A UV C light source including a UV C bulb adapted to emit and project UV C light at a wavelength and an interchangeable UV C light modifier through which at least a portion of the UV C light emitted from said UV C bulb is projected. The UV C light modifier may be reflective, such as a reflector, perforated, holographic material, or mechanical modifier such as a barn door. The UV C light modifier might produce a narrow pattern, circular pattern, flat pattern, or asymmetrical pattern or other desired geometric pattern, or upper air pattern. The UV C light modifier is easily removed and interchanged or may be selectable such as by receiving a base UV C fixture including the UV C light source of the present invention and selecting a desired light modifier.

A UV C light source including a UV C bulb adapted to emit and project UV C light at a wavelength and an interchangeable UV C light modifier through which at least a portion of the UV C light emitted from said UV C bulb is projected. The UV C light modifier may be reflective, such as a reflector, perforated, holographic material, or mechanical modifier such as a barn door. The UV C light modifier might produce a narrow pattern, circular pattern, flat pattern, or asymmetrical pattern or other desired geometric pattern, or upper air pattern. The UV C light modifier is easily removed and interchanged or may be selectable such as by receiving a base UV C fixture including the UV C light source of the present invention and selecting a desired light modifier.

A light source (1), which has a hollow body (2) closed in a gas-tight manner, which is coated on at least one inner side with a phosphor and is filled with gaseous tritium and emits colored light, the hollow body (2) being arranged in a housing (3) of the light source (1), the light source (1) having at least one body (4) of a colored material which annularly encircles a longitudinal center axis of the light source (1) and the color of which is different from black in daylight, the annularly encircling body (4) being arranged at least on a terminal end region of the housing (3) or at least between the terminal end region of the housing (3) and a light-emitting end face of the hollow body (2).

A light source (1), which has a hollow body (2) closed in a gas-tight manner, which is coated on at least one inner side with a phosphor and is filled with gaseous tritium and emits colored light, the hollow body (2) being arranged in a housing (3) of the light source (1), the light source (1) having at least one body (4) of a colored material which annularly encircles a longitudinal center axis of the light source (1) and the color of which is different from black in daylight, the annularly encircling body (4) being arranged at least on a terminal end region of the housing (3) or at least between the terminal end region of the housing (3) and a light-emitting end face of the hollow body (2).

This application discloses an ultraviolet lamp tube comprising: an outer tube and an inner tube, each installed with an electrode, wherein the outer wall of the outer tube is coated with plated coatings A and B for filtering waves to enable emission of a single-wavelength light from the light source. This application also discloses an ultraviolet lamp tube comprising an inner tube and an outer tube each installed with an electrode, wherein the outer tube is coated with a plated coating A and a reflective coating to enable emission of a single-wavelengthe light with a high luminous efficiency. Through the method of plated coating, the UV lamps disclosed have achieved increased beam angle, improved light output power and luminous efficiency.

This application discloses an ultraviolet lamp tube comprising: an outer tube and an inner tube, each installed with an electrode, wherein the outer wall of the outer tube is coated with plated coatings A and B for filtering waves to enable emission of a single-wavelength light from the light source. This application also discloses an ultraviolet lamp tube comprising an inner tube and an outer tube each installed with an electrode, wherein the outer tube is coated with a plated coating A and a reflective coating to enable emission of a single-wavelengthe light with a high luminous efficiency. Through the method of plated coating, the UV lamps disclosed have achieved increased beam angle, improved light output power and luminous efficiency.

A light irradiation device according to an embodiment of the present disclosure has high light irradiation efficiency and cooling efficiency and can be reduced in size. The light irradiation device includes an excimer lamp including a light emitting tube that emits light, and a lamp electrode provided on an outside of the light emitting tube, and a case including a case body in which the excimer lamp is accommodated, a connection support provided at one side of the case body to be connected to the lamp electrode, and a case electrode provided at the other side of the case body to be in contact with a surface of the light emitting tube.

A light irradiation device according to an embodiment of the present disclosure has high light irradiation efficiency and cooling efficiency and can be reduced in size. The light irradiation device includes an excimer lamp including a light emitting tube that emits light, and a lamp electrode provided on an outside of the light emitting tube, and a case including a case body in which the excimer lamp is accommodated, a connection support provided at one side of the case body to be connected to the lamp electrode, and a case electrode provided at the other side of the case body to be in contact with a surface of the light emitting tube.

Provided is an ultraviolet irradiation device including an excimer lamp, a main emission wavelength of which belongs to a wavelength band of 190-230 nm (first wavelength band), the ultraviolet irradiation device that shows high startability. This ultraviolet irradiation device includes: a lamp house on at least one surface of which a light extraction surface is formed; an excimer lamp accommodated in the lamp house, the excimer lamp that emits ultraviolet light, a main emission wavelength of which belongs to a first wavelength band of 190-230 nm; and a start assist light source arranged in a position in which ultraviolet light, a main emission wavelength of which belongs to a second wavelength band of 250-300 nm, is capable of being irradiated to the excimer lamp.

Provided is an ultraviolet irradiation device including an excimer lamp, a main emission wavelength of which belongs to a wavelength band of 190-230 nm (first wavelength band), the ultraviolet irradiation device that shows high startability. This ultraviolet irradiation device includes: a lamp house on at least one surface of which a light extraction surface is formed; an excimer lamp accommodated in the lamp house, the excimer lamp that emits ultraviolet light, a main emission wavelength of which belongs to a first wavelength band of 190-230 nm; and a start assist light source arranged in a position in which ultraviolet light, a main emission wavelength of which belongs to a second wavelength band of 250-300 nm, is capable of being irradiated to the excimer lamp.