US 12,276,805 B2
Method and system for actively adjusting diopter of head-mounted display, and head-mounted display
Weihui Gan, Guangdong (CN); Jiangfeng Chen, Guangdong (CN); Donghua Liu, Guangdong (CN); Zaiyue Yang, Guangdong (CN); and Huajun Peng, Guangdong (CN)
Assigned to Shenzhen NED Optics Co., Ltd, Guangdong (CN)
Filed by Shenzhen NED Optics Co., Ltd, Guangdong (CN)
Filed on May 14, 2024, as Appl. No. 18/663,317.
Claims priority of application No. 202310547741.0 (CN), filed on May 15, 2023.
Prior Publication US 2024/0393602 A1, Nov. 28, 2024
Int. Cl. G02B 27/01 (2006.01)
CPC G02B 27/0176 (2013.01) [G02B 27/0172 (2013.01); G02B 27/0179 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0159 (2013.01); G02B 2027/0185 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for actively adjusting diopter of a head-mounted display, comprising the following steps:
adjusting a relative distance between a displaying component of the head-mounted display and an optical component by a motor driving component;
presetting a mapping relationship between a diopter value and a motor pulse number;
accordingly converting into a control signal for the motor driving component according to the mapping relationship; and
actively adjusting the relative distance between the displaying component of the head-mounted display and the optical component by the motor driving component according to the control signal;
wherein the accordingly converting into a control signal for the motor driving component according to the mapping relationship comprises:
calculating a gear difference between a target diopter value and a current diopter value;
calculating a desired motor pulse number according to the gear difference;
accordingly converting the motor pulse number into a control signal of the motor driving component according to the mapping relationship, and outputting the control signal; and
wherein a driving accuracy range of the motor driving component is ±0.010 mm.