broadband Dielectric, N-BK7 90° Specialty Mirror

Specifications

General

Physical & Mechanical Properties

Optical Properties

Regulatory Compliance

Product Details

Technical Information

Accessories

Related Products

Custom

Imaging Lens Selector

Frequently Purchased Together

Resources

Anti-Reflection (AR) Coatings

An Introduction to Optical Coatings

Introduction to Optical Prisms

Retroreflector

Ultraviolet fatigue testing of laser optics

Basic Principles of Raman Scattering and Spectroscopy

Parity

UV Optics: Tighter Tolerances and Different Materials

Why Laser Damage Testing is Critical for UV Laser Applications

Can BK7 be used for UV applications?

Ultraviolet (UV) Spectrum

Removing Protective Plastic Coating

Bevel

Seamed Edge

Metallic Mirror Coatings

Optical Prisms Review

Optical Mirrors Review

What is the difference between a first-surface and a second-surface mirror?

You specified a first surface mirror but you seem to have sold me a second surface mirror. What happened?

What is a seamed edge?

I’d like to adhere two prisms together, how can I effectively achieve this? Is there a specific adhesive that you recommend?

Dove Prism

Equilateral (Dispersing) Prism

Littrow Dispersion Prism

Penta Prism

Prism

Surface Flatness

Trihedral Prism (Corner Cube Retroreflector)

Ultraviolet Lasers – TRENDING IN OPTICS: EPISODE 2

Microlithography

How do I clean my optics?

Edmund Optics Global Manufacturing Facilities

Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

UV vs. IR Grade Fused Silica

Hyperspectral and Multispectral Imaging

Surface Quality

You offer many substrates for UV and IR applications. How do I know which is best for me?

Prism Tunnel Diagrams

Optical Prism Application Examples

I’m looking for a way to invert my field of view. I’d like to invert the vertical not the horizontal dimension. Do you have a stock solution or do I have to look into custom?

What is the difference between &frac14; wave, 1/10 wave, and 1/20 wave mirrors?

Does the polarization of light change after reflecting off a mirror?

How do I clean my mirrors?

What is the main application difference between the many types of prisms that you sell?

How do I calculate my working distance after my image is reflected from a right angle prism?

Can wedge prisms be used for beam stearing?

How do I mount a mirror to a mirror mount that doesn't have a clamp or retainer ring?

Angle of Incidence

Angle of Reflection

Cold Mirror

Eccentricity

Right Angle Prism

Top Optics Trends of 2021 – TRENDING IN OPTICS: EPISODE 3

What is the difference between Protected Aluminum, Enhanced Aluminum, UV Enhanced Aluminum, Protected Gold, and Protected Silver?

How do you measure the reflectivity of mirrors with a reflectivity less than 99.5%?

Do you have mounts for square or rectangular optics?

First Surface Mirror

Power

Reflection

Specular

Total Internal Reflection (TIR)

The factory calibration of your UV-VIS-NIR Spectrometer only includes wavelength but not response (irradiance). I can measure raw data which is only usable for transmittance/reflectance measurements. How do I get irradiance measurements?

Surface Accuracy

BBAR Coating

Understanding Surface Quality Specifications

Anti-Reflection (AR) Coating

What is the difference between ¼ wave, 1/10 wave, and 1/20 wave mirrors?