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Senior Engineer, Yilin

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FAQ

We are a national high-tech enterprise in China. For each product, we cover the entire industrial chain, ranging from research and development to manufacturing, and then to technical service solutions.

We provide samples and will try our best to keep the fees as low as possible. If you are our regular customer, we will offer some free samples.

You can contact sales online to get latest price; Or you can leave message to us. Our sales will contact you as soon as possible. And the price we provide is normally FOB price.

We accept payments via T/T, PayPal and LC.

Our minimum order quantity is 1 pc.

Please contact sales to confirm if we still have goods in stock. If yes, we will ship goods to you in one week time after we receive your payment. If not, please confirm with sales.

Usually we ship goods to customer via express, such as DHL, FedEx, UPS, TNT or airway transportation. You can also ask us to send goods to your forwarder in China. And we will pay domestic freight.

Yes, we provide OEM/ODM service. Lead time of customized products need to be confirmed with sales. Usually we will ship products after 2 months time after we receive customer’s payment.

Our skilled and friendly salesmen are ready to answer your questions about our products and services at any time, from product selection to application. Free technical consultation services are offered by request. Our experienced engineers are here to cooperate with you on your special requirements or OEM designs.

The specifications of our products are subject to change without notice. Please ask necessary questions before you order.

Laser products are warranted to conform to ERDI’ s published specifications and to be free from defects in materials and workman-ship for a period of twelve months starting on the shipping date. ERDI will repair or replace (at our decision) ASAP without charge, any part(s) found to be defective during the warranty period.

Our warranties do not cover damages due to misuse, negligence or accidents or due to installations, repairs or adjustments not authorized by ERD.

If a problem occurs and can’t be solved by phone, fax, or email, you may return products to ERDI. Please contact us for a Return Material Authorization (RMA) number prior to shipping the laser. We’ll provide you details on shipping and customs information with the RMA number. All lasers and components should be carefully packed to avoid damage during shipment.

Laser Ranging Technology – Laser Pulse Ranging Knowledge Sharing

Laser Ranging Technology - Laser Pulse Ranging Knowledge Sharing

Laser ranging is a major category of laser technology applications. In production practices and scientific research, the issue of measuring distance often arises. For example, in geodetic surveying and geological exploration, it is necessary to measure the distance between two hilltops; when building a bridge, it is necessary to measure the interval between the two sides of a river; in military applications, aiming of artillery positions and long-range strikes are inseparable from accurate.

Photoelectric ranging is an early proposed physical ranging method. Photoelectric rangefinders were made and practically applied to measure the distance between ground targets in the late 1940s and early 1950s. However, due to limitations in the brightness and monochromaticity of the light source, the photoelectric rangefinder did not develop significantly at that time.

In the early 1960s, the emergence of lasers greatly promoted the development of photoelectric rangefinders. Lasers have high brightness, good monochromaticity, strong directionality, and narrow beams, making them ideal light sources for photoelectric rangefinders.

Compared with other rangefinders (such as microwave rangefinders and photoelectric rangefinders), laser rangefinders have the characteristics of long detection distance, high ranging accuracy, strong anti-interference ability, good confidentiality, small size, light weight, and high repetition frequency.

After successfully conducting laser ranging on the moon and artificial satellites, various civilian and military laser rangefinders have undergone several generations of research and improvement, and are now widely used in practical work.

Unlike laser length measurement, the lengths that can be measured by laser ranging are much greater.

If classified by range, laser ranging can be roughly divided into three categories: short-range laser rangefinders, with a range of only within 5km, suitable for various engineering surveys; medium and long-range laser rangefinders, with a range of five to tens of kilometers, suitable for geodetic control surveys and earthquake prediction; and long-range laser rangefinders, used to measure the distance of missiles, satellites, the moon, and other spatial targets.

Next, I will introduce the knowledge of laser ranging technology in detail, including the principles of laser ranging technology, the use of laser ranging technology, and the application of laser ranging technology.

Pulse laser rangefinder