Heads-up display apparatus

A heads up display apparatus adapted to be mounted to a helmet or item of headgear to display an image to a user, the apparatus comprising:

• a housing;
• an image projection system, the image projection system comprising:
• an electronic display;
• an aspherical lens;
• a semi-transparent display panel attached to an external surface of the housing and locatable in a line of sight of a user;
• and
• a front surface mirror for reflecting light emitted from the electronic display through the aspherical lens onto the sem i-transparent display panel for display to a user,
• wherein the electronic display, the aspherical lens and the front surface mirror are arranged within the housing;
• and
• a display controller adapted to receive and process data to be presented on the electronic display,
• whereby the heads up display apparatus minimises refocusing of an eye of a user when looking from a primary task to the display and back to the primary task.