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Direct pressing blanks of optical glass

Direct pressing: Len and prism blanks with diameter of 10-100mm, piece weight of 5-350g.

Direct pressing blanks are made through melting, direct drooling, pressing and precision annealing.



 

External diameter of molded blank
(mm)

Direct pressing blank

External diatolerance
(mm)

Thickness tolerance
(mm)

<12

±0.10

±0.20

12~40

±0.15

±0.20

41~60

±0.20

±0.20

61~90

±0.30

±0.30

91~150

±0.40

±0.40

>150

±0.50

±0.50



Gobs of optical glass

The cross section of gobs without precision annealing is nearly circular, and the weight or volume is determined by customers’ requirements.

 

 




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Hubei New Huaguang Information Materials Co., Ltd.