Scientific Laboratory Instruments, Optics, and Photonics

Integrating Sphere system fulfills two important parts; one for measuring and analysis and other is the assistant part that provides testing environmental. While choosing an integrating sphere always consider the size of the lamp, type of lamp and the reflectance material used in the sphere. Most of the integrating sphere comes with some additional interchangeable features for the light source, assemblies, and post reducers. This makes it perfect for the use of various applications. Integrating sphere from Labsphere is perfectly designed having a port frame, easy access mounting options, and quick change accessory options. This design meets your maximum requirements. Size of the integrating sphere: The diameter of the integrating sphere ranges from several centimeters to several meters. The lighting industry uses the integrating sphere of the size from 0.3 m to 4 m. The sphere of size 0.3m to 0.5 m is used to test single LED whole of size 1 m is used to test LED bulb, ...

LED has a small protective dome over the diode that is commonly known as the primary optic that serves to protect and shape the output of the small diode. But light from the primary optic of the LED is broad for most application and lacks intensity for long distance. To reduce this drawback LED fixtures use secondary fixtures like collimating lens from Thorlabs or other labs, reflectors, TIR optics etc that collects light and magnifies its intensity towards the target. If you wish to create lenses and reflectors for LEDs, then you need to use some logical ways apart from just scaling them down from the light source. This is because LED has much smaller form factors than other light sources and also differs in the way it emits light . Use of collimating lens in LED          The collimating lens of the LED undergoes the process of Total Internal Reflection or TIR. TIR is defined as the complete reflection of a ray of light within a medi...

Different types of parabolic, spherical, and flat mirrors are produced having different types of mirror substrates . These products have a variety of metallic and dielectric coatings that make them suitable for various applications. The various types of mirror coatings include Protected Aluminum, Enhanced Aluminum, UV Enhanced Aluminum, Bare Gold, and Protected Gold etc that are used for visible applications. UV and DUV enhanced aluminum is used for UV and visible applications while Bare and Protected Gold offer high reflectance for near Infrared and Infrared Wavelength. First Surface and Second Surface Mirrors All the mirrors you use are first surface mirrors. This mirror has a high reflectance coating deposited on the front surface of a variety of different types of glass, metal or semiconductor substrates. The other surface of the mirror may be clear or ground and the mirror is oriented so that the coating faces the source. They are widely used in precision optics ap...

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...

Laboratories that are concerned with quantitative analysis require stringent calibration of scales. Nowadays, modern scales are used, whose precision is largely dependent on the accuracy of calibration weight in the United States. The accuracy of the scale depends on the grades of stainless steel and other contributing factors. There are different classes of calibrated weight which is defined by the International Organization of Legal Metrology (OIML) These calibration weight is available with certificates in the United States . Class E1: These weights are the highest accuracy class, and are intended to use for traceability between national mass standards and OIML class E2 weight and lower. The maximal permissible error from the nominal value at 1 kg is ±0.5 mg. This class of calibration weight is used as primary laboratory reference standard in the United States . Class E2: Weights that are intended for use in the verification or calibration of class F1 weights an...

Integrating sphere is a versatile optical element that has multiple Lambertian reflections at the inner surface. This reflection results in the homogenous distribution of optical radiation. The radiation source located in two locations; either inside the sphere or in front of the source’s entrance port. Properties of integrating sphere The irradiance of the integrating sphere labsphere is proportional to the total radiant power emitted either by the source inside the sphere or by the one located at the entrance port. The irradiance level does not depend on the geometrical and directional distribution of the primary source if direct illumination of the respective location is prevented. This property makes the instrument useful optical element for the detection of radiant power. The radiance reflected from the inner surface of the sphere and shielded from the direct illumination, is constant in its directional distribution and independent of the specific location wher...

Fused Silica is the highly pure, non-crystalline material and is the most preferable choice for making mirror substrate, high performance lens, and simple stable tool. It has many benefits that make it a priority choice among the users. Some of the benefits of Fused Silica are: Range of Transmission: A fused silica produces the high throughput over a wide range of the spectrum. A standard UV fused silica transmits more than 90% in the wavelength range of 200nm to 2 microns with the least deviation at 1.4-micron wavelength. The IR grade fused silica achieves more than 90% transmission within the wavelength of 200 nm to 3.5 microns. Other fused silica varieties allow the transmission in the high-power semiconductor, extreme UV region of 248 nm and 193 nm due to the presence of some impurities.  Fused Silica is the most superior and versatile glass material as its transmission range lies within the limit of most of the optical glasses. Low Thermal Expansion ...

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 ...

When one employs an integrating sphere labsphere for measuring optical power, you remove all the hassles faced with direct coupling method. But one must not forget that there are certain things about the integrating sphere you must know. Read on to learn about those things… You must pay attention to the internal reflectance The internal surface of the sphere should be highly reflective and at a wavelength of light which is to be measured. This only will ascertain the right measurements. Old integrating spheres were made up of two hollow hemispheres. The inner surface is usually given a coat of material which reflects wavelength of interest and eventually diffuses the input light. Coating used is sensitive to environment changes such as atmospheric conditions: bases, acids and vacuum). The integrating sphere labsphere must be coated every year. Calibrate detector and weight together  The distinct feature of any sphere and detector is completely specific to ...

Halogen light source s have come a long way from a traditional light bulb to a high precision lamp. Halogen bulbs derive their name from the halogen gas filled inside the lamp casing which houses the tungsten filament. Here are the different types of halogen light sources used in spectrophotometry: Deuterium lamp It is also known as D2 lamp. The wavelength range varies from 190nm – 370nm. A normal glass exterior is not suitable due to its high temperature condition. Hence quartz or some other material is used. A deuterium lamp can live up to 1000 hours. A deuterium lamp is made with halogen lamps in an UV/VIS spectrophotometer. This will aid in canvassing the whole visible and UV light wavelength. Deuterium lamp is a good source of ultraviolet light for analytical instruments, liquid chromatography detectors, pollution analyzers, medical analyzers, densitometers, and colorimeters. They are well suited for secondary calibration standards in the UV region. Halog...

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...