Scientific Laboratory Instruments, Optics, and Photonics

Fiber optics or optical fiber refers to the medium and the technology associated with the transmission of information as the light pulses along a glass or plastic strand or fiber. The central core to the fiber is surrounded by a cladding and a protective coating. Ones the light is injected into the core it remains trapped into it until emerged from the opposite end; this is because the cladding has a slightly higher index of refraction than the core. The sensors, illuminators, and toys make use of inexpensive plastic fibers. The environment that requires electrical isolation or protection from the elements uses fiber coupled LED . Coupling of Optical Fibers to LEDs and Sensors Although many fiber couplers are available for various LEDs and light sensors one can connect silica and plastic fibers directly to LEDs and sensors. Here are different methods used to produce fiber coupled LED and sensors. Preparing the Fiber Ends To obtain the best results use the plast...

Lenses come with many aberrations like chromatic aberration and spherical aberration. To reduce aberrations and to increase the performance of your system it is important to choose a lens with a right design and correct multi-element systems. Thorlabs provides a high-quality optical material with the substrate and anti-reflection coating of a different wavelength. Spherical Singlets It is a preferable choice for many applications where aberration is not a great concern. The various singlet design of collimating lens Thorlabs are Plano-Convex, Bi-Convex, Plano-Concave, and Bi-Concave. These lenses are used for the wide application. Plano-Convex Lenses These lenses are used where the object or image distance is more than five times the other. Plano-convex lens of the Thorlabs performs best for collimating a point source or for focusing collimated light. These lenses are subjected to some aberration that reduces a multi-element system. Bi-Convex Lenses It...

Ball lenses are an optical component used for improving coupling between fibers, emitters, and detectors and for coupling and collimating in the range of 0.5 to 5mm in diameter. They are also used in endoscopy, barcode scanning, and sensor applications. Ball lens of Thorlabs are prepared using a single substrate of glass and is used for collimating light. The collimation of light depends on the geometry of input sources. The most important factor that is used to determine the performance of the ball lens is the numerical aperture. This is because of the spherical aberration of the ball lens in proportion to the cube of numerical aperture. This limits the use of ball lens for the use with fibers having a numerical aperture of 0.2 or less. Following parameters are used to defines the application of ball lens: •          The diameter of the input source •          The diameter of the b...

Halogen has been used as the light source for decades and is chosen as the source of illumination for varieties of imaging modalities. But now LEDs is gaining popularity in the marketplace and increasingly becoming a preferred choice for a light source in various optical instruments due to its many advantages. Before comparing the characteristics of both light source, have a look on the how halogen and LED lamps produces light. Halogen Lights Halogen light source is similar to incandescent bulbs. It consists of tungsten filament surrounded by quartz envelope filled with an inert gas that makes it preferable for the use in a microscope for bright field and phase contrast microscope. With the supply of electricity, tungsten begins to glow just as within the incandescent bulb. As tungsten glows it begins to evaporate, giving off tungsten atoms. This lowers the brightness of the lamp with time. The gas present inside the lamp reacts with the tungsten vapors and recoats it...

The laser is amazing light beams that are powerful enough to zoom miles into the sky or cut the lumps of metal. Nowadays the lasers are found in a dazzling range of products and technologies, including CD and DVD players, metal-cutting machines, measuring systems, laser printers, barcode scanners, in the eye and cosmetic surgery. Even our clothes are cut with lasers; we send and receive emails over the internet with the signals that lasers fire down fiber-optic cables. The wide application of laser has results in the manufacture of laser crystal product that are used in optics study. How is laser created? The laser beam is created when the electrons in atoms in special glasses, crystals, or gases absorb energy from an electrical current or another laser and jump to higher energy orbit on excitation. When the excited electrons return back to their ground state they emit energy in the form of photons (particles of light). Unlike normal light, the photons of laser light hav...

Our multi-wavelength fiber-coupled LED source, work in continuous, pulse and external trigger mode. The light source used is a high-quality lamp. It is efficient in heat treatment and reliable circuit designs. Also, the light source employs fan that dissipates the heat. The apparatus is able to maintain a stable output light power. The high-intensity continuous light in continuous mode and pulsed light with adjustable frequency in pulse mode supports 0 to 100% continuous linear regulation of output light intensity . You can control the working frequency, intensity ratio, and duty cycle in external trigger mode using the USB interface. Features of Fiber-Coupled LED Source • Multi-wavelength ranging from 350 to 800 nm. • Stable output light power • Continuous or pulse output, with adjustable frequency and intensity • Uses USB interface for external trigger • Compact design • High reliability Benefits of our Fiber-Coupled LED Source • Our fiber coupled ...

Integrating sphere is a device used to measure radiant flux. The flux is then carefully monitored either directly or when it comes in contact with a sample. One of the key applications of integrating sphere labsphere is measuring transmittance or reflectance through scattering or diffuse materials. There are more applications, learn about them below: Radiometer and photometer Integrating sphere labsphere when combined with a photodetector which is of the correct spectral response is utilized to calculate the gross geometric flux coming out of a light source. Flux density too of the illuminated areas can be calculated. It is the spectral properties of the light source which helps in deciding the right photodetection system. This is the first application. The Sphere Photometer By far the oldest of all the applications of integrating sphere is counting gross of geometric luminous flux from electric lamps. This method began towards the beginning of the 20 th...

LEDs are the first preference of fiber illumination sources. These have taken place of lasers and arc lamps. The latter two have too many adverse effects associated with them. This doesn’t happen with fiber-coupled LEDs. They have numerous applications in research, educational and scientific world. Why pick Kewlab Fiber coupled LED They are less expensive and are more trustworthy in terms of durability and longevity. Latest fiber coupled LEDs provide a higher level of intensity of light. One such example is >25mW blue light through a 200 micron fiber. Here are the other features of Kewlab LED you should have a look at. The Applications    Kewlab Fiber coupled LED can be utilized for •Transmission/Reflectivity measurement •Spectral analysis and absorption spectrum measurement •Color measurement •Spectral analysis and absorption spectrum measurement •Fluorescence measurement This doesn’t end here: Kewlab Fiber coupled LED has more to offer: It has ...