Display system and display device
According to one embodiment, a display system includes a display device that displays an image rearward of a vehicle, a first illuminance sensor that detects the brightness around the vehicle, and a second illuminance sensor that detects the intensity of the light emitted onto the front surface of the display device, and the display device includes a housing with an opening on the front side, an electro-optic layer with a transmissive-reflective layer that transmits a portion of incident light and reflects another portion of the incident light, the electro-optic layer being configured to vary the reflectivity of the incident light, a display placed on the rear side of the electro-optic layer and configured to display at least a portion of the rearward image of the vehicle, and a control circuit that controls the brightness of the display based on a value of at least one of first illuminance and second illuminance.
1. A display system that is placeable in a vehicle, the display system comprising:
an image capture device that captures an image rearward of the vehicle;
a display device that is coupled to the image capture device via a network, and receives at least a portion of the rearward image captured by the image capture device;
a first illuminance sensor that detects brightness around the vehicle; and
a second illuminance sensor that detects intensity of light emitted onto a front surface of the display device; wherein
the display device includes
a housing with an opening on a front side;
an electro-optic layer with a transmissive-reflective layer that transmits a portion of incident light and reflects another portion of the incident light, the electro-optic layer being configured to vary reflectivity of the incident light;
a display placed on a rear side of the electro-optic layer and configured to display at least the portion of the rearward image;
a control circuit that controls operation of the display device; and
an actuator placed in the housing and configured to switch a posture of the electro-optic layer between a first posture and a second posture,
the first posture is a posture that a driver of the vehicle views rearward of the vehicle by at least the portion of the rearward image displayed on the display,
the second posture is a posture that the driver views rearward of the vehicle by way of a mirror image that appears on the transmissive-reflective layer,
the control circuit
controls the display to display at least the portion of the rearward image when the posture of the electro-optic layer is in the first posture,
controls the display to display no image when the posture of the electro-optic layer is in the second posture, and
controls brightness of the display device based on a value detected by at least one of the first illuminance sensor and the second illuminance sensor, and
the display is visible to the driver through the electro-optic layer when the control circuit controls the display to display at least the portion of the rearward image.
2. The display system according to claim 1 , wherein
the first illuminance sensor is placed on the rear side of the housing, and
the second illuminance sensor is placed near the opening of the housing.
3. The display system according to claim 1 , wherein
the first illuminance sensor is placed in a body of the vehicle, and
the first illuminance sensor and the display device are coupled via a vehicle network.
4. The display system according to claim 1 , wherein each of the first illuminance sensor and the second illuminance sensor includes a silicon photosensor.
5. The display system according to claim 1 , wherein the actuator switches the posture of the electro-optic layer between the first posture and the second posture by changing a posture of the housing.
6. The display system according to claim 1 , wherein the actuator is coupled to the electro-optic layer and switches the posture of the electro-optic layer between the first posture and the second posture without changing a posture of the housing.
7. A display device placeable within interior of a vehicle, the display device comprising:
a housing with an opening on a front side;
a first illuminance sensor that detects a first illuminance indicating brightness around the vehicle;
a second illuminance sensor that detects a second illuminance indicating intensity of light emitted on a front surface of the display device;
an electro-optic layer with a transmissive-reflective layer that transmits a portion of incident light and reflects another portion of the incident light, the electro-optic layer being configured to vary reflectivity of the incident light;
a display placed on a rear side of the electro-optic layer and configured to display at least a portion of a rearward image;
a control circuit that controls operation of the display device; and
an actuator placed in the housing and configured to switch a posture of the electro-optic layer between a first posture and a second posture, wherein
the first posture is a posture that a driver of the vehicle views rearward of the vehicle by at least the portion of the rearward image displayed on the display,
the second posture is a posture that the driver views rearward of the vehicle by way of a mirror image that appears on the transmissive-reflective layer,
the control circuit
controls the display to display at least the portion of the rearward image when the posture of the electro-optic layer is in the first posture,
controls the display to display no image when the posture of the electro-optic layer is in the second posture, and
controls brightness of the display device based on a value of at least one of the first illuminance and the second illuminance, and
the display is visible to the driver of the vehicle through the electro-optic layer when the control circuit controls the display to display at least the portion of the rearward image.
8. The display device according to claim 7 , wherein the actuator switches the posture of the electro-optic layer between the first posture and the second posture by changing a posture of the housing.
9. The display device according to claim 7 , wherein the actuator is coupled to the electro-optic layer and switches the posture of the electro-optic layer between the first posture and the second posture without changing a posture of the housing.
10. The display device according to claim 7 , wherein
the first illuminance sensor is placed on the rear side of the housing, and
the second illuminance sensor is placed near the opening of the housing.
11. The display device according to claim 7 , wherein the display is coupled to an image capture device that captures the rearward image via a network.
12. The display device according to claim 7 , wherein each of the first illuminance sensor and the second illuminance sensor includes a silicon photosensor.