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Sublime Quality Assurance

Blue Light Blocking Glasses-Sublime Blue Blockers-BPI Analyzer

 

Our aim is to live up to the true meaning of our brand Sublime. Hence, the quality of our products is of very high importance to us. Going the extra mile to assure you receive a fit for purpose product is our way of doing business. We therefore invested into applying modern technology in our quality assurance process.

 

BPI UV/BLUE LIGHT ANALYZER

We know that blue light with wavelengths roughly between 400-500 can negatively impact our sleep and overall health by disturbing our circadian rhythm. We employ technology that is designed to check the transmittance of lenses for these wavelengths and provide a figure of merit to use in comparing and choosing lenses that protect you from radiations in this wavelength range. The protection from these blue light wavelengths is the main purpose of the Sublime Blue Light Blocking Glasses. 

The technology applied in our quality control process uses LED light sources entered at 400nm, 430nm, 470nm and 505nm to evaluate lens transmission in these regions. The transmission percentage at each range is measured along with the Wertheim Protection Factor, a figure of merit based on a comparison of the lens's photopic transmission with its blocking ability for high-energy blue light wavelengths. 

 

THE WERTHEIM FACTOR

Our employed technology from BPI enables us to read the transmission of light through a lens with a special UV/Blue Light spectrometer and see what types of light are being transmitted and what lights are being filtered. Black, or air, has a Wertheim Factor of 0, while a perfectly balanced lens filtering blue light/high energy visible light (HEV) and allowing beneficial light through, would have a Wertheim Factor of about 43. For a lens to achieve a 43 factor is pretty rare though.

 

 

THE VALUE OF USING THE WERTHEIM FACTOR

  • It establishes a better standard of quality for blue block tinted lenses.

  • Using a special UV/Blue Light spectrometer we can measure this value for all of our products and maintain and even improve quality over time

  • It provides a simple way to understand the overall quality of blue block tinted products in the market place for consumers. 

 

WHO IS BPI?

BPI (Brain Power Incorporated) is a worldwide company based in the US, manufacturing optical tints used by opticians, optometrists and ophthalmologists in tinting, dying, or otherwise colouring clear plastic, especially optical sunglass lenses. Catering to the optical lens and sunglass manufacturers and optical laboratories, BPI also produces therapeutic and restorative tints, providing ultraviolet (UV) protection and aiding with problems, such as blepharospasm, headaches, retinitis pigmentosa, colour blindness, macular degeneration and retinal damage. BPI is also engaged in manufacturing laboratory equipment, such as tinting instruments, photometers, ultrasound cleaners, spectrometers and ovens for heat and chemical tempering of glass lenses.

 

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Blue Light Blocking Glasses-Sublime Blue Blockers