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  • Aspheric Lenses

Sep 2010
Edmund Optics Inc.Request Info
Edmund Optics has introduced the TechSpec plastic hybrid aspheric lenses. The color-corrected molded aspheric-diffractive lenses are designed to eliminate chromatic aberrations caused by broadband light sources. They feature a proprietary diffraction-limited design and are suited for imaging and ophthalmic applications and for use with tunable laser and broadband or multispectral illumination sources. The aspheric base eliminates spherical aberration, allowing for better image quality. The diffractive surface features a negative optical dispersion that yields good color correction and minimized chromatic aberration. They are also available in higher numerical aperture designs.


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Pertaining to the human eye.
spherical aberration
That basic aberration which leads to the failure of a lens to form a perfect image of a monochromatic, on-axis point source object. Aspheric surfaces may be applied to reduce this defect. When rays from a point on the axis passing through the outer lens zones are focused closer to the lens than rays passing the central zones, the lens is said to have negative spherical aberration; if the outer zones have a longer focal length than the inner zones, the lens is said to have positive spherical...
tunable laser
Any form of laser; e.g., a dye laser, having an output that can be adjusted over a wide range of wavelengths. Normally the range is about 70 nm wide.
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