公开(公告)号：US11619811B2

公开(公告)日：2023-04-04

申请号：US17484905

申请日：2021-09-24

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Fumihito Inukai ,  Toshiya Mori ,  Masanaga Tsuji ,  Ken′ichi Kasazumi ,  Yukihiro Chokyu

IPC分类号： G02B27/01 ,  B60W40/10 ,  G09G5/38

摘要： An image display system includes: an image projection unit that projects and displays an image on a display target for a moving body; a posture angle calculation unit that calculates a posture angle for the moving body on the basis of chronological data for acceleration detection values for the acceleration of the moving body in a prescribed time period; and a display control unit that controls the display position at which the image is projected and displayed on the display target, in accordance with the posture angle calculated by the posture angle calculation unit. The acceleration detection values include bi-directional components. The posture angle calculation unit excludes acceleration detection values from the chronological data used when calculating the posture angle, said acceleration detection values being included in an exclusion time period which has a ratio for the bidirectional components, in the prescribed time period, that is outside a prescribed range.

公开(公告)号：US10670780B2

公开(公告)日：2020-06-02

申请号：US16068956

申请日：2017-01-10

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Ken′ichi Kasazumi ,  Toshiya Mori ,  Kosuke Kubota ,  Masahito Ogata ,  Hiroaki Okayama ,  Satoshi Kuzuhara

IPC分类号： G02B27/14 ,  G02B3/08 ,  B60K35/00 ,  G02B27/01 ,  G01C21/36

摘要： The present invention provides a Fresnel lens that can reduce generation of concentric stray light. The Fresnel lens includes a sawtooth corrugated face that is formed by alternately disposing a first face inclined relative to optical axis A and a second face substantially parallel to optical axis A, and a light shielding mask is formed at a position corresponding to the second face.