US 12,443,096 B2
Projector
Kaho Takeuchi, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Mar. 16, 2023, as Appl. No. 18/184,784.
Claims priority of application No. 2022-042275 (JP), filed on Mar. 17, 2022.
Prior Publication US 2023/0296969 A1, Sep. 21, 2023
Int. Cl. G03B 21/14 (2006.01); G03B 21/00 (2006.01)
CPC G03B 21/142 (2013.01) [G03B 21/006 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A projector comprising:
a light modulation device forming a projection image; and
a projection mechanism for enlarging and projecting a projection image light of the projection image output from the light modulation device, wherein
the projection mechanism has a first optical system, a second optical system located between the first optical system and the light modulation device, and a shift mechanism shifting the second optical system relative to the light modulation device,
the shift mechanism shifts the second optical system to a first position and a second position different from the first position in directions orthogonal to an optical axis of the second optical system,
when the second optical system is in the first position, the projection mechanism passes the projection image light through a first projection system including the second optical system and the first optical system and projects a first enlarged image of the projection image on a first projection position, and
when the second optical system is in the second position, the projection mechanism passes the projection image light through a second projection system including only the second optical system and projects a second enlarged image of the projection image on a second projection position different from the first projection position at an angle of view different from an angle of view of the first projection system.