Product type: Flat Lens. Application: Lighting, Medical, Optical, Photography, Astronomy, Laser, Communication. Model: RAY-XS155#.
Overview
Durable Barium Fluoride Optical Windows for Laser Technology is a sapphire / infrared window made from Barium Fluoride. Listed geometry: single-lens shape. Optical / electrical data: wavelength -1.65 X 10(-5), transmittance 80%-90%. Coating: Uncoating/Coating/Polishing. It is used in Lighting, Medical, Optical, Photography and Astronomy. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Barium Fluoride |
|---|---|
| Substrate | Barium Fluoride |
| Type | Flat Lens |
| Shape | Single-lens |
| Wavelength | -1.65 X 10(-5) |
| Transmittance | 80%-90% |
| Coating | Uncoating/Coating/Polishing |
| Usage | Lighting, Medical, Optical, Photography, Astronomy, Laser, Communication |
| Model NO. | RAY-XS155# |
| Lenses Color | Clear |
| Linear Thermal Expansion Coefficient | 18.1 |
| Thermal Conductivity | 11.72 W/M.K |
| Refractive Indices | 1.0/1.46861; 11.0/1.38660 |
| Abbe Number | Vd = 81.61 ; Ve = 81.02 |
| Melting Point | 1386 Celsuis Degrees |
| Products Name | Barium Fluoride(BaF2) |
| Alias | Barium Fluoride(BaF2), Barium Fluoride, Barium Fluoride VIS, Barium Fluoride IR, Hellma Barium Fluoride, Barium Fluoride Windows, Hellma BaF2, hellma BaF |
| Thermal Properties | Items |
| Mechanical Properties | Items |
| Optical Properties | Items |
| Applying Fields | 1).Advanced thermal imaging |
| Main Cooperation Materials Manufacturers | CORNING, OHARA,, LEONI, AGC,HELLMA, VITRON,C-LASER,ETC |
| Supplier | Shanghai Rui Tai Photoelectric Technology Co., Ltd. |
Technical data
| Items | Value |
|---|---|
| Melting Point(ºC) | 1386 |
| Specific heat capacity | 410 J / kg x K |
| Linear thermal expansion coefficient α(0 °C) (10-6/K) | 18.1 |
| Items | Value |
|---|---|
| Young's Modulus, E (25 °C)(Modulus of Elasticity) | 53.07GPa |
| Shear Modulus, G (Modulus of Rigidity) | 25.40GPa |
| Posssion's Ration u | 0.343 |
| Knoop Hardness HK | 82 |
| Mohs Hardness | 3.0 |
| Density (g/cm3) | 4.89 |
| Items | Value |
|---|---|
| Refractive indices | (at 22.6°C (± 0.3°C )) |
| 1.0 | 1.46861 |
| 2.0 | 1.46464 |
| 3.0 | 1.46119 |
| 4.0 | 1.45671 |
| 5.0 | 1.45103 |
| 6.0 | 1.44398 |
| 7.0 | 1.43561 |
| 8.0 | 1.42579 |
| 9.0 | 1.41435 |
| 10.0 | 1.40131 |
| 11.0 | 1.38660 |
| Abbe number | Vd = 81.61 ; Ve = 81.02 |
| Thermal coefficient of refractive index | 18.41810-6 |
| 0.5 | -1.65 x 10-5 |
| 5.0 | -1.60 x 10-5 |
What to specify when you request a quote
- Material and grade — listed as “Barium Fluoride”; name the glass or crystal grade (for example JGS1, N-BK7, Borofloat 33, sapphire) because it fixes the transmission band and thermal limits.
- Diameter or outline — give the nominal size and the tolerance you can accept.
- Thickness — state nominal thickness and tolerance; thinner windows need tighter flatness control.
- Surface quality and flatness — quote scratch-dig and flatness over the clear aperture, not the whole part.
- Coating — listed as “Uncoating/Coating/Polishing”; list the wavelength band and the maximum reflectance per surface for any AR coating.
- Clear aperture and edges — define the usable aperture and the edge chamfer.
Engineering guides for this part
For material grades and coating options, see Infrared Window Glass: Material Options for Optical Sensors & Parts. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. For an application example, read Infrared Window Glass for Smart Home Appliance Sensors. Before sending a drawing, check Specifying Coatings for Custom Glass Windows and Substrates. A related standard product is Infrared Windows.
