The major tasks in Engineering optics and medical optics are:  Developing measuring methods and measuring devices for optical materials, optical systems and medical optical instruments; Studying, establishing, preserving and maintaining the national measurement standards;
Drafting national standards, metering regulations and international recommendations; Undertaking the work of value transfer.

  • Research in Laser Differential Confocal Radius Measurement...

    Since the zero crossing point of a differential confocal intensity curve corresponds to the focus of its object lens,the zero-crossing point can be used to identify the cat-eye and confocal positions of the tested device precisely. Besides, we...

  • Study of Center Transmittance of Spectacle Lenses and...

    We built up the standard for center transmittance of spectacle lenses (optical lens) in 2001. The standard contains of standard equipment and standard lenses for center transmittance of spectacle lenses (optical lens).we do continuous research on...

International Cooperation

  • As ISO/TC172/SC7/WG6 and WG9 Working Group members, we participate in international standard drafting and revision work.

  • Attend annual meeting of ISO/TC 172, Optics and photonics, Subcommittee SC7 and Ophthalmic optics and instruments.

National Measurement Standards and CMCs

National primary standard for vertex power measuring range:-25D~+25D;  uncertainty: 0.01D~0.02D(k=3)

Standard for center transmittance of spectacle lenses ( optical lens ) measuring range: 280nm~780nm;  uncertainty: 1%(k=2)

Standard for pupil distance meters: measuring range: 50mm~80mm;  accuracy class: 0.1mm

Standard for refractive index of the glass materials refractive index range: 1.40~1.80;  uncertainty ( visiual band): 5×10-6(k=3)

Working standard for optical transfer function Field: 0°~±60°; spatial frequency of the image side:(0~1000)lp/mm



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