Sapphire
Used as transparent barriers for sending and receiving light between two phases under varying conditions in temperature pressure chemical composition cleanliness and phase. Windows of synthetic optical sapphire crystal are highly abrasion-resistant with hardness approaching that of diamonds. The material allows transmission of light in the range from ultraviolet to near-infrared.
Uncoated Windows for 150 nm - 4.5 µm
Standard Specifications:
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Items
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Standard Precision
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High Precision
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Material
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Anisotropic crystalline synthetic sapphire
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Density
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3.98 g/cm3
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Refractive Index
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1.833 (265nm)
1.793 (365nm)
1.785 (405nm)
1.76 (630nm)
1.755 (1014nm)
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Diameter
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Ф 5 mm – Ф 50.8 mm
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Dimension Tolerance
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+0.0/-0.2 mm
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+0.0/-0.05mm
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Thickness Tolerance
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± 0.2 mm
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± 0.05mm
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Clear Aperture
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> 90%
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Parallelism
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< 3 arc minutes
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< 10 arc seconds
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Flatness
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λ at 632.8 nm
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λ/4 at 632.8 nm
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Surface Quality
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scratch and dig 60-40
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scratch and dig 40-20
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Bevel
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0.5 (0/-0.3) mm
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Right Angle Prisms
A right-angle prism is used as a mirror to deviate light through 90 degrees and also as a reflector to deflect light through 180 degrees by total internal reflection.
Applications:
•Imaging Optical System
•Optical Measurement System
•Optical Switches
•Beam Alignment
Specifications:
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Material:
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BK7 Grade A Optical Glass
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Dimension Tolerance (mm):
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+/-0.2 (General), +0/-0.05 (High Precision)
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Angle Tolerance:
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5 arc min. (General), 3 arc sec. (High Precision)
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Flatness (per 25mm@633nm):
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λ/2(General), λ/10 (High Precision)
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Clear Aperture:
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>80% (small size),>95%(large size)
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Surface Quality:
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60/40 (General), 10/5 (High Precision)
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Bevel (mm):
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0.1-0.5
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Coating:
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Uncoated or AR /Metal/HR coating--Unpon Request
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Note for Right Angle Prism:
(1). Besides Fused Silica, custom-made Right Angle Prisms, which are made of other optical materials,
such as N-BK7, N-SF11, Pyrex, etc. are available.
(2). Typical dimension is 5.0mm, 10.0mm, 12.7mm, 15.0mm, 20.0mm, 25.4mm, 30.0mm, dimension from 2.0x2.0x2.0 mm to 150.0x150x150.0 mm is available.
(3). Better precision such as 1 min., 30sec., 15sec., 10sec., and 5sec. is available.
(4). Typical bevel is 0.25mmx45o, other bevel from 0.1mmx45o to 0.5mmx45o is available upon request.
(5). Anti-Reflective(AR), High-Reflective(HR), Partial-Reflective(PR) coating prisms are available.
