Abstract: A heads-up display comprises a housing, a pressure sealed optical element disposed at a front end of the housing, and a dive computer disposed within the housing. The dive computer includes a display panel. There is a lens disposed in the housing between the infrared cut-off filter and the display panel.

Abstract: A heads-up display comprises a housing, a pressure sealed optical element disposed at a front end of the housing, and a dive computer disposed within the housing. The dive computer includes a display panel. There is a lens disposed in the housing between the infrared cut-off filter and the display panel.

Abstract: A heads-up display has a display panel which displays information related to a partial pressure of oxygen in a breathing gas. The display panel comprises a first indicia, a second indicia, a third indicia, and a fourth indicia. The first indicia and the fourth indicia respectively indicate a near hyperoxic condition and a near hypoxic condition. The second indicia and the third indicia together indicate the partial pressure of oxygen in the breathing gas.

Abstract: One or more variable configuration controller (VCC) systems may produce various combinations of series or parallel couplings of coils, winding or inductive elements of an electric machine such as a generator and/or electric motor. The VCC systems include a plurality of bridge rectifiers, and a first number of switches operated to selectively couple respective pairs of coils in series from parallel on an AC side of the bridge rectifiers. The bridge rectifiers provide for automatic electrical isolation of coils on occurrence of open circuit, low voltage or short circuit conditions. A second number of switches with different performance characteristics (e.g., speed, loss) than the first number of switches may be coupled in parallel with respective ones of the first number of switches. Power factor correction may be used.

Abstract: A heads-up display comprises a housing. A display panel is disposed within the housing. An objective lens is disposed within the housing. An achromatic lens is disposed within the housing between the display panel and the objective lens.

Abstract: A heads-up display has a display panel which displays information related to a partial pressure of oxygen in a breathing gas. The display panel comprises a first indicia, a second indicia, a third indicia, and a fourth indicia. The first indicia and the fourth indicia respectively indicate a near hyperoxic condition and a near hypoxic condition. The second indicia and the third indicia together indicate the partial pressure of oxygen in the breathing gas.

Abstract: One or more variable configuration controller (VCC) systems may produce various combinations of series or parallel couplings of coils, winding or inductive elements of an electric machine such as a generator and/or electric motor. The VCC systems include a plurality of bridge rectifiers, and a first number of switches operated to selectively couple respective pairs of coils in series from parallel on an AC side of the bridge rectifiers. The bridge rectifiers provide for automatic electrical isolation of coils on occurrence of open circuit, low voltage or short circuit conditions. A second number of switches with different performance characteristics (e.g., speed, loss) than the first number of switches may be coupled in parallel with respective ones of the first number of switches. Power factor correction may be used.

Abstract: A heads-up display comprises a housing. A display panel is disposed within the housing. An objective lens is disposed within the housing. An achromatic lens is disposed within the housing between the display panel and the objective lens.

Abstract: One or more variable configuration controller (VCC) systems may produce various combinations of series or parallel couplings of coils, winding or inductive elements of an electric machine such as a generator and/or electric motor. The VCC systems include a plurality of bridge rectifiers, and a first number of switches operated to selectively couple respective pairs of coils in series from parallel on an AC side of the bridge rectifiers. The bridge rectifiers provide for automatic electrical isolation of coils on occurrence of open circuit, low voltage or short circuit conditions. A second number of switches with different performance characteristics (e.g., speed, loss) than the first number of switches may be coupled in parallel with respective ones of the first number of switches. Power factor correction may be used.