Optics
Ealing offers a comprehensive range of optical components including optical filters, mirrors, beamsplitters, polarisers and optical coatings.
Shown on the following pages are a wide range of standard optics that will meet many of the more common requirements for laser and photonic applications. They have been designed and manufactured to meet the needs of researchers in lasers, photonics and development engineers and scientists.
Products
Introduction to Optics - theory & properties
Optics are commonly used in laser systems as well as a wide range of non-laser applications. Selection of the appropriate component is dependent on a number of factors. Laser optics must not only perform the required task but they must withstand illumination with, often high energy, laser radiation. Here we give you an introduction to optics theory & properties of optical materials.
MORE INFORMATIONLenses
Ealing produce lenses in a wide range of forms, materials and sizes. For visible wavelengths and infrared up to 2.5 microns, BK-7 glass is preferred. In the UV below 350 nm, fused silica or Calcium Fluoride is the best solution. Applications where there are excessive thermal conditions may require the use of sapphire lenses. Germanium and Zince Selenide are best suited to the Infrared above 2 microns.
MORE INFORMATIONBandpass Filters
Bandpass interference filters are available for a wide range of centre wavelengths (CWL) and bandwidths, specified as the "full width at half maximum" (FWHM), Narrower bandwidths naturally cause a lower transmission, but Ealing filters are designed to have the maximum possible peak transmission for a given pass.
MORE INFORMATIONOptical Filters
Asahi Spectra introduces a wide range of filters, including bandpass filters, Hg filters for Photolithography, fluorescence filters, and cold mirrors as well as Image quality filters for Astronomy.
MORE INFORMATIONNeutral Density Filters
Neutral density filters are used to control the intensity level without affecting the spectral response of the system. They are normally specified in terms of their optical density which is defined as the logarithm of the ratio of intensities in the incident and transmitted beams.
MORE INFORMATIONPhotolithography Filters
Asahi Spectra introduces the photolithography filters, including i-line bandpass filter and cold mirror.
MORE INFORMATIONColour Glass Filters
Colour glass filters are absorbing glass filters, and are the simplest form of colour filter. The transmission curves for each type of glass are well known and repeatable. Thickness of the filter defines the actual transmission. These filters are ground to a specified thickness and polished to produce a given spectral transmission.
MORE INFORMATIONShort & Long Pass Filters
Short and Long Pass Filters exhibit a sharp transition from a spectral region of attenuation to one of transmission. Because they attenuate by reflection, they can be used in either transmissive or reflective mode. The cut-on /cut-off wavelength (COWL) is the wavelength at which the transmission is 50% of its peak value.
MORE INFORMATIONMirrors
Ealing offers a range of mirrors in aluminium, gold and silver with a variety of coatings:
MORE INFORMATIONOptical Slits
Precision Optical Slits are commonly used for generating a line spread function, as entrance and exit slits in spectrophotometers and in a wide range of imaging and alignment applications.
MORE INFORMATIONPrecision Air Slits
Precision Air Slits are micro-machined from solid opaque material. They can be used in all the same applications as Optical Slits. Since they do not rely on transmission through glass they are not wavelength dependent. In addition there is no coating and hence no possibility of pinhole effects in high power applications. Ealing Precision Air Slits are individually micro-machined in a 9.5 mm diameter stainless steel disc.
MORE INFORMATIONPinholes
Ealing UV/Visible Laser Pinholes are specifically designed to work with most UV and visible lasers, such as Ar Ion, HeNe, or Kr. They are made from a specially developed molybdenum alloy, allowing for high power CW usage.
MORE INFORMATIONPrecision Pinholes
Precision Pinholes can be used in a wide variety of optical applications, including spatial filtering, creating point light sources, photography and Image analysis and processing.
MORE INFORMATIONPolarisers
Ealing offers a range of Sheet, Calcite, Glan Laser and Glan Taylor polarisers.
MORE INFORMATIONPrisms
Ealings extensive range of prisms comprise the following:- Laser quality right angle prisms, Laboratory quality right angle prisms, Equilateral prisms, Anamorphic prism pairs, Penta prisms, Dove prisms, Brewster prisms, Littrow prisms.
MORE INFORMATIONSoleil-Babinet Compensator
An instrument for precise determination of retardation over the wavelength range 200 - 2,700 nm.
MORE INFORMATIONWaveplates
Ealing offers a variety of waveplates, quarter and half waveplates, zero or multiple order available.
MORE INFORMATION