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What is aFresnellens used for

SPFL 532 lasers offer high pulse repetition rates (up to 2 MHz with PRF on-the-fly), tunable short pulse durations (down to 3 nsec) and high peak power to enable high system throughput for maximum process efficiency. Combined with its pulse-on-demand capabilities the SPFL 532 brings remarkable agility and flexibility to the most demanding of applications.

Fresnelpronunciation

Enclosed in a robust yet compact assembly that meets industrial standards and fitted with metal armored fiber cable, the ultra-flexible SPFL 532 lasers deliver a compelling combination of quality, reliability and performance.

Part Number Suggested Replacement Model SPFL 532-10 Talon GR20 SPFL 532-20 Talon GR20 or GR40 (For low/high rep rate applications) SPFL 532-40 Talon GR40 or GR70 (For low/high rep rate applications)

The first Fresnel lenses were made by tediously grinding and polishing glass by hand. Eventually, molten glass was poured into molds, but it was only with the development of optical-quality plastics and injection-molding technology in the 20th-century that the use of Fresnel lenses in many industrial and commercial applications became practical.

FresnelLight

To verify and analyze the output power of your SPFL 532 laser, we recommend the Ophir F80(120)A-CM-17 (7Z07103) thermal power sensor and Centauri laser power meter. Additional information on this laser measurement equipment can be found on the ophiropt.com website. Other Ophir sensors and meters may also be suitable for the SPFL 532, depending on application. Ophir also works with laser system developers to achieve embedded beam diagnostics to monitor system performance as an OEM solution.

Fresnellens

While commonly found in solar applications, Fresnel lenses are ideal for any application requiring inexpensive, thin, lightweight positive lens elements. Fresnel lenses are not new technology, but their pervasiveness has increased with improvements in manufacturing techniques and materials. Fresnel lenses are truly unique optical lenses which make them a great tool for a range of interesting and fun optical designs.

Fresnel lenses consist of a series of concentric grooves etched into plastic. Their thin, lightweight construction, availability in small as well as large sizes, and excellent light gathering ability make them useful in a variety of applications. Fresnel lenses are most often used in light gathering applications, such as condenser systems or emitter/detector setups. They can also be used as magnifiers or projection lenses in illumination systems, and image formulation.

FresnelSheet

Solar cell, silicon scribing and processing Glass Processing Marking Fine materials processing Micro-machining Scribing Thin film cutting Gold and copper processing Medical Entertainment and display Security and defense

Sorry, this family of products is no longer available. The replacement family of products is Talon® Diode-Pumped Solid State Q-Switched Lasers.

Another common application for a Fresnel lens is magnification. It can be used as a magnifier or projection lens; however, due to the high level of distortion, this is not recommended. Also, the image quality does not compare to that of a higher-precision system given the amount of distortion.

Fresnelprism

Spectra Physics’ SPFL 532 series of pulsed green fiber lasers (532 nm) incorporate cutting edge technology to provide top performance for such precision-intensive applications as those required for solar cell manufacturing, micro machining, silicon scribing, fine processing, glass processing, thin film cutting and more. The SPFL 532 lasers are comprised of linearly polarized Ytterbium fiber lasers in a smart and flexible MOPA configuration utilizing a second harmonic generation (SHG) module to provide an output power of up to 40 W with a near-diffraction-limited output beam in the green wavelength.

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While French physicist Augustin-Jean Fresnel (1788 - 1827) was not the first to conceptualize a Fresnel lens, he was able to popularize it by integrating it into lighthouses. Since then, Fresnel lenses have been utilized in a variety of applications, from light collimation and light collection to magnification.

A Fresnel (pronounced fray-NEL) lens replaces the curved surface of a conventional optical lens with a series of concentric grooves. These contours act as individual refracting surfaces, bending parallel light rays to a common focal length (Figure 1). As a result, a Fresnel lens, while physically narrow in profile, is capable of focusing light similar to a conventional optical lens but has several advantages over its thicker counterpart.

Product Replacement Options MKS encourages customers to contact your local sales representative to discuss replacement options. Below is a list of suggested replacement lasers: Part Number Suggested Replacement Model SPFL 532-10 Talon GR20 SPFL 532-20 Talon GR20 or GR40 (For low/high rep rate applications) SPFL 532-40 Talon GR40 or GR70 (For low/high rep rate applications) High Pulse Repetition Rate With Tunable Short Pulse Width For Fine Material Processing

How does aFresnellens work

To take advantage of this physical property, 18th-century physicists began experimenting with the creation of what is known today as a Fresnel lens. At that time, grooves were cut into a piece of glass in order to create annular rings of a curved profile. This curved profile, when extruded, formed a conventional, curved lens – either spherical or aspherical (Figure 2). Due to this similar optical property compared to a conventional optical lens, a Fresnel lens can offer slightly better focusing performance, depending upon the application. In addition, high groove density allows higher quality images, while low groove density yields better efficiency (as needed in light gathering applications). However, it is important to note that when high precision imaging is required, conventional singlet, doublet, or aspheric optical lenses are still best.

One of the most common applications for a Fresnel lens is the collection of solar light, which is considered very nearly parallel (an infinite-conjugate system). Using a Fresnel lens for light collection is ideal for concentrating light onto a photovoltaic cell or to heat a surface. For example, a Fresnel lens can be used for popular home maintenance such as heating a home or pool! In these cases, the overall surface area of the lens determines the amount of collected light.

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Fresnelglasses

A Fresnel lens can easily collimate a point source by placing it one focal length away from the source. In a finite-conjugate system, the grooved side of the Fresnel lens should face the longer conjugate (Figures 3 - 4) because this produces the best performance.

The driving principle behind the conception of a Fresnel lens is that the direction of propagation of light does not change within a medium (unless scattered). Instead, light rays are only deviated at the surfaces of a medium. As a result, the bulk of the material in the center of a lens serves only to increase the amount of weight and absorption within the system.

Fresnel lenses can be manufactured from a variety of substrates. They are manufactured from acrylic to polycarbonate to vinyl, depending on the desired wavelength of operation. Acrylic is the most common substrate due to its high transmittance in the visible and ultraviolet (UV) regions, but polycarbonate is the substrate of choice in harsh environments due to its resistance to impact and high temperature.

The SPFL 532 lasers are comprised of linearly polarized Ytterbium fiber lasers in a smart and flexible MOPA configuration utilizing a second harmonic generation (SHG) module to provide an output power of up to 40 W with a near-diffraction-limited output beam in the green wavelength.

Product Replacement Options MKS encourages customers to contact your local sales representative to discuss replacement options. Below is a list of suggested replacement lasers:

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