ROTARY MECHANISM AND SPECTROSCOPE

• Main Author: YONEZAWA YOSHIO
• Format: Patent
• Language: English; Japanese
• Published: 01.02.2018
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

PROBLEM TO BE SOLVED: To provide a rotary mechanism and a spectroscope capable of accurately detecting an origin position of a rotor even in a case where temperature change occurs.SOLUTION: An origin position calculation unit is configured to calculate an origin position B of a rotor 61, based on a first rotary position being a rotary position of the rotor 61 at the time when a photointerrupter 64 detects a first shielding unit 632, and a second rotary position being a rotary position of the rotor 61 at the time when photointerrupter 64 detects a second shielding unit 633. Therefore, the origin position calculation unit can calculate the origin position B of the rotor 61 so as to offset detection error occurring when the photointerrupter 64 detects the respective shielding units 632, 633 of the rotor 61l. As the result, even in a case where temperature change occurs, the origin position B of the rotor 61 can be accurately detected.SELECTED DRAWING: Figure 1 【課題】温度変化が生じる場合であっても回転体の原点位置を正確に検出できる回転機構及び分光器を提供する。【解決手段】原点位置算出部は、ホトインタラプタ６４が第１遮蔽部６３２を検出したときの回転体６１の回転位置である第１回転位置、及び、ホトインタラプタ６４が第２遮蔽部６３３を検出したときの回転体６１の回転位置である第２回転位置に基づいて回転体６１の原点位置Ｂを算出する。そのため、ホトインタラプタ６４が回転体６１の各遮蔽部６３２，６３３を検出する際に生じる検出誤差を打ち消すようにして、原点位置算出部によって回転体６１の原点位置Ｂを算出できる。その結果、温度変化が生じる場合であっても回転体６１の原点位置Ｂを正確に検出できる。【選択図】 図１