| 摘要 |
An embodiment of the present invention relates to a laser flash for focusing light to a photographing area in a short distance. The laser flash according to an embodiment includes: a laser diode emitting a laser along an optical axis; a first lens arranged in one side of the laser diode, and arranged on the optical axis; a second lens spaced apart from the first lens, and arranged on the optical axis; and a third lens arranged between the first lens and the second lens on the optical axis, and moving toward the first lens along the optical axis or moving toward the second lens along the optical axis, wherein the first lens and the third lens are biconvex lenses, and the second lens is a plane convex lens. |
