WebA Cooke triplet projection lens for use in overhead projectors comprises two outer positive elements of an ophthalmic crown glass and one inner negative element of a light flint glass. The crown glass has a refractive index of roughly 1.523 and an Abbe value of 58.5. The flint has an index of less than 1.573 and an Abbe value of between 43 and ... WebHow to Optimize the Cooke Triplet with OpticStudio. We continue to study the Basic Shapes of Imaging Systems by using Zemax OpticStudio to design a Cooke Triplet lens. Show …

Petzval curvature versus image quality for the Cooke triplet

WebMar 1, 1990 · Petzval curvature plays an important role in the design of a triplet. Its value should be defined at the beginning of the design process, and along with the field of view, it will characterize the type of design. For these reasons, a look at the consequences of choosing various Petzval values is interesting. Different image quality criteria versus the … WebOther Cooke triplet issues • Aberrations are interlocked • Two fourth-order solutions depending on negative lens shape correcting SA • From parallel plate or plates • Tessar … pottery spinning classes near me

(PDF) Optimization of the Cooke triplet with various evolution ...

WebSep 1, 1999 · A Cooke triplet antenna used for near-field focusing is designed by a quasi-optical method. To design the Cooke triplet, we propose the quasi-optical method to reduce the aberration spot radius in ... WebSep 27, 1999 · Optimization of the Cooke triplet with various evolution strategies an the damped least squares is presented. All algorithms are described and their advantages and shortcomings are presented. After detailed presentation of the evolution strategies their adaptation to the optimization of optical systems are discussed. Analysis of the Cooke … WebExplanation of triplets from Fundamental Optical Design. The simplest design that is capable of correcting all of the seven Seidel aberrations over a wide field of view is the … pottery space