Leica Camera Ag

Optische Werke G. Rodenstock

Jakob Bleicher

Achim Zirkel

Ernst Rothe

Wolfgang Riedel

Siegfried Hetz

Ulrich Matern

Alexandra Bleicher

Engelbert Hofbauer

Ingrid Schehrer

Marcus Deschauer

Stephan Albrecht

Manfred Knote

The present invention relates to an objective for photographic applications, comprising, in a sequence from an object side end to an image side end, a first lens group having a positive refractivity with at least one lens, a second lens group having a negative refractivity with a single lens, a third lens group having a negative refractivity with a single lens and a fourth lens group having a positive refractivity with at least one lens, wherein the lenses of the second and third lens groups each have a concave surface which face one another and define an air lens, wherein f1 is the overall focal length of the lenses of the second and third lens groups and f2 is the focal length of the air lens, and wherein the relationship 5.0&#x2264;f1/f2&#x2264;9.0 is true.

Photographic objective

The present invention relates to an optical lens system for a camera comprising in an order from an end at the object side to an end at the image side a first lens having a positive refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power, and a fourth lens having a negative refractive power, wherein the second and third lenses are each designed as meniscus lenses, wherein the surface of the second lens at the object side is convex and the surface of the third lens at the object side is concave. The invention further relates to an imaging system having an image sensor that has a plurality of light-sensitive elements arranged in rows and columns and having such an optical lens system.

Optical lens system and imaging system

Scanning system

Optical system for imaging the light from light sources

Growing community of inventors

Munich, Germany

Jakob Bleicher