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The principle of light transmission through the film

2022-12-16

In the previous section we described why lenses are coated, and in this section we continue with why coatings increase light transmission. Transmittance enhancement film is based on the fluctuation of light and interference phenomenon. If two light waves of the same amplitude and wavelength are ...
Coating Difference Between Resin lens and Glass lens

2022-12-08

One way to reduce the cost of OPTICS is to use resin lenses. What is the difference between the two compared to a optics with glass lenses?
How to use the astronomical telescope

2022-12-02

How to debug a finderscope？ 1. During the day, first aim the main lens barrel at a distant target (about 500 meters away), such as chimney, air conditioner outdoor unit, etc. Install a low-magnification eyepiece (such as a 20MM eyepiece) to find the target. After roughly aligning the mirror with the ...
The scope of application, application principle and characteristics of infrared thermal imager

2022-11-23

What is infrared thermal imaging? Infrared, also known as infrared radiation, refers to electromagnetic waves with a wavelength of 0.78 to 1000 microns. The part with a wavelength of 0.78 to 2.0 microns is called near-infrared, and the part with a wavelength of 2.0 to 1000 microns is called thermal ...
Why spotting scope can be used for watching the moon, astronomical telescope can not be used for bird watching

2022-11-09

I wonder if you have such a question, why spotting scope can be used for watching the moon, astronomical telescope can not be used for bird watching? And the magnification of astronomical telescope is higher than the birdwatching scope, so directly use astronomical telescope instead of spot scope in ...

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