Nov. 2014

Article Contents

Chinese Optics> 2014> 7(6): 956-961.

HE Yuan-qing, LIU Yong-ji, ZHAI Yi. Optical design of imaging keratometer[J]. Chinese Optics, 2014, 7(6): 956-961. doi: 10.3788/CO.20140706.0956

Citation:

HE Yuan-qing, LIU Yong-ji, ZHAI Yi. Optical design of imaging keratometer[J].Chinese Optics, 2014, 7(6): 956-961.doi:10.3788/CO.20140706.0956

HE Yuan-qing, LIU Yong-ji, ZHAI Yi. Optical design of imaging keratometer[J]. Chinese Optics, 2014, 7(6): 956-961. doi: 10.3788/CO.20140706.0956

Citation:

HE Yuan-qing, LIU Yong-ji, ZHAI Yi. Optical design of imaging keratometer[J].Chinese Optics, 2014, 7(6): 956-961.doi:10.3788/CO.20140706.0956

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Optical design of imaging keratometer

doi:10.3788/CO.20140706.0956

Institute of Modern Optics, Nankai University, Tianjin 300071, China

Received Date:16 Sep 2014
Rev Recd Date:15 Nov 2014
Publish Date:25 Nov 2014

Abstract

Abstract

An imaging keratometer by the aid of modern optoelectronic technology is proposed to improve the accuracy of measurement. The optical system consists of an annular object, a first imaging subsystem, a second imaging subsystem, and a CCD detector. First, the first imaging subsystem and second imaging subsystem are designed and optimized by ZEMAX, and two subsystems are connected by a semitransparent mirror. Then we perform optimization of the whole optical system of imaging keratometer. Finally, the simulation of the illumination of the annular image is accomplished by TracePro. The result shows that the measurement range of this imaging keratometer is about 30D to 60D(5.5 mm to 11 mm in radius of curvature), and the accuracy is about 0.072D in the case of the radius of curvature of 7.8 mm.
- keratometer,
- imaging system,
- high accuracy

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References (1)

References

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