The Experts below are selected from a list of 21 Experts worldwide ranked by ideXlab platform

Gabor Kovacs - One of the best experts on this subject based on the ideXlab platform.

  • Optics
    2016
    Co-Authors: Peter Kallo, Gabor Kovacs, Member Spie, Egri Jozsef Str
    Abstract:

    Abstract. Based on the analysis of known, corrected, classical triplet type objectives and given the basic specification requirements, diagrams of the constructional length and image distance of their equivalent thin lens systems are prepared. By keeping the constructional length and image distance constant and applying simple formulas, the focal lengths and air gaps of the thin lens triplet variations can be generated. These variations can be used for selection based on any criteria, such as, for example, the Petzval Sum. According to the original description of the Petzval Sum, to our computational experiences and to the examples given, which were the results of precise corrections, we concluded that also in case of triplets, the designer should target the minimal Petzval Sum, which is constrained only by the basic specification data. Subject terms: thin lens systems; Petzval Sum; triplets; third-order analysis. Optical Engineering 32(10), 2505-2509 (October 1993). 2. For larger relative aperture, smaller field angle, and smaller relative aperture, larger field angles belong (we return to this issue later). Note that the basic specification data shown in Fig. 2 offer a very good basis for determining the thin lens systems of triplets by selecting the constructional length and the image distance.

  • Petzval Sum in triplet design: trend or optimum value?
    Optical Engineering, 1993
    Co-Authors: Peter Kallo, Gabor Kovacs
    Abstract:

    Based on the analysis of known, corrected, classical triplet type objectives and given the basic specification requirements, diagrams of the constructional length and image distance of their equivalent thin lens systems are prepared. By keeping the constructional length and image distance constant and applying simple formulas, the focal lengths and air gaps of the thin lens triplet variations can be generated. These variations can be used for selection based on any criteria, such as, for example, the Petzval Sum. According to the original description of the Petzval Sum, to our computational experiences and to the examples given, which were the results of precise corrections, we concluded that also in case of triplets, the designer should target the minimal Petzval Sum, which is constrained only by the basic specification data.

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

  • Optics
    2016
    Co-Authors: Peter Kallo, Gabor Kovacs, Member Spie, Egri Jozsef Str
    Abstract:

    Abstract. Based on the analysis of known, corrected, classical triplet type objectives and given the basic specification requirements, diagrams of the constructional length and image distance of their equivalent thin lens systems are prepared. By keeping the constructional length and image distance constant and applying simple formulas, the focal lengths and air gaps of the thin lens triplet variations can be generated. These variations can be used for selection based on any criteria, such as, for example, the Petzval Sum. According to the original description of the Petzval Sum, to our computational experiences and to the examples given, which were the results of precise corrections, we concluded that also in case of triplets, the designer should target the minimal Petzval Sum, which is constrained only by the basic specification data. Subject terms: thin lens systems; Petzval Sum; triplets; third-order analysis. Optical Engineering 32(10), 2505-2509 (October 1993). 2. For larger relative aperture, smaller field angle, and smaller relative aperture, larger field angles belong (we return to this issue later). Note that the basic specification data shown in Fig. 2 offer a very good basis for determining the thin lens systems of triplets by selecting the constructional length and the image distance.

  • Petzval Sum in triplet design: trend or optimum value?
    Optical Engineering, 1993
    Co-Authors: Peter Kallo, Gabor Kovacs
    Abstract:

    Based on the analysis of known, corrected, classical triplet type objectives and given the basic specification requirements, diagrams of the constructional length and image distance of their equivalent thin lens systems are prepared. By keeping the constructional length and image distance constant and applying simple formulas, the focal lengths and air gaps of the thin lens triplet variations can be generated. These variations can be used for selection based on any criteria, such as, for example, the Petzval Sum. According to the original description of the Petzval Sum, to our computational experiences and to the examples given, which were the results of precise corrections, we concluded that also in case of triplets, the designer should target the minimal Petzval Sum, which is constrained only by the basic specification data.

Norman J Rumsey - One of the best experts on this subject based on the ideXlab platform.

  • method for deriving the complete solution set for three mirror anastigmatic telescopes with two spherical mirrors
    Journal of The Optical Society of America A-optics Image Science and Vision, 2002
    Co-Authors: Andrew Rakich, Norman J Rumsey
    Abstract:

    The “plate-diagram” method of quantifying and manipulating the Seidel aberrations of an optical system has been used to develop a procedure that has successfully determined the complete solution set of three-mirror anastigmats in which two surfaces are left strictly spherical. The procedure also readily identified solutions in which the Petzval Sum is zero, and four distinct families of flat-field three-mirror anastigmats with two mirrors strictly spherical have thus been found. The success of the method is strong support for the argument that algebraic approaches to optical design can yield results distinctly superior to currently favored optimization-based design methods, at least for some types of optical systems.

Ireland Michael - One of the best experts on this subject based on the ideXlab platform.

  • The Gemini High-Resolution Optical SpecTrograph (GHOST) bench spectrograph optical design
    'SPIE-Intl Soc Optical Eng', 2018
    Co-Authors: Pazder John, Burley Greg, Robertson Gordon, Sheinis Andrew, Zhelem Ross, Ireland Michael
    Abstract:

    Gemini High-Resolution Optical SpecTrograph (GHOST) is a fiber-fed spectrograph being developed for the Gemini telescope. GHOST is a white pupil échelle spectrograph with high efficiency and a broad continuous wavelength coverage (363-1000nm) with R>50,000 in two-object mode and R>75,000 in single-object mode. The design incorporates a novel zero-Petzval Sum white pupil relay to eliminate grating aberrations at the cross-dispersers. Cameras are based on non-achromatic designs with tilted detectors to eliminate the need for exotic glasses. This paper outlines the optical design of the bench-mounted spectrograph and the predicted spectrograph resolution and efficiency for the spectrograph

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