Because achromatic lenses focus colors at the same point, they allow the user to fully focus the image. Compared to uncorrected singlet lenses, achromatic lenses can produce clearer images, making it easier to observe and obtain more accurate perception.
When the achromatic lens was first introduced, it brought revolutionary changes to the imaging method. Despite the continuous improvement in the quality of lenses, achromatic lenses are still the main application in scientific and non scientific optical applications. Some advantages of an achromatic lens assembly include:
Improved image quality: An achromatic lens eliminates color bands and improves the brightness and clarity of the image. This is especially true for multicolor imaging.
Efficient optical transmission: Unlike a single linear lens, the coaxial performance of an achromatic lens does not decrease as the aperture size increases, allowing you to utilize the entire transparent aperture.
Cost effective production: Although achromatic lenses can be improved, these lenses are much more expensive. For most purposes, achromatic lenses can provide a significant amount of correction, making them a cost-effective way to obtain clear white light images.
In order to produce the desired color correction effect, achromatic lens manufacturers must use two or more types of optical glass with different wave dispersion amounts. Typically, this process involves concave lens elements with high dispersion and convex lens elements with low dispersion. Two lenses are installed so that the deformation of one lens closely counteracts the deformation of the other lens. This achromatic lens is called an achromatic double lens and is a common achromatic lens, although there are also triple lenses.
