2results about How to "Large measurable range" patented technology

The application discloses a kind of microcavity optical frequency comb ultra-high repetition frequency precision measurement system and method, solve the existing microcavity optical frequency comb repetition frequency measurement system because of facing electronic device frequency bandwidth bottleneck lead to the problem that measurable range is seriously limited, including optical rough measurement unit, comb tooth processing unit, modulation frequency shift unit, reference equalization unit, beam combination beat frequency unit and microwave precision measurement unit;Optical rough measurement unit is used to measure the repetition frequency of the light beam to be measured, and is divided into measurement beam and reference beam;Comb tooth processing unit is used to filter out target comb from measurement beam;Modulation frequency shift unit is used for electro-optic modulation to target comb;Reference equalization unit is used to control the reference comb power of reference beam to obtain better beat frequency detection effect;Beam combination beat frequency unit is used for optical beam combination beat frequency between target comb and reference comb and is divided into two beams;Microwave precision measurement unit is used to detect the beat frequency signal between target comb and reference comb, to realize the precision measurement of repetition frequency.

The present invention discloses a rotating platform and a spherical coordinate measuring machine based thereon, comprising a rotating mechanism I, a rotating mechanism II and a fixture; the rotating mechanism I comprises a bracket, and rotating shafts are symmetrically arranged at both ends of the bracket, and the bracket is used for rotational connection with a working platform through two rotating shafts; the rotating mechanism II is installed on the rotating mechanism I, and the rotating mechanism II adopts a rotary table; the fixture is installed on the rotary table, and the fixture is used for clamping spherical shell parts; the rotating shafts symmetrically arranged at both ends of the bracket are coaxial, and the bracket rotates with the axis as the rotating axis, and the rotating axis of the bracket and the rotating axis of the rotary table are perpendicular to each other. The present invention is conducive to achieving the measurement goals of spherical shell parts with high measurement accuracy, high efficiency and wide range.