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HomeNewsCompany News > HB-OPTICAL Developed the First D200 Circular Variable Neutral Density Filters in China

HB-OPTICAL Developed the First D200 Circular Variable Neutral Density Filters in China

Date:May 5,2015

Neutral density filters technical team in HB Optical developed Circular Variable Neutral Density Filters with Dia.200mm successfully. Thus expand product our sequence, what’s more important is our manufacturing goes in to a new height. Our neutral density filters size reach to the world's largest competitors, We are the first production of 200mm coated neutral density filter manufacturers in China.
The neutral filter technology R & D team through independent research and development design coating tools, use electron beam evaporation process, to restructure the existing coating equipment, to solve the controlling difficulty for large size product in the process, finally developed D200*5mm circular variable neutral density filter.The core parameters are stable, reliable and very good repeatability. It’s suitable for large-scale optical testing system, which fills the gaps in the field of HB OPTICAL in this field.

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