Xerophthalmia detection lighting and imaging system
An imaging system and lighting optical system technology, which is applied in the field of dry eye detection lighting imaging system, can solve the problems of large variability, low repeatability, and susceptibility to external influences, so as to improve contrast, reduce pain, improve stability and The effect of accuracy
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[0034] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it with reference to the text of the description.
[0035] It should be understood that terms such as "having", "including" and "including" used herein do not equate the presence or addition of one or more other elements or combinations thereof.
[0036] Figure 1~2 Shows an implementation form according to the present invention, which includes:.
[0037] Placido disk 1, which includes several black and white concentric rings;
[0038] The illumination optical system 2 is arranged on the rear surface of the Placido disc, and the illumination optical system includes a plurality of groups of LED units arranged in a ring shape to project the Placido disc onto the tear film 3;
[0039] The imaging optical system receives the Placido disk projection image on the tear film, and along the imaging optical path, the imaging optical sys...
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