Definition of camera

camera

A light-tight box that receives light from an object or scene and focuses it to form an image on a light-sensitive material or a detector. The camera generally contains a lens of variable aperture and a shutter of variable speed to precisely control the exposure. In an electronic imaging system, the camera does not use chemical means to store the image, but takes advantage of the sensitivity of various detectors to different bands of the electromagnetic spectrum. These sensors are transducers that convert energy received in to an electronic or electrical effect (i.e., change of resistance, current, electromotive force, the emission of electrons); the signals are stored (now most significantly in digital form), and eventually displayed, most frequently on a cathode-ray tube. See also cathode-ray tube; orthicon; vidicon.

POPULAR ARTICLES

HELPFUL TOOLS

Requesting information about:

* First Name:

* Last Name:

* Email Address:

* Company:

* Country:

Message:

When you click "Send Request", we will record and send your personal contact information to the supplier by email so they may respond directly. You also agree that Photonics Media may contact you with information related to this inquiry, and that you have read and accept our Privacy Policy and Terms and Conditions of Use.

* Required

Menu

Search

camera