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Window Type:

Window Shape:

Diameter, Square Side, or Rectangular Length:

Rectangular Width:

Thickness:

Wedged or Parallel?:

Parallelism or Wedge Angle:

Wavelength Range:

Materials:

Coating:

Surface Quality:

Surface Flatness:

Help with Optical Windows specifications:

Window Type
          Windows are either plane or Brewster.
   Your choices are...         
   Plane Windows       Plane Windows can come wedged or parallel and are designed to have the incident light come perpendicular to the window surface. 
   Brewster Windows       Brewster windows are used in optical systems at Brewster's Angle; the angle at which p-polarized light suffers no reflection loss. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Window Geometry
   Window Shape:      Windows can either come round, square, or rectangular.
   Your choices are...         
   Circular       The window is circular shaped. 
   Square       The window is square shaped. 
   Rectangular       The window is rectangular shaped. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Diameter, Square Side, or Rectangular Length:       If the window is circular, the diameter. If the window is square, the length of a side. If the window is rectangular, the length of its largest side. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Rectangular Width:       If the window is rectangular, the length of its shorter side. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Thickness:       The thickness of the window. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Wedged or Parallel?      A window can come either wedged or parallel.
   Your choices are...         
   Wedged       A problem with parallel substrates is that the second surface reflection can lead to unwanted spectral channeling. Reflections from the surface of the wedge are not parallel and also slightly separated. 
   Parallel       The window is not wedged. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Parallelism or Wedge Angle:       If the window is parallel, then the parallelism in arc minutes. If the window is wedged, then the wedge angle in arc minutes. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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Wavelength Range
   Wavelength Range:       The wavelength range, also known as the spectral range of the optical window. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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Window Material
   Materials:      Materials are used for applications in a particular area of the spectrum or for a wide transmission bandpass.
   Your choices are...         
   Beryllium       Beryllium is a lightweight metal with an atomic number of 4. Beryllium is a useful x-ray window material because of Be's low atomic number and low absorption of x-rays from heavier elements. Beryllium is also a useful window material for particle colliders because the low atomic number provides transparency to energetic particles. 
   BK7 Glass       BK7 is boro-crown glass (borosilicate glass). A glass with an Abbe v-value of 64. It generally has an index of refraction of 1.51. 
   Crown Glass       One of the two principal types of optical glass, the other being flint glass. Crown glass is harder than flint glass, and has a lower index of refraction and lower dispersion. A glass with an Abbe v-value larger than 50 or 55, depending on its index. It generally has an index of refraction of 1.495-1.54. 
   Calcium Fluoride       Calcium Fluoride windows exhibit excellent transmission from 150nm through 7000nm. 
   Germanium       Germanium windows exhibit excellent transmission in the infrared from 2000nm to 4000nm. 
   Photonics DIAMOND       Photonics DIAMONDTM is CVD-Grown at high temperature in a microwave reactor, with the structural properties of fine grain polycrystalline diamond. 
   Sapphire       Sapphire has a very broad transmission range extending from 150 nm to 6000nm. Its great hardness and resistance to chemical attack and thermal shock allow it to be used in environments where other less costly components would not be suitable. 
   Plastic / Polymer       Polymer or plastic windows manufactured from organic or synthetic thermoplastic or thermosetting resins. Generally plastic optics are cheaper than glass optics. Plastic optics can be molded or molded and then machined, ground and polished. Thermoset ADC is a clear hard plastic that has good transmission properties and is resistant to most solvents. 
   UV Grade Fused Silica       UV grade fused silica offer improved transmission in the ultraviolet region compared with crown glass. 
   Zinc Selenide       Zinc Selenide exhibits excellent transmission from .69μm to 18μm. 
   Specialty / Other       Any other non-glass window material. 
   Search Logic:      Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Window Features
   Coating:      Some windows are coated to increase transmission of light at the lens-air interface.
   Your choices are...         
   None       Window has no coating. 
   Antireflective       Window has an antireflective coating. 
   Conductive         
   Search Logic:      Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Window Surface
   Surface Quality:      Surface quality of the window glass.
   Your choices are...         
   10-5 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 10 / 5 indicates the average diameter of the digs to be .05 mm and the average length of a scratch is .10 mm. 
   20-10 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 20 / 10 indicates the average diameter of the digs to be .10 mm and the average length of a scratch is .20 mm. 
   40-20 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 40 / 20 indicates the average diameter of the digs to be .20 mm and the average length of a scratch is .40 mm. 
   60-40 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 60 / 40 indicates the average diameter of the digs to be .40 mm and the average length of a scratch is .60 mm. 
   80-50 Scratch / Dig       A dig is a defect on a polished optical surface that is nearly equal in terms of its length and width. A scratch is a defect on a polished optical surface whose length is many times its width. 80 / 50 indicates the average diameter of the digs to be .50 mm and the average length of a scratch is .80 mm. 
   Other       Any other Scratch / Dig surface quality rating. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Surface Flatness:      The surface flatness of the window, given in terms of λ(λ=633nm).
   Your choices are...         
   λ/2       The biggest variation in surface height for the window is no more than λ/2 (λ=633nm). 
   λ/4       The biggest variation in surface height for the window is no more than λ/4 (λ=633nm). 
   λ/5       The biggest variation in surface height for the window is no more than λ/5 (λ=633nm). 
   λ/8       The biggest variation in surface height for the window is no more than λ/8 (λ=633nm). 
   λ/10       The biggest variation in surface height for the window is no more than λ/10 (λ=633nm). 
   λ/20       The biggest variation in surface height for the window is no more than λ/20 (λ=633nm). 
   Other       Any other surface flatness in terms of λ(λ=633nm). 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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