lens axis


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Related to lens axis: negative lens, spherical lens

lens axis

An imaginary line drawn from the geometric center of a film to the center of a lens. It may project beyond the lens. Also called a camera axis or an optical axis.
References in periodicals archive ?
03 mm along the lens axis, and is stable enough to avoid any significant variation in the x and y axes during this process (Fig.
Thick and thin cut machines historically couldn't co-exist, because of the many differences in aperture, lens axis, focal point and beam delivery characteristics," elaborated Gay.
The camera position is adjustable in four directions, allowing for adjustment of pan, tilt, vertical position, and rotation about the lens axis.
The analysis depth is proportional to the mean free path of an escaping photoelectron and the sine of the angle between the analyzer input lens axis and the surface of the sample.
This means that should the axis of the ocular astigmatism fall between two available parameters in a range of toric lenses (eg, axis of 95, with lens availability being 90 or 100), then it is reasonable to assume the lenses may rotate anti-clockwise (right) in the right eye and clockwise (left) in the left eye when deciding which trial lens axis to select initially.