Photon upconversion through sensitized triplet-triplet annihilation (TTA-UC) continues to emerge as a promising wavelength-shifting technology, because low-intensity and non-coherent light can be employed as the incident light. Over the past years, numerous donor-acceptor combinations for TTA-UC have been reported. However, a TTA-UC system using near infrared excitation (wavelength > 800 nm) has not been reported, in spite of its great importance for a wide range of technological applications. In this work, we show a new photon upconversion system consisting of a terrylene derivative as acceptor and naphthalocyanine derivative as donor. Under excitation at 852 nm, the mixed solution displayed upconverted emission in the visible range. On the other hand, emission in visible region from the pristine solutions of donor or acceptor were not observed. Decay profiles of the upconverted emission at 690 nm was on the order of microseconds, indicating that the upconverted emission is based on annihilation of long-lived triplets. The upconverted emission intensity was proportional to square of incident light intensity, being consistent with the two-photon annihilation mechanism. The current upconversion system is found to be robust; upconverted emission intensity was not changed for 2h laser irradiation.