Human eye diopter detection optical system and subjective optometry unit

The invention discloses a human eye diopter detection optical system and a subjective optometry unit, and relates to the field of human eye diopter detection, in particular to the human eye diopter detection optical system and the subjective optometry unit based on the optical system. The problem that at present, household optometry is difficult can be solved. The human eye diopter detection optical system comprises a lens A and a lens B which are sequentially arranged along an optical axis from an object side to an image side, the lens A is movably arranged along the optical axis, the image side focal power of the lens A is phi 1, the image side focal power of the lens B is phi 2, and phi 1 and phi 2 meet the following relation: 0.4 D < phi 1, 0.4 D < phi 2, and phi 1 = phi 2. The invention further discloses a subjective optometry unit comprising the human eye diopter detection optical system. The method is fast in optometry and accurate in result, and can meet the requirement of individual or family indepen