The colourless optical glass covers more than 200 types which including environmentally-friendly colourless optical glass, low softening point optical glass, non-eco optical glass and radiation resistant glass, etc.
Colourless optical glass is widely used in consumer electronics such as camera, mobile phone, projector, CCTV camera. It is also widely used in astronomy, biology, medicine and aerospace, etc.
CDGM colourless optical glass is available in the form of glass blanks, pressed blanks, cut blanks，optical preforms as well as optical components.
The specifications are shown in the following table:
Blocks：upon request of customers
OD(outer diameter): Ф7mm～Ф350mm
CT(center thickness): 1.1mm～50mm
OD(outer diameter): Ф3.2mm～Ф10mm
Side length or diameter: 5mm～180mm
upon request of customers
OD(outer diameter): Ф2.5mm～Ф150mm
CT (center thickness): 0.5mm～50mm
Min edge length：5mm
Max edge length：150mm
Lens: OD(outer diameter): Ф2mm～Ф35mm
CT (center thickness): 0.4mm～25mm
Spherical lens, aspherical lens, customized special-shaped products
Notes：The supply forms and dimensions depend on glass type. Please contact us.
The allowable tolerance of nd and νd is generally controlled within：
As requested, the allowable tolerance of nd and νd could be controlled in ±20×10-5 and ±0.3% respectively. For fine anneal glass types of H-K9L、H-K9LGT、H-BaK7、H-BaK7GT, the tolerance of nd and νd could be controlled in ±10×10-5 and ±0.2%. Please contact us for other specifications.
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Comparison Table of Optical Glass Types201904.xlsx
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