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These are cemented achromats with a very precise range of tolerances and specifications. They are extremely convenient general purpose lenses. Being cemented they do not need a lens cell and can be treated as an individual component.
These lenses can be used as collimators, focusing lenses or light collectors. Optimized for use at three wavelengths, 486.1, 546.1 and 656.3nm, these lenses perform well throughout the visible spectrum. They have a minimum of spherical and chromatic aberration and perform well for all paraxial imaging tasks. These achromats are coated with a broadband Anti-Reflection coating to reduce surface losses in the visible region. Optional Anti- Reflection coatings for other wavelength regions are also available.
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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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Collimating Optics: Plano-convex lenses; copper total reflectorReflective and transmissive collimating optics are used in beam delivery systems to maintain beam collimation between the laser resonator and the focusing optics. Reflective collimators typically use Cu total reflectors, while transmissive collimators typically use ZnSe lenses.
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As the name suggests, cylindrical lenses are either round or rectangular objects with cylindrically shaped surfaces. They differ from spherical lenses in that they focus a beam to a focal line rather than a focal point.
Transmission is improved by applying an anti-reflection coating on both sides, and multilayer coatings are available for various areas of the light spectrum. Cylindrical lenses can be made from ZnSe, Ge, Si, and other IR materials.
Applications include laser scanners, laser diode systems, spectrophotometers, projectors, and optical data storage and retrieval systems.
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Meniscus lenses are designed to minimize spherical aberration producing a minimum focal spot size for incoming collimated light.
In addition to the standard focal lengths listed below, II-VI maintains an extensive inventory of test plates and tooling, resulting in no additional tooling charges for focal length fabrication.
Besides the plano-convex, meniscus, and aspheric lens shapes offered in this catalog, II-VI routinely fabricates biconvex and negative focal length lenses upon request. Our in-house optical engineers can design the component or optical system which provides the exact performance you require. Please contact our sales and engineering staff for a quotation.
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We offer a selection of very precise cylindrical lenses, both positive and negative, in glass and fused silica. These lenses are well suited for applications which require magnification in one dimension only. Examples include energy collection for linear detectors or for coupling to a slit input, source generation for barcode scanners, circularization of diode laser outputs, one-dimensional image compression, and other similar applications.
Cylindrical lenses are more difficult to manufacture than spherical lenses but we take great care to ensure that the lens power is confined to a single axis and that the lenses are tightly specified so that you can use them with confidence in a complex imaging system.The lenses we offer here represent some of the more general requirements of our customers. But please call if you need a different shape or size. The lenses are uncoated but our standard coatings may be applied by choice of the appropriate coating suffix.
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We offer a selection of high precision cylindrical lenses, both positive and negative, in glass and fused silica. These lenses are well suited for applications which require magnification in one dimension only. Examples include energy collection for linear detectors or for coupling to a slit input, source generation for barcode scanners, circularization of diode laser outputs, one-dimensional image compression, and other similar applications.
Cylindrical lenses are more difficult to manufacture than spherical lenses but we take great care to ensure that the lens power is confined to a single axis and that the lenses are tightly specified so that you can use them with confidence in a complex imaging system. The lenses we offer here represent some of the more general requirements of our customers. But please call if you need a different shape or size. The lenses are uncoated but our standard anti-reflection coatings are available for these lenses.
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Plano-convex lenses, the most economical transmissive focusing elements available, are ideally suited for laser heat treating, welding, cutting, and infrared radiation collection where spot size or image quality is not critical. They are also the economical choice in high f-number, diffraction limited systems where lens shape has virtually no effect on system performance.
For proper performance with a plano-convex lens, the curved surface should face toward the incoming collimated beam or the longer conjugate distance (the object and image distances together are referred to as the conjugate distance).
In addition to the standard focal lengths listed here, II-VI maintains an extensive inventory of test plates and tooling. This enables fabrication of many other focal lengths without additional tooling charges.
Besides the plano-convex, meniscus, and aspheric lens shapes offered in this catalog, II-VI routinely fabricates biconvex and negative focal length lenses upon request. Our in-house optical engineers can design the component or optical system which provides the exact performance you require.
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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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New BGA Lens MX-BGAZ II:
Normal mode and wide mode
Zoom ring for adjusting magnification, focus ring and wide focus.
Option: Backlight arm
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Achromatic doublets are far superior to simple lenses because they are corrected for two color lines, specifically C(656.27nm) and F(486.13nm). Focal length is specified for the D line (589.3nm) in an air medium with parallel incident light. Air spaced achromats may be used where even greater correction is required. Because of their superior optical quality, ROLYN Achromats may be used in microscopes, telescopes, magnifiers, eyepieces and many other scientific instruments.
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Acylindric lenses is a group of cylindrical lenses having a surface with departure from pure radius in order to minimize aberrations in a specific application.
We are offering :
Finite conjugate acylindric lenses
Infinite conjugate acylindric lens with window
Infinite conjugate acylindric meniscus lens
Infinite conjugate plano-convex acylindric lens
Infinite conjugate double-convex acylindric lens
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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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Ball lenses are highly polished spheres made of optically transparent homogeneous materials. Carefully controlled manufacturing process produces spheres with precise diameters and unsurpassed surface quality. Numerical aperture of ball lenses is proportional to their refractive index. These lenses are used in visible and near infrared spectrum. The ball lenses could be equatorially ground relative to direction of optical axis to facilitate packaging and orient AR coating. The round cross-section of these lenses results in the large field of view and simple, cost-effective alignment where most of the positioning errors result in simple focusing errors.
These lenses can be used as fiber-optics collimators. In order to accommodate different fiber-arrays pitch, the edge of the lens may be ground to a desired width.
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Ball Lenses
Ball lenses are used for various tasks such as improving the coupling between optical fibers and the emitters or detectors they interface with. Standard size lenses range from 1.0mm to 5.0mm. Custom-made sizes or special materials are also available. All Ball Lenses can be ordered with full-surface anti-reflection (AR) coating..
The effective focal length of a ball lens is given by the following formula:
BFL = F – D/2 and EFL = nD/4(n-1)
The Numerical Aperture, NA, of a ball lens is dependent on the focal length of the ball and on the input diameter, d.
NA = 2d(n-1)/nD
Specifications
Material: BK7 grade A optical glass
Diameter tolerance: ±0.005mm
Sphericity: ±0.003mm
Surface Quality: 40/20
Coating: none
Drum Lenses
A Drum Lens is a variation of a ball lens where a portion of the ball is ground down to a smaller diameter. These lenses are used in similar applications to those of ball lenses. The drum lens adds the ability to handle and package it in a different way.
Specifications
Material: BK7 grade A optical glass
Diameter tolerance: +0.0/-0.05mm
Length: ±0.005mm
Surface Quality: 40/20
Coating: none
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To cope with the increasing demand of enviromental friendly optical glasses suitable for precision molding processes SCHOTT has extended its glass portfolio and has identified several low transformation temperature glasses that are suitable for precision molding.
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- High numerical aperture for maximum collection efficiency
- Compact, single lens design
- Diffraction limited performance
- Molded Black Diamond™ Infrared Lens
- RoHS Compliant
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Axicons are optical components with at least one conical surface. It is possible to have different combinations of concave or convex conical surfaces on one side with plano or spherical surfaces on the other side, i.e., plano-convex, plano-concave, double convex, etc.
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Two axicones together will produce a thick-walled hollow "pipe" of light
An axicone followed by a spherical lens will produce an annular focus
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Cut-ball microlenses are made from ball lenses and are widely used in endoscopy and microscopic applications. When complemented with glass spacers of appropriate thickness, cut-ball microlenses become excellent fiber optic collimators.
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When illuminated sideways, these cut-rods act as cylindrical lenses whose NA is proportional to their diameter and their and refractive index. The lenses can be used in the visible and near infrared spectrum.
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These patented gradient-index cylindrical microlenses with Luneburg type refractive index distribution are drawn from a highly polished gradient-index fiber preform. A simple tuning of the drawing process produces diffraction-limited microlenses in the shape of fibers or rods with precise diameters and unsurpassed surface quality. When illuminated sideways, these fibers act as perfect cylindrical lenses with 0.5 NA. The fused silica cladding and the gradient-index core of these lenses withstand very high temperatures (transition temperature is ≈1100°C). The lenses can be used in visible and near infra red spectrum.
The rods or fibers are cut to desired length. The round cross-section of these lenses results in the large field of view and simple, cost-effective alignment with the laser diodes where most of the positioning errors result in simple focusing errors. This leads to effective "best focus" search beneficial for automated or manual positioning.
These lenses could be used either as fast-axis collimators for single laser diodes or for building cylindrical lens arrays for laser diode bars. In order to accommodate a small emitter pitch, the edge of the lens may be ground to a desired width.
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A cylinder is a surface that is circular in one direction and flat in the orthogonal direction. A cylindrical optic has one or more cylindrical surfaces. Cylindrical optics are used in medical instruments, graphic arts, laser printers, and semiconductor processing equipment.
Optimax uses several interferometric techniques including plano reference flats, spherical transmission lenses, and diffractive optical elements to verify the plano axis and power axis of the optic.
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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GRADIUM® lenses are made from LightPath's proprietary axial gradient index glass. Its unique refractive qualities can be exploited to reduce spherical aberrations - resulting in performance similar to single term aspheres. GRADIUM® lenses provide a cost-effective solution for many high-performance applications.
Ideal for high power applications, GRADIUM® lenses and their gradient-index structure often allow a GRADIUM® singlet to replace a conventional spherical doublet. GRADIUM® lenses can be custom designed for visible or near infrared applications in diameters from 5mm to over 100mm. GRADIUM® doublets are also available for better achromatic performance and can equal the performance of conventional triplets.
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In addition, our range of products also comprises lens systems for focusing or collimating of infrared lasers.
These IR lens systems are specifically optimized for wavelengths of 1.5 µm - coatings for other wavelengths are available on request.
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