Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Reexamination Certificate
2006-05-02
2006-05-02
Imam, Ali (Department: 3735)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
C351S212000
Reexamination Certificate
active
07036933
ABSTRACT:
A model eye for an eye characteristic measuring device and a calibration method for the model eye. The model eye can have various aberrations and/or power characteristics to be formed by a combination of a refractive-type lens and a phase plate for adding aberration and can be used to confirm the accuracy of wavefront measurement or the like of the eye characteristic measuring device. The model eye includes an anterior eye lens forming a predetermined power to be given to the model eye, a diffusion surface diffusing and reflecting incident light, the diffusion surface being disposed at an image point position corresponding to the predetermined power in relationship to the anterior eye lens, and an aberration adding member giving a predetermined aberration to an area between the anterior eye lens and the diffusion surface. Power and aberration required for the model eye are formed by the anterior eye lens and the phase plate.
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Thibos et al., “Standards for Reporting the Optical Aberrations of Eyes,” V. Lakshminarayanan (Ed.) Trends in Optics and Photonics, Optical Society of America, Washington, DC, pp. 232-244.
Kirschkamp, T., et al., “Construction of a Model Eye to Simulate Purkinje Reflections for the Determination of the Radii of Curvature and of the Position of the Crystalline Lens of the Eye,” Biomedizinische Technik, vol. 66, No. 43, 1998, pp. 318-325.
Hirohara Yoko
Mihashi Toshifumi
Nakazawa Naoki
Yamaguchi Tatsuo
Foley & Lardner LLP
Kabushiki Kaisha Topcon
Sanders John R.
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