Purple Haze. . .
Purple flares?, those photos indicate a chromatic aberration inherent to lenses. Any amateur astronomer who has ever looked through a cheap, fast (<f7), Chinese made achromatic refracting telescope recognizes that symptom for what is immediately. It's all about balancing the indices of refraction of differing type optical transmission media. The steeper the curves of the lenses the greater the challenge to bring all available wavelengths to a common focus. One technique used is add a third element to create an apochromatic lens system.
The lens system used in this device could in fact be a singular lens, similar to the telescope used by Galileo. That however would spectacularly colorful not merely purple hazed.
{my two cents}; whaddya' think?
Purple flares?, those photos indicate a chromatic aberration inherent to lenses. Any amateur astronomer who has ever looked through a cheap, fast (<f7), Chinese made achromatic refracting telescope recognizes that symptom for what is immediately. It's all about balancing the indices of refraction of differing type optical transmission media. The steeper the curves of the lenses the greater the challenge to bring all available wavelengths to a common focus. One technique used is add a third element to create an apochromatic lens system.
The lens system used in this device could in fact be a singular lens, similar to the telescope used by Galileo. That however would spectacularly colorful not merely purple hazed.
{my two cents}; whaddya' think?