High resolution lenses for machine vision — standard and custom lens design
Introduction To Various Microscope Lens Types
High Resolution Lenses for machine vision, instrumentation, inspection and vibration-sensitive applications. Standard and custom hi-res lens assemblies.
Microscope Lens
Microscopes are not a one size fits all as many scientists, medical professionals and others who use these devices on a regular basis. Consider that a microscope is an optical device that allows for the viewing of objects that are not visible to the naked eye and you can see the need for different types to address the myriad items that need to be viewed and researched.
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Compound microscopes are made up of several “objective lenses” that allow for viewing a specimen from various angles. Compound microscopes use three lenses are used to accomplish the viewing, the eyepiece lens, condenser lens and objective lens. There can also be compound and electron lenses and these lend themselves to the power and magnification of the device itself.
They share here, information on the various types of microscopes and lenses that are available on the market today:
- The condenser lens is the one which focuses the light source from the microscope onto the specimen. These lenses are extremely useful in magnifications of 400x and higher because the specimen becomes fuzzy if the light source isn’t focused. There are different styles of condenser lenses and they range from adjustable aperture that helps to control the light beam diameter; aplanatic condenser lens that sharpens the view by “Correcting spherical aberrations caused by light ray refraction; and the acromatic condenser that corrects for color in high magnification powered devices.
- The eyepiece lens is the area that the researcher uses to view the specimen on the slide. This lens typically has a 10x magnification but can also range from as low as 5x up to 20x. The magnification strength will hinge on the focal length of the eyepiece itself.
- The objective lens is the one which is in the closest proximity to the specimen. A typical microscope could have several of these lenses to help in the magnification strength needed. Compound microscopes usually have magnification powers between 4x up to 1000x. These lenses are usually designed according to common specifications and can also have interchangeable components that allow it to be switched between microscopes.
The style and magnification of the lens used will depend on the style of microscope used and the specimen being examined.