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Aspheric lenses are designed to be diffraction limited. They usually achieve a smaller spot size than both the plano-convex and positive meniscus lens. This provides the highest power density at the lens workpiece with equivalent focal length.
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These lenses are ideally suited to condensing and light collection applications. For these purposes it is necessary to locate the optic as close as possible to the source or detector in order to benefit from a large numerical aperture collection cone. These aspheric lenses are flat or convex spherical on one side and have a steep aspheric on the other side.
The lenses are molded and polished from high quality crown optical glass. Coating is not recommended since coatings work poorly on steep aspherics as the angle of incidence is widely variable across the diameter of the lens.
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Panasonic aspherical glass lenses are a key device of optical electronics, with high product reliability and stability achieved by a wide range of glass material and a variety of designs. Panasonic's unique manufacturing process, "One-Shot" precision moulding, as well as their excellent aspherical designs, enable devices using these aspherical glass lenses to be smaller and lighter with higher performance.
Lens Features
* High numerical aperture based on aspherical design
* Compact and lightweight based on short focal length design
* Equal optical characteristics achieved by high precision moulding method
* Unaffected by extremes of temperature or humidity
* High product reliability and stability
Applications
* Pick up lens for optical drive devices
* Collimator lens for laser beam printers
* Coupling lens for optical communication systems
* Image formation lens for sensors
* Collimator lens for WDM couplers
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Doric Lenses have developped a reliable technique to produce aspheric lenses. We have some standard aspheric lenses available, but we can ajust to you requirement on request.
Aspheric lenses is a family of lenses with one or both surfaces that is not pure radius in order to reduce aberrations in some specific applications. The aspheric surface may have a conic constant, or higher aspheric coefficients.
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Molded lenses are used in a variety of photonic products: barcode scanners, laser diode to fiber couplings, optical data storage, and medical lasers, to name a few. In many of these applications, the material of choice is optical glass because of its durability and performance stability over a wide environmental range. High power transmittance is also an added advantage.
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An asphere is an optic with one or more surfaces that are defined by a polynomial equation. Aspheres are often used to reduce the number of elements, aberrations, and the weight of an optical system and are commonly found in telescopes, camera lenses, and diagnostic instruments.
Manufacturing aspheres demands the utmost in talent and technology. Just as important, however, is the actual measurement of the aspheric profile to assure adherence to specification. Optimax utilizes surface profilers to inspect to /- 1 micron tolerances, and null lenses with interferometers to certify parts with tighter tolerances.
Optimax inspects 100% of all optics and provides test data with prototype orders. We utilize state-of-the-art metrology and provide on-time delivery guarantees to ensure your satisfaction!
Optimax can provide optics complete with BBAR, V-coat, and mirror coatings. We have four electron-beam coaters supported by a Perkin-Elmer Lambda 900 Spectrophotometer. For more details please see our Coatings data sheet.
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ROLYN Aspheric Lenses are highest quality molded and fire polished lenses, designed to minimize spherical aberrations which are of major concern in condensing systems.
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Aspherical elements eliminate monochromatic aberrations (e.g. spherical aberration) and improve focusing and collimating accuracy. They replace a multiple spherical element assembly, thereby combining weight reduction and a more compact design. Thus the number of back reflections is reduced, and a higher transmission is achieved.
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Aspheric Lenses
Aspheric lenses offer better performance by reducing spherical aberrations at low f-numbers. These lenses are ideal for high-throughput condensing, collimating and imaging applications. MediVision Optics offers unique manufacturing capabilities by grinding and polishing aspheres during the production process. Unlike conventional manufacturing techniques, our capabilities allow us to produce components which offer better surface finish and tighter tolerances.
Materials: Bk7 or equivalent
Diameter Range : 4mm to 50mm
Diameter Tolerance: +/- .2mm
Paraxial Focal Length Tolerance : /- 3%
Surface Quality : 60-40
Rear Surface: Spherical Convex or Concave
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