Automation of the batching process of optical elements in the selective assembly of camera lenses

Levin, I. A.; Kachurin, Yu. Yu.

doi:10.1364/jot.88.000178

Cited by 3 publications

(1 citation statement)

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“…The position and orientation of multiple lenses in a lens set need to be accurately calibrated and positioned during assembly to minimize optical errors. [ 48,49 ] Here, we demonstrate the capability of zooming‐focused MIP‐VPP in directly fabricating an in‐situ assembled lens set. A Keplerian laser beam expander is used as a representative example.…”

Section: Resultsmentioning

confidence: 99%

Continuous Vat Photopolymerization for Optical Lens Fabrication

Han

Chen

et al. 2023

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Optical lenses require feature resolution and surface roughness that are beyond most (3D) printing methods. A new continuous projection‐based vat photopolymerization process is reported that can directly shape polymer materials into optical lenses with microscale dimensional accuracy (< 14.7 µm) and nanoscale surface roughness (< 20 nm) without post‐processing. The main idea is to utilize frustum layer stacking, instead of the conventional 2.5D layer stacking, to eliminate staircase aliasing. A continuous change of mask images is achieved using a zooming‐focused projection system to generate the desired frustum layer stacking with controlled slant angles. The dynamic control of image size, objective and imaging distances, and light intensity involved in the zooming‐focused continuous vat photopolymerization are systematically investigated. The experimental results reveal the effectiveness of the proposed process. The 3D‐printed optical lenses with various designs, including parabolic lenses, fisheye lenses, and a laser beam expander, are fabricated with a surface roughness of 3.4 nm without post‐processing. The dimensional accuracy and optical performance of the 3D‐printed compound parabolic concentrators and fisheye lenses within a few millimeters are investiagted. These results highlight the rapid and precise nature of this novel manufacturing process, demonstrating a promising avenue for future optical component and device fabrication.

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Section: Resultsmentioning

confidence: 99%

Continuous Vat Photopolymerization for Optical Lens Fabrication

Han

Chen

et al. 2023

Small

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Development of a selective assembly card of the «Koadut» lens

Kachurin

Kananykhin

Levin³

2021

J. Phys.: Conf. Ser.

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The work is devoted to the development of a selective assembly card of the «Koadut» lens, depending on the actual thickness of each of the seven lenses included in the optical scheme of the objective. Criteria for sorting options are substantiated, a macro for processing a file with the results of measurements of actual lens thicknesses, which forms an assembly card, is created. The macro was tested on a test file with a normal distribution of deviations from the nominal value of a batch of one hundred lenses.

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