Understanding The Basics Of Aspheric Lens Choices
When your work demands precision optical lenses, size and shape are critical to the whole process. After all, the shape of the lens drives the light refraction. If you're new to these lenses, you may feel intimidated by all of the choices.
Plano-Concave Lens Types
If you need to balance the aberration caused by another lens in a structure, a plano-concave lens can do just that. They can take multiple input rays and bend them to create a divergence in the ray output. This provides a negative focal length, so you can then set the curve of the lens so that it points to the longest distance to reduce aberration.
Plano-Convex Lens Types
If you're trying to condense parallel rays of light into one focal ray, this may be the most effective choice. The asymmetrical design helps to control aberration. Set up the lens so that the curve is facing the longer distance to get the best results from the process.
Bi-Convex Lens Types
Bi-convex lenses are best used in structures where the image and the object you're working with are both equal distances from your lens. These lenses provide magnification that is balanced well enough to minimize any image distortion. The structure of these lenses are similar to the plano-convex lenses, because they have a positive focal length and they can focus parallel rays of light.
Bi-Concave Lens Types
Bi-concave lenses are most often used in areas where you're working with objects and images positioned equally around a converging beam. You can optimize your results with this lens by placing both the image and the object positioned at a similar focal length from the lens. These lenses have negative focal length, and the radius of the curve is identical on each side of the lens. That means you can use it to help expand existing light in a design.
These are only a few of the types of aspheric lenses you might need in your operation. A combination of several lens types may be the most effective for your final product. It may be easier to consult an aspheric lens manufacturer to assess your systems and determine which lenses will work best for your needs. Once you've chosen the lenses you need, though, make sure you also understand the care and cleaning needs. It's essential that they are handled properly to get the correct results from each lens.
For more information, contact R. Mathews Optical Works, Inc. or a similar organization.