A light source is composed of a discharge lamp, a resistor and a reflector container. The discharge lamp is provided as a source of light. The resistor increases a resistance in elevation of a temperature thereof, and reduces the resistance in lowering of the temperature thereof. The reflector container is a constituent element to which the discharge lamp and the resistor are attached. Additionally, the resistor is caused to heat an outer surface of the reflector container in accordance with elevation of a temperature of the discharge lamp in activation of lighting of the discharge lamp.

The invention is directed to a sealed high intensity illumination device configured to receive a laser beam from a laser light source. A sealed chamber is configured to contain an ionizable medium. The chamber includes a reflective chamber interior surface having a first parabolic contour and parabolic focal region, a second parabolic contour and parabolic focal region, and an interface surface. An ingress surface is disposed within the interface surface configured to admit the laser beam into the chamber, and an egress surface disposed within the interface surface configured to emit high intensity light from the chamber. The first parabolic contour is configured to reflect light from the first parabolic focal region to the second parabolic contour, and the second parabolic contour is configured to reflect light from the first parabolic contour to the second parabolic focal region.

An apparatus and a method for operating a sealed high intensity illumination lamp configured to receive a laser beam from a laser light source. The lamp includes a sealed chamber configured to contain an ionizable medium having a plasma sustaining region, and a plasma ignition region. A high intensity light egress window emits high intensity light from the chamber. A substantially flat ingress window located within a wall of the chamber admits the laser beam into the chamber. The lamp includes means for controlled increasing and decreasing a pressure level within the sealed chamber while the lamp is producing the high intensity illumination.

A compact LSP broadband light includes a gas containment structure containing a mixture of a first noble gas and a second noble gas, a filter tube positioned within the gas containment structure, an input window, and a pump source. The laser pump source directs an optical pump through the input window to sustain a plasma within the filter tube. The first noble gas absorbs broadband light within a first and a second wavelength band. The filter tube absorbs broadband light having a wavelength below a selected threshold. The absorption of broadband light by the first noble gas and the filter tube provide long-pass filtering to protect one or more downstream optical elements. The gas containment structure includes an output optical window for transmission of filtered broadband light. The gas containment structure includes a gas inlet and outlet for generating a reverse vortex flow pattern within the filter tube.

A laser-sustained plasma light source includes a plasma lamp configured to contain a volume of gas and receive illumination from a pump laser in order to generate a plasma. The plasma lamp includes one or more transparent portions transparent to illumination from the pump laser and at least a portion of the broadband radiation emitted by the plasma. The one or more transparent portions are formed from a transparent material having elevated hydroxide content above 700 ppm.

A laser sustained plasma lamp includes a mechanically sealed pressurized chamber assembly (330) configured to contain an ionizable material. The chamber assembly is bounded by a chamber tube (310), an ingress sapphire window (340), a first metal seal ring (320) configured to seal against the chamber tube ingress end and the ingress sapphire window, an egress sapphire window (342), and a second metal seal ring (322) configured to seal against the chamber tube egress end and the egress sapphire window. A mechanical clamping structure (350, 355) external to the chamber assembly is configured to clamp across at least a portion of the ingress sapphire window and the egress sapphire window. The ingress sapphire window and the egress sapphire window are not connected to the chamber tube via welding and/or brazing.

According to an embodiment, an IPL sterilization device includes a lamp configured to output light including a visible light region to sterilize a region including a surface of an object; a capacitor configured to transmit a voltage charged to the lamp; and a controller configured to control the capacitor, wherein the controller is configured to: control the lamp to be driven in an outputable state or an unoutputable state, change the lamp to the unoutputable state when the object satisfies an object overheat condition in the outputable state, and change the lamp to the outputable state when the object unsatifies the object overheat condition after the lamp satisfies the object overheat condition and changes the lamp to the unoutputable state, wherein the outputable state is a state in which the lamp is capable of outputting light by applying a driving pulse to the lamp by the capacitor, and the unoutputable state is a state in which the lamp is not capable of outputting light because the capacitor does not output a driving voltage to the lamp.

According to an embodiment, an IPL sterilization device includes a lamp configured to output light including a visible light region to sterilize a region including a surface of an object; a capacitor configured to transmit a voltage charged to the lamp; and a controller configured to control the capacitor, wherein the controller is configured to: control the lamp to be driven in an outputable state or an unoutputable state, change the lamp to the unoutputable state when the object satisfies an object overheat condition in the outputable state, and change the lamp to the outputable state when the object unsatifies the object overheat condition after the lamp satisfies the object overheat condition and changes the lamp to the unoutputable state, wherein the outputable state is a state in which the lamp is capable of outputting light by applying a driving pulse to the lamp by the capacitor, and the unoutputable state is a state in which the lamp is not capable of outputting light because the capacitor does not output a driving voltage to the lamp.

A LSP broadband light source is disclosed. The light source may include a gas containment structure for containing a gas. The light source may include a laser pump source configured to generate an optical pump to sustain a plasma within the gas containment structure for generation of broadband light. The light source may include a tapered window configured to transmit broadband light through an aperture within a wall of the gas containment structure, the tapered window including a tapered section including a tapered surface, wherein the tapered surface is configured to deflect light impinging on a peripheral portion of the tapered window away from a portion of the gas containment structure to protect the portion of the gas containment structure.

A lamp has a light emitting element within a sealed transparent vessel. The vessel comprises a cylindrical section with a longitudinal axis L in parallel to a longitudinal axis F of the light emitting element. In order to provide a lamp suited for compact reflectors, a heat shielding element is arranged to shield at least infrared light. The heat shielding element is arranged in parallel to the longitudinal axis F of the light emitting element and has an axial extension of at least 80% of the light emitting element. The heat shielding element is arranged to shield infrared light emitted into directions perpendicular to the longitudinal axis F covering a circumferential extension of 20-120 measured in cross section.