Abstract: A head up display arrangement presents a virtual image to a human driver of a motor vehicle. A picture generation unit emits a light field. A mirror is mounted on a gimbal such that the mirror is rotatable about both a first axis and a second axis oriented perpendicular to the first axis. The mirror reflects the light field such that the reflected light field is again reflected by a windshield of the motor vehicle and is visible to the human driver as the virtual image. First and second motors rotate the mirror about the first axis and second axis, respectively. An electronic processor controls the first motor and/or the second motor dependent upon a detected position of the eyes of the human driver such that the virtual image remains visible to the human driver over a range of motion of the driver's head.

Abstract: Examples of the present disclosure relate to a system in a vehicle for reducing oncoming light. The system includes a windshield. The system includes a sensor installed in the vehicle to detect a light from an oncoming light source. The system includes a wave cancellation unit to generate destructive interference light based on the detected oncoming light source and project the destructive interference light into the windshield.

Abstract: Aspects of the disclosure relate to devices and methods for preparing an existing, implanted prosthetic aortic valve for subsequent prosthetic aortic valve implantation. To prepare the existing valve, a valve preparation device is delivered to the valve and valve leaflets are severed either via mechanical cutting or electrodes so that the leaflets cannot obstruct a blood flow path once a prosthetic valve is subsequently implanted within the valve. Similarly, in alternate embodiments, devices and methods of the disclosure can be used for preparing a native aortic valve for delivery and implantation of a prosthetic valve.