Abstract

Subject of study. The possibility of using an optical system that includes two dichroic filters in a device for remote diagnostics of the state of high-voltage equipment and power lines was investigated. Aim of study. A new optical circuit of the device for diagnosing high-voltage equipment with improved spectral characteristics and obtaining images in the spectrum’s ultraviolet range, including a Cassegrain-type mirror lens, dichroic filters, and matrix photodetectors, was developed. Method. It is based on ray calculation of the investigated and optimized optical system of the device for remote diagnostics of high-voltage equipment. Computer modeling and aberration calculations made it possible to determine the design and quality parameters of the optical system. Main results. The design parameters of the developed optical scheme, which includes dichroic filters to separate radiation from different spectral ranges into separate optical channels, are given. Spectral transmission coefficients of the proposed calculated dichroic filters and options of matrix photoreceiving devices for each optical range are given. Results of aberration calculation and integral transmittance estimation are presented. Practical significance. The proposed optical scheme using dichroic filters increases spectral transmission and obtains images in the ultraviolet range. It can be used in a device to diagnose high-voltage equipment and power lines.

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