×

Optical system for monitor cameras to be mounted on vehicles

  • US 5,448,319 A
  • Filed: 09/21/1993
  • Issued: 09/05/1995
  • Est. Priority Date: 09/22/1992
  • Status: Expired due to Term
First Claim
Patent Images

1. An optical system for a motor vehicle comprising:

  • a support adapted to be mounted on a motor vehicle;

    a camera body constructed and arranged to be mounted on said support;

    a photographic lens system disposed in said camera body, said photographic lens system including a first lens assembly disposed on the object side of the lens system and having a negative refractive power, and a second lens assembly disposed on the image side of said lens system and having a positive refractive power,an image pickup device disposed in said camera body and having a light receiving surface arranged to be disposed substantially parallel with respect to a surface on which the vehicle rests when the support is mounted on said vehicle; and

    a reflecting member disposed in said optical system and operable to deflect a visual field toward said light receiving surface of said image pickup device;

    said photographic lens system satisfying the following condition (1);

    
    
    space="preserve" listing-type="equation">0.6<

    f/D<

    1.2 (1)wherein the reference symbol f represents a focal length of said photographic lens system and the reference symbol D represents a diagonal length of a picture plane of said image pickup device.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×