BK7 Windows
Made from BK7 material, which has transparent range from 330-2100nm. The refractive index is 1.5168 at 587.6nm. The BK7 window has good performance over visible and near IR spectrum for most application.
●Product Origin: China
●Shipping Port: Fuzhou China
●Lead Time: 4 working weeks
●Payment: T/T Payment, Western Union
+86-0591-83275656
Product description
N-BK7 Windows and H-K9L Windows
Made from BK7 material, which has transparent range from 330-2100nm. The refractive index is 1.5168 at 587.6nm.
The BK7 window has good performance over visible and near IR spectrum for most application.
H-K9L is the equivalent material to N-BK7. N-BK7 is made of by Schott Germany,
H-K9L is made by CDGM China.H-K9L products price is better than N-BK7.
Note for N-BK7 Window:
(1).Custom-made N-BK7 windows at any size from Φ2.0mm to Φ350mm clear aperture are available.
Besides round, N-Bk7windows at shape of quadrate, triangular, or other polygonal are available.
(2).Thickness from 1.0mm to 50.0 mm is available upon request.
(3).100% clear aperture is available upon request.
(4).Better bevel is available upon request.
(5).N-BK7 Windows with Anti-Reflective(AR), High-Reflective(HR), Partial-Reflective(PR) coating are available.
Specification
Material: BK7 grade A optical glass
Bevel: <0.25mm X 45°
Coating: Optional
Standard | High Precision | |
Diameter Tolerance: | +0.0/-0.2 | +0.0/-0.02 |
Thickness Tolerance: | ±0.2 | ±0.005 |
Surface Quality: | 60-40 | 10-5 |
Clear Aperture: | >85% | >95% |
Flatness (per 25mm@633mm): | λ/2 | λ/10 |
Parallelism: | 3 min | 30 sec |
Typical Sizes:
Round Shape: Φ5.0; Φ10.0 ; Φ12.7; Φ15.0; Φ20.0; Diameter(mm): Φ25.4; Φ30.0; Φ38.1; Φ50.8; Φ76.2
Square Shape: 5.0x5.0 ; 10.0x10.0 ; 15.0x15.0 ; WxH(mm): 20.0x20.0; 25.0x25.0; 50.0x50.0
Thickness(mm): 0.5; 1.0; 1.5; 2.0; 3.0; 4.0; 5.0; 6.0; 8.0; 10.0