+852 6066 4630

info@apexeloptic.com

Help Center
Track your oders
Search
Apexel
  • Home
  • Shop
    • Outdoor Optics
      • Monoculars
      • Binoculars
      • Rangefinder
      • Night vision
    • Mobile Lens
      • Macro Lens
      • Wide Angle Lens
      • Telephoto Lens
      • Fisheye Lens
      • Anamorphic Lens
      • Mobile Lens Kit
    • Microscope
      • Digital microscope
    • Vlogging Accessories
      • Gimbal Stabilizer
      • Video Lighting
      • Vlogging Kit
  • Capabilities
    • Manufacturing Capabilities
      • Aspheric
      • Spherical
      • Optical Coatings
      • Filter Coatings
      • Prisms
    • Research and development
    • Manufacturing
    • Quality
  • Volume OEM&ODM
  • Solutions
    • Security and Surveillance
    • Automotive
    • Medical imaging
    • Machine vision
    • LOT Lenses
    • AR/VR
  • Become Our Partner
    • About us
    • Contact us
    • Recruit Internet Celebrity in the World
  • Resource
    • Service & Support
    • Blog
    • Video
    • Warranty
    • Optical knowledge

Blog

Scanning electron microscope and metallographic microscope

Apexeloptic2022-05-28T01:49:51+00:00
Optical product knowledge

Scanning electron microscope and metallographic microscope belong to optical instruments. Many people prefer to use metallographic microscopes as scanning electron microscopes, but there is a big difference between them, and the wrong use can only put more burden on the equipment and accelerate the consumption of metallographic microscopes.

Scanning electron microscope

The difference between a scanning electron microscope and a metallographic microscope

First, the principle is different: metallographic microscopy uses geometric optical imaging, while scanning electron microscopy uses various physical signals excited by a fine-focused electron beam scanning the surface of a sample to modulate the image. The sample surface is bombarded with a high-energy electron beam, and various physical signals are excited on the sample surface, which is received by different signal detectors and converted into image information.

First, the principle is different: metallographic microscopy uses geometric optical imaging, while scanning electron microscopy uses various physical signals excited by a fine-focused electron beam scanning the surface of a sample to modulate the image. The sample surface is bombarded with a high-energy electron beam, and various physical signals are excited on the sample surface, which is received by different signal detectors and converted into image information.

Secondly, the light source is different: a metallographic microscope uses visible light as the light source for the image while a scanning electron microscope uses an electron beam as the light source for the image.

metallographic microscope

Different resolution: the resolution of the metallographic microscope is limited to 0.2-0.5um due to the interference and diffraction of visible light. The scanning electron microscope uses an electron beam as the light source, and its resolution can reach between 1 and 3nm. Therefore, the microstructure observation of metallographic microscope belongs to micron level analysis, while that of scanning electron microscope belongs to nanometer level analysis, and the sample information obtained by scanning electron microscope is more abundant.

Different resolution: the resolution of the metallographic microscope is limited to 0.2-0.5um due to the interference and diffraction of visible light. The scanning electron microscope uses an electron beam as the light source, and its resolution can reach between 1 and 3nm. Therefore, the microstructure observation of metallographic microscope belongs to micron level analysis, while that of scanning electron microscope belongs to nanometer level analysis, and the sample information obtained by scanning electron microscope is more abundant.

Different depth of field: Generally, the depth of field of the metallographic microscope is between 2-3um, so the sample surface smoothness has a very high requirement, so the sample preparation process is relatively complicated. The depth of field of a scanning electron microscope is hundreds of times that of the metallographic microscope, but due to the limitation of its imaging principle, the sample surface must be conductive, so the sample surface must be conductive processing.

Different depth of field: Generally, the depth of field of the metallographic microscope is between 2-3um, so the sample surface smoothness has a very high requirement, so the sample preparation process is relatively complicated. The depth of field of a scanning electron microscope is hundreds of times that of the metallographic microscope, but due to the limitation of its imaging principle, the sample surface must be conductive, so the sample surface must be conductive processing.

Scanning electron microscope

Compared with a metallographic microscope, a scanning electron microscope has wide adjustable magnification, high resolution of the image, large depth of field, rich three-dimensional image, more abundant sample information, and more in-depth and extensive application than a metallographic microscope.


Share this post

Facebook Twitter LinkedIn Google + Email

Related Posts

Lens design fundamentals and the role of filters

Basic principles of lens design: Any lens, new or old, can be distinguished by the... read more

Optical microscope knowledge

The microscope is a kind of precision optical instrument with a history of more than... read more

Understand the common sense of wave plate

Wave plate, also called phase delay plate, because polarized light has a different refractive index,... read more

Optical lens assembly process and production process

An optical lens manufacturer is an indispensable part of the machine vision system, which directly... read more

7 important optical parameters of the microscope

In the microscopic examination, people always hope to get clear and bright ideal images, which... read more

Tips and precautions for routine microscope use

With the development of modern science and technology, the types of microscopes are also increasing... read more

Brief introduction of polarizing splitting prisms-aexeloptic

Brief introduction of polarizing splitting prisms

Polarization is an important feature of light. Polarization splitting prisms are an optical element used... read more

Principle and application of electron microscope

According to the principle of electron optics, electron beam and electron lens are used to... read more

Optical axis adjustment of a microscope

In the optical system of the microscope, the optical axis of the light source, condenser,... read more

Classification and use of prisms

Prisms are made of some transparent materials, such as glass, crystal and other materials made... read more

  • Optical solutions
  • Binoculars
  • Hunting/Shooting Advice & Tips
  • Macro Lens
  • Telephoto Lens
  • Wide Angle Lens
  • Stick Tripod
  • Pre Sales

About The Blog

Recent Posts

Apexel Smartphone Adapter(APL-F002)
Apexel Optic Camber Technology
Optical coating technology
Apexel Optic Camber Technology
Optical coating

Apexel

OPTICAL SOLUTIONS

  • Security lenses
  • Automotive lenses
  • Medical imaging
  • Machine vision
  • loT lenses
Instagram Facebook-f Linkedin Youtube

CUSTOMER SERVICES

  • Return policy
  • Mode of transport
  • About us
  • Contact us
  • Privacy Policy
  • Track your orders
  • Terms of service

SUBSCRIBE NEWSLETTER

Get all the latest information on events, sales and offers. Sign up for newsletter:

Check your inbox or spam folder now to confirm your subscription.

©  2022 Shenzhen Apexel.  All Rights Reserved
  • Home
  • Shop
    • Outdoor Optics
      • Monoculars
      • Binoculars
      • Rangefinder
      • Night vision
    • Mobile Lens
      • Macro Lens
      • Wide Angle Lens
      • Telephoto Lens
      • Fisheye Lens
      • Anamorphic Lens
      • Mobile Lens Kit
    • Microscope
      • Digital microscope
    • Vlogging Accessories
      • Gimbal Stabilizer
      • Video Lighting
      • Vlogging Kit
  • Capabilities
    • Manufacturing Capabilities
      • Aspheric
      • Spherical
      • Optical Coatings
      • Filter Coatings
      • Prisms
    • Research and development
    • Manufacturing
    • Quality
  • Volume OEM&ODM
  • Solutions
    • Security and Surveillance
    • Automotive
    • Medical imaging
    • Machine vision
    • LOT Lenses
    • AR/VR
  • Become Our Partner
    • About us
    • Contact us
    • Recruit Internet Celebrity in the World
  • Resource
    • Service & Support
    • Blog
    • Video
    • Warranty
    • Optical knowledge
  • Log In
  • Register