초록 ▼

A stage lighting instrument having a high-intensity light source or lamp coupled with a concave reflector, and a projection optical system having a lens system that includes a well-defined aperture stop. The lens system forms a real image of the light source near the aperture stop. A color filter an

A stage lighting instrument having a high-intensity light source or lamp coupled with a concave reflector, and a projection optical system having a lens system that includes a well-defined aperture stop. The lens system forms a real image of the light source near the aperture stop. A color filter and dimming system may be located within the lens system so that the color filter and dimming elements occupy a volume of space near the aperture stop and within the real image of the light source. By locating the color and dimming apparatus near the aperture stop and within the volume occupied by a real image of the light source, superior color mixing, dimming and integration is achieved using simple, unpatterned filters and a simply-shaped dimmer panel. A color filter and dimming system may alternatively be located as close to the light source as possible so that a real image of the color filter and dimming elements is formed near the aperture stop where the image of the light source is formed. The alternate location, forming a real image of the filters and dimmer, is equivalent to locating the actual color filter and dimming elements at the aperture stop. Diffusion glass elements used in a similar apparatus, located at the aperture stop, transform spotlight properties into wash-light properties in a continuously-variable manner.

대표청구항 ▼

A stage lighting instrument having a high-intensity light source or lamp coupled with a concave reflector, and a projection optical system having a lens system that includes a well-defined aperture stop. The lens system forms a real image of the light source near the aperture stop. A color filter an

A stage lighting instrument having a high-intensity light source or lamp coupled with a concave reflector, and a projection optical system having a lens system that includes a well-defined aperture stop. The lens system forms a real image of the light source near the aperture stop. A color filter and dimming system may be located within the lens system so that the color filter and dimming elements occupy a volume of space near the aperture stop and within the real image of the light source. By locating the color and dimming apparatus near the aperture stop and within the volume occupied by a real image of the light source, superior color mixing, dimming and integration is achieved using simple, unpatterned filters and a simply-shaped dimmer panel. A color filter and dimming system may alternatively be located as close to the light source as possible so that a real image of the color filter and dimming elements is formed near the aperture stop where the image of the light source is formed. The alternate location, forming a real image of the filters and dimmer, is equivalent to locating the actual color filter and dimming elements at the aperture stop. Diffusion glass elements used in a similar apparatus, located at the aperture stop, transform spotlight properties into wash-light properties in a continuously-variable manner. lamp (L) along the light emission window (3), which means define a position of an axis (21) of the lamp (L) to be accommodated in the plane of symmetry (2), which reflector side portions (10) each include a first, convex area (11) with an outer edge (12) in the light emission window (3), and a second concave area (13) which connects to the first, convex area (11) in a line of inflection points (14), and which has an inner edge (15) close to the axis (21) of the lamp (L) to be accommodated, the line of inflection points (14) being situated at a distance from the light emission window (3), and the reflector side portions (10) forming a lateral screening angle α of at least 25°, characterized in that the distance from the line of inflection points (14) to the light emission window (3) is 0.30 to 0.40 of the distance from the outer edge (12) to the axis (21) of the lamp (L) to be accommodated. 2. A luminaire as claimed in claim 1, characterized in that the second area (13) is formed, near its inner edge (15), so as to send the light reflected by it substantially through the plane of symmetry (2). 3. A luminaire as claimed in claim 1, characterized in that the second area (13) is formed, near its inner edge (15), so as to send light reflected by it through the plane of symmetry (2) and, thus, at least substantially avoid reflection at the lamp (L) to be accommodated. 4. A luminaire as claimed in claim 2, characterized in that the first area (11) is formed such that light reflected by it near the outer edge (12) can be reflected, on the same side of the plane of symmetry (2), in directions aside. 5. A luminaire as claimed in claim 2, characterized in that the second area (13) comprises a flat zone (16) along the inner edge (15). 6. A luminaire as claimed in claim 1, characterized in that a second, substantially identical reflector (1') and second means (20') for accommodating a second lamp (L') are present, with means (22) being present between the reflector (1) and the second reflector (1') for operating the lamps (L, L') to be accommodated. 7. A luminaire as claimed in claim 1, characterized in that the reflector is accommodated in a housing (30) which is diffusely reflecting. ng to claim 35, said display surface having a maximum depth to maximum width ratio in a range of from about 0.2:1 to about 0.5:1.