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  • Aspheric Lenses

Photonics Spectra
Oct 2010
LightPath Technologies Inc.Request Info
LightPath Technologies Inc. has unveiled a family of four aspheric lenses designed for laser diodes operating at 405 or 488 nm and as the primary optics for collimating blue lasers in a variety of applications, including biomedical instrumentation such as flow cytometers, microscopes and fluorescence spectroscopy equipment. Suitable for use also in high-volume data storage systems, the diffraction-limited molded aspheric glass lenses have a compact single-lens design that is optimized for the specific beam divergences, peak wavelength and window material of commercial blue diode lasers to deliver good performance and beam quality. The L-LAL12 and D-LaK6 glasses are fully RoHS-compliant and are available as mounted lenses in the company’s MT lens holders.


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beam divergence
Increase in the diameter of an initially collimated beam, as measured in milliradians (mrad) at specified points; i.e., where irradiance is a given fraction (often 1/e2) of peak irradiance.
The emission of light or other electromagnetic radiation of longer wavelengths by a substance as a result of the absorption of some other radiation of shorter wavelengths, provided the emission continues only as long as the stimulus producing it is maintained. In other words, fluorescence is the luminescence that persists for less than about 10-8 s after excitation.
fluorescence spectroscopy
The spectroscopic study of radiation emitted by the process of fluorescence.
A transparent optical component consisting of one or more pieces of optical glass with surfaces so curved (usually spherical) that they serve to converge or diverge the transmitted rays from an object, thus forming a real or virtual image of that object.
An instrument consisting essentially of a tube 160 mm long, with an objective lens at the distant end and an eyepiece at the near end. The objective forms a real aerial image of the object in the focal plane of the eyepiece where it is observed by the eye. The overall magnifying power is equal to the linear magnification of the objective multiplied by the magnifying power of the eyepiece. The eyepiece can be replaced by a film to photograph the primary image, or a positive or negative relay...
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