Digital optical phase reverser adjustment device and method
A technology of optical phase inversion and phase invertor, applied in the field of adaptive optics, can solve problems such as lack of versatility, and achieve the effects of strong versatility, low price and simple structure
Inactive Publication Date: 2014-09-03
CHINA JILIANG UNIV
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[0007] The invention provides a calibration method for a digital optical phase-phase inverter, which simplifies the calibration steps and overcomes the problem of insufficient versatility of the original method
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[0055] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited thereto.
[0056] Such as figure 1 Shown is the schematic diagram of the structure of the digital optical phase inverter 6 involved in the present invention, including:
[0057] A beam splitting prism 61 , a digital camera 62 (that is, an optical phase inverter digital camera), a spatial light modulator 63 , a first adjustment device 64 and a second adjustment device 65 .
[0058] Wherein, the beam splitting prism 61 can perform 50-50 splitting of the incident light; the first adjusting device 64 is responsible for adjusting the spatial position and inclination of the digital camera 62, and the second adjusting device 65 is responsible for adjusting the spatial position and inclination of the spatial light modulator 63; The pixels of the digital camera 62 and the spatial light modulator 63 are equal in size and ...
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The invention discloses a digital optical phase reverser adjustment device, which comprises a light source module for providing short-coherence length collimated light, an object stage for placing the digital optical phase reverser, a digital camera for imaging interference fringes, a reflection imaging light path module for digital camera position adjustment, and a reflector for switching the light path between the digital camera and the reflection imaging light path module, wherein the whole light path is distributed in an L-type right angle mode with the object stage as the center. The invention also discloses a digital optical phase reverser adjustment method. As a result of equal-size imaging, coincidence of corresponding transverse positions and one-to-one correspondence of pixels of the optical phase reverser digital camera and a spatial light modulator can be ensured only by one time of positioning, the number of lattices inside a checkerboard pattern is gradually increased to enable the boundary to be gradually intensive, adjustment is carried out repeatedly, the transverse positioning precision is enhanced, and the final performance of the digital optical phase reverser is ensured.
Description
technical field [0001] The invention relates to the field of adaptive optics, in particular to a device and method for adjusting a digital optical phase-phase inverter. Background technique [0002] Light scattering has always been one of the major challenges in the design of optical imaging systems. Due to the light scattering caused by the irregularity of the refractive index, it will increase the background noise of the system and bring additional wave aberration, and then affect the resolution and contrast of optical imaging, which has been seriously affecting astronomical telescopes and microscopes The imaging quality of many optical imaging systems. [0003] In order to solve the above problems, people have developed the concept of so-called adaptive optics since the 1950s, through the artificial correction of the light wavefront connected to the light field, to reduce the impact of scattering and improve the imaging quality. After decades of development, the current...
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Inventor 李旸晖陈龙芮丛珊史召邑
Owner CHINA JILIANG UNIV