18/23/37/50mm Quartz Plano Convex Lens Optiacal LED Condensor DIY Telescop Lens
Quartz Optical Glass Plano Convex Lens
Material: Quartz Optical Glass
Diameter: 18mm, 19mm, 23mm, 24mm, 37mm, 50mm,
| Diameter(mm) |
Focal Length |
Center Thickness |
Edge Thickness |
Object Distance |
Magnification |
| 18 |
35 |
5 |
3 |
20 |
20X |
| 19 |
40 |
5 |
3 |
30 |
18X |
| 23 |
80 |
3 |
1.5 |
60 |
12X |
| 24 |
80 |
4 |
2 |
60 |
12X |
| 37 |
150 |
5 |
3 |
100 |
10X |
| 50 |
180 |
6.5 |
3.5 |
120 |
10X |
Return or Exchange
- If you are not satisfied when you receive your item, please return it within 14 days for a replacement or money back.
- Please contact me before you return it.
- If item is defective in 3 months, We will send you a replacement without extra charger, or offer refund after we receive the defective item.
- If item is defective after 3 months, you can still send it back to us.
- We will send you a new one after receiving the defective item. But you have to pay the extra shipping fee.
Policies
- We are not responsible for any custom duty or import tax.
- We will leave POSITIVE FEEDBACK after receiving the payment.Please contact us if you are not satisfied with the item after receive it.
- All messages will be answered within 1 business day. If you do not receive our reply, please kindly re-sent your message and we will reply to you as soon as possible.
- Serious Buyer Only! Please place bid only if you agree with all the terms.
- If you have any problems or concerns whatever with your order or products,please message us and give us a chance to assist you before you leave any feedback.
- We believe we can produce a positive outcome to any situation and will work hard to earn your praise.
Shipping
- We Ship to Worldwide. Please contact with us if didn't find your country.
- Items will be shipped within 1-10 business days on payment received.
- Delivery time depends on destination and other factors, it may takes up to 20 business days.