Optical design method enabling half-intensity angle to be located on 8-degree round spot
A technology of optical design and angle, applied in the direction of optics, optical signals, optical components, etc.
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[0042] The present invention will be further described below in conjunction with the accompanying drawings of the description.
[0043] like figure 1 As shown, an optical design method that satisfies the half-light intensity angle of a circular spot at 8 degrees is characterized in that it includes the following steps:
[0044] (1) if Figures 5 to 7 As shown, a reflective cup 1 and a light guide post 2 are designed, and the light guide post 2 is placed at the center of the reflective cup 1; the reflective surface of the reflective cup 1 is a second free-form surface 11, and the light guide post 2 One end is a plane to form an incident surface 21, the other end of the light guide column 2 is concave to form an exit surface, the exit surface is a first free curved surface 23, and the side of the light guide column 2 is a reflective surface 22;
[0045] (2) The light enters from the incident surface 21 of the light guide column 2 and enters the reflective surface 22 on the sid...
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