4-12"Acrylic Parabolic Mirror Concave Mirror Focus UV Protection Sturdy Durable

Description

4-12"Acrylic Parabolic Mirror Concave Mirror Focus UV Protection Sturdy Durable
Product Description
Material: Acrylic
Diameter of lens: 4"-12" for choose.
Diameter                Focal Length(cm)
4''-----------------------------5.5cm
6''
-----------------------------
12cm
8.2''
--------------------------
17cm
12''
---------------------------
21cm
17.8''
------------------------
61cm
The focal length are calculated, there may be difference.
Feature:
Breakahe-proof,
UV Protection, Sturdy And Durable.
Lightweight, safety, mirror image clearly.
The concave mirror surface made of high quality acrylic material makes the image clearer than ordinary materials. The concave mirror has a strong focusing effect and can fully amplify the physical image. It is an experimental tool for a large number of scientific research institutions, astronomical observations, and electronic information. (Because mirror back processing is not yet in place, all concave mirrors of the company are only available for mirroring)
[Optical Features of Concave Mirrors]
(1) The reflection phenomenon on the concave mirror follows the law of reflection of light.
(2) When the light parallel to the main axis is reflected by the concave mirror, the reflected light will converge at the focus. The focus of the concave mirror is the convergence point of the actual light, so it is the real focus.
(3) The concave mirror converges on the light, and the smaller the focal length, the larger the convergence power.
(4) Four special rays: The light parallel to the main axis is reflected by the concave mirror and then concentrated in the focus; the incident light passing through the focus is reflected parallel to the main axis; the incident light passing through the center of the spherical surface is reversed along the original path; The ray is symmetrical to its reflected light about the major axis.
【Features】
· Not easy to wear, anti-sunlight UV, endurance;
· Robust, durable and shatterproof;
· The mirror image is clear;
· The mirror body is light, safe and reliable;
· Simply wash with a soft cloth or sponge and warm water.
Note:
1.The material is acrylic, not hard glass lens, which is a little soft.
2. Pls tear off the protect film before using it.
About Us
About Item
All items sold by us are being described to the best of our abilities, as accurate as possible, and with utmost conscientiousness on our part.
However, to avoid any potential oversights, I respectfully request your assistance in helping us to make this a mutually satisfactory transaction by THOROUGHLY
reviewing item description and photos, and asking all questions PRIOR TO BIDDING.
Customer Satisfactory
1.Do not hesitate to contact us anytime before and after your purchase, we are committed to your 100% customer satisfaction.
2.We back our commitment with superb service, 100% full money back and a customer satisfaction guarantee.
3.I am here and ready to assist you with any questions or concerns you might have before or after the purchase.
4.My goal is to make sure you are a happy customer and pleasant shopping with us.
Feedback
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If you plan to give us a neutral/negative feedback Or open ebay/paypal case, please write to us immediately so that we can do our best to resolve your problem.
Payment
We only accept PayPal payment.
Shipping
1. All our stock is located in China and all shipments will originate here. Your purchase will be shipped via standard airmail two or three days after payment clears except those custom products.
2. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer responsibility.
Please check with your country customs office to determine what these additional costs will be prior to bidding/buying.
3. Shipments will be shipped from china by EMS or DHL or Fedex or UBI.
A tracking no. is provided once the item is dispatched.
Delivery normally takes 7-20 business days if it can go smoothly through customs.
4. We do not ship on holidays or weekends.
Returns
1. If you receive any damaged or defective items, we will exchange it as quickly as possible.
2. You must contact us within 7 days of delivery of the product to notify us of any defects.
3. You need to send a picture to prove the problems by using ebay's attaching files button.
4. Items must be in original box and kept in good condition.
5. Buyer is responsible for return shipping cost if there isn't any problem with the product. No matter the item is free shipping or not.
On Oct-14-20 at 04:57:35 PDT, seller added the following information: