Optical K9/BK7 Glass Disc
Price range: $10.00 through $220.00
- Type: Optical K9 BK7 Glass Disc
- Material: high quality borosilicate crown glass
- Feature: >91% @380-760nm, nd-1.516, vd-64, Mohs6.5
- Order Processing Time: 3 to 5 work days
- Customization：available
- Item NO.: M26225
Size: L=length*W=weight*T=thickness
K9/BK7 glass disc, also known as optical crown glass, is a widely used borosilicate glass with well-balanced properties, making it ideal for optics and crystal-like crafts.
Key Characteristics:
Optical Clarity: High transmittance (>91% in visible light) with excellent homogeneity.
Refractive Index & Dispersion: Moderate refractive index (~1.516) and high Abbe number (~64), meaning low chromatic aberration.
Hardness: Relatively hard (Mohs ~6.5), providing good scratch resistance.
Thermal Stability: Low coefficient of thermal expansion offers improved thermal shock resistance.
Workability: Easier to cut, grind, and polish compared to many specialty optical glasses.
Common Uses: Lenses, prisms, windows in optical instruments, and high-quality decorative items or “simulated crystal.”
| Weight | N/A |
|---|---|
| Size(D*T) | 4mmx1mm(10pcs), 5mmx0.5mm(10pcs), 5mmx2mm(10pcs), 8mmx1mm(10pcs), 8mmx2mm(10pcs), 12mmx1mm(10pcs), 12mmx1.5mm(10pcs), 14.5mmx2mm(10pcs), 17mmx1mm(10pcs), 18mmx1mm(10pcs), 23mmx1mm(10pcs), 25mmx1mm(10pcs), 35mmx1mm(10pcs), 36mmx2mm(10pcs), 42mmx2.5mm(10pcs), 43mmx1mm(10pcs), 49mmx1mm(10pcs), 54mmx2mm(10pcs), 57.5mmx2mm(10pcs), 80mmx2mm(10pcs), 100mmx1mm(10pcs), 100mmx2mm(10pcs), 100mmx5mm(2pcs), 110mmx2mm(3pcs), payment link for customization |
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