The Experts below are selected from a list of 3423 Experts worldwide ranked by ideXlab platform

Warren J Smith - One of the best experts on this subject based on the ideXlab platform.

  • modern Lens Design
    1992
    Co-Authors: Warren J Smith
    Abstract:

    Chapter 1: Introduction Chapter 2: Automatic Lens Design: Managing the Lens Design Program Chapter 3: Improving a Design Chapter 4: Evaluation: How Good Is This Design? Chapter 5: Lens Design Data Chapter 6: Telescope Objectives Chapter 7: Eyepieces and Magnifiers Chapter 8: Cooke Triplet Anastigmats Chapter 9: Split Triplets Chapter 10: The Tessar, Hellar, and Other Compounded Triplets Chapter 11: Double-Meniscus Anastigmats Chapter 12: The Biotar or Double-Gauss Lens Chapter 13: Telephoto Lenses Chapter 14: Reversed Telephoto (Retrofocus and Fish-Eye) Lenses Chapter 15: Wide-Angle Lenses With Negative Outer Elements Chapter 16: The Petzval Lens: Head-up Display Lenses Chapter 17: Microscope Objectives Chapter 18: Mirror and Catadioptric Systems Chapter 19: Infrared and Ultraviolet Systems Chapter 20: Zoom Lenses Chapter 21: Projection TV Lenses and Macro Lenses Chapter 22: Scanner/f-o, Laser Disk and Collimator Lenses Chapter 23: Tolerance Budgeting Chapter 24: Formulary GLOSSARY REFERENCES INDEX

Brian Blandford - One of the best experts on this subject based on the ideXlab platform.

  • opic a kit for rapid merit function construction for use with all versions of oslo including oslo edu
    Proceedings of SPIE the International Society for Society Engineering, 2005
    Co-Authors: Brian Blandford
    Abstract:

    The history of Lens Design software is sadly littered with accounts of excellent Programs which fell by the wayside for lack of support. Others evolved through various package formats to form the foundation of today's very successful commercial software. One example of this is the Imperial College Lens Design Program developed throughout the 1960s, 1970s and 1980s by Charles Wynne, Michael Kidger, Prudence Wormell, and others. This Program (best known as the Kidger Optics Ltd SIGMA) produced many excellent Designs over the years. One reason was that the ray patterns and weighting factors for operands in the default merit function had been carefully honed through experience, to produce rapid convergence on the global optimum from a likely starting point. This paper describes a suite of optimisation raysets and weighted operands written in the C-like OSLO compiled macro language CCL, and modeled on the Imperial College tradition. It is available for free download from http://www.lambdares.com/techsupport/kb/index.phtml. Its prime function is to provide a fast, easily understood introduction to merit function construction for the beginner. One version is for use on OSLO EDU, the free version of OSLO, which is also available from the Lambda Research Corporation website. This paper demonstrates how OPIC can be used to locate, from a remote starting point, the global minimum of the "monochromatic quartet," the Lens Design problem from the SPIE 1990 International Lens Design Conference.

Jane Bareau - One of the best experts on this subject based on the ideXlab platform.

Moore, Duncan T. - One of the best experts on this subject based on the ideXlab platform.

  • Design of axial gradient singlets utilizing a Fickian diffusion model
    'University of Rochester Press', 2017
    Co-Authors: Hoppe, Michael James, Moore, Duncan T., Douglas Scott - ) Kindred
    Abstract:

    Thesis (M.S.)--University of Rochester. College of Engineering and Applied Science. Institute of Optics.The manufacture of a Lens system containing a gradient index (GRIN) Lens or Lenses is a difficult process. The root of this difficulty is the gap in communication between the Lens Designer and the GRIN manufacturer. Typically the GRIN profile is described using coefficients of a polynomial expansion of the index of refraction. However, these abstract quantities give no insight or intuition as to how to manufacture the profile. In trying to bridge the gap between Designer and manufacturer, this thesis poses a new way for the Lens Designer to express the profile in terms that are consistent with that of a GRIN manufacturer. One way to manufacture GRIN is by a diffusion process, ion exchange. By allowing the computer to solve and optimize on a mathematical representation of diffusion, the resultant profile, and more importantly, the resultant Design will more closely depict the final production Lens. A method to solve the diffusion equation and link it to a common Lens Design Program, Code V™ is offered. Several Lenses containing theoretical axial gradients are optimized and their performances were evaluated. In addition, an empirical diffusion model is developed based on a known glass system and a singlet is optimized containing an axial gradient calculated using this diffusion model

  • Integration of the Design and manufacture of gradient-index optical systems
    'University of Rochester Press', 2017
    Co-Authors: Bentley, Julie L., Moore, Duncan T.
    Abstract:

    Thesis (Ph. D.)--University of Rochester. Institute of Optics, 1995.Modern manufacturing incorporates fabrication constraints and quality control into the initial product Design to create competitive, cost-effective products. This research offers a Design-for-manufacture approach to gradient-index Lens production. Fabrication parameters are coupled to a Lens Design Program to eliminate the traditional trial-and-error manufacturing process. The new approach allows a Lens Designer to Design a gradient-index optical system in terms of the actual fabrication parameters and then provides a set of experimental specifications to the materials scientist. The result is a more efficient and cost-effective manufacturing process for gradient-index optical systems. Traditional gradient-index Design methods were developed before many of the current gradient-index materials were available and are therefore unrelated to the material fabrication parameters. For example, the index of refraction profile is typically expressed by a polynomial expansion in optical Design. Once a Lens is Designed with this representation, the manufacturer must guess at fabrication parameters such as time and temperature to obtain the required 4 depth, and profile shape. As a result the Design-to-manufacture process is slow and iterative. Therefore, a more efficient Design-for-manufacture approach is offered by this research. First, a mathematical model for gradient-index fabrication by ion exchange is developed using Fickian diffusion theory. Second, an experimental procedure is developed to test this model against experimental results for several different diffusion times and temperatures in both axial and radial sample geometries. In particular, empirical diffusion models are developed for Li+ for Na+ and Na+ for Li+ ion exchange in alumina silicate glasses, alumina borate glasses, and titania silicate glasses. Third, the model is integrated with a Lens Design Program to allow optimization on diffusion parameters and several sample Designs are presented which compare the old Design procedure with this new method of Design. Thus, with the completion of this research, a Lens Designer can now choose from a realistic set of gradient index glasses and, in turn, generate a complete set of experimental specifications for the production of the gradient

Peter P Clark - One of the best experts on this subject based on the ideXlab platform.