公开(公告)号：US11307426B2

公开(公告)日：2022-04-19

申请号：US17116984

申请日：2020-12-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Susumu Uragami ,  Hiroyuki Furuya ,  Akira Kurozuka ,  Yuta Yamamoto ,  Mitsutaka Yamaguchi ,  Yoshiro Kashiwabara

IPC: G09G5/00 ,  G02B27/01

Abstract: An image display apparatus includes: a light source; a screen on which an image is formed when light from the light source is applied thereto; an optical system configured to generate a virtual image by light from the screen; an actuator configured to move the screen in an optical axis direction; a support base supporting the actuator; and a dynamic damper installed on a non-movable part on the support base.

公开(公告)号：US11322057B2

公开(公告)日：2022-05-03

申请号：US17103771

申请日：2020-11-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Susumu Uragami ,  Yuta Yamamoto ,  Hiroyuki Furuya ,  Yoshiro Kashiwabara

IPC: G09G3/00 ,  B60K35/00 ,  G02B27/01

Abstract: An image display device includes: a light source; a screen on which an image is formed when light from the light source is applied thereto; an optical system configured to generate a virtual image by light from the screen; an actuator configured to move the screen in an optical axis direction; a position detector configured to detect a movement position of the screen; a servo circuit configured to cause the movement of the screen by the actuator to follow a target waveform on the basis of a signal from the position detector; and a correction circuit configured to reduce a deviation between a timing to move the screen by the servo circuit and a timing to form the image on the screen.

公开(公告)号：US20210088797A1

公开(公告)日：2021-03-25

申请号：US17116984

申请日：2020-12-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Susumu Uragami ,  Hiroyuki Furuya ,  Akira Kurozuka ,  Yuta Yamamoto ,  Mitsutaka Yamaguchi ,  Yoshiro Kashiwabara

IPC: G02B27/01

Abstract: An image display apparatus includes: a light source; a screen on which an image is formed when light from the light source is applied thereto; an optical system configured to generate a virtual image by light from the screen; an actuator configured to move the screen in an optical axis direction; a support base supporting the actuator; and a dynamic damper installed on a non-movable part on the support base.

公开(公告)号：US20210082326A1

公开(公告)日：2021-03-18

申请号：US17103771

申请日：2020-11-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Susumu Uragami ,  Yuta Yamamoto ,  Hiroyuki Furuya ,  Yoshiro Kashiwabara

IPC: G09G3/00 ,  G02B27/01 ,  B60K35/00

Abstract: An image display device includes: a light source; a screen on which an image is formed when light from the light source is applied thereto; an optical system configured to generate a virtual image by light from the screen; an actuator configured to move the screen in an optical axis direction; a position detector configured to detect a movement position of the screen; a servo circuit configured to cause the movement of the screen by the actuator to follow a target waveform on the basis of a signal from the position detector; and a correction circuit configured to reduce a deviation between a timing to move the screen by the servo circuit and a timing to form the image on the screen.

公开(公告)号：US09835859B2

公开(公告)日：2017-12-05

申请号：US15226123

申请日：2016-08-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroyuki Furuya ,  Takahisa Shiramizu ,  Susumu Uragami ,  Yoshiro Kashiwabara

IPC: G02B27/01 ,  G02B27/10 ,  H04N9/31

CPC classification number: G02B27/0101 ,  B60K2350/2052 ,  G02B27/0149 ,  G02B27/104 ,  G02B2027/0114 ,  G02B2027/0127 ,  G02B2027/014 ,  G02B2027/0159 ,  H04N9/3129

Abstract: An image display device includes a light source that emits a light beam, a screen, a scanning section that scans the screen with the light beam, an optical system, a drive section, and a screen drive circuit. The optical system generates a virtual image by using the light beam that has passed through the screen. The drive section moves the screen at least in parallel to a travel direction of the light beam. The screen drive circuit contains a drive signal table that stores an information group for use in generating a drive signal tailored to stop the screen at different stop locations over different stop periods. The screen drive circuit selects first information in the drive signal table which is associated with displaying of an image and supplies the drive section with a first drive signal generated from the first information.