Product type: Concave Lens. Application: Medical, Optical. Model: yt396.
Overview
The T1/2/3/5mm Polished Round/Square Corning Eagle Xg Glass Sheet /Optical Windows is supplied as an optical glass window made from Optical Glass. Listed geometry: diameter +0.0/-0.15 mm, thickness 0.55/0.8/1.0/1.2/1.3/1.8/2.0/3.0/5.0mm, single-lens shape. Optical / electrical data: transmittance 90%-95%. Coating: HC; surface quality 60/40,40/20 or Better. Typical applications: Medical and Optical. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Type | Concave Lens |
| Shape | Single-lens |
| Thickness | 0.55/0.8/1.0/1.2/1.3/1.8/2.0/3.0/5.0mm |
| Transmittance | 90%-95% |
| Coating | HC |
| Surface Quality | 60/40,40/20 or Better |
| Clear Aperture | 90% |
| Usage | Medical, Optical |
| Model NO. | yt396 |
| Lenses Color | Clear |
| Color | Transparent |
| Polished | Yes |
| Diameter Tolerance | +0.0/-0.15 mm |
| Thickness Tolerance | +/-0.1mm |
| Centring Error | <3 Arc Minute |
| Bevel | 0.25mm×45 ° |
| Introduction | As emerging mobile applications drive increased demand for thinner, lighter display panels, |
| Product features | a) high heat resistance |
| Technical Indicators | a) |
| b) Size | 440*360,410*410,1500*1850(Maximum size 2880 x 3130 mm) |
| c) Density (20oC, 68oF) | 2.38 g/cm3 |
| d) Refractive index nD | 1.5198 |
| e) Luminous transmittance τvD65(d = 1.1 mm) | 91.7 % |
| f) Surface roughness | < 1 nm RMS |
| materials comparison | Material |
| Supplier | Changchun Yutai Optics Co., Ltd. |
Technical data
| Material | Corning Eagle Xg Glass |
|---|---|
| Diameter Tolerance | +0.1, -0.1 mm |
| Thickness Tolerance | ±0.2 mm |
| Parallelism | <3 arc minutes |
| Clear Aperture | >85% |
| Surface Quality | 60-40 scratch and dig |
What to specify when you request a quote
- Material and grade — listed as “Optical Glass”; 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 — listed as “+0.0/-0.15 mm”; give the nominal size and the tolerance you can accept.
- Thickness — listed as “0.55/0.8/1.0/1.2/1.3/1.8/2.0/3.0/5.0mm”; state nominal thickness and tolerance; thinner windows need tighter flatness control.
- Surface quality and flatness — listed as “60/40,40/20 or Better”; quote scratch-dig and flatness over the clear aperture, not the whole part.
- Coating — listed as “HC”; list the wavelength band and the maximum reflectance per surface for any AR coating.
- Clear aperture and edges — listed as “90%”; define the usable aperture and the edge chamfer.
Engineering guides for this part
For material grades and coating options, see BOROFLOAT 33 & Alkali-Free Glass Wafers: Material Guide. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. For an application example, read Custom Optical Window Glass for Smart Thermostats | OEM/ODM. Before sending a drawing, check Precision Glass Material Selection: Fused Silica vs Borosilicate & More. A related standard product is Alkali-Free Glass Wafers.
