Optical system for measuring refraction information
An optical system and optical information technology, applied in the field of optical systems, can solve the problems of inaccurate measurement results and interference, and achieve the effects of reducing interference, eliminating speckle, and improving measurement accuracy
Active Publication Date: 2021-11-09
重庆远视科技有限公司
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[0003] In the prior art, the optical system for measuring refraction information uses a laser light source, and the laser has strong interference. The light signal emitted by the light source interferes with the light signal reflected by the fundus, which will cause serious interference and lead to inaccurate measurement results.
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[0023] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0024] Please refer to figure 1 , figure 1 A schematic diagram of an optical system for measuring refractive information provided in this embodiment, as shown in the figure, the optical system for measuring refractive information includes a first optical component 11, a second optical component 12 and a reflection surface 13, the first optic...
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The invention discloses an optical system for measuring refraction information, which is characterized in that a first optical component generates a light beam and emits the light beam to a reflecting surface, the reflecting surface is used for reflecting the light beam emitted by the first optical component to project the light beam to a measured object, and the reflecting surface rotates to enable the light beam to irradiate the measured object to move; and the second optical component converges the light beams reflected by the measured object and performs imaging, so that the light beams reflected by different positions of the measured object are superposed on the same imaging result, and refraction information of the measured object is obtained according to the imaging result. Through rotation of the reflecting surface, the light beams are reflected at different positions of the measured object, the phases of the light beams reflected by the different positions of the measured object are different, and the light beams are superposed on the same imaging result to obtain refraction information of the measured object, so that the situation that speckles are generated due to interference of the light reflected by the measured object on the image sensor is eliminated; therefore, the interference is reduced, and the measurement accuracy is improved.
Description
technical field [0001] The invention relates to the technical field of optical systems, in particular to an optical system for measuring refractive information. Background technique [0002] It is necessary to measure the refractive condition of the user's eyes when fitting glasses or performing other refractive correction treatments for the user. The specific method is: project the optical signal to the fundus of the user, and measure and analyze the reflected light signal of the fundus of the user to obtain the correctness of the user's eye. refractive information. [0003] In the prior art, the optical system for measuring refraction information uses a laser light source, and the laser has strong interference. The light signal emitted by the light source interferes with the light signal reflected by the fundus, which will cause serious interference and lead to inaccurate measurement results. . Contents of the invention [0004] The object of the present invention is t...
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IPC IPC(8): G02B26/08A61B3/103
CPCG02B26/0816A61B3/103
Inventor 胡冰刘熙蒋扬均
Owner 重庆远视科技有限公司