Endoscope objective lens zoom optical system
An optical system and endoscope technology, which is applied in the field of bifocal objective lens zoom optical system, can solve the problems that diagnosis and follow-up surgery cannot be performed at the same time, and endoscopic equipment is expensive
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[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described more clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described implementation Examples are part of the present invention, not all embodiments.
[0038] FIG. 1 is a cross-sectional configuration diagram showing an objective zoom optical system of an endoscope according to the present embodiment. here, Figure 1A It is a cross-sectional structural view showing the zoom optical system of the endoscope objective lens in a normal observation state. Figure 1B It is a cross-sectional structural view showing the zoom optical system of the endoscope objective lens in a magnified observation state.
[0039] The fixed lens group G1 has negative power. The negative focal power of the fixed lens group clos...
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