Laser pointers, also known as laser pointers, pointing stars, etc., are pen-shaped transmitters designed to be simple and portable with visible lasers and processed into laser pointer modules (diodes). According to laser pointer light source and wavelength classification, there are mainly red light (λ=650～660nm, 635nm), green light (λ=515-520nm, 532nm), blue light (λ=445～450nm) and blue-violet light (λ =405nm) laser pointer. At present, the common red laser pointer on the market has a wide range of applications and can be used in daily reports, teaching demonstrations, product releases and other occasions; a few products are green laser pointers, which are suitable for outdoor sunlight or longer distances.
According to the laser type, it is mainly divided into ordinary physical laser pointer and digital laser pointer
Laser pointer reminder (precautions for use): laser pointer self-salvation
1. The harm of laser pointer
Thermal effect is the main cause of damage caused by laser pointers, and the main damage parts are eyes and skin. Once irradiated by a powerful laser pointer, it is likely to cause edema in the macular area and hemorrhage, causing rupture of the retinal photoreceptor cell structure, resulting in a significant decrease in vision, and often the damage will be permanent!
2. Matters needing attention
1. Children should try their best to avoid exposure to laser. Do not use laser to irradiate others, let alone look directly at the laser light source to avoid irreversible consequences.
2. Try to choose regular channels to purchase laser products such as laser pointers and children's laser guns.
3. Consumers are advised not to buy toys with laser shooting function or laser aiming function for children.
How to choose a laser pointer correctly?
1. Security
Improper use of laser may cause damage to the body. There are reports that substandard laser products can cause permanent insomnia! Therefore, when we buy, we must first consider safety. CFR (United States Federal Regulations) has very detailed regulations for laser products, and laser products are divided into the following levels:
The General Administration of Quality Supervision, Inspection and Quarantine has also issued warnings and consumer tips on the safety risks of laser pointer products: When purchasing, be sure to pay attention to the product description, pay attention to its radiation type, and radiation intensity! Guarantee purchase channels, guarantee quality and safety!
2. Functionality
Your needs determine what kind of product you need to choose, so the most important consideration when we buy is the functionality of the product. I think the most successful purchase must be to spend the most reasonable price and purchase a product with the most suitable performance to perfectly meet my needs. Many products often pack flashy features and guide users to buy. The same is true for the purchase of green laser pointer. You must first know what functions the laser pointer has? Then choose a reasonable choice according to your own needs to avoid excess performance.
Laser pointer performance introduction:
①Ordinary laser pointer; remote indication, changing starlight, smart zoom, waterproof and moisture-proof, bright laser
②PPT page turning pen; page turning, full screen/black screen, plug and play, integrated magnetic receiver, hyperlink, multi-system compatibility, smart battery reminder, highly sensitive 2.4G upgrade chip
③Digital laser pointer; LCD screen clear instructions, gesture control volume, spotlight, partial zoom, air mouse, voice recording, WeChat sharing, etc.
3. Budget
The general shopping guide will suggest that you choose a cost-effective product based on a reasonable budget, but here we need to add one thing to everyone, we must make a reasonable budget on the basis of understanding the product’s performance and market conditions, such a budget Is valuable. In other words, we cannot reduce the budget ignorantly and ignore the product quality. Our budget needs to have a reasonable reference standard!