What is the difference between color laser coaxial displacement meter and spectral confocal sensor? Spectral confocal sensors and color laser coaxial displacement meters work on the same principle, only because different manufacturers have redefined their products when promoting them. Today, the spectrometer technology spectral confocal manufacturers will introduce you to the color laser coaxial displacement meter and spectral confocal sensor:

Both color laser coaxial displacement meter and spectral confocal sensor are based on the principle of spectral confocal. Visible light passes through the lens and is dispersed into a spectrum of seven colors: red, orange, yellow, green, blue, indigo, and purple. Then the reflected wavelength is converted into the corresponding displacement value by the reflection principle.

As we all know, natural sunlight belongs to white light. White light is not the purest form of light, but is made up of many monochromatic lights. Light may have angular deviations when propagating in different media, but under actual white light irradiation, single-line light will have multiple refractions in different media.

For different monochromatic light, the refractive index of the optical material (lens) is different, that is, the shorter the refractive index, the greater the refractive index, and for different wavelengths, the smaller the refractive index (which is also the reason why different telescopes have the so-called chromatic difference). The same thin lens has different focal lengths for different monochromatic light, and each monochromatic light has a different focal length. Depending on the wavelength of the colored light, their image points are arranged on the optical axis from near to far, away from the lens (different monochromatic light has different wavelengths), so imaging produces what is called chromatic lens error.

Chromatic aberration lens errors cause imaging to produce color spots or halos. In photographic equipment, special treatment should be performed to minimize imaging problems caused by chromatic aberration lens errors. Common elimination methods include double gluing systems and double separation systems. Shenzhen Liyi Technology Co., Ltd. is a professional production and sales of displacement sensor, laser displacement sensor, Angle displacement sensor, spectral confocal sensor company, in need of friends can call to consult Liyi fiber coaxial displacement sensor manufacturers. Welcome your call!