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CORRECTION LENS AND IMAGING APPARATUS

  • US 20200132970A1
  • Filed: 10/28/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/31/2018
  • Status: Active Grant
First Claim
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1. A correction lens used in an optical system in which a light-transmissive cover member having radii of curvature different from each other in a first direction perpendicular to an optical axis and a second direction perpendicular to the optical axis and the first direction is disposed on an object side,wherein radii of curvature of an image-side surface of the correction lens are different in the first direction and the second direction, andthe following condition is satisfied:


  • 0.0≤

    |R2S/R2L|<

    1.0 



    (1)whereR2S is a radius of curvature of the image-side surface of the correction lens in the first direction or the second direction and has a smaller absolute value, andR2L is a radius of curvature of the image-side surface of the correction lens in the first direction or the second direction and has a larger absolute value.

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