Patent ID: 11892628
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A video display system in a moving body that allows a user of the moving body to view, as a virtual image, an image projected on a screen, the video display system comprising:
the screen on which the image to be viewed by the user as the virtual image is projected;
a light source that emits laser light;
a scanner that projects the image onto the screen by biaxially scanning the laser light onto the screen; and
a controller that: generates the image and controls the light source using an image signal for causing the image generated to be projected onto the screen by the laser light; and receives an input of sensing information measured using a sensor and indicating a brightness of an external environment of the moving body or a temperature of the light source, and controls the scanner in accordance with the sensing information input,
wherein when the sensing information indicates a first brightness or a first temperature outside a given temperature range, the controller causes the scanner to reduce an amplitude of the biaxial scanning in at least one axial direction of the biaxial scanning to a smaller value than when the sensing information indicates a second brightness darker than the first brightness or a second temperature within the given temperature range, and
when the sensing information indicates the first brightness or the first temperature outside the given temperature range, the controller generates the image by enlarging an image of a same type displayed at a same position in the virtual image, regardless of the first brightness or the first temperature indicated by the sensing information, in the axial direction, in which the amplitude of the biaxial scanning is to be reduced by the scanner, to a greater size than when the sensing information indicates the second brightness or the second temperature within the given temperature range.