A lighting module has an LED (44), a lens (45) over the LED to produce a beam-shaped output from the LED and a collimator (50) arranged to partially collimate the beam-shaped out-put. Blue light is provided at large angles to the normal, for example using a filter arrangement (54, 56) over the collimator which is adapted to filter light from the collimator at relatively large angles to the normal. The filter arrangement does not filter light from the collimator at relatively small angles to the normal. Thus, the module provides white task light in a normal direction and blue ambient light at steep angles. The overall system can be compact and light efficient.

A lighting module has an LED (44), a lens (45) over the LED to produce a beam-shaped output from the LED and a collimator (50) arranged to partially collimate the beam-shaped out-put. Blue light is provided at large angles to the normal, for example using a filter arrangement (54, 56) over the collimator which is adapted to filter light from the collimator at relatively large angles to the normal. The filter arrangement does not filter light from the collimator at relatively small angles to the normal. Thus, the module provides white task light in a normal direction and blue ambient light at steep angles. The overall system can be compact and light efficient.

A technique for simplifying structure data for representing an environment. Polyhedrons can make up structure data used in an application such as modeling, visualization, and navigation. Consequently, the operations that are performed on the data often involve determining, for each polyhedron that defines a structure such as a building, whether the polyhedron obstructs a line-of-sight line between a first point in space being considered in the application and a second point. In order to determine whether a polyhedron obstructs a line-of-sight line, a data-processing system operating on the structure data must determine whether any walls of the polyhedron intersect the line. Thus, the more polyhedrons there are or the more vertices that are in each polyhedron, the more walls there are, and the more intersection checks are required, thereby adding to the computations. The disclosed technique reduces the number of walls by simplifying objects that make up the structure data.

A technique for simplifying structure data for representing an environment. Polyhedrons can make up structure data used in an application such as modeling, visualization, and navigation. Consequently, the operations that are performed on the data often involve determining, for each polyhedron that defines a structure such as a building, whether the polyhedron obstructs a line-of-sight line between a first point in space being considered in the application and a second point. In order to determine whether a polyhedron obstructs a line-of-sight line, a data-processing system operating on the structure data must determine whether any walls of the polyhedron intersect the line. Thus, the more polyhedrons there are or the more vertices that are in each polyhedron, the more walls there are, and the more intersection checks are required, thereby adding to the computations. The disclosed technique reduces the number of walls by simplifying objects that make up the structure data.

A light emitting device includes: a base; a first semiconductor laser element disposed on an upper surface of the base and configured to emit first light; a first light reflecting member disposed on the upper surface of the base and configured to reflect the first light upwards; a phosphor member having a lower surface onto which the first light is irradiated and an upper surface serving as a light extraction surface; and a light shielding member surrounding lateral surfaces of the phosphor member. First and second regions of the first light reflecting member are formed such that a portion of the light reflected by the first region that is reflected on a side close to the second region and a portion of the light reflected by the second region that is reflected on a side close to the first region intersect before reaching the lower surface of the phosphor member.

A light emitting device includes: a base; a first semiconductor laser element disposed on an upper surface of the base and configured to emit first light; a first light reflecting member disposed on the upper surface of the base and configured to reflect the first light upwards; a phosphor member having a lower surface onto which the first light is irradiated and an upper surface serving as a light extraction surface; and a light shielding member surrounding lateral surfaces of the phosphor member. First and second regions of the first light reflecting member are formed such that a portion of the light reflected by the first region that is reflected on a side close to the second region and a portion of the light reflected by the second region that is reflected on a side close to the first region intersect before reaching the lower surface of the phosphor member.

The present disclosure relates generally to an omnidirectional light optic. In one embodiment, the omnidirectional light includes a plurality of reflectors, wherein each one of the plurality of reflectors comprises at least two reflective sides, wherein each one of the at least two reflective sides has an associated optical axis, wherein each respective optical axis of the at least two reflective sides is located on a common horizontal plane and each one of the at least two reflective sides comprises a curved concave cross-section, a plurality of LEDs, wherein each one of the plurality of reflectors is associated with at least one of the plurality of LEDs and at least one blocking band member with at least one edge that blocks light emitted by the plurality of LEDs at common horizontal angles.

The present disclosure relates generally to an omnidirectional light optic. In one embodiment, the omnidirectional light includes a plurality of reflectors, wherein each one of the plurality of reflectors comprises at least two reflective sides, wherein each one of the at least two reflective sides has an associated optical axis, wherein each respective optical axis of the at least two reflective sides is located on a common horizontal plane and each one of the at least two reflective sides comprises a curved concave cross-section, a plurality of LEDs, wherein each one of the plurality of reflectors is associated with at least one of the plurality of LEDs and at least one blocking band member with at least one edge that blocks light emitted by the plurality of LEDs at common horizontal angles.

The invention provides a lighting unit (1000) comprising a lighting device (100), wherein the lighting device (100) comprises a light source (10) configured to provide light source light (11) and beam shaping optics (20) configured to shape the light source light into a lighting device beam (101), wherein the lighting device (100) comprises a window (30) comprising an upstream face (31) directed to the light source (10) and a downstream face (32), wherein the lighting unit (1000) further comprises a beam modifier (200) configured adjacent to the window (30) and configured to intercept at least part of said lighting device beam (101), wherein the lighting device (100) and the beam modifier (200) are configured to modify said lighting device beam (101) to provide a lighting unit beam (1001) downstream from said beam modifier (200), wherein the beam modifier (200) comprises a printed beam modifying element (210).

The invention provides a lighting unit (1000) comprising a lighting device (100), wherein the lighting device (100) comprises a light source (10) configured to provide light source light (11) and beam shaping optics (20) configured to shape the light source light into a lighting device beam (101), wherein the lighting device (100) comprises a window (30) comprising an upstream face (31) directed to the light source (10) and a downstream face (32), wherein the lighting unit (1000) further comprises a beam modifier (200) configured adjacent to the window (30) and configured to intercept at least part of said lighting device beam (101), wherein the lighting device (100) and the beam modifier (200) are configured to modify said lighting device beam (101) to provide a lighting unit beam (1001) downstream from said beam modifier (200), wherein the beam modifier (200) comprises a printed beam modifying element (210).