Augmented reality apparatus

1. An augmented reality apparatus for use in a hazardous area comprising:

a display unit for providing information within a user's field of view said display unit being mounted in a set of glasses or goggles; and

a controller configured to control the display unit mounted in a housing arranged to shield the controller from the hazardous area wherein said housing is remote from the display unit;

wherein the controller is configured to modify the mode of operation of the display unit in dependence of location information indicating that the augmented reality apparatus is in the hazardous area;

wherein the augmented reality apparatus comprises a location module configured to process location information of the augmented reality apparatus;

wherein the location module is configured to detect an external signal to determine when the augmented reality apparatus enters the hazardous area; and

wherein the external signal is a beacon indicating the boundary of the hazardous area.

2. An augmented reality apparatus according to claim 1 , wherein the controller is configured to modify the display unit to a low power mode or an inactive mode.

3. An augmented reality apparatus according to claim 1 , wherein a power source is mounted in the housing arranged to shield the controller from the hazardous area, wherein the housing is remote from the display unit and the power source is connected to the controller and the display unit.

4. An augmented reality apparatus according to claim 1 , wherein when the augmented reality apparatus is in the hazardous area, the display unit is in a low voltage mode, a low current mode or switched off.

5. An augmented reality apparatus according to claim 1 , wherein the augmented reality apparatus comprises at least one sensor for detecting the location of the augmented reality apparatus.

6. An augmented reality apparatus according to claim 5 , wherein the at least one sensor is one or more of the following: a camera, an infrared detector, a microphone, a wireless receiver, a hall sensor, a temperature sensor, a pressure sensor, a radio frequency detector, a global positioning system sensor, or an accelerometer.

7. An augmented reality apparatus according to claim 1 , wherein the location module is configured to determine the location hazardous environment from a camera mounted on the augmented reality apparatus.

8. An augmented reality apparatus according to claim 1 , wherein the controller is configured to modify the mode of the display unit when the augmented reality apparatus leaves the hazardous area.

9. An augmented reality apparatus according to claim 8 , wherein the controller modifies the mode of the display unit from an inactive mode or a low power mode to an active mode.

10. An augmented reality apparatus according to claim 1 , wherein the hazardous area is an atmosphere having a gas, vapour or mist with a zone classification of zone 0, zone 1 or zone 2 or an atmosphere having a dust with a zone classification of zone 20, zone 21 or zone 22.

11. An augmented reality apparatus according to claim 1 , wherein the controller modifies the mode of operation of the display unit in dependence of a type of hazardous area.

12. An augmented reality apparatus for use in a hazardous area comprising:

a controller;

a display unit for providing information within a user's field of view;

a sensor communicatively connected to the controller for detecting the location of the apparatus;

wherein the controller, based on input from the sensor, being adapted for detecting whether the apparatus is within or without the hazardous area; and

wherein the controller being configured to control the display unit to operate in a mode with reduced power consumption when the apparatus is within the hazardous area;

wherein the controller being configured to control the display unit to operate in an inactive mode, a low power mode or an active mode; and

wherein the controller in the low power mode is adapted to limit power drawn from a battery prohibiting spark generation.

13. The augmented reality apparatus according to claim 12 , wherein the controller being configured to control the display unit to operate in an emergency mode and show guidance to guide people safely away from danger.

14. The augmented reality apparatus according to claim 12 , wherein the controller, based on input from the sensor, being adapted to classify the type of hazardous area; and wherein the controller is configured to modify the mode of operation of the display unit in dependence of a type of hazardous area.