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OPTICS
Astro optics manufacturers a variety of custom made optical components containing spherical and plane surfaces.
Materials with which we have worked Type of products we make
Wide range of Optical glasses from Schott, Ohara and China
B270 Opthalmic glasses
Low expansion glasses like Fused silica, Pyrex, Duran, Zerodur
Metals like copper, aluminium, steel

Our optics are available with different kinds of THIN FILM COATINGS.
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Lenses
We make all kinds of lenses up to Ø200mm. Also available with anti-reflection coatings. Lenses can be also be mounted as required.
   
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Windows
Windows are optical elements having where both the surfaces are plane in nature. We can manufacture windows up to 200mm in size. Windows can be coated with anti-reflection coating which increases the transmission. They can be of general grade, just being optically polished or precision grade, with control on the parallelism and flatness. We can manufacture windows with parallelism of less than 5 seconds between the surfaces and with flatness up to lambda/10 depending on the size and thickness. We also supply windows as thin as 0.1mm.
 
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Prisms
Prisms play an important part in any optical system. Their main function is to deviate the beam of light in a different direction. They also considerably shorten the light path of an optical system and can invert and revert images, the reason for their being used in binoculars. They can break up the light into its constituent colors. They are available with anti-reflection coatings as well as other coatings as required. Prisms can be made to high degrees of angular accuracy.
   
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Mirrors
Mirrors are used for reflecting the light in optical systems. They are can be designed for either normal or oblique angles of incidence and can be partial reflectors or high reflectors. They can have one curved surface or both plane surfaces also. Telescope mirrors are examples of aluminum coated mirrors. Dielectric coated mirrors can be used with lasers and a variety of applications. 
   
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Beam splitters
  Beam splitters partially reflect / transmit the incident light. They are normally used at 45 degrees incidence. They split the laser beam in required R/T ratio. They can either be in plate form (like a window) or in cube form. Cube beam splitters have two right angled prisms of similar material cemented together. One of the prisms has the beam splitter coating on its hypotenuse.
   
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Filters
  Filters are used to "filter" out light, i.e. to separate out wavelengths. They can be similar to windows in size and shape. We manufacture filters of various types.
   
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Optical Flats
We make Optical flats up to lambda/10 accuracy from Pyrex or Fused Silica. 
   
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Laser Optics
We can manufacture laser optics with high damage threshold coatings as per customers requirements.
   
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Optical Assemblies
Optical assemblies are an integral part of any optical system. We have a fully equipped metal working shop including a CNC lathe machine from Hardinge, USA to give all kinds of optical mountings for our optics. We can make assemblies as per your specifications. Assemblies are done on Class 100 workstations in Class 10,000 clean room.
   
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Special Optics
Apart from all the above listed optics, there are many other things that we have worked on which do not fall under any standard category. Some of them are as follows:
  • Silicon Carbide substrates - Grinding and polishing of silicon carbide to a high degree of flatness and surface finish.
  • Cuvettes - We supply special cuvettes for use in milk meters. These have 2 components made from Pyrex. The tolerances on the thickness and the parallelism are 4-6 microns. One of the component also has precision drilled holes. We also supply 10 micron depth cuvettes for use in analytical instruments.
  • Quartz Wafers - We have successfully supplied 0.1 mm thick quartz wafers.
  • Domes - We have made quartz domes for radiometers.
  • Acrylic window polishing.
  • Photomask substrates.
  • Metal polishing.
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Products
Optics
Thin film coatings