Technical requirements:Antireflection coatings iscoated on surfaces R1and R2;the mean transmission in the 900nm to 2500nm wave band is equal to or more than 98%@632.8nm;Measured transmission of the antireflection coatings as below.
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Quality of optical glass
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Uniformity
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H2
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Fringe intensity
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1C
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Birefringence
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2
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Extent of bubble
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1C
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Light absorptivity
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3
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Precision of optical machining
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R1
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R2
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Specimen precision △R
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A
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A
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Partial deviation △N
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0.3
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0.3
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Eccentricity o
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0.02
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0.02
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Surface finishment MIL
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Ⅲ
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Ⅲ
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Clear aperture Do
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φ152
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φ152
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