Aspheric lens

Aspheric lens

Lens in which at least one surface deviates from a spherical shape.

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Part of Speech: noun
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Industry/Domain: Eyewear
Category: Optometry
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Related terms

aspheric lens

Eyewear; Optometry

Lens in which at least one surface deviates from a spherical shape.

aspherical lens

Photography; Professional photography

A lens with a non-spherical curve used to compensate for a variety of aberrations, including spherical aberrations. Such lenses are effective in controlling the distortion ...

aspherical lens

Photography; Lenses; Photography techniques

A lens with a curved, non-spherical surface. Used to reduce aberrations and achieve a more compact lens size. With a spherical lens, rays travelling from the lens periphery create ...

aspherical lens

Photography; Professional photography

lens with a curved, non-spherical surface. Used to reduce aberrations and enable a more compact lens size.

lens

Biology; Neuroscience

Transparent structure in the eye whose thickening or flattening in response to visceral motor control allows light rays to be focused on the retina.

lens

Physics; Optics

A piece of glass that is shaped in such a way as to form an image. Lenses work by changing the direction of light.

ophthalmoscope

Eyewear; Optometry

An optical instrument used to examine the external and internal parts of the eye, particularly the media and the fundus.

pantoscopic angle

Eyewear; Optometry

1. Angle in the vertical plane between the optical axis of a spectacle lens and the visual axis of the eye in the primary position, usually taken to be the horizontal. 2. Angle ...

optical material

Eyewear; Optometry

Transparent material capable of being manufactured into optical components.

optical radiation hazard

Eyewear; Optometry

Possibility of damage to the retina by optical radiation.

optical centre

Eyewear; Optometry

For practical purposes, the intersection of the optical axis with the front surface a lens.

ophthalmoscope

Optometry; Optometry

An optical instrument used to examine the external and internal parts of the eye, particularly the media and the fundus.

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