scholarly journals Optical Design for Laser Diode Scanner Headlamp with Efficiently Distributed Optical Power for Adaptive Driving Beam System of Automobiles

2021 ◽  
Vol 11 (2) ◽  
pp. 793
Author(s):  
Hyun Choi ◽  
Won-Sup Lee ◽  
Bairi Sri Harisha ◽  
Wan-Chin Kim ◽  
Jiseok Lim
Keyword(s):  
High Resolution ◽  
Light Source ◽  
Laser Diode ◽  
Optical System ◽  
High Efficiency ◽  
Optical Power ◽  
Scanning System ◽  
Scanning Method ◽  
Optical Scanning ◽  
Optical Scanning System

The illumination optical system using a laser diode has advantages such as small size and high efficiency compared to an optical system using a conventional light source. In particular, its advantages can be maximized in high-resolution spatial light modulation. Based on these advantages, research to apply laser diode scanning to high-resolution adaptive driving beam (ADB) is currently being actively conducted. To construct a high-resolution illumination optical system for an ADB system using a single laser diode as a light source, the configuration of an optical scanning system is essential. In the general high-speed scanning method, the optical power at the center is relatively smaller compared with that at the edge because of the faster scanning speed when the center is illuminated. This causes large losses in automotive lighting optical system where the optical power in the center should be higher. Herein, we propose an optical system that can change the light power distribution of the center and the edge by applying a prism. In addition, by producing a prototype of an optical scanning system, the effect of efficiently distributing optical power by the designed optical scanning system was experimentally verified.

Improvements of an optical scanning system for indoor localization based on defuzzification methods.

2021 ◽  
pp. 1-1
Author(s):  
Jesus E. Miranda-Vega ◽  
Arnoldo Diaz-Ramirez ◽  
Oleg Sergiyenko ◽  
Wendy Garcia-Gonzalez ◽  
Wendy Flores-Fuentes ◽  
...  
Keyword(s):  
Indoor Localization ◽  
Scanning System ◽  
Optical Scanning ◽  
Optical Scanning System

Optical Scanning in the Lateral Eyes of the Copepod Copilia

Perception ◽  
1972 ◽  
Vol 1 (3) ◽  
pp. 247-261 ◽  
Author(s):  
A C Downing
Keyword(s):  
Image Plane ◽  
Optical Measurements ◽  
Scanning System ◽  
Intact Female ◽  
Stripe Pattern ◽  
Positive Evidence ◽  
Optical Scanning ◽  
Receptor Structure ◽  
Behavioural Evidence ◽  
Optical Scanning System

The lateral eyes of the female Copilia are exceptionally large for a creature of its size but have very few receptors. These receptors appear to scan the image plane of the anterior lenses of the eye, but until now there has been no behavioural evidence linking their movement positively with the functioning of the eyes, though there is some (disputed) evidence that it is merely a side-effect of peristalsis. On channel-capacity grounds we might not have expected optical scanning to occur in biological systems, so any positive evidence for scanning, in the engineering sense, is particularly interesting. Optical measurements of the position of the image plane, in live intact female Copilia quadrata, generally corroborate Exner's (1891) finding that an image is in focus at the plane of the distal ends of the receptors, though the position of best focus seems slightly in front of a second lens, behind which the receptor structure lies. An alternative optical schema of Wolken and Florida (1969) is disproved. The position of focus satisfies minimal optical conditions for scanning. Movements of a coloured stripe pattern, used as a test object for the optical measurements, elicited the putatively scanning movements of the receptor structure, suggesting strongly that these really are an intrinsic part of normal visual functioning, not an epiphenomenon. It was also discovered that intermittent swimming movements of the limbs tend to be preceded by these photoreceptor movements. Both findings support the hypothesis that Copilia's eye is an optical scanning system.

Calibration of high-aspect ratio quality control optical scanning system

2013 ◽  
Author(s):  
Aneliya Karadzhinova ◽  
Timo Hildén ◽  
Jouni Heino ◽  
Maria Berdova ◽  
Rauno Lauhakangas ◽  
...  
Keyword(s):  
Quality Control ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Scanning System ◽  
Optical Scanning ◽  
Optical Scanning System

Comparative Analysis of Trash Contamination in Cotton by Optical Scanning

1977 ◽  
Vol 99 (1) ◽  
pp. 46-50 ◽  
Author(s):  
D. W. Lyons ◽  
R. L. Barker
Keyword(s):  
Image Analysis ◽  
Comparative Analysis ◽  
Optical Imaging ◽  
Standard Method ◽  
Scanning System ◽  
Optical Scanning ◽  
Absolute Indication ◽  
Grade Classification ◽  
Optical Scanning System

Successful utilization of an automated optical scanning system for the purpose of assessing the trash factor included in the grade classification of cotton was demonstrated in a study that featured analysis of cottons representing a broad range of trash levels and lint colors. The utility of image analysis as an absolute indication of grade-related differences in cotton was statistically confirmed. Sources contributing to the variability of nonlint assessment by optical imaging were defined and analyzed, as was the influence of interrelated grade factors such as lint coloration on optically measured contaminant levels. In a direct comparison with the Shirley Analyzer, computerized optical scanning was shown to be at least as reliable as this standard method for determining nonlint waste.

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