US 2017/0371126 A1 · OPTICAL PROJECTION DEVICE AND PROJECTOR

Abstract

An optical projection device, which effectively suppresses variation in aberration due to irregularities in installation positions of lens groups which form an optical projection system, and a projector which includes the optical projection device are provided. In a lens group, which includes a diaphragm, in an optical projection device which includes a plurality of lens groups, a lens frame is divided between the diaphragm and a lens which is adjacent to the diaphragm, one lens frame which is acquired through the division includes an adjustment portion, which maintains a position of an optical axis to be adjusted, with respect to the other lens frame which is acquired through the division.

Claims11

Dependent claims

An optical projection device which projects incident image light comprising:

a plurality of lens groups;
and
a plurality of lens frames that accommodate the lens groups,
wherein the optical projection device projects incident image light, has a lens frame which is divided between the diaphragm and a lens which is adjacent to the diaphragm, and
wherein one of lens frames, which are acquired through the division, includes an adjustment portion, which maintains a position of an optical axis to be adjusted, with respect to the other of lens frames which are acquired through the division.

2 more elements

Dependencies are inferred from the claim text.

Optical projection device and projector

Life of this patent

Optical projection device and projector

Life of this patent

Abstract

Claims11