What are the inspection items and standards for optical lenses?

Optical lens manufacturers introduce to you that the glass initially used to make lenses is ordinary window glass or pimples on wine bottles, which are shaped like "crowns", hence the name "crown glass" or "crown glass". At the time, the glass was extremely uneven and full of foam. Besides crown glass, there is another type of flint glass with high lead content.

Optical glass is mixed with high-purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium and other oxides according to a specific formula, melted at high temperature in a platinum crucible, and stirred uniformly with ultrasonic waves to remove air bubbles; then slowly cooled for a long time time to avoid internal stress in the glass block. The cooled glass block must be optically measured to check compliance with specifications for purity, transparency, uniformity, refractive index and dispersion index. A qualified glass block is heated and forged to form an optical lens embryo.

Detection range (part):

Optical lenses, resin lenses, glass lenses, fluorite lenses, etc.

Test items (parts):

Optical properties, refractive index, dispersion force, reflectivity, transmittance and light absorption, etc.

Test standard (part):

BS EN ISO 8980-3-2004 Ophthalmic optics. Unfinished spectacle lenses. Transmission specification and test methods

BS EN ISO 8980-4-2006 Ophthalmic optics. Finished unpolished spectacle lenses. Test methods and specifications for anti-reflective coatings

BS EN ISO 11715-1-1998 Ophthalmic optics. Format of digital data files for transmission of spectacle lens shaping data. Dual dimension tracking procedures

BS EN ISO 11978-2000 Ophthalmic optics. Contact lenses and contact lens care products. Information provided by the manufacturer

BS EN ISO 11980-2009 Ophthalmic optics. Contact lenses and contact lens care products. Guidelines for clinical testing

BS EN ISO 11985-1998 Ophthalmic optics. Contact lenses. Ageing by exposure to ultraviolet and visible radiation (in vitro method)

BS EN ISO 11985-1998 (R2008) Ophthalmic optics. Contact lenses. Ageing by exposure to ultraviolet and visible radiation (in vitro method)

BS EN ISO 12864-1998 Ophthalmic optics. Contact lenses. Determination of astigmatism

BS EN ISO 12864-1998(R2008) Ophthalmic optics. Contact lenses. Determination of astigmatism

BS EN ISO 13666:1999 Ophthalmic optics - Spectacle lenses - Vocabulary - Partial replacement

BS 3521-1:1991 BS EN ISO 14534-2009 Ophthalmic optics. Contact lenses and contact lens care articles. Basic requirements

BS EN ISO 14730-2000 Ophthalmic optics. Contact lens care products. Guidelines for testing the efficacy of antimicrobial preservatives and for determining the expiration date.

DIN 58750-2-1995 Tests for polishing compounds for optical engineering technology. Part 2: Polishing properties of silicate and synthetic lenses

DIN 58763-1997 Optical processing. Transport trays. Production of spectacle lenses R×2 field

DIN EN ISO 8980-1-2004 Ophthalmic optics - spectacle lenses with rough edges - Part 1: Specification for single vision and multifocal spectacle lenses

DIN EN ISO 8980-2-2004 Ophthalmic optics—Far-edge spectacle lenses—Part 2: Specification for progressive focus spectacle lenses

DIN EN ISO 8980-3-2005 Ophthalmic optics - Finished uncut spectacle lenses - Part 3: Specification and test methods for light transmission

DIN EN ISO 8980-5-2005 Ophthalmic optics - Raw-edge spectacle lenses - Part 5: Minimum requirements for declared abrasion-resistant lens surfaces

DIN EN ISO 9342-1-2005 Optics and optical instruments - Inspection lenses for focal length meter correction - Part 1: Focal length inspection lenses for measuring lenses

DIN EN ISO 21987-2010 Ophthalmic optics - Mounted spectacle lenses

GB 10810.1-2005 Spectacle Lenses Part 1: Single Vision and Multifocal Lenses

GB 10810.3-2006 Spectacle lenses and related spectacle products-Specification and measurement method of transmittance

GB/T 14148-2011 Optical glass spectacle lens blank

GB/T 20165-2012 Rare Earth Polishing Powder

GB/T 26397-2011 Ophthalmic optics Terminology

GB 27995.1-2011 Semi-finished spectacle lens blanks - Part 1: Specification for single vision and multifocal spectacle lens blanks

GB 27995.2-2011 Semi-finished spectacle lens blanks - Part 2: Specification for progressive focus spectacle lens blanks

GB/T 32166.2-2015 Personal protective equipment - Eye and face protection - Occupational eye and face protection - Part 2: Measurement methods

GB/T 38120-2019 Technical requirements for light health and light safety application of blue light protective film

GB/T 40177-2021 Optical and optical instruments - Ophthalmology - Dial scale