High-Quality Laser-Beam Recording Of Color Television Signals On 16MM Color Film

1979 ◽  
Author(s):  
Yukio Sugiura ◽  
Tosio Motoki ◽  
Hitoshi Masuko
Keyword(s):  
Laser Beam ◽  
High Quality ◽  
Color Film ◽  
Color Television

scholarly journals APPLICATION OF ADDITIVE TECHNOLOGIES IN MODERN FOUNDRY PRODUCTION

2021 ◽  
Vol 117 (2) ◽  
pp. 20-27
Author(s):  
Zhannur Begendikova ◽  
Amina Bukayeva
Keyword(s):  
Laser Beam ◽  
New Products ◽  
Machine Building ◽  
Global Market ◽  
Model Material ◽  
Additive Technologies ◽  
The Body ◽  
Cad Model ◽  
High Quality ◽  
Building Products

The paper studies and analyzes the use of additive technologies in modern foundry production, determining their innovative development to create new products with high quality, reliability and determining its competitiveness in the world market of machine-building products. The essence of SLS-technology is defined as follows: model material - polystyrene powder with particle size of 50-150 microns - is rolled by a special roller on the working platform installed in a sealed chamber with an inert gas atmosphere - nitrogen. The laser beam "runs" where the computer "sees" the "body" in the given section of the CAD-model, as if "shading" the section of the part, as it is done by the constructor with a pencil on the drawing. In this case the laser beam is a source of heat, under the influence of which sintering of polystyrene particles takes place (working temperature - about 120°С). SLA, Polyjet and DLP technologies are the most widespread for metal casting. The first method involves sequential "running" of the laser beam over the entire surface of the layer to be formed where the model "body" is in the cross section. The second method of curing is performed by a beam in the form of a line in the process of layer formation due to radiation from a controlled ultraviolet lamp. The third way implies illumination of the whole layer simultaneously by creating the so-called mask - a "photo" of the current CAD-model section. Thus, additive technologies in modern foundry production have radically reduced labor intensity and costs of creating new products, which have high quality and reliability indicators and determine their competitiveness in the global market of machine-building products.

Ambient Temperature Temperbead Welding Using the Underwater Laser Beam Welding Process

2010 ◽  
Author(s):  
Bruce Newton
Keyword(s):  
Laser Beam ◽  
Ambient Temperature ◽  
Laser Beam Welding ◽  
Welding Process ◽  
Nuclear Industry ◽  
High Quality ◽  
Gas Tungsten Arc ◽  
Class 1 ◽  
Gtaw Process ◽  
Underwater Laser

Ambient temperature temperbead welding using the Machine Gas Tungsten Arc Welding (GTAW) process is widely accepted in the nuclear industry. GTAW machine ambient temperature temperbead welding, addressed in ASME Code Case N-638, has been used to repair ASME Class 1 components in numerous safety related applications. Underwater laser beam welding (ULBW) is gaining increasing industry recognition as a method for producing high quality welds in high radiation environments. Since ULBW enables high quality weld deposition in underwater environments, the process enables water to serve as a radiation moderator, reducing personnel exposure levels. ULBW’s advantages go beyond radiation exposure reductions, and this paper will provide the reader a better understanding of the ULBW process’s capabilities and properties. A recently formed ASME Task Group is preparing a new Code Case that will delineate specific requirements and essential variables governing use of ULBW to repair ASME Class 1 components. In addition, this Code Case will provide specific rules for use of the ULBW process for ambient temperature temperbead welding. Extensive testing has been performed to demonstrate ULBW’s capabilities with regard to ambient temperature temperbead welding in an underwater environment, and this paper summarizes testing and test results. It also provides a technical summary of the new Code Case, it’s requirements, and summarizes several of the bases for these requirements.

Laser-Beam Recorder for Color Television Film Transfer

1971 ◽  
Vol 80 (9) ◽  
pp. 699-703 ◽  
Author(s):  
Leo Beiser ◽  
Wendell Lavender ◽  
Renville H. McMann ◽  
Robert Walker
Keyword(s):  
Laser Beam ◽  
Television Film ◽  
Color Television ◽  
Film Transfer

A High-Quality Optical Sound Recording System Using a Scanned Laser Beam

SMPTE Journal ◽  
1980 ◽  
Vol 89 (2) ◽  
pp. 95-97 ◽  
Author(s):  
T. Taneda ◽  
Y. Sugiura ◽  
T. Motoki ◽  
G. Oishi ◽  
H. Miyatera ◽  
...  
Keyword(s):  
Laser Beam ◽  
Recording System ◽  
Sound Recording ◽  
High Quality

Evaluation of the Effects of a Head-mounted Display on Ocular Accommodation

1998 ◽  
Vol 7 (3) ◽  
pp. 278-289 ◽  
Author(s):  
Charles Neveu ◽  
Ted Blackmon ◽  
Lawrence Stark
Keyword(s):  
Measured Data ◽  
Full Length ◽  
Short Term ◽  
High Quality ◽  
Ocular Accommodation ◽  
Head Mounted Display ◽  
Control Subjects ◽  
Before And After ◽  
Color Television ◽  
Short Term Effects

We evaluated a commercially produced head-mounted display (HMD) to determine its short-term effects on human ocular accommodation. Thirteen subjects (seven men and six women, ranging from 13 to 44 years old) were tested for changes in a number of parameters before and after viewing a full-length movie (approximately two hours) on a HMD. As a control, subjects were also tested before and after viewing a movie on a high-quality NTSC color television, and also before and after a one-hour intermission. Accommodation dynamics and range were measured. Data showed wellknown trends due to subject age. Only one statistically significant change was found: a slight increase in the latency of relaxation accommodation after HMD viewing.

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