Customized Newton Astronomical Telescope D90 f800 Spherical Objective Secondary Reflective Mirror
| Material |
BK7, Fused Silica, Borofloat,B270, Borosilicate(Pyrex) or other |
| Dimension Tolerance |
+0.0/-0.1mm |
| Thickness Tolerance |
±0.2mm |
| Clear Aperture |
>90% |
| Flatness |
λ/[email protected] per 25mm range or better |
| Surface Quality |
60/40 scratch and dig |
| Coating |
Metal coating on one surface, rear surface ground or inspection polished
Enhanced Aluminum: Ravg>90%@400-700nm
Protected Aluminum: Ravg>87%@400-1200nm
Protected Silver: Ravg>95%@400-12000nm
Protected Gold: Ravg>98%@2000-12000nm |
Optical Mirrors are used for beam deflection, interferometry, imaging or illumination. Using polished glass or metal as the substrate, the beam hits the surface to form a specular reflection.
In order to obtain as much reflected light as possible, a layer of reflective film, including metal film and dielectric film, is often coated on the substrate. Commonly used materials for metal films are: aluminum, silver, and gold. Aluminum has high reflectivity from the ultraviolet region to the infrared region. At the same time, a layer of aluminum oxide can be formed on the surface of the aluminum, so the film layer is firm and stable. The silver film has high reflectivity in the visible and infrared regions, and the polarization effect introduced by changing the incident angle is also very small. Gold film has high reflectivity in the infrared region, and its strength and stability are better than silver film, so it is often used for infrared reflection. The metal film is soft and easy to be scratched and damaged, so a protective film is often coated on the metal film. The metal film mirror is not sensitive to the incident angle, it only needs to meet the geometric reflection conditions, and can be used in a relatively wide wavelength range.
Generally speaking, metal film mirrors can already meet the needs of optical instruments. If higher reflectivity is required, multi-layer dielectric reflective films and dielectric reflective films can be used to improve reflectivity and reduce absorption loss.
The incident angle and wavelength will affect the reflection efficiency of the dielectric film, and the incident angle is generally marked: 0° or 45° and a specific working wavelength range. The incident angle and wavelength will affect the reflection efficiency of the dielectric film, and the incident angle is generally marked: 0° or 45° and a specific working wavelength range.
Application field
Optical Instruments/High-end equipment/Military Industry/Space Flight and Aviation
Shanghai Jingsheng is a professional manufacturer of precision optical components and laser crystal components. The company has a technical team with many years of experience in the industry. We can customize various optical components according to your detailed requirements, drawings or samples. Welcome to inquire. The company has passed the ISO9001 quality system certification and has advanced production and testing equipment. The company also has the ability to produce from small batches, multi-variety and high precision to mass production, to meet customers' one-stop product procurement needs and provide optical solutions.
Since establishment,the company has been committed to the research and deve lopment, production and sales of optical components,capable of designing optical systems and the production of related accessories, and obtaining the right to import and export products.The products are sold to many countries and regions, and the United States,Canada,the European Union and other optical companies have established long-term and good cooperative telations, and have gained a good reputation with high-quality products.
1. Are you a manufacturer or trader? Can I visit your factory or office? How to see your factory on line?
We are a manufacturer in Shanghai, China.You are welcome to visit our factories and offices at any time.
2.What's your minimum order quantity?
1 unit.
3.What's your payment term?
T/T, Letter of Credit, Western Union etc.
4.Do you have professional person to design according to my requirement?
Of course, we have R&D department to work with you and provide you the best service until you will be satisfactory.
5. What's the lead time?
It is up to your quantity and specification and our stock.
Your products will be sent within 5 days once you make payment for the stock products.
6. Do you have enough stock?
Sure. We have enough stock because our factory is in this area for over 20 years.You can contact our salesperson to get stock at any time.
7. Can you accept OEM or ODM?
Yes, we accept all OEM and ODM.
8. Do you give a warranty of your products?
Yes, if there is a quality problem, you can contact us freely, we can give you the solution in time. We will rework or provide the replacements to you at our cost according to actual conditions.
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