The laser methane telemetry optical component uses tunable laser spectral absorption (TDLAS) technology to accurately measure the target gas. The laser and detector integrated in the telemetry optical component realize high-precision, high-density, and high-reliability miniaturized integrated packaging; the telemetry optical component adopts an excellent optical system to achieve the lowest (optical noise) while maximizing the signal-to-noise ratio, ensuring the advantages of high telemetry accuracy and fast response of the telemeter. It can match most of the handheld laser methane telemeters and telemetry pan/tilts on the current market.