Go to GlobalSpec.com Home
 

Toolbar   The Engineering Toolbar
The Ultimate Resource for Engineering and Technical Research. (Learn More)

Optical Lens Assemblies

About Optical Lens Assemblies

Optical lens assemblies are composed of a number of lenses mounted for a particular imaging function. There are many types of optical lens assemblies. Examples include objective lenses, collimator lenses, and gauging lenses. An objective lens is a lens or system of lenses in a telescope or microscope that is nearest the object being viewed. A collimator is used to filter a stream of rays so that only the rays traveling parallel to each other in a certain direction are permitted. A gauging lens is used for machine vision applications involving significant space limitations. Other types of optical lens assemblies are also available. Optical manufacturers produce lenses, prisms, mirrors, flats, windows, achromat doublets, and optical glass. An optical lens manufacturer can also produce custom made lenses.

Optical lens assemblies differ in terms of performance specifications. Optical sub assemblies are designed for semiconductor, industrial, biotech/medical, commercial and research applications. An optical sub assembly includes a combination of optical components including aspheric and spherical lenses, diffractive elements, coatings, and optical design ability. An optical sub assembly can be single, dual, or three-field-of-view lenses in addition to zoom lenses, in the 3 to 5µ and 8 to 12µ range. Objective lenses gathers light from a sample and forms an image. An objective lens should be well corrected for aberrations, as any image defect cannot be removed by elements later in the light path, but only magnified further. Collimators are optical devices that consist of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens. With a collimator, the light rays leave the slit as a parallel beam. Gauging lenses are available with a variety of specifications including the performance of less than 0.5-degree chief ray angle over the entire object field which enables precise gauging of 3-dimensional (3D) objects. A gauging lens also has a variety of base and attachment lenses that cover most applications. A gauging lens should have low distortion to provide accurate images. Like other optical lens assemblies, gauging lenses are available with both C-mount and F-mount base lenses.

More >>

Other Topics You Might Be Interested In


Engineering Web: Optical Lens Assemblies

Pages: 1 - 3 of 156

CVI Melles Griot - CVI Melles Griot Photonics Products and...
Positioners Laser Beam & Spectral Measurement Machine Vision Shutters Optical Tables, Breadboards & Vibration Isolators Microscope Components
Optical Assemblies
Optical Assemblies Whether you need 1 lens or quantities of Optical Assemblies Optical Components Coatings
See JML Optical Industries, Inc. Information
JML Optical: The Complete Source for Custom Precision...
Optical Assemblies Optical Components Coatings JML Optical Home : Engineering : Capabilities :
See JML Optical Industries, Inc. Information
More >>
Optical Components and Optics Home