| 主权项 |
1. A light collector for collecting light emitted by a light source and converting said collected light into a light beam, said light collector comprising:
a central lens part aligned along an optical axis of said light source, said central lens comprising a central entrance surface and a central exit surface, a central part of said light emitted by said light source entering said central lens through said central entrance surface and leaving said central lens through said central exit surface, whereby said central part of said emitted light is converted into a first light beam part having a first cross sectional light distribution; a peripheral lens part surrounding at least a part of said central lens, said peripheral lens comprising a peripheral entrance surface, a peripheral reflection surface, and a peripheral exit surface, a peripheral part of said light emitted by said light source entering said peripheral lens through said peripheral entrance surface and reflected by said peripheral reflection surface before leaving said peripheral lens through said peripheral exit surface, whereby said peripheral part of said emitted light is converted to a second light beam part having a second cross sectional light distribution; wherein said central lens and said peripheral lens are mutually adapted to convert said light emitted by said light source into a common light beam having a substantial circular and rotationally symmetric cross sectional light distribution, wherein said common light beam comprises said first light beam part and said second light beam part, and wherein said central lens and said peripheral lens are adapted to complement each other, whereby said first cross sectional light distribution and said second cross sectional light distribution are partially inverted in relation to each other. |
