1) This product has four USB extension port connector. There are version 1.1 and 2.0 available
2)USB HUB connected to the input line into a computer USB port,
4 blue light lit up;
3)can be inserted any disk, mp3, SD, and other USB digital devices
4) material:ABS
5) Product Patent No.:200830050301.0
We can manufacture Ruled Gratings,Concave Gratings and Holographic Gratings.
The specifications as follow seprately:
1)ruled area ≤70*70mm
Wavelength Range0.2-0.8μm Grooves Per mm1200L/mm-3600L/mm
Diffraction>70% Ruled Gratings
2)Specifications: Ruled area≤70*70mm
Wavelength Range...
The specifications we can produce as follow:
Material: Bk7,Quartz,Caf2,Crystal
Diameter:5mm-300mm
Diameter tolerance:0.01mm-0.1mm
Edge Thickness:1mm+/-0.10mm
Focal length:0.1%-2%
Surface quantity:80/50 to 20/10
Centration:1-3Arc minutes
Fringes:1-5
Coating:No or AR
The specifications we can produce as follow:
Material: Bk7,Quartz,Caf2,Crystal
Diameter:5mm-300mm
Diameter tolerance:0.01mm-0.1mm
Edge Thickness:1mm+/-0.10mm
Focal length:0.1%-2%
Surface quantity:80/50 to 20/10
Centration:1-3Arc minutes
Fringes:1-5
Coating:No or AR