| 摘要 |
The invention provides a light illuminating apparatus which can illuminate an annular irradiation area at the same time only through a light source. The light illuminating apparatus illuminates an annular irradiation area of an object to be illuminated and arranged on a specified position. The light illuminating apparatus is provided with an LED assembly, a first lens, a second lens and a third lens. The LED assembly emits light. The first lens and the LED assembly have the same optical axis, and the first lens reduces the divergence angle of ultraviolet light emitted by the LED assembly and enables the light to form a specified divergence angle. The second lens and the first lens have the same optical axis, and the second lens refracts the light penetrating the first lens to be annular light taking optical axis O as the center. The third lens and the second lens have the same optical axis, and the third lens focuses the light penetrating the second lens on the irradiation area in an annular manner. |
