Basic facts about magnifiers - magnifier power
Lasers have transformed many industrial sectors thanks to their precision, versatility and efficiency. Their use has become generalized and diversified. From a technical point of view, these processes require the use of a laser beam to alter the surface of various materials.
A fly’s eye array consists of individual square or rectangular microlenses mounted on a substrate in a close-packed, no-gaps configuration. A typical array will have 7-11 channels in each direction, optically overlapped in the illumination plane. The surface of the microlenses may be either anamorphic or spherical.
GRIN lens
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Secondly, the laser beam is coherent. In other words, the light waves are perfectly synchronized, all having the same frequency and moving in phase. This temporal and spatial coherence ensures high precision and concentration of energy at a precise point.
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ThorlabsMicrolens Array
Square microlens arrays are primarily used for beam homogenization and shaping. Their very high fill factor (up to 98%) essentially eliminates zero order hot spots in the illuminated field. A standard square microlens is 10mm x 10mm configuration, although we can provide custom sizes upon request. A variety of focal length and lens pitch options are also available.
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Finally, the laser beam is collimated. It is highly directional, with light beams running parallel to each other and propagating in a single direction. It is this characteristic that gives the laser its range and its ability to remain focused over long distances.
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Photolightographic techniques and semiconductor processing technology allow us to produce precisely positioned arrays with very accurate shaping of the lens profile. We can work with you to produce custom microlens arrays according to your specifications, and our experienced design team is able to provide consultation and design help as needed. Our many years of experience, coupled with state of the art equipment, allow us to produce high quality optics to almost any specification.
Powerphotonic
Fresnel lens
When choosing a laser engraver, it’s essential to understand the different technologies available. Lasers can be classified according to their laser class (depending on installation configurations and safety risks), but also by laser type.
The laser beam has three main characteristics. Firstly, it is monochromatic. This means that its light consists of a single color, determined by a single wavelength. This wavelength depends on the laser environment, i.e. the material in which the light is emitted.
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Cylindrical lensarray
Fiber lasers are characterized by their use of optical fibers as the active environment. These lasers offer remarkable energy efficiency and high precision, making them a preferred choice for industrial and medical applications. One of the main advantages of fiber lasers is their ability to generate high-quality beams with excellent stability. This technology also makes it possible to perform complex operations such as precise marking, while minimizing energy losses. Fiber lasers are particularly appreciated for their robustness and extended service life, thanks to the use of robust, durable optical fibers. What’s more, their compact design and low maintenance requirements make them ideal for integration into a variety of industrial systems. Fiber lasers are therefore commonly used in sectors such as micromachining, laser engraving, materials processing and high-precision medical applications.
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Gas lasers are a category of lasers whose active environment is a gas. They can be made up of different types of gas, such as carbon dioxide (CO2), argon or neon. These lasers were discovered almost simultaneously with solid-state lasers, with major discoveries in the infrared (CO2 laser) and visible (helium-neon laser).
Microlens arrays are rigid arrangements of very tiny lenses, each with a diameter of less than 10 millimeters. These arrays may be one or two dimensional, and are mounted in a regular pattern on a supporting substrate. The microlenses themselves may be circular, square, or hexagonal, and the array may be square, hexagonal, or some other geometric shape. Microlens arrays are used in optical microscopes and light fields cameras, on CCD arrays, and for 3D imaging and displays, fiber coupling, optical sensors and LIDAR systems.
Microlens
These arrays are particularly useful in tailor-made applications such as beam shaping, beam homogenization, fiber coupling, and 3D imaging. They also play crucial roles in fields including medical devices, wavefront sensors, optical communication, laser optics, and metrology. The versatility of microstructure lens arrays ensures their valuable presence in an array of cutting-edge technologies and industries, contributing to advancements and improvements in various optical systems.
When a pair of fly’s eye arrays is used in combination with a condenser lens they can provide uniform irradiance at the illumination plane. When set up in this configuration the first array is called the objective array, and the second the field array.
Microlens arrays offer large field of view angles, high temporal resolution, low aberration and distortion, and infinite depth of field, making them ideal for 3D imaging and other optical applications requiring non-Gaussian uniformity and high efficiency. For instance, in digital projectors, microlens arrays focus light onto the LCD’s active area to generate bright, crisp images. We’ve developed a novel LED pico-projector design incorporating a special array of 45 microlenses aligned on the display cover glass, resulting in a highly compact yet robust projector.
Find my solutionWhich sector ?Select a sectorMetallurgyOther sectorsAeronauticsAutomotiveEnergyMedical Which use ? Select a useIntegrated usePortable useStation use Which material? Select a materialMarking and engraving on steelTitanium and titanium alloyNickel and nickel base alloyPainted and chromed steelBronzeCarbidePlastic engraving and markingMarking and engraving on stainless steelMarking and engraving on aluminiumMarking and engraving on brass Which marking type? Select a marking typeLogo marking and engravingTime stamping markingDatamatrix and 2D code markingAlphanumeric markingVIN number marking Which technology? Select a technologyDot peen markingLaser marking
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The world of lasers is wide and complex, with a multitude of types on the market. The most common are fiber, CO2, gas and semiconductor lasers. Their uses vary, from marking and cutting to medical applications. Each type of laser has specific properties, determined by the wavelength of its beam and the amplification environment.
VCSELarray
All in all, these specific characteristics make diode lasers the preferred choice for many applications, whether industrial, medical or communications.
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According to the homogenization principle, a laser beam passes through each individual microlens, effectively homogenizing the beam and resulting in a uniform and consistent output. This uniformity ensures more precise and reliable optical performance, making them particularly beneficial in various applications.
Alexandrite lasers have several distinctive features. Their wavelength is 755 nm, enabling them to precisely target the melanin present in hair. In addition, their mode of action is predominantly pulsed, although they can also operate in continuous mode.
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At Shanghai Optics, we produce both 1- and 2-dimensional arrays in various configurations, sizes, and focal lengths. These arrays are manufactured from high-quality fused silica, ensuring optimal performance ranging from 193 nm to 2.5 micrometers. The index of refraction of these arrays is 1.561 at 248 nm and 1.444 at 1550 nm.
In terms of applications, gas lasers offer a wide variety of uses. In particular, they are used in materials processing and surgery, thanks to their ability to deliver high levels of power. They are also used in laser marking and bar code reading.
In a digital projector, microlens arrays can be used to focus light on to the active area of the LCD to generate the image which will be projected. A novel design for a LED pico-projector involves using a special array of 45 microlenses aligned on the display coverglass. The use of a microlens array in this projector design allows the projector to be highly compact and robust while still being capable of producing bright, crisp imagery.
Microstructure lens arrays excel in achieving a harmonized balance of customization and diversity, setting them apart from conventional optical components. Their unique ability to cater to specific customer requirements for beam patterns makes them indispensable in the field of optics. Beyond their fundamental functionalities of focusing and imaging, their small sub-lens sizes and high integration enable them to achieve effects unattainable by traditional optical elements. This pivotal characteristic has rendered them essential components in cutting-edge optical systems, playing a crucial role in the advancement of optical technology.
Diode lasers offer a number of distinctive features and benefits. Their main advantage is their energy efficiency: they convert electricity directly into light, thus reducing energy consumption and associated costs