1. What is the difference between night vision glasses
and polarized glasses
1. The principle is different
Polarized glasses are based on It is manufactured by the principle of polarization of light, which disperses unwanted light, such as strong sunlight.
Night vision goggles are auxiliary observation tools based on night vision technology and with the help of photoelectric imagers. Night vision technology includes low-light night vision and infrared night vision.
2, the effect is different
The special effect of the polarizer is to effectively exclude and filter the scattered light in the beam, so that the light can be transmitted on the right track The axis is put into the visual image of the eye, so that the field of vision is clear and natural.
Low-light night vision goggles amplify weak light to make it appear clear in sight, so in the absence of light at all, low-light night vision goggles cannot see anything ; Active infrared night vision goggles can see things under any circumstances. If there is no infrared source, passive infrared night vision goggles cannot see things.
3. Different usage conditions
Polarizers can be used when driving, fishing, skiing, rain, etc. when there is strong reflection or strong light.
Night vision goggles are usually used at night and have great applications in transportation, military and other fields.
Second, How to choose night vision glasses
1. Lens material
The material of the lens affects the effect of protecting the eyes, so you should choose the polarized lens The made driving mirror can effectively reduce the glare of dazzling lights and car lights, and can also filter out excess light. When worn at night, the powerful light becomes soft, and the vision is clearer. It ensures the safety of drivers and friends and relieves eye fatigue. If possible, ask the salesperson to dim the light when purchasing, and feel the softness and clarity of the light after wearing the product.
2. The curvature of the glasses
The comfort of the polarized driver’s mirror depends on the curvature of the glasses. The bridge of the nose of Westerners is generally tall and straight, while the outline of the bridge of our oriental nose is round, so you can try it on when choosing, and after wearing it, you can feel whether it is easy to fall off or pinches your nose. The most important thing is to choose the glasses that suit us.
3. Nose pads for glasses
When drivers and friends buy night vision goggles, they should choose the kind of nose pads that are soft and rich It is elastic, so it will not make the nose of our driver friends feel uncomfortable.
4. Observe the temples
The flexibility of the driver’s temples is also very important. Check whether the temples are flexible and whether they can be adjusted in size to meet the According to the needs of different drivers and friends, the flexible temples will be easier to adjust, making driving friends feel more comfortable.
5. Frame material
You should choose driving glasses made of alloy material, which are very light, not heavy and strong , the ears will not be uncomfortable from wearing glasses for a long time.
6. Thickness of the lens
The thickness of the lens of the driver’s mirror affects the use of the glasses to a certain extent, and the glasses with thicker lenses can be more durable , to prevent the glasses from being stimulated and accidentally broken, and effectively protect the eyes of drivers and friends.