Compensated telescope system with programmable diffractive optic

Gruneisen, Mark T.; DeSandre, Lewis F.; Dymale, Raymond C.; Rotge, James R.; Lubin, Donald L.

doi:10.1117/1.1849552

Cited by 15 publications

(2 citation statements)

References 19 publications

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Section: Introductionmentioning

confidence: 99%

“…[1] Applications of DOEs span across a vast number of industries and include holographic displays, augmented reality (AR)/virtual reality (VR), spectroscopy, aberration correction, beam steering, beam shaping, and 3D depth sensing. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] write a DOE into a photoresist with a beam diameter of around 7 μm. A nematic LC was then placed on top of the DOE that was encoded into the photoresist.…”

Section: Introductionmentioning

confidence: 99%

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3D Switchable Diffractive Optical Elements Fabricated with Two‐Photon Polymerization

O'Neill

Salter

Zhao

et al. 2022

Advanced Optical Materials

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Direct laser writing is demonstrated by two‐photon polymerization of multi‐element diffractive optical components that can be switched on and off with an applied voltage. By exploiting the 3D capabilities of the laser microfabrication technique, multiple diffractive optical elements are written into a single liquid crystal (LC) layer. The switching behavior of the diffractive optical elements is controlled by simply changing the write‐voltage of the anisotropic polymer structures during fabrication. Initially, 2D diffraction gratings are written at different depths within the LC layer. Each element is then activated by applying a voltage of sufficient amplitude that causes the second diffractive optical element to become inactive. This is then followed by a demonstration of multi‐element computer generated holograms that are written at different depths within the LC layer. By altering the magnitude of the applied voltage, different images/patterns can be observed in the replay field using a simple electrode configuration. These compact and transmissive LC optical components could excel in applications where a degree of switchability is required but a highly pixelated fully programmable device is excessive.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D Switchable Diffractive Optical Elements Fabricated with Two‐Photon Polymerization

O'Neill

Salter

Zhao

et al. 2022

Advanced Optical Materials

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show abstract

Improvement of telescope resolution using a diffractive phase modulater

Wen

Wang²,

Kuang

2019

Sci Rep

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Metasurface, fluorescent microscopy and scanning near-field optical microscopy can improve the resolution of microscopes remarkably, while the resolution of the telescope remains unimproved constrained by its giant objective lenses and distant targets. Here we put forward a way to raise the resolution of telescopes simply by adding a binary optical thin surface around its focal plane. Simulation results show that the surface can raise the image quality in the Cassegrain and Kepler telescope. By nano-lathe, we fabricated a designed binary surface and experiment it in the Kepler telescope. The results are consistent with those of simulation results. More details of the calibrated target are resolvable on the image plane after applying the binary optical surface. It proves that the binary optic surface can make contribute to the resolution of the telescope, thus is beneficial in astronomy, military surveillance field.

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Wide Field Scanning Telescope Using MEMS Deformable Mirrors

Scott¹,

Potsaid

Wen

2010

International Journal of Optomechatronics

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Traditional optical telescopes can obtain high resolution images, but only over a narrow field of view. To image over a large field, the typical approach is to move the entire telescope to point to a particular area of interest. In this article, we consider a scanning telescope that only moves one of the optical elements in the telescope. Moving the lower inertia of a single optical element instead of the entire telescope means faster scanning, reduced vibration, and more accurate pointing. Inherent in the design is the introduction of optical aberrations due to off-axis imaging. This article presents simulation and experimental results of using deformable mirrors to correct for the offaxis aberrations. Two different types of deformable mirrors are considered: electrostatic and electromagnetic. The mirror apertures are similar in size, but the electromagnetic mirror has about twice the actuator displacement range than the electrostatic mirror. Through simulation and experiments, we demonstrated that the static field of view may be increased by 40 times with the electrostatic mirror and 80 times with the electromagnetic mirror.

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Compensated telescope system with programmable diffractive optic

Cited by 15 publications

References 19 publications

3D Switchable Diffractive Optical Elements Fabricated with Two‐Photon Polymerization

3D Switchable Diffractive Optical Elements Fabricated with Two‐Photon Polymerization

Improvement of telescope resolution using a diffractive phase modulater

Wide Field Scanning Telescope Using MEMS Deformable Mirrors

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