• Journal of Korean Ophthalmic Optics Society
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• v.3 no.1
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• pp.39-73
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• 1998

In the 60's to 70's, frame selection was a purely mechanical consideration almost entirely dominated by the optician and his subjective judgments. Toddy the cosmetic factor is predominant. The variety of frame color, materials, and style means that the main burden of selection has passed to the customer, leaving the optician control a subtle factor often difficult to exert. Common materials include nickel silver, Hi-nickel alloy, bronze, stainless steel, gold, gold plated, gold clad, copper beryllium, titanium and sometimes aluminium. In manufacturing of metal frames with the materials, even though fashion is the stimulant of consumer demand, all the metal frame for the prescription to refractive correction should be designed correctly styled eyewear which is cosmetically pleasing, functional correct, physically comfortable, mechanically and structurally perfectible, and temperamentally acceptable.

• Journal of Korean Ophthalmic Optics Society
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• v.14 no.1
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• pp.9-15
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• 2009

Purpose: The aim of this study is to examine various national standards and to suggest problems and improvements on KS (Korean Industrial Standards) in spectacle frames. Methods: We surveyed the latest published KS, ISO (International Organization for Standardization), JIS (Japanese Industrial Standards), DIN (Deutsches Institut fur Normung) and ANSI (American National Standards Institute) standards with relating spectacle frames. The titles that were considered in comparative study were terms and vocabulary, measuring system and terminology, marking, requirements and test methods, formers, screw threads, and others. Results: There were 9 different languages such as English (USA and UK), French, Russian, Japanese, Chinese, German, Italian and Spanish for the lists of equivalent terms and vocabulary in all standards except KS and ANSI, but gave an explanation for terms and vocabulary in only KS. Complementary terms and definitions were not existed in annex of KS and ANSI for measuring system and terminology, but they were included in annex of standards of the others. KS and ANSI standard for requirements and test methods differed from the ISO revision. Except JIS and ANSI, standards of formers were almost identical. KS standard of screw threads were similar to JIS. Standards of welded joints and nickel release did not exist in KS. Conclusions: All standards except ANSI tend to follow ISO, especially DIN is almost entirely identical to ISO. But KS is behind the times because it has been amended lately or established in accordance with older editions of ISO. Therefore, in order to assist quality control and safety for spectacle frames, KS standards shall be superseded by the specifications which is identical to ISO within a reasonable time.

• Journal of Korean Ophthalmic Optics Society
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• v.10 no.1
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• pp.83-89
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• 2005

The results that research industrial competitive power of about two hundreds frames manufactures were as follows. First, It's researched that frames industry of Daegu will be worse and worse, and 79 percent of inquiry manufactures in export and 58 percent of them in the domestic demand prospects to be worse. Second, it is analyzed that the commercial profits in 2004 was more decreased to 16.5 percent than 2002. Therefore it is studied that they will be diminished to 5---- comparing with last year by a fall in the exchange rate of the won dollar, in the export unit cost and a raise of raw material price. Third, it is researched that most competitive countries of Daegu glasses manufactures is China and the mext county is japan, ltuly and hik. Fourth, It is studied that average price of glasses of Daegu during last three years(2002~2004) was more disadvantageous than China and Hong Kong, but was more profitable than Italy and Japan by the examination that when Korea is 100, China is 82, Hong Kong 89, Italy 112, Japan 114. Fifth, It is investigated that the average of production cost in Daegu is more disadvantageous than that of China and Hong Kong but is more profitable that of Italy and Japan by the study that when average production cost of Korea is 100, that of China is 78 and that of Hong Kong 89, that of Italy 114. Sixth, It is studied that the Average personal expense of Daegu is much more disadvantageous than that of China and more profitable than Japan and Italy by the analysis that when Korea is 100, China is 74, Hong Kong 98, Japan 112, Italy 113. Seventh, It is analyzed that technique, quality, design of Daegu are more advantageous than those of China, are equal with those of Hong Kong. Eighth, It is studied that Daegu still lags behind more four and five years than developed countries and goes more oheod four years than developing countries.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.12 no.3
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• pp.22-28
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• 1998

It is required to automate a manufacturing industry of a glasses frame, because of the inaccuracy in assembly and shortage of labor. So, in this paper, rim-lock electric welding system has been developed in order to automate a electric welding process and to increase welding quality. Rim-lock electric welding system consists of circular and linear feeder, holder for welding rim and lock, and the equipment for silver-lead provision and so forth. Main controller is a V55 microprocessor which is easy to be expanded into other function. Control program is programed using 'C' language which is easier than other language in coding, modification and adding function. At the practical welding that Rim-Lock electric welding system from this study is used, we can get such advantages as uniform quality of electric welding, continuous operation and improved productivity.

• Journal of Korean Ophthalmic Optics Society
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• v.9 no.1
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• pp.125-134
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• 2004

By applying the test methods of "Protection Eyewear Standard (KS P 8147)", "Glasses Frame Standard (KS G 3306)" and "Lens Standard for Sunglasses (KS P 4404)", this study analyzed optical functions of sunglasses now being sold in a road shop (A shop), a fashion goods store (B shop), a shop of highway rest area (C shop) and an optical shop (D shop). When compared with sunglasses (UV transmittance rate 8.8%) of a road shop, UV Block effects of sunglasses (UV transmittance rate 0.7%) of an optical shop showed good results. In addition, the average surface resistance against abrasion for sunglasses which was sold at an optical shop was 1.4% that was much higher than that of sunglasses of a road shop(2.2%).

• Journal of Korean Ophthalmic Optics Society
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• v.13 no.4
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• pp.19-24
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• 2008

Purpose: The purpose of this research is to induce domestic eyewear industry to invest in research and development of eyewear manufacturing technology and eyewear design. Methods: Analysis of Industrial Rights using data issued by Korea Intellectual Property Office and search results by 'Kipris' (Korea Intellectual Property Rights Information Service). Results: A number of Industrial Rights Application related to eyewear of eyewear industry has rapidly increased since 1980's. The ratio of Patent and Design Right applications related to eyewear by foreigner has continually decreased, 55%, 32.9% in 1980's, 40%, 22% in 1990's and 27%, 13.9% in 2000's. This shows domestic eyewear industry has developed technology and design on eyewear more and more. But numbers of Design Right applications in 1990's were about 60 in a year and those in 2000's were about 70 in a year. This may explain a few eyewear company have applied for Design Right. Conclusions: It is evident that domestic eyewear industry make an more effort and investment to develop eyewear manufacturing technology and design, but not enough. Actually, we don't know exactly how they develop and how much they invest. Now we need to research problems what they have and environments what they face.

• International Commerce and Information Review
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• v.15 no.4
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• pp.27-46
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• 2013

The objective of this study is to analyze the export performance of Korean eyewear products in China market, and derive some implications from the results of the analysis. For the analysis, the statistical data from 2003 to 2013 produced by Korea International Trade Association were used, and Market Share Index, Trade Specialization Index, and Revealed Comparative Advantage Index as an analyzing method were selected. According to the analysis, Korea's eyewear goods market share in China's glasses market was less than 5% on average during the analyzing period amid recording chronic deficits in Korea's eyewear commodities trade to China and by product, contact lenses were competitive, while eyeglass frames, eyeglasses, eyeglass lenses and sunglasses were not competitive. The suggestions for revitalizing Korea's eyewear products exports to the China market are as follows: First, Korea's glasses industry must enhance the ability to develop creative and distinctive product design to meet the needs of Chinese consumers. Second, to meet Chinese consumers preferences, Korea's glasses industry must actively produce new materials and functional products. Third, Korea's glasses industry must improve brand awareness through the continuous launch of new products for the Chinese market. Fourth, Korea's glasses industry must actively promote strategic alliances with domestic and foreign enterprises, and the Hallyu marketing. Fifth, Korea's glasses industry must reasonably improve the unusual products distribution system. Finally, The government must prepare a systematic support system for eyeglasses industry.

• Journal of the Korean Society for Nondestructive Testing
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• v.24 no.3
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• pp.233-239
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• 2004

Smart material is used in various applications such as for glass frame, for medical instruments and for a part of sensors. Smart composite materials ran be applied to a part of aircraft and to the on-line monitoring system for industrial structures, using the shape memory effect. However, it is very difficult to simulate and analyze the shape memory effect in smart composites. In this paper, a two dimensional axisymmetric model was proposed to analyze the smart composite of one fiber and matrix using the finite element method(FEM). The finite element analysis was carried out in two renditions of the room temperature(293K) and a higher temperature (363K). The results we.e compared with the experimental results to confirm the validity of the analysis. In addition, the acoustic emission(AE) technique was used to study the microscopic damage behavior and the effect of pre-strains on TiNi/A16061 shape memory alloy composite.