Home > Terms > English, UK (UE) > Focal Length

Focal Length

Distance between the centre of a lens and the point on the optical axis to which parallel rays of light are converged by the laser.

This is auto-generated content. You can help to improve it.
0
Improve it
More
Collect to Blossary

Other Languages:

More

Member comments

You have to log in to post to discussions.

Related terms

focal length
Eyewear; Optometry

Distance in an optical system from the focal point to the corresponding principal point, measured along the optical axis (axis of symmetry).

focal length
Physics; Optics

The distance from the surface of a lens or mirror to the point where the light rays come together to form a clear image.

focal length
Physics; General physics

The distance between the focal point and the vertex of a mirror or lens. For concave mirrors and convex lenses, this number is positive. For convex mirrors and concave lenses, ...

focal length
Engineering; Electronic engineering

Symbol, F. The distance from the center of a lens or dish antenna to the principal focus.

focal length
Earth science; Remote sensing

In cameras, the distance from the optical center of the lens to the plane at which the image of a very distant object is brought into focus.

focal length
Consumer electronics; Digital camera

The distance from the rear model plane of a lens to the focus when the lens is focused at the infinity position.

Absorb
Industrial machinery; Laser equipment

To transform radiant energy into a different form accompanied by a rise in temperature.

Absorption Coefficient
Industrial machinery; Laser equipment

Factor describing light's ability to be absorbed per unit of path length.

Accessible Emission
Industrial machinery; Laser equipment

The magnitude of accessible laser (or other collateral) radiation of a specific wavelength or emission duration at a particular point as measured by appropriate methods and ...

Accessible Emission Limit
Industrial machinery; Laser equipment

The maximum accessible emission level limit (AEL) permitted within a particular class. In ANSI Z-136.1, AEL is determined as the product of Accessible Emission times the Maximum ...

Active Medium
Industrial machinery; Laser equipment

Collection of atoms or molecules capable of undergoing stimulated emission at a given wavelength.

Afocal
Industrial machinery; Laser equipment

Literally, "without a focal length"; an optical system with its object and image point at infinity.

Terms in the News

Featured Terms

Harry8L
  • 0

    Terms

  • 0

    Blossaries

  • 1

    Followers

Industry/Domain: Computer Category: Desktop PC

Apple I

The first Apple personal computer was released in 1976, where it was sold for $666.66. It was made by Steve Wozniak, co-founder of Apple. 200 units ...

Contributor

Featured blossaries

Best Goalkeepers in Worldcup 2014

Category: Entertainment   1 9 Terms

Most Popular Cooking TV Show

Category: Entertainment   4 7 Terms

Browers Terms By Category

TERMS

SOCIAL

EXTRAS

SOLUTIONS