Coordinates unification technique of multi-sensors in laser vision alignment system for vehicle wheel

High-resolution transmission electron microscopy must attain utmost accuracy in the alignment of incident beam direction and in astigmatism correction, and that, in the shortest possible time. As a method to eliminate this troublesome work, an automatic alignment system using the Slow-Scan CCD camera has been introduced recently. In this method, diffractograms of amorphous images are calculated and analyzed to detect misalignment and astigmatism automatically. In the present study, we also examined diffractogram analysis using a personal computer and digitized TV images, and found that TV images provided enough quality for the on-line alignment procedure of high-resolution work in TEM. Fig. 1 shows a block diagram of our system. The averaged image is digitized by a TV board and is transported to a computer memory, then a diffractogram is calculated using an FFT board, and the feedback parameters which are determined by diffractogram analysis are sent to the microscope(JEM- 2010) through the RS232C interface. The on-line correction system has the following three modes.

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Laser vision plugs gap

Nature ◽

10.1038/news020506-5 ◽

2002 ◽

Cited By ~ 1

Author(s):

Philip Ball

Keyword(s):

Laser Vision

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Faculty Opinions recommendation of Long-term follow-up after laser vision correction in physicians: quality of life and patient satisfaction.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.718293989.793492928 ◽

2014 ◽

Author(s):

Karl Stonecipher

Keyword(s):

Quality Of Life ◽

Patient Satisfaction ◽

Vision Correction ◽

Long Term Follow Up ◽

Laser Vision

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A high-resolution solar spectrum 2000 Å–2200 Å

Symposium - International Astronomical Union ◽

10.1017/s0074180900102165 ◽

1970 ◽

Vol 36 ◽

pp. 271-273

Author(s):

B. B. Jones ◽

B. C. Boland ◽

R. Wilson ◽

S. T. F. Engstrom

Keyword(s):

High Resolution ◽

Solar Spectrum ◽

Solar Image ◽

Roll Control ◽

North East ◽

The North ◽

Alignment System ◽

Optical Alignment ◽

South Axis ◽

System Operating

A high-resolution solar spectrum in the range 2000–2200 Å was obtained in a recent flight of a sunpointing Skylark rocket. This was launched at 04.21 hr UT on April 22, 1969 from Woomera and reached an apogee of 178 km. An optical alignment system operating on the main vehicle pointing system gave a net stabilisation of ±3 arc sec in the position of the solar image relative to the spectrograph slit. The slit, of length 1.0 mm, was set in the north-east quadrant parallel to and 5 arc min from the north/south axis, its lower edge being 1 arc min from the equator. The roll control of ±2.5° was provided entirely by the standard Elliott Bros. type of vehicle stabilisation.

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Transepithelial Photorefractive Keratektomy after a Clear Lens Exchange

Vision ◽

10.3390/vision5010008 ◽

2021 ◽

Vol 5 (1) ◽

pp. 8

Author(s):

Diego de Ortueta

Keyword(s):

Refractive Lens Exchange ◽

Visual Outcomes ◽

Vision Correction ◽

Refractive Lens ◽

Laser Vision ◽

Lens Surgery ◽

Optical Zone ◽

The Mean ◽

Pulse Technology

Purpose: We evaluated the refractive visual outcomes and efficacy of Transepithelial Photorefractive Keratectomy (TransPRK) using Smart Pulse Technology with static and dynamic cyclotorsion and the AMARIS 1050 Hz RS laser platform from Schwind in the eyes after a refractive lens exchange. Setting/Venue: Aurelios Augenlaserzentrum, Recklinghausen. Methods: We retrospectively evaluated the data of 552 consecutive eyes treated with refractive lens exchange between 2016 and 2019. A total of 47 eyes (8.5%) required a touch up after the clear lens exchange. From 43 eyes of 43 patients, we obtained a minimum follow up of 3 months. In all cases, we performed a TransPRK with a minimum optical zone of 7.2 mm, centering the ablation on the vertex of the cornea. Results: The average age of the treated eyes was 57 years old, with a range between 48 and 68 years. The mean treated sphere was 0.42 diopters (D), with a range between −1.0 and +1.75 D. The mean astigmatism was 1.06 D. Postoperatively, after laser vision correction, we reduced the sphere to a mean of 0.11 D (range −0.5 to +0.75 D), and, postoperatively, the mean astigmatism was 0.25 D (range −0.75 to 0 D). The predictability for a spheric equivalent (SEQ) of 0.5 D was 91%, and for 1 D it was 100% of the cases. No eye lost more than one Snellen line. Conclusions: TransPRK with smart pulse was predictable for correcting ametropia after Clear Lens Surgery.

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Progress on the active alignment system for the IXO mirrors

10.1117/12.830841 ◽

2009 ◽

Cited By ~ 1

Author(s):

Mark D. Freeman ◽

Paul B. Reid ◽

William Podgorski ◽

David Caldwell

Keyword(s):

Alignment System

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Hardware-assisted High-performance DNA Alignment System

Proceedings of the 2020 5th International Conference on Intelligent Information Technology ◽

10.1145/3385209.3385223 ◽

2020 ◽

Author(s):

Binh Kieu-Do-Nguyen ◽

Cuong Pham-Quoc ◽

Cong-Kha Pham

Keyword(s):

High Performance ◽

Alignment System ◽

Dna Alignment

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Alignment Layer of Liquid Crystal Using Plant-Based Isoeugenol-Substituted Polystyrene

Polymers ◽

10.3390/polym13040547 ◽

2021 ◽

Vol 13 (4) ◽

pp. 547

Author(s):

DaEun Yang ◽

Kyutae Seo ◽

Hyo Kang

Keyword(s):

Liquid Crystal ◽

Surface Energy ◽

Polymer Film ◽

Uv Irradiation ◽

Molar Content ◽

Polymer Modification ◽

Alignment Layer ◽

Energy Value ◽

Alignment System ◽

Molar Percent

We synthesized a series of renewable and plant-based isoeugenol-substituted polystyrenes (PIEU#, # = 100, 80, 60, 40, and 20, where # is the molar percent content of isoeugenol moiety), using polymer modification reactions to study their liquid crystal (LC) alignment behavior. In general, the LC cells fabricated using polymer film with a higher molar content of isoeugenol side groups showed vertical LC alignment behavior. This alignment behavior was well related to the surface energy value of the polymer layer. For example, vertical alignments were observed when the polar surface energy value of the polymer was smaller than approximately 3.59 mJ/m2, generated by the nonpolar isoeugenol moiety with long and bulky carbon groups. Good alignment stability at 100 °C and under ultraviolet (UV) irradiation of 15 J/cm2 was observed for the LC cells fabricated using PIEU100 as a LC alignment layer. Therefore, renewable isoeugenol-based materials can be used to produce an eco-friendly vertical LC alignment system.

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