Head up display system and control method thereof, and vehicle

A head up display system, comprising:

• an imaging device group, a concave reflective element, a directional imaging device and a processor, wherein the imaging device group comprises at least one single-layer imaging device;
• the directional imaging device comprises a light source device, a direction control element, a diffusing element and a light modulating layer;
• the processor is respectively connected with the directional imaging device and the at least one single-layer imaging device in the imaging device group;
• the direction control element is configured to converge light emitted by the light source device;
• the diffusing element is configured to diffuse converged light that is emergent from the direction control element, so that the converged light forms a light beam for forming a light spot;
• and the light modulating layer is configured to modulate the light beam for forming the light spot, so that the light beam is formed into directional imaging light;
• the at least one single-layer imaging device is configured to emit imaging light incident to the concave reflective element;
• the concave reflective element is configured to reflect the imaging light;
• and
• the processor is configured to:
• determine to-be-displayed target information and a target imaging device, and control the target imaging device to display the to-be-displayed target information;
• wherein the target imaging device is one or more imaging devices selected from a group consisting of the directional imaging device and the at least one single-layer imaging device in the imaging device group;
• wherein the head up display system further comprises a first transflective element, the first transflective element is capable of transmitting light having a first characteristic and reflecting light having a second characteristic;
• the imaging device group comprises a first single-layer imaging device capable of emitting first imaging light and a second single-layer imaging device capable of emitting second imaging light;
• the first imaging light has the first characteristic, and the second imaging light has the second characteristic;
• the first transflective element is configured to transmit the first imaging light and reflect the second imaging light;
• or
• wherein, the head up display system further comprises a first transflective element and a second transflective element, the first transflective element is capable of transmitting light having a first characteristic and reflecting light having a second characteristic;
• the imaging device group comprises a first single-layer imaging device capable of emitting first imaging light and a second single-layer imaging device capable of emitting second imaging light;
• the first imaging light has the first characteristic, and the second imaging light has the second characteristic;
• the first transflective element is configured to transmit the first imaging light and reflect the second imaging light;
• the imaging device group further comprises a third single-layer imaging device capable of emitting third imaging light;
• the third imaging light has a third characteristic;
• the second transflective element is configured to transmit the first imaging light having the first characteristic and reflect the third imaging light having the third characteristic;
• the first transflective element is further configured to transmit the third imaging light having the third characteristic imaging light;
• or
• the second transflective element is configured to transmit the second imaging light having the second characteristic and reflect the third imaging light having the third characteristic;
• the first transflective element is further configured to reflect the third imaging light having the third characteristic.

A head up display system, comprising:

• an imaging device group, a concave reflective element, a directional imaging device and a processor, wherein the imaging device group comprises at least one single-layer imaging device;
• the directional imaging device comprises a light source device, a direction control element, a diffusing element and a light modulating layer;
• the processor is respectively connected with the directional imaging device and the at least one single-layer imaging device in the imaging device group;
• the direction control element is configured to converge light emitted by the light source device;
• the diffusing element is configured to diffuse converged light that is emergent from the direction control element, so that the converged light forms a light beam for forming a light spot;
• and the light modulating layer is configured to modulate the light beam for forming the light spot, so that the light beam is formed into directional imaging light;
• the at least one single-layer imaging device is configured to emit imaging light incident to the concave reflective element;
• the concave reflective element is configured to reflect the imaging light;
• and
• the processor is configured to:
• determine to-be-displayed target information and a target imaging device, and control the target imaging device to display the to-be-displayed target information;
• wherein the target imaging device is one or more imaging devices selected from a group consisting of the directional imaging device and the at least one single-layer imaging device in the imaging device group;
• wherein the direction control element comprises at least one transparent part, the transparent part comprises a light incident surface and a light exit surface, the light source device comprises a plurality of light sources, and light emitted by a light source corresponding to the transparent part enters the transparent part from the light incident surface and exits from the light exit surface, the transparent part is configured to make a divergence angle of the light emitted from the light exit surface smaller than a divergence angle of the light incident to the light incident surface;
• the light incident surface comprises a first light incident sub-surface with a protrusion direction towards the light source, and/or the light exit surface comprises a first light exit sub-surface with a protrusion direction away from the light source;
• the light incident surface further comprises a second light incident sub-surface connected with the first light incident sub-surface, and the transparent part further comprises a side surface connecting the second light incident sub-surface with the light exit surface, part of the light emitted by the light source enters the transparent part from the second light incident sub-surface, then is reflected by the side surface, and exits from the light exit surface;
• and/or the light exit surface further comprises a second light exit sub-surface connected with the first light exit sub-surface, and the transparent part further comprises a side surface connecting the second light exit sub-surface with the light incident surface, part of the light emitted by the light source enters the transparent part, then is reflected by the side surface, and is emitted from the second light exit sub-surface;
• wherein, and/or, the at least one transparent part is in a transparent part layer, the plurality of light sources are in a light source layer, and a region between the light source layer and the transparent part layer is a gas medium layer;
• wherein, and/or, the direction control element further comprises a plurality of light converging elements, light emitted by a light source corresponding to the light converging element passes through the transparent part after passing through the light converging element, the at least one transparent part is in a transparent part layer, the plurality of light converging elements are in a light converging layer, and a region between the light converging element layer and the transparent part layer is a gas medium layer.