US 12,216,391 B2
Projector with rotatable projection lens
Masaru Amano, Saitama (JP); Yukiko Nagatoshi, Saitama (JP); Hironobu Kayano, Saitama (JP); and Kenji Ito, Saitama (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Dec. 27, 2023, as Appl. No. 18/397,876.
Application 18/397,876 is a continuation of application No. 17/518,122, filed on Nov. 3, 2021, granted, now 11,899,346.
Application 17/518,122 is a continuation of application No. 16/887,744, filed on May 29, 2020, granted, now 11,194,235, issued on Dec. 7, 2021.
Application 16/887,744 is a continuation of application No. PCT/JP2018/043789, filed on Nov. 28, 2018.
Claims priority of application No. 2017-230954 (JP), filed on Nov. 30, 2017; and application No. 2018-196769 (JP), filed on Oct. 18, 2018.
Prior Publication US 2024/0126155 A1, Apr. 18, 2024
Int. Cl. G03B 21/14 (2006.01); G02B 7/02 (2021.01); G02B 7/182 (2021.01); G02B 27/09 (2006.01); G03B 21/28 (2006.01); H04N 9/31 (2006.01)
CPC G03B 21/142 (2013.01) [G02B 7/021 (2013.01); G02B 7/182 (2013.01); G02B 27/0955 (2013.01); G03B 21/28 (2013.01); H04N 9/3102 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A projector comprising:
an image forming panel for displaying images;
a light source that illuminates the image forming panel;
a housing that houses the image forming panel and the light source, and includes a concave, a first surface, a second surface intersecting the first surface, and a third surface facing the second surface; and
a projection lens disposed in the concave and attached to the first surface, the projection lens including a first holding member through which light with a first optical axis passes, a first reflective member which bends the first optical axis to form a second optical axis, and a second holding member through which the light with the second optical axis passes,
wherein the projection lens is rotatable around the first optical axis between a first position where the second holding member faces along the long side direction of the first surface and a second position where the second holding member protrudes from the second surface in a side view, and
wherein the projector further comprises:
a drive unit that drives the projection lens between the first position and the second position;
an angular position sensor that detects an angular position of the projection lens around the first optical axis;
a power switch that functions as an operation switch for starting/stopping power supply to each part in the housing; and
a control unit that controls the drive unit to drive the projection lens from the first position to the second position based on a detection result of the angular position sensor in a case where the power switch is turned on, and that controls the drive unit to drive the projection lens from the second position to the first position based on the detection result of the angular position sensor in a case where the power switch is turned off.