Specifications

General

Type:

Fixed Focal Length Lens

Physical & Mechanical Properties

Iris Option:

Fixed

Length (mm):

48.19

Maximum Diameter (mm):

Weight (g):

Maximum Rear Protrusion (mm):

1.17

Diameter (mm):

33.80

Optical Properties

Horizontal Field of View, 1/2" Sensor:

96.8mm - 55.9°

Horizontal Field of View, 1/3" Sensor:

71.0mm - 42.7°

Maximum Image Circle (mm):

9.00

Numerical Aperture NA, Object Side:

0.0062

Horizontal Field of View @ Max Sensor Format:

110.2mm - 62.1°

Number of Elements (Groups):

9 (7)

Horizontal Field of View, 1/1.8" Sensor:

110.2mm - 62.1°

Horizontal Field of View, 1/2.5" Sensor:

86.9mm - 51.0°

Focal Length FL (mm):

6.00

Primary Magnification PMAG:

0.07

Working Distance (mm):

75 - ∞

Aperture (f/#):

f/5.6

Coating:

425 - 675nm BBAR

Coating Specification:

425 - 675nm BBAR

Entrance Pupil Position (mm):

16.08

Horizontal Field of View, 1/4" Sensor:

52.6mm - 32.4°

Object Space Principal Plane (mm):

21.35

Image Space Principal Plane (mm):

6.60

Field of View at Max Sensor Format:

Horizontal: 110mm - 62.1°
Vertical: 80.4mm - 47.8°
Diagonal: 141.9mm - 75°

Maximum Distortion (%):

-6.82

Exit Pupil Position (mm):

-25.52

Lens Wavelength Range:

VIS

Sensor

Maximum Sensor Format:

1/1.8"

Threading & Mounting

Filter Thread:

M43 x 0.75 (Male)

Filter Thread Adapter:

#89-940 (Required)

Front Thread:

M34.0 x 0.5 (Male)

Mount:

C-Mount

Environmental & Durability Factors

Storage Temperature (°C):

-20 to +60 For questions regarding operating temperature please contact our support team

Regulatory Compliance

RoHS:

Compliant

Certificate of Conformance:

View

Product Details

Up to 2/3", C-Mount Lens
Up to 7.5 MegaPixels, 2.8µm Pixel Size Sensors
Ruggedized (Cr) Designs (50g Shock) of our C Series Lens
3.5mm to 50mm Focal Length
Instrumentation (Ci) Versions Also Available

TECHSPEC® Compact Ruggedized (Cr) Series Fixed Focal Length Lenses provide Stabilized Ruggedization, protecting the lens from damage while maintaining optical pointing and positioning after shock and vibration. All individual lens elements are glued in place to reduce object shift on the image. In addition, these lenses feature robust mechanics with a simplified focus and stainless steel locking C-Mount clamp. TECHSPEC® Cr Series Fixed Focal Length Lenses are ideal for calibrated imaging systems such as measurement and gauging, 3D stereo vision, robotics and sensing, autonomous vehicles, and object tracking. The object to image mapping is maintained even after heavy shock and vibration; if the center of the object maps onto the center pixel, it will always map to that same center pixel.

These lenses won the 1^st place 2018 Inspect Award and the Silver Level 2018 Innovators Award.

Note: To learn more about ruggedization, visit our Ruggedization Resource Webpage.

Edmund Optics has created a family of high performance optical designs (the C Series family) and developed 6 customized optomechanical solutions targeted for specific applications. These lens sub-families utilize the same optics as the C Series lenses providing the same optical performance in a variety of optomechanical solutions to meet your application requirements:

C Series: Features locking cam focus and iris adjustment and is the most adjustable version of these optical designs; they are the typical high quality machine vision lenses. Also available with a VIS-NIR Broadband Anti-Reflection (BBAR) Coating.
Ci Series: Simplified mechanics featuring fixed apertures with compact housing. Industrial Ruggedization for reduced size, cost, and locked focus.
Cr Series: All optics glued in place and a locking C-clamp focus ring. Stabilized Ruggedization for reduced pixel shift and improved focus stability.
Cx Series: Modular, flexible mechanics allows lenses to be taken apart for easy integration of accessories such as liquid lenses, apertures, and more.
Liquid Lens Cx Series: Designed with an integrated liquid lens for quick autofocus.
Cw Series: Waterproof, designed to meet IEC Ingress Protection Code IPX7 and IPX9K.

Technical Information

#35-143, 6mm, f/5.6 Cr Series Fixed Focal Length Lens, Distortion Plot

#35-143, 6mm, f/5.6 Cr Series Fixed Focal Length Lens, Relative Illumination Plot

#35-143, 6mm, f/5.6 Cr Series Fixed Focal Length Lens, Working Distance versus Field of View Plot

#35-143, 6mm, f/5.6 Cr Series Fixed Focal Length Lens, Modulated Transfer Function (MTF) Plot, 200mm Working Distance, f5.6

#35-143, 6mm, f/5.6 Cr Series Fixed Focal Length Lens, Depth of Field Plot, 200mm Working Distance, f5.6

#35-143, 6mm, f/5.6 Cr Series Fixed Focal Length Lens, Modulated Transfer Function (MTF) Plot, 500mm Working Distance, f5.6

#35-143, 6mm, f/5.6 Cr Series Fixed Focal Length Lens, Depth of Field Plot, 500mm Working Distance, f5.6

Accessories

Note: Compatible accessories for individual stock numbers may vary. If unsure about which accessories work with your products, please contact us here.

	Title	Compare	Stock Number	Price	Buy

	Filter Adapter M43 x 0.75 from M34 x 0.5 (Female)		#89-940	38.50 C$38.50 Request Quote	In Stock ×

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Recertified Products

Typically 1-2 Recertified Products are in stock at a time. Please contact our sales team if you would like exact availability of an item.

Recertified products are those identified with the recertified logo indicating they were returned to Edmund Optics® and cannot be sold as new for the following reasons:

Open Box – Missing original packaging
Cosmetic Blemishes – Scratches, rub marks or other minor cosmetic imperfections
Service/Repair – Product has been serviced to the factory original specification
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View all our recertified products in the Web Specials section of our website.

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04	Missing Manual	N	Minor Defect/Scratches
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Top Trends of 2022 – TRENDING IN OPTICS: EPISODE 8

Happy holidays from Edmund Optics! Learn about the top trends in the photonics industry covered in our Trending in Optics Series in 2022.

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Types of Machine Vision Lenses

Fixed focal length, zoom, and macro lenses are all variable magnification lenses. Learn more at Edmund Optics.

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Lens Spacers, Shims, and Focal Length Extenders

Want to learn how to extend a lens beyond its limits in an application? Learn more about spacers, shims, and focal length extenders at Edmund Optics.

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MTF Curves and Lens Performance

Explore the differences in the performance of imaging lenses by directly comparing the associated modulation transfer function (MTF) curves.

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The Anatomy of a Lens

Become familiarized with the key components of an imaging lens assembly and how they function.

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The Modulation Transfer Function (MTF)

MTF curves allow you to compare the performance of multiple lenses at the same time. To find out how MTF curves are beneficial, read more at Edmund Optics.

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Basic Lens Selection

To decide what imaging lens is right for a system, it is important to know the parameters of the imaging system used. Learn more at Edmund Optics.

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How to Choose a Fixed Magnification Lens

Fixed magnification lenses typically function properly at a single working distance and are specified by their magnification. Learn more at Edmund Optics.

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Advanced Lens Selection

The modulation transfer function of a lens varies depending on working distance, sensor size, f/#, and wavelength. Learn more at Edmund Optics.

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Aberrational Balancing of MTF in Lens Design

Do you have multiple projects that involve the use of a lens? Find out about different lenses that can be adapted for multiple purposes at Edmund Optics.

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Basic Lens Selection

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Comparison of Optical Aberrations

Trying to understand optical aberrations? Check out how to identify aberrations and view examples at Edmund Optics.

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Edmund Optics Imaging Lab 3.8: Sneak Peek at Future Modules

Learn how to specify imaging system components.

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Best Practice #1 Bigger is Better

Join Greg Hollows, Director of the Imaging Business Unit and EO's Imaging Expert, as he reviews some Best Practice to consider when designing an imaging system.

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Best Practice #2 Don't Believe Your Eyes

Join Greg Hollows, Director of the Imaging Business Unit and EO's Imaging Expert, as he reviews some Best Practice to consider when designing an imaging system.

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Best Practice #3 Don't Get Too Close

Join Greg Hollows, Director of the Imaging Business Unit and EO's Imaging Expert, as he reviews some Best Practice to consider when designing an imaging system.

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Best Practice #7 No Universal Solution

Join Greg Hollows, Director of the Imaging Business Unit and EO's Imaging Expert, as he reviews some best practices to consider when designing an imaging system.

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Best Practice #9 Be A Control Freak

Join Greg Hollows, Director of the Imaging Business Unit and EO's Imaging Expert, as he reviews some best practices to consider when designing an imaging system.

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Best Practice #10 Be The Squeaky Wheel

Join Greg Hollows, Director of the Imaging Business Unit and EO's Imaging Expert, as he reviews some best practices to consider when designing an imaging system.

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Best Practice #11 Make A List

Join Greg Hollows, Director of the Imaging Business Unit and EO’s Imaging Expert, as he reviews some best practices to consider when designing an imaging system.

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The Impact of Distortion

Nick Sischka explains distortion in this hands-on demonstration from the Edmund Optics 2021 Imaging Innovation Summit.

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Calculating Lens Resolution with Precision

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Deciphering Lens Specifications and Choosing the Proper Lens

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A Closer Look at Resolution Testing

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I’ve been using the thin lens approximation to calculate the minimum object distance and field of view of an imaging lens and camera I have, is there a simple formula for estimating these parameters?

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How do I know what lens mount is best to use for my imaging or vision system?

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What are M12 (S-Mount) lenses?

M12 or S-Mount lenses are a type of compact imaging lens used in space-constrained applications.

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What is an MVO Double Gauss imaging lens?

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What are fixed focal length lenses?

Fixed focal length lenses are entocentric imaging lenses used in machine vision.

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What different types of fixed focal length lenses does Edmund Optics offer?

Edmund Optics designs and manufacturers many types of imaging lenses.

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What different types of fixed focal length lenses does Edmund Optics offer?

Imaging lenses feature a wide variety of lens mounts, all of which offer different benefits.

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Angular Field of View (AFOV)

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Aperture (f/#)

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Aperture Stop

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Entrance Pupil

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Exit Pupil

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Field

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Field Efficiency

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Fixed Focal Length Lens

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F-Mount

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Image Circle

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Line Pair (lp)

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Vignetting

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Working Distance (WD)

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Working f/#

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Zoom

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Imaging System Parameter Calculator

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Imaging Lens Selector

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Object Space Resolution

Are you new to imaging and want to learn more about lens magnification? Learn more about lens magnification and other key imaging concepts at Edmund Optics.

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Relative Illumination, Roll-Off, and Vignetting

In order to understand vignetting, it is important to understand sensor sizes, formats, and roll-off and relative illumination. Find out more at Edmund Optics.

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Wavelength Effects on Performance

Wavelengths can be both valuable or hazardous when trying to obtain information from an imaging system. Learn more about fixing wavelength issues at Edmund Optics.

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Sensors and Lenses

Imaging lenses and sensors must be paired together with special attention.

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Imaging Fundamentals

Want to understand the basic concepts of imaging? Learn more about essential terms and how they incorporate in the imaging industry at Edmund Optics.

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Contrast

Is the definition on your image not clear? Go back to the basics and learn more about the contrast of an image and its importance at Edmund Optics.

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Depth of Field and Depth of Focus

Are you getting depth of field and depth of focus confused? Discover the differences and how to distinguish the two from one another at Edmund Optics.

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Lens Mounts

There are numerous mount types for connecting an imaging lens to a camera. Depending on the application, some mounts are more useful than others.

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Distortion

Distortion is an individual aberration that misplaces information but can be calculated or mapped out of an image. Learn more about distortion at Edmund Optics.

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System Throughput, f/#, and Numerical Aperture

When it comes to your lens, the f/# is one of the most important settings because it controls multiple parameters. Find out what the f/# controls at Edmund Optics.

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Machine Vision Filter Technology

While working with machine vision, there are different types of filters that can be used to alter the image. Find out about the different types at Edmund Optics.

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From Lens to Sensor: Limitations on Collecting Information

Trying to understand how much information you can obtain from a lens and sensor? Learn more about the limitations of collecting data at Edmund Optics.

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Liquid Lens M12 Imaging Lenses

TECHSPEC® Liquid Lens M12 Imaging Lenses from Edmund Optics combine a high-resolution with the electronic auto-focus of an integrated liquid lens

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Liquid Lens Cx Series Fixed Focal Length Lenses

TECHSPEC® Liquid Lens Cx Series Fixed Focal Length Lenses from Edmund Optics offer both high resolution and fast electronic focus.

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Why Should I Use a Lens Designed Specifically for SWIR Wavelengths?

Short wave infrared (SWIR) imaging applications require specialized imaging optics, as lenses designed for visible use are not optimized for SWIR wavelengths

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How an Edmund Optics Imaging Lens is Made

Imaging lens assemblies are vital components for a wide range of cutting edge applications including machine vision, biomedical instruments, factory automation, and robotics.

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Imaging Innovation Summit Keynote

Master the mindset needed for building an imaging system from asking the right questions to properly combining imaging technologies.

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Edmund Optics Imaging Lab Module 1: Imaging Overview

Learn how to specify imaging system components.

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Edmund Optics Imaging: Telecentric Lenses versus Hypercentric Lenses

Join EO's Nick Sischka, Director of Imaging, as he inspects pipes for various defects using the TECHSPEC Telecentric Lens versus the TECHSPEC Hypercentric Lens.

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Best Practice #4 Light Up Your Life

Join Nick Sischka, Vision Solutions Specialist and member of EO's Imaging Team, as he reviews some best practices to consider when designing an imaging system

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LIGHT TALK - EPISODE 2: Increasing Imaging Sensor Sizes with Katie Schwertz

Join our discussion about increasing imaging sensor sizes and what that means for optical designers in the second episode of our LIGHT TALKS series.

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Manipulating Wavebands: Color & Filters

Nick Sischka explains why color consideration and illumination are so important for machine vision in this hands-on demonstration from the Edmund Optics 2021 Imaging Innovation Summit.

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Lens Selection Guide, Part 2

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The makings of a successful imaging lens, Part Three: Testing and metrology, ensuring you get what you asked for

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The makings of a successful imaging lens, Part Two: Performance-based specifications and their design considerations

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The makings of a successful imaging lens, Part One: Application and specification development

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Vision & Sensors Lens Selection Guide, Part 1

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What is the difference between Primary Magnification and System Magnification?

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I need a video lens for my camera - but where do I start?

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What is the difference between depth of field and depth of focus?

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Which type of colored filter is best for my imaging application?

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Back Flange Distance

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Depth of Field (DOF)

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Depth of Focus

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Distortion

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Distortion, Non-Monotonic

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Field Curvature

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Focal Length Extender

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Horizontal Resolution

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Hyperfocal Distance

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Primary Magnification (PMAG)

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Relative Illumination (RI)

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S-Mount

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Sliding Focusing Mechanism

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T-Mount

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The Airy Disk and Diffraction Limit

The diffraction pattern caused when light passes through an aperture is called the Airy Disk. Find out how the Airy Disk can impact your image at Edmund Optics.

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What is Imaging?

In imaging, light rays are mapped from an object onto an imaging sensor by an imaging lens, to reproduce the characteristics and likeness of the object for the purposes of inspection, sorting, or analysis.

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What is SWIR?

Have a question about short-wave infrared (SWIR)? Find definitions, application uses, and examples at Edmund Optics.

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Resolution and MTF Testing

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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.

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Best Practices for Better Imaging

Do you use imaging systems constantly in your professional field? Learn top tips for improving your imaging system and practices at Edmund Optics.

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Aberrations

Need help understanding aberration theory? Learn about a few fundamental concepts to help clarify your understanding at Edmund Optics.

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Lens Types, Resolution, and Sensor Coverage

No imaging lens is the ideal choice for every type of imaging sensor, as multiple tradeoffs must be weighed and prioritized for every application.

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Axial and Lateral Chromatic Aberration

Chromatic aberrations impact the performance of imaging systems in many different ways, as exemplified in this hands-on demonstration.

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Edmund Optics Imaging Lab 1.1: Field of View

Learn how to specify imaging system components.

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Edmund Optics Imaging Lab 1.2: Working Distance

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Edmund Optics Imaging Lab 1.5: Sensor Size

Learn how to specify imaging system components.

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Edmund Optics Imaging Lab 3.2: The W of Illumination Geometry

Learn how to specify imaging system components.

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Edmund Optics Imaging Lab 3.3: Directional Illumination

Learn how to specify imaging system components.

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Edmund Optics Imaging Lab 3.4: Directional Illumination of Ring Lights

Learn how to specify imaging system components.

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Edmund Optics Imaging Lab 3.5: Backlights

Learn how to specify imaging system components.

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Edmund Optics Imaging Lab 3.6: Dome Lights

Learn how to specify imaging system components.

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Edmund Optics Imaging Lab 3.7: Line Lights

Learn how to specify imaging system components.

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Best Practice #5 Color Matters

Join Nick Sischka, Vision Solutions Specialist and member of EO's Imaging Team, as he reviews some best practices to consider when designing an imaging system.

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Best Practice #6 There Can Be Only One

Join Nick Sischka, Director of Imaging, as he reviews some best practices to consider when designing an imaging system.

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LIGHT TALK - EPISODE 1: Machine Vision Trends with Nick Sischka

Join our discussion around machine vision trends including such as increasing resolution and new sensors in the first episode of our LIGHT TALKS series.

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Hyperspectral & Multispectral Imaging – TRENDING IN OPTICS: EPISODE 7

Hyperspectral and multispectral imaging are imaging technologies that capture information from a broader portion of the electromagnetic spectrum.

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Next generation image sensors: Are suppliers ready to meet growing customer expectations?

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If I want to design with your lenses and lens assemblies, how do I get the information that I need?

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Contrast

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Spatial Frequency

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Resolution and Contrast Comparison

Learn how Edmund Optics maintains optical performance across the entire image plane through this resolution and contrast comparison using our C Series FFL lens.

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Edmund Optics Imaging Lab 1.4: Depth of Field

Learn how to specify imaging system components.

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Edmund Optics Imaging Lab 1.7: Contrast In Depth

Learn how to specify imaging system components.

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Diffraction Limit

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Modulation Transfer Function (MTF)

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Nyquist Limit

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Parfocality

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Resolution

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Resolving Power

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Resolution

Do you want to understand how a lens works? To do so, you must learn key terms for how the lens functions, including resolution. Find out more at Edmund Optics.

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