Optical projection system
OwnerDavid R. Shafer, Wilhelm Ulrichinventors
Life of this patent
Estimating the term…
Abstract
An optical projection lens system comprising one lens with an aspherical surface and comprising a first bulge followed by a first waist followed by a second bulge, wherein the diameter of the second bulge is smaller than the diameter of the first bulge.
Claims19
An optical projection lens system comprising a tens with an aspherical surface and comprising
- a first bulge followed by
- a first waist followed by
- a second bulge,
- wherein the diameter of the second bulge is smaller than the diameter of the first bulge.
An optical projection lens system comprising a lens with an aspherical surface and comprising
- a first bulge followed by
- a first waist followed by
- a second bulge followed by
- a second waist followed by
- a third bulge
- wherein the diameter of the third bulge is at least 10%, especially 15%, greater than the diameter of the second bulge.
An optical projection lens system comprising in direction of ray
- a first lens group having positive refractive power
- a second lens group having negative refractive power
- a third lens group having positive refractive power
- a fourth lens group having negative refractive power and
- a fifth lens group having positive refractive power,
- wherein the second lens group consists of three lenses.
An optical projection lens system comprising a lens with an aspherical surface and comprising in direction of ray
- a first lens group having positive refractive power
- a second tens group having negative refractive power
- a third lens group having positive refractive power
- a fourth lens group having negative refractive power and
- a fifth lens group having positive refractive power,
- wherein the second lens group consists of three lenses.
An optical projection lens system comprising a lens with an aspherical surface and comprising
- a first bulge followed by
- a first waist followed by
- a second bulge,
- wherein the diameter of the second bulge is smaller than diameter of the first bulge, preferable more than 10%.
Dependencies are inferred from the claim text.