18614348. CONVERTER LENS, INTERCHANGEABLE LENS, AND IMAGE PICKUP APPARATUS simplified abstract (CANON KABUSHIKI KAISHA)

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CONVERTER LENS, INTERCHANGEABLE LENS, AND IMAGE PICKUP APPARATUS

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

SHINYA Okuoka of Utsunomiya-shi (JP)

CONVERTER LENS, INTERCHANGEABLE LENS, AND IMAGE PICKUP APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18614348 titled 'CONVERTER LENS, INTERCHANGEABLE LENS, AND IMAGE PICKUP APPARATUS

Simplified Explanation:

The abstract describes a patent application for a converter lens that consists of three or more negative lenses and is designed to increase the focal length of an entire optical system. The average refractive index of the material used in all the negative lenses at the d-line wavelength is specified.

  • The converter lens includes three or more negative lenses.
  • It is intended to increase the focal length of the optical system.
  • The average refractive index of the material used in the negative lenses is defined at the d-line wavelength.

Key Features and Innovation:

  • Utilizes multiple negative lenses for focal length extension.
  • Specific refractive index of material at d-line wavelength for precise performance.
  • Enhances the overall optical system capabilities.

Potential Applications:

  • Photography equipment.
  • Telescopes.
  • Microscopes.

Problems Solved:

  • Limited focal length in optical systems.
  • Need for precise refractive index control.

Benefits:

  • Improved focal length capabilities.
  • Enhanced optical performance.
  • Greater precision in imaging.

Commercial Applications:

The technology can be utilized in various optical devices such as cameras, telescopes, and microscopes, enhancing their performance and capabilities in capturing detailed images.

Questions about Converter Lens:

1. How does the specific refractive index at the d-line wavelength impact the performance of the converter lens? 2. What are the potential challenges in implementing multiple negative lenses in the converter lens design?

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Original Abstract Submitted

A converter lens includes three or more negative lenses and increases the focal length of an entire system, in which an average refractive index Ndave at the d-line (wavelength of 587.56 nm) of a material of all the negative lenses included in the converter lens is defined.

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