What are the main features and applications of Sapphire Glass?
1. Wear-resistant, high hardness, corrosion resistance, small friction coefficient, is an ideal properties for precision instrument mechanical bearings.
2. Abrasion resistance, high hardness, corrosion resistance, and excellent light transmission performance, so it is also the preferred cover material for advanced watches;
3. High strength, corrosion resistance, high thermal conductivity, high thermal conductivity, high light transmission characteristics, anda wide light transmission band (from near ultraviolet to 7um mid-infrared band), is an ideal window material and optical component material;
4. Excellent electrical insulation performance, hexagonal symmetrical structure, stable chemical performance, excellent semiconductor and superconducting substrate materials (small leakage capacitance and parasitic capacitance);
5. The lattice constant mismatch rate between the sapphire C-plane and the III-V and II-VI group deposited films is small (the mismatch rate with GaN is less than 4%), so it is currently the most important GaN blue LED and LD Epitaxial substrate material.
| Thermal Properties of Sapphire |
| Melting poimt |
2045ºC |
| Application temperature |
<2000ºC |
| Thermal expansion |
5.8×10^-6/K |
| Heat capacity |
18.6cal (Mol ºC) ,(25ºC) ,30cal (Mol ºC) (1000ºC) |
| Thermal conductivity |
25.12W/m.k (@100Mol ºC) |
| Specic heat |
0.418W.s/g.k |
| Optical Properties of Sapphire |
| Refraction |
nd=1.768 ne=1.760 |
| Optical transmission |
T≈82%@0.3-5um |
| Reflective loss |
20% |
If you are interested in our products, please feel free to contact us!
It is also available to supply the coating wavelength curve, such as AR coating, BBR coating, filter coating, and so on.
Changchun Yutai Optics Co., Ltd. is a manufacturer with ISO9001 certification. We specialize in high-performance optical components
including lenses, mirrors, filters, windows, and prisms which are specified by customers. Yutai's items are widely used in imaging, defense, medical,
laser, and industry markets. As a fast-growing supplier in Optics, Yutai Optics has quickly established itself as a leader in optical components with advanced technology and quality control ability as Yutai aims to provide professional service and good quality items to meet customers' requests.
Yutai already established long-term relations with many powerful companies all over the world.
- Q: What are your main products?
- A: Optical lenses, mirrors, windows, filters, prisms
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- Q: How long is your delivery time?
- A: In general delivery time is about one month for custom-produced optics. except for stock ones or some special optics.
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- Q: Do you provide samples? is it free or extra?
- A: We can provide free samples if we have stock optics as you request, while custom-produced samples are not free.
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- Q: What is your MOQ?
- MOQ is 10pcs for most of the optics, while MOQ could be only one piece if you need a element in big dimention.
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- Q: What are your terms of payment?
- T/T, L/C, VISA, Paypal, Alipay or Negotiation.
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