Products Specification
A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position.
Principle of the periscope.
A - Periscope using two plane mirrors.
B - Periscope using two right-angled prisms.
1 - 2 - Plane mirrors.
3 - 4 - Right-angled prisms.
5 - 6 - Observer eye.
7 - 8 - Periscope tube.
H - Periscope optical height.
A large dimensional prism is commonly used for periscope which is used on tanks, submarines special carriers. Shape can be dove prism and right angle prism.
| Material |
BK7, sapphire, SF11, Si, Ge and other optical glasses |
| Diameter |
1mm-150mm |
| Dia. Tolerance |
0.001mm - 0.003mm |
| Sphericity |
0.001 |
| Clear Aperture |
95% |
| Surface Quality |
20-10 |
Why Us ?
1. Reasonable quotation. We reject unrealistic low prices. As a prerequisite, to ensure the highest quality of lens and offer the reasonable price.
2.Quality assurance. Besides pass the ISO9001 certification, experience team and efficient equipment are the vital guarantee for the product.
3. Timely Delivery. We could ship goods to you in time as lead time we negotiate.
4. Convenient logistics services. We usually cooperate with the famous express logistics company, including 90% regions of the world and ensure the products can delivery to the customers safety and quickly.
Logistics
In order to make the goods safe fast accurate to your hands, we generally recommend that you choose the international logistics company!
Q: What's the delivery time?
(1) For the standard products such as ball lens, powell lens etc.:
For inventory: the delivery is 5 working days after order.
For customized products: the delivery is 2 or 3 working weeks after order.
(2) For the off-standard products, the delivery is 2 or 6 working weeks after you place the order.
Q: How to pay?
T/T, Paypal, West Union, MoneyGram, Secure payment etc.
Q: What's the MOQ?
(1) For inventory, the MOQ is 1 pc.
(2) For customized products, the MOQ is 10pcs-20pcs.
It depends on the technical parameter.
Q: Do you have inspection report for material?
Yes, a inspection report will be supplied, besides, we can also supply ROHS report and reach reports for our products if there is special requirement.
Q: How to ensure the safety of payment?
(1) VY Optics is a reputable company, who is keen to build long-term business relationship with you, but not only one time cooperation..
(2) VY Optics is registered in Chinese government department, all our credentials could be checked on internet.
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