Optical Grade Borosilicate Glass Prismatic Lens for Specialty Lighting

Optical Grade Borosilicate Glass Prismatic Lens for Specialty Lighting

1. Material

• Core Substrate: Optical-grade borosilicate glass (e.g., Schott Borofloat® 33, Corning 7980) with exceptional purity (>99.9% SiO₂).

• Key Additives: Boron trioxide for low thermal expansion, alkali oxides for chemical resistance.

• Coatings: Optional AR/IR coatings for wavelength-specific transmission enhancement.

2. Key Properties

• Optical Clarity: >92% transmission (400–700nm VIS range), minimal bubbles/inclusions (Class 0-1 per ISO 12123).

• Thermal Resilience: Low CTE (3.25 × 10⁻⁶/K), withstands thermal shocks up to 160°C ΔT.

• Surface Precision: λ/4 surface flatness, 80-50 scratch-dig standard.

• Refractive Control: Precise refractive index (nd=1.47–1.51) for controlled light bending.

• Durability: Resists acids, water, and UV degradation (unlike acrylic).

3. Primary Function

• Light Redirection: Uses prismatic geometry to refract, reflect, or disperse light via total internal reflection (TIR).

• Beam Shaping: Converts raw light into uniform patterns (e.g., flat-top, linear, or asymmetric distributions).

• Glare Reduction: Minimizes hotspots by diffusing light angles.

• Color Fidelity: Maintains CRI >95 with minimal chromatic shift.

4. Critical Applications

• Architectural Lighting:

  • Cove lighting diffusers

  • Linear LED channel systems

  • Museum accent fixtures

• Entertainment:

  • Stage/studio spotlight lenses

  • Projection system homogenizers

• Commercial/Industrial:

  • Retail display case lighting

  • Machine vision inspection optics

  • Medical device illuminators (endoscopes, surgical lights)

• Transportation:

  • Aircraft cabin mood lighting

  • Automotive signal lenses