All Julbo lenses belong to optical class 1 and guarantee 100% protection against UVA, B and C. 

Special treatments:   Julbo is an expert in solar protection for high -risk environments and develops highly specific treatments for each condition of use. 

• Anti-fog:  Applied by laser on the inside of the lens to guarantee maximum life. This same technology is used on helmet visors for grand prix racing.
• Anti-Reflection:  Increase optical comfort and eliminates parasitic reflections.
• Brown Out:  Gives enhanced filtration of visible light.
• Flash:  Increases visible light filtering through a mirror effect on the lens.
• Hydrophobic:  Causes water to slip off the lens.  The treatment prevents the creation of hydrogen links between water molecules.  Visibility is enhanced.

Protection Classes (CE standards)

Lens Materials:

• ARC Mineral:  Recommended for deserts and mountaineering.  Glass.  Excellent quality optics, scratch resistance, extra infrared protection.  Additional treatment to provide more impact resistance.
• Spectron Polycarbonate:  Recommended for all sports.  Shock resistant and lightweight.  Anti-scratch surface treatment.
• NXT:  High definition vision, superior optical quality, optimum transparency; light and unbreakable; lasting strength and resistance to solvents.   Made using low-temperature casting techniques which reduce internal stress in the material, this improves optical quality, gives excellent transparency, and increases long-term stability. NXT lenses were developed for the US Army.  3 high technology NXT lenses:
  •   Polar + : High precision polarizing lens with anti-reflection. This lens optimizes the view, cutting out distortion, and eliminating dazzling sun glints from all reflective surfaces.
  • Zebra: Photochromic lens. Wide amplitude in categories 2 to 4 with fast activation speed (22 to 28 seconds). Anti-fog treatment.  The glass darkens or lightens as the surrounding brightness changes (from 40.7% to 6.6% of the visible light transmission rate depending on luminous intensity).  Recommended for mountain biking, trails and climbing. 
  • Cameleon:  Photochromic and polarizing, dual technologies.  Progressive protection in categories 3 to 4.  Anti-glare, high definition polarizing lens which darkens or lightens as the brightness changes.  Recommended for water sports and mountaineering. 

Lens Colors

Picture of color	Color	Lens Material	Tips for use and treaments	% of visible light transmission	Protection Index
	Alti Arc X8	ARC Mineral	High altitude/Bright sun--cannot be used driving Anti-reflection treatment and flash mirror	7%	4
	Altitude Arc	ARC Mineral	High altitude/Bright sun--cannot be used driving Anti-reflection treatment and Active Brown-out and Flash Mirror	4%	4
	Clear Sight	Polycarbonate	low light	91%	0
	Spectron Hi Contrast	Polycarbonate	partly sunny	50%	1
	Spectron Blue	Polycarbonate	Sunny	41%	2
	Spectron X4	Polycarbonate	High altitude/sunny	13%	3
	Spectron X5	Polycarbonate	High altitude and sunny flash treated	12%	3
	Alti Spectron X6	Polycarbonate	High altitude and sunny--cannot be used while driving--Flash treatment and anti-reflection coating	5%	4
	Polarized	Polycarbonate	High altitude/sunny--Flash treament	15%	3
	Polar +	NXT	high altitude/Sunny--anti-reflection treament	9%	3
	Zebra	NXT	High altitude/sunny--Photochromic. Antifog treated. Cannot be used driving	Varies	2 to 4
	Cameleon	NXT	High altitude/sunny--Photochromic. Anti-fog treated or Hydrophoic  treated or Anti-reflection treament. Cannot be used driving	Varies	3 to 4