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최운상(Woon Sang Choi),박수봉(Soo Bong Park) 한국안광학회 1996 한국안광학회지 Vol.1 No.2
For youths of both sexes which can read the letter chart of 1.0 acuity without lens, tests the fogging technique and examines the development of visual acuity. And compare the numerical function with the result of the variation of the blur circle on the retina when the power of the fogging lens varies. The variation of visual acuity for the fogging technique keeps constantly the balance for binocular.
펄스형 방전플라스마에서 발생하는 가시광선의 분광특성 연구
최운상(Woon Sang Choi) 한국안광학회 1998 한국안광학회지 Vol.3 No.1
We investigated visible light radiated from Plasma focus device by time-resolved analyzed method and time-integrated analyzed method. Plasma focus consisted of two coaxial electrodes is a device that translated from electric energy of maximum 40 kV / 20 kJ in capacitor banks into visible light by electric discharge. Spectral analysis is using Monochromator( f =0.5m). Time-resolved spectrum is analyzed with a oscilloscope the light pulse of constant wavelength and time-interated spectrum does with densitometer the film which developed a constant range of wavelength. The optimum condition of visible emission was that the discharging voltage was 17kV and the gas pressure 0.5 torr Ar.
펄스형 방전플라스마에서 발생하는 가시광선의 분광 ( 2 )
최운상(Woon Sang Choi),정수자(Soo Ja Jung),김용훈(Yong Hun Kim),장준규(Jun Kyu Jang),정정복(Jung Bok Jung),신장철(Jang Cheol Shin) 한국안광학회 2000 한국안광학회지 Vol.5 No.2
We investigated visible light radiated from Plasma Focus device by time - integrated analyzed method. Plasma focus is a device that translated from electric energy into visible light by electric discharge. Spectral analysis is using Monochromator ( focal length = 0.5 m ) . Time - integrated spectrum is analyzed with densitometer the film which developed a constant range of wavelength. The condition of visible emission was that the discharging voltage was 13 kV and the working gas were Argon and Helium.
최운상(Woon Sang Choi) 한국안광학회 1997 한국안광학회지 Vol.2 No.1
Numerically compares a calculation about a variable process of visual acuity for a artificial myopia with previously the tested result. The calculation is used to the value of Gullstrand`s theoretical eyes and a method of geometrical optics. The theoretical eye simplified a entrance pupil and retina. Optical lens and eye changed a equivalent lens. Refractive power of a equivalent lens is converted to focal length within theoretical eyes, and this was calculated about relation of a blur circle on the retina and visual acuity.
최운상(Woon Sang Choi),정수자(Soo Ja Jung) 한국안광학회 2000 한국안광학회지 Vol.5 No.1
A variable process of blur circle is calculated for a artificial hyperopia. The calculation is used to the value of Gullstrand`s theoretical eye and a method of geometrical optics. The theoretical eye simplified a entrance pupil and the retina. Ophthalmic lens and eye changed a equivalent lens. Refractive power of a equivalent lens is converted to focal length within theoretical eye, and this is calculated about relation of a blur circle on the retina and ophthalmic lens.