US 12,443,017 B2
Magnification adjustable projection system using movable lens plates
Paul Gerard Dewa, Newark, NY (US); Paul Francis Michaloski, Rochester, NY (US); and Mark Christian Sanson, Macedon, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Nov. 2, 2022, as Appl. No. 17/979,348.
Claims priority of provisional application 63/274,684, filed on Nov. 2, 2021.
Prior Publication US 2023/0137707 A1, May 4, 2023
Int. Cl. G02B 15/14 (2006.01); G02B 3/06 (2006.01); G03F 7/00 (2006.01)
CPC G02B 15/142 (2019.08) [G02B 3/06 (2013.01); G03F 7/70183 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A magnification adjustable projection system comprising:
an imaging system having an object or image space;
a first pair of cylindrical lens plates located within the object or image space for contributing a first amount of magnification power to the imaging system, wherein the first pair of cylindrical lens plates includes a first cylindrical lens plate linearly movable relative to a second cylindrical lens plate;
a second pair of cylindrical lens plates located within the object or image space in optical alignment with the first pair of cylindrical lens plates, the second pair of cylindrical lens plates contributing a second amount of magnification power to the imaging system, wherein the second pair of cylindrical lens plates comprises a third cylindrical lens plate linearly movable relative to a fourth cylindrical lens plate, wherein the first pair of cylindrical lens plates are separated along the optical axis relative to the second pair of cylindrical lens plates;
a first actuator that adjusts a first distance between the first cylindrical lens plate and the second cylindrical lens plates for adjusting the first amount of magnification power; and
a second actuator that adjusts a second distance between the third cylindrical lens plate and the fourth cylindrical lens plate for adjusting the second amount of magnification power, wherein the first pair of cylindrical lens plates has a first cylindrical transverse axis that extends substantially normal to an optical axis of the imaging system and the second pair of cylindrical lens plates has a second cylindrical transverse axis that extends substantially normal to the optical axis in the imaging system, wherein the first and second pairs of cylindrical lens plates are oriented such that the first cylindrical transverse axis is approximately 45° relative to the second cylindrical transverse axis.