The difference between infrared lens and ordinary lens

The difference between infrared lens and ordinary lens lies in the working principle and application field.

Infrared lens is a lens specially designed for infrared spectral range, and its working principle is to use the characteristics of infrared radiation to image. Infrared radiation is an electromagnetic wave, and its wavelength range is usually between 0.75 micron and 1000 micron, which is beyond the visible range of human eyes. The infrared lens adopts special materials and optical design, which can capture and focus infrared radiation, thus realizing the shooting and analysis of infrared images. Ordinary lens is a lens used in the visible light range, and its working principle is to image by refracting and reflecting visible light. Ordinary lenses usually use transparent optical materials, such as glass or plastic, to focus visible light and transmit images to the photosensitive elements of the camera. Infrared lens is mainly used in the technical field of infrared imaging, such as infrared camera and infrared thermal imager. It can be used in night vision, thermal imaging, security monitoring, military reconnaissance and other fields. Ordinary lenses are widely used in general photography, camera shooting, telescopes and other fields to capture and record visible light images.