Title:
投影装置および投影方法
Document Type and Number:
Japanese Patent JP6913173
Kind Code:
B2
Abstract:
Provided are a projection apparatus and a projection method capable of uniformly projecting a projection image, in which blurring is suppressed, onto a projection target having projected and recessed portions outside the focal depth of a projection lens by using the afterimage effect. The projection apparatus includes: a light source; a projection image generation unit; a projection lens that projects a projection image generated by the projection image generation unit onto a projection target having projected and recessed portions, where a defocus optical transfer function at a specific frequency has two or more local maximum values and a second largest local maximum value is equal to or greater than 0.5 times a first largest local maximum value; an oscillation mechanism that oscillates the projection lens in a direction of an optical axis T; and a control unit that controls an amplitude and a period of the oscillation mechanism.
Inventors:
Iwasakizaki Tatsuro
Kishine Keinobu
Kishine Keinobu
Application Number:
JP2019544396A
Publication Date:
August 04, 2021
Filing Date:
August 10, 2018
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G03B21/14; G03B21/00; H04N5/74
Domestic Patent References:
| JP2016149618A | ||||
| JP2013516827A | ||||
| JP2009524849A | ||||
| JP2016080954A |
Foreign References:
| WO2017134781A1 | ||||
| US20150288936 | ||||
| EP2919060A2 |
Attorney, Agent or Firm:
Kenzo Matsuura
Kazuki Ohara
Kiyoshi Matsumura
Norimasa Matsuura
Kazuki Ohara
Kiyoshi Matsumura
Norimasa Matsuura