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Good quality products, trusted supplier!

—— VIctor Osorhan

Outstanding product quality & service! We have worked with a lot of companies in Asia, many times the quality is great but the communication is too complicated. In case of Shifang Yuantong Optical Instrument the quality of the products is excellent AND the communication is outstanding easy and fast

—— Matthias Frisch

8x33 Monocular ED I ordered only one as sample. They shipped fast, had in stock. It is of good quality, very sharp optics, focus smooth and fast.

—— Giorgio Pattarini

Very high quality product! Supplier is attentive, knows the business and is always willing to help. Very pleased with the whole process.

—— Ana Silva

Binocular 8x40 Porro FOV 140m/1000m I ordered one piece as sample, and they shipped promptly from stock. Well made product, very sturdy; the prism are mounted into a cradle inside the housing. The objective is recessed and protected. Focusing wheel is a bit hard but precise; eyepieces are stable. Good optics with green coatings, prisms with black c

—— Milucci Christian

I just wanted to say THANK YOU! :-) ^_^You've always responded to all my questions very promptly and with all the details i asked!You worked with me offering different options when appropriate:shipping options, or neck strap options,or boxes, You've always nice to me! so Thank you!!!

—— Ann Byrne

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Company News
china latest news about Instructions for use of infrared night vision device

Instructions for use of infrared night vision device

[2022-12-02 14:04:36]
There are many types of infrared night vision devices, but they are basically composed of optical systems, image tubes or low-light tubes, power supplies and power supply systems. Of course, the active infrared night vision device should also be equipped with an infrared searchlight, of which the ... Read More
china latest news about How can a telescope see an ant from 10,000km away clearly?

How can a telescope see an ant from 10,000km away clearly?

[2022-11-09 10:12:31]
Suppose an ant is 1mm long, then if you observe it from 10,000km away, this ant is about 3×10-43times10^{-4} millicorniseconds!!! What is this concept? It is 100 times finer than the best current astronomical observation accuracy. For an ideal optical system, its maximum angular resolution S ≈ 1.220... Read More
china latest news about Telescope purchase knowledge

Telescope purchase knowledge

[2022-11-02 16:54:23]
About the magnification: each telescope is marked with the main parameters, such as 8x42 means the power is 8 times, the objective lens aperture 42mm. 6 times or less is generally low magnification, 6-10 times is medium magnification, 10 times or more is high magnification. Many people always think ... Read More
china latest news about Good advice on telescope selection for newbies

Good advice on telescope selection for newbies

[2022-10-21 10:44:47]
How to select binoculars 1, you need to know in advance what you are used for: watching shows, or hiking, or bird watching and stargazing, or balcony viewing. Different uses have different requirements on the volume and weight multiple of the telescope. 2, need to clearly inform the psychological ... Read More
china latest news about How to detect binoculars

How to detect binoculars

[2022-10-14 13:58:36]
1. Point the binoculars at the bright white wall, let the eyes view about 10cm from the eyepiece, the exit pupil brightness of good telescope is coordinated and uniform, the display is dark color around. If there are bright light shadows around the pupil, which appear to be square, it means the ... Read More
china latest news about How far can night vision goggles see at night?

How far can night vision goggles see at night?

[2022-09-29 16:03:20]
As a professional optoelectronic equipment, many people are at a loss before purchasing NVG(night vision goggles). The following will introduce some related introductory knowledge of night vision goggles, I believe it will be helpful for everyone to buy night vision goggles: When will night vision ... Read More
china latest news about How to choose an astronomical telescope?

How to choose an astronomical telescope?

[2022-09-24 10:07:12]
Depending on how you want to use it, observation or shooting (imaging), generally choosing a telescope based on two data: focal lengths and focal-to-diameter ratios (focal length/clear aperture, aperture, f). Don't look at some of the statements tens of thousands of times, it's pure nonsense. Eye ... Read More
china latest news about How to use the binoculars correctly

How to use the binoculars correctly

[2022-09-15 15:20:42]
1. Adjust the distance: adjust the distance between the two mirrors of the telescope until the left and right fields of view are a circular field of view. At this time, the distance between the exit pupils of the two mirrors is the same as the distance between the two exit pupils of the human eye. . ... Read More
china latest news about Getting Started - Basics of Astronomical Telescopes

Getting Started - Basics of Astronomical Telescopes

[2022-09-07 09:09:33]
①Horizontal type (theodolite): such as Celestron AZ series telescope Advantages: cheap, light weight, easy to carry, simple structure, easy to debug. Disadvantages: low adjustment accuracy, poor stability, unable to track celestial bodies, and unable to perform astrophotography. ②Equatorial Ceremony... Read More
china latest news about Getting Started - Basics of Astronomical Telescopes

Getting Started - Basics of Astronomical Telescopes

[2022-09-02 09:36:31]
The type of telescope (1) Refractor telescope The structure of the refracting telescope is as follows: The refracting telescope consists of two lenses: the objective lens fixed at the front end of the lens barrel (its diameter directly determines the performance of the telescope); the eyepiece can ... Read More
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