NOUN
- a lens such that a parallel beam of light passing through it is caused to diverge or spread out
How To Use concave lens In A Sentence
- Such cases are known as nearsightedness and are corrected by having placed in front of the eyes concave lenses of the proper strength. The Science of Human Nature A Psychology for Beginners
- For medium and large optical concave lens into a set or single piece of fine grinding process.
- Concave lenses with minus or divergent power correct this refractive error and refocus the light rays on the correct point on the retina.
- Concave lenses with minus or divergent power correct this refractive error and refocus the light rays on the correct point on the retina.
- The invention provides a method with a concave lens focus as a welding heat source and a welding device thereof.
- A concave lens has been substituted for the collimator and slit, and besides other advantages, a great saving in length is secured by this change. Scientific American Supplement, No. 601, July 9, 1887
- An approach is proposed, which emphasizes the importance of concave lens which can scatter the laser and make it an ideal signal source to be captured by the CCD lens.
- Some are flared - that is, thicker at the rim than the center, like a concave lens.
- Similar double curvatures were used for concave lenses, and even more complicated corrections for astigmatism.
- Similar double curvatures were used for concave lenses, and even more complicated corrections for astigmatism.
