Optical system for small-bore endoscope
An optical system and endoscope technology, applied in the field of medical devices, can solve the problems of short range of clear imaging object distance, discount of endoscope detection effect, inconvenient inspection, etc., achieving low tolerance sensitivity, small change in working focal length, and improved wildcard effect
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Embodiment 1
[0116] The structure of the endoscope optical system of Embodiment 1 of the present invention is shown in figure 2 In , the aberration curve of the endoscope optical system of Embodiment 1 of the present invention in air is shown in image 3 , the aberration curve in the human body is expressed in Figure 4 middle.
[0117] Table 1 is the lens data table of Embodiment 1 of the endoscope optical system.
[0118]
[0119]
[0120] Table 1
[0121] Table 2 shows the range of the ratio of the aspheric sagittal height to the radius R of the first lens 1 and the second lens 4 in Embodiment 1 of the endoscope optical system.
[0122]
[0123] Table 2
[0124] Table 3 shows the range of the ratio of the aspheric sagittal height to the radius R of the third lens 5 and the fourth lens 6 in Embodiment 1 of the endoscopic optical system.
[0125]
[0126] table 3
Embodiment 2
[0128] The structure of the endoscope optical system of Embodiment 2 of the present invention is shown in Figure 5 In , the aberration curve of the endoscope optical system of Example 2 of the present invention in air is shown in Image 6 , the aberration curve in the human body is expressed in Figure 7 middle.
[0129] Table 4 is the lens data table of Embodiment 2 of the endoscope optical system.
[0130]
[0131]
[0132] Table 4
[0133] Table 5 shows the range of the ratio of the aspheric sagittal height to the radius R of the first lens 1 and the second lens 4 of the second embodiment of the endoscopic optical system.
[0134]
[0135]
[0136] table 5
[0137] Table 6 shows the ratio range of the aspherical sagittal height to the radius R of the third lens 5 and the fourth lens 6 of the second embodiment of the endoscope optical system.
[0138]
[0139] Table 6
Embodiment 3
[0141] The structure of the endoscope optical system of Embodiment 3 of the present invention is shown in Figure 8 In , the aberration curve of the endoscope optical system of Example 3 of the present invention in air is shown in Figure 9 , the aberration curve in the human body is expressed in Figure 10 middle.
[0142] Table 7 is the lens data table of Embodiment 3 of the endoscope optical system.
[0143]
[0144] Table 7
[0145] Table 8 shows the range of the ratio of the aspheric sagittal height to the radius R of the first lens 1 and the second lens 4 of the third embodiment of the endoscopic optical system.
[0146]
[0147] Table 8
[0148] Table 9 shows the range of the ratio of the aspheric sagittal height to the radius R of the third lens 5 and the fourth lens 6 in Embodiment 3 of the endoscope optical system.
[0149]
[0150]
[0151] Table 9
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