Meniscus lens
CVI Melles Griot
* Use in combination with LAP to obtain f/3.3 relative aperture
* Air-spaced design for medium- to high-energy VIS-NIR laser applications
* Mounts easily onto post with 8-32 and M4 x .7 tap with companion LAP when selected with the Post Mount type Housing
The CVI Melles Griot APM series aplanatic meniscus lenses shorten the focal length of the LAP series positive laser aplanats while maintaining the minimization of the aberrations inherent in LAP series lenses. An LAP/APM combination is an f/3.3 focal system made up of reasonably priced standard components.
The APM lens acts to shorten the combined focal length of the system without introducing additional coma or spherical aberration. To introduce no spherical aberration or coma, the APM lens design must be matched to the spherical wavefront generated by the preceding LAP lens. This requirement determines the front and back radii and center thickness of the meniscus lens. Also, the APM lens must be properly spaced from its companion laser aplanat. Therefore, APM and LAP lenses are used in pairs. CVI Melles Griot provides each APM lens premounted in a housing that assures proper spacing and orientation with its paired LAP lens. APM lenses can be ordered with their companion laser aplanats or separately. This gives you the ability to change the focal length of an existing system at a later time.
