3 Advantages Of Aspheric Lenses
Lenses are used in many different industries, with many different applications within the industries. However, some companies have a hard time determining which types of lenses are best for their applications. Many people simply choose the spherical lenses because they tend to be cheap since they are easy to manufacture. These lenses are not the best for all applications, especially those that require very detailed work. Many companies have decided to look into these three advantages of aspheric lenses because they reduce some of the problems that spherical lenses present.
1. Reduces Spherical Aberration
Spherical aberration is when the image that is seen through a spherical lens is slightly warped so that there is no way that it can be seen in fine detail. This is a defect that is due to the shape of the lens itself. Spherical lenses have a distinct curve that can blur the outer edges of the lens, or can make anything in front of the lens seem misshapen. Aspheric lenses don't have any of these problems because they do not have that distinct curve. This means that there are no aberrations and anything that is seen through the lens will be much more clear. This allows for more accurate testing and vision.
2. Reduces the Number of Lenses Needed
Another problem that often results with spherical lenses is that the aberration requires there to be many lenses, rather than just the one. This can be an issue because it requires the machinery that uses the lens to be large enough to accommodate multiple lenses. It also significantly drives up costs. Using aspheric lenses can reduce the size of the machinery using the lens and keep costs under control. It is often the case that a single aspheric lens can provide enough clarity and focusing power that it can replace all of the spherical lenses being used.
3. Decreases the Frequency of Required Collimating
Collimating your lenses is when you make sure that any beams of light going through your lenses are perfectly parallel and do not intersect. This is critical because if the light does not go straight in through the lens, anything you see through the lens will be distorted. Spherical lenses need to be collimated more often than aspheric lenses because of their aberrations. This can cost a great deal of money because it has to be done by professionals. Using lenses that need to be collimated less often will reduce the overall cost of maintaining the machinery.
For more information about aspheric lenses and how they can fit your needs, contact an aspheric lens manufacturer such as R. Mathews Optical Works, Inc.