Abstract: An apparatus and method for adjusting a high intensity discharge arc tube to a predetermined (e.g., relatively horizontal) operating position in a light fixture regardless of aiming orientation of the light fixture towards a target. In one aspect, the light source is mounted in an independently pivotal yoke in the light fixture. A mechanical linkage proportionally pivots the light source relative to any pivoting motion of the fixture over a range of positions such that a selected light source orientation can be approximately maintained regardless of aiming orientation of the fixture.

Abstract: An apparatus and method for reducing lumen depreciation caused by other than lamp lumen depreciation. In one aspect, manufacturing and assembly of the fixture uses clean-room light techniques. In another aspect of the invention, materials that have a propensity to outgas are shielded from direct exposure to light energy. Other aspects of the invention include other methodologies to eliminate causes for lumen depreciation.

Abstract: An apparatus, method, and system of aiming lighting fixtures. One aspect of the invention mounts a substantially collimated light source on a lighting fixture. The direction of the substantially collimated light source is fixed in a known relationship to the aiming direction of the lighting fixture. By finding the substantially collimated light source either by direct viewing or in a mirror, the aiming direction of the lighting fixture can be derived by using the known the relationship between the substantially collimated light source and the aiming direction of the fixture. Thus, the aiming direction of the fixture can be derived without operating the lighting fixture and can be derived even at relatively remote locations from the lighting fixture. The apparatus and method can be used on one fixture or a plurality of fixtures. It can also be used on one fixture of an array of fixtures to aim the entire array.

Abstract: A means and method for increasing use of a light from a high intensity lighting fixture to a target area without an increase in energy use. One aspect increases the electrical efficiency of transmission of electrical power from an electrical power source to the lamp such that for the same cost of electrical energy, more electrical energy is available for production of light. Conversely less electrical energy could be purchased to produce the same amount of light. In another aspect electrical components along the electrical service path can be utilized with increased electrical efficiency towards the same end.

Abstract: An apparatus and method for keeping a high intensity discharge arc tube relatively horizontal in a light fixture regardless of aiming orientation of the light fixture towards a target. In one aspect, the light source is mounted in an independently pivotal yoke in the light fixture. A gearing arrangement automatically proportionally pivots the light source relative to any pivoting motion of the fixture over a range of motion such that a selected light source orientation can be approximately maintained regardless of aiming orientation of the fixture.

Abstract: An apparatus, method, and system for increasing usable light to a target area. One aspect of the invention includes a lighting fixture with a visor. The visor includes an opening through which a controlled amount of light is allowed generally upwardly. A controlled amount of light within provides some uplighting above the target area or above the fixtures. In another aspect of the invention, a lighting system with a plurality of lighting fixtures would have at least some of the fixtures fitted with the visors with the openings to create a cumulative uplighting effect.

Abstract: A method, apparatus and system for illuminating a sports field. The method includes identifying fixtures having a likelihood of affecting playability or glare or spill light relative to a point of view on or off the field. The method includes steps to identify such fixtures for the purpose of adding a component which improves playability or decreases glare or spill light for the point of view. A further method does so for multiple points of view relative to the field, whether on or off the field. One component is a long visor that would be added only to identified fixtures.

Abstract: An apparatus and method for keeping a high intensity discharge arc tube relatively horizontal in a light fixture regardless of aiming orientation of the light fixture towards a target. In one aspect, the light source is mounted in an independently pivotal yoke in the light fixture. A gearing arrangement automatically proportionally pivots the light source relative to any pivoting motion of the fixture over a range of motion such that a selected light source orientation can be approximately maintained regardless of aiming orientation of the fixture.

Abstract: A wide area lighting fixture includes a relatively large visor extending from a bowl shaped fixture reflector. The distal portion of the visor extends relatively far outwardly and downwardly and around the fixture opening. In operating position, the visor blocks most or all off field direct view of the light source in the fixture. Optionally a light absorbing surface or insert can be placed at the very bottom of the bowl shaped reflector to absorb or otherwise stop light that otherwise might go off-field to further control spill light, glare, and sky glow or uplight.

Abstract: A method and apparatus to increase efficiency of wide area lighting fixtures having a lamp mounting opening in a reflector or reflector frame, which results in gap(s) or spaces that do not control incident light to the intended target. The gap(s) or spaces(s) are covered with reflecting surfaces which do control incident light to increase efficiency of the fixture.

Abstract: One aspect of the present invention is a non-electronic method of controlling the power provided to the lamp through use of multiple secondary taps off the secondary side of the HID ballast. This allows for a base capacitor to be used, along with the multiple secondary taps of the ballast, to vary the power to the lamp for purposes of providing constant light output, dimming capabilities, or to hold the power constant, or any combination of such.