A method comprising performing operations comprising: a) by a projector subsystem with a high power light source in a theatre, projecting light toward a screen in the theatre such that there is (i) a hazardous light area and (ii) a non-hazardous light area in which a audience seating area is located; b) by a sensor in the theatre, measuring a light level of the light projected toward the screen by the projector subsystem; c) by a processing device, performing operations comprising: i) receiving from the sensor a measured light level of light projected by the high power light source toward the screen, wherein the measured light level represents what a viewer would see of the projected light; ii) determining, by the processing device, a second light level between the hazardous light area and the non-hazardous light area based on the measured light level and position of the light projected toward the screen over the audience seating area of the theatre; iii) comparing, by the processing device, the second light level to an unsafe threshold light level; and iv) determining, by the processing device and based on comparing the second light level to the unsafe threshold light level, a configuration for the projector subsystem such that the light level of light projected by the projector subsystem into the non-hazardous light area is less than the unsafe threshold light level. a) by a projector subsystem with a high power light source in a theatre, projecting light toward a screen in the theatre such that there is (i) a hazardous light area and (ii) a non-hazardous light area in which a audience seating area is located; b) by a sensor in the theatre, measuring a light level of the light projected toward the screen by the projector subsystem; c) by a processing device, performing operations comprising: i) receiving from the sensor a measured light level of light projected by the high power light source toward the screen, wherein the measured light level represents what a viewer would see of the projected light; ii) determining, by the processing device, a second light level between the hazardous light area and the non-hazardous light area based on the measured light level and position of the light projected toward the screen over the audience seating area of the theatre; iii) comparing, by the processing device, the second light level to an unsafe threshold light level; and iv) determining, by the processing device and based on comparing the second light level to the unsafe threshold light level, a configuration for the projector subsystem such that the light level of light projected by the projector subsystem into the non-hazardous light area is less than the unsafe threshold light level. i) receiving from the sensor a measured light level of light projected by the high power light source toward the screen, wherein the measured light level represents what a viewer would see of the projected light; ii) determining, by the processing device, a second light level between the hazardous light area and the non-hazardous light area based on the measured light level and position of the light projected toward the screen over the audience seating area of the theatre; iii) comparing, by the processing device, the second light level to an unsafe threshold light level; and iv) determining, by the processing device and based on comparing the second light level to the unsafe threshold light level, a configuration for the projector subsystem such that the light level of light projected by the projector subsystem into the non-hazardous light area is less than the unsafe threshold light level.