When it comes to diffractive optics, you should rest assured to know it as a Fresnel lens or a Phase Fresnel lens. It may not be largely popular with high-quality still photographers. You may wonder about the appearance. Have you examined a refractive optic lens element? You may come across the smooth and polished finish of the surface. That is what you expect to see in a lens. However, with a Fresnel lens would offer you low-quality versions. It could be used in the rear-view magnifiers used in cars or other commercial vehicles and the lighthouse projectors.
Benefits offered by the diffractive optics lenses
A diffractive lens comprises concentric rings offering a saw-tooth appearance. Fresnel lenses are commonly used for high-quality precision optics. It would be inclusive of replacements for natural lenses in cataract surgery. It would also be used for professional-quality photographic lenses of the camera. You should rest assured that diffractive lenses have two major benefits. The foremost benefits would be the reduced size and weight of the camera lens. The diffractive components in the lenses are relatively lightweight and thin. They work alongside the refractive elements for reducing the physical size of the optical path.
Another benefit of a Fresnel lens would be its ability not to eliminate chromatic aberration or CA. You should rest assured that the phase of aberration could be relatively different from the refractive elements. Therefore, by using a careful design, you could cancel each other easily. The diffractive optics lenses are popular for exhibiting superb control over chromatic aberration.
Are there any drawbacks to using diffractive optics lenses?
You may also come across a few drawbacks of using the diffractive optics lenses. The foremost drawback is the higher cost. The major reason would be it is more challenging to undergo the manufacturing process. You may gather some evidence about the difficulty in controlling the optical quality as well. The light transmission and contrast efficiency are popular for working behind the conventional refractive optics. However, the favorable trend of lighter and thinner photographic equipment will make the diffraction optics largely popular with the people. It may not be popular, as of now, but with time, people would begin to accept the option for becoming a popular contemporary photographer.
Diffractive optics would become popular with the people for their largely known benefits with time. However, until then, you would be required to gather adequate knowledge about the benefits it offers to the potential photographers for transforming them into a professional high-quality contemporary photographer.