Analysis of Optical Performance in Blue Light Blocking Lenses

서지정보

ㆍ발행기관 : 대한시과학회 ㆍ수록지정보 : 대한시과학회지 / 19권 / 4호
ㆍ저자명 : Hang-Seok Lee, Ki-Seok Lee, Ki-Choong Mah

목차

Ⅰ. Introduction
Ⅱ. Methods
1. Materials
2. Experiments
1) Measurement environment
2) Measurement items
3) Image analysis
3. Statistics
Ⅲ. Results and discussions
1. Optical characteristics of blue lightblocking lens
2. Comparison of optical characteristicsof coated lens and tinted lens
3. Correlation analysis of luminoustransmittance and blue lighttransmittance
4. Changes in color accuracy and clarityof LED display with blue light blockinglens
5. Correlation analysis of changes inoptical performance and color accuracy
6. Correlation analysis of changes inoptical performance and clarity
7. Comparison of changes in coloraccuracy and clarity by luminance
Ⅳ. Conclusions
References

한국어 초록

목적: 청광차단렌즈의 광학적인 성능을 분석하고, 청광차단렌즈가 디스플레이의 색상 및 선명도에 미치 는 영향을 분석하고자 한다. 방법: 시감투과율이 80% 이상인 16종의 청광차단렌즈를 대상으로 분광광도계를 이용하여 청광투과율을 측정하였고, 카메라 화질 평가 장비를 이용하여 청광차단렌즈에 의한 LED 디스플레이의 색재현성과 선명도 의 변화를 휘도별(20 nit, 110 nit, 400 nit)로 측정하였다. 결과: 청광차단렌즈의 광학적인 특성은 제작방식에 따라 차이가 있었다. 코팅렌즈(n=8)는 착색렌즈(n=8) 보다 시감투과율과 청광투과율이 유의하게 높았다(p<0.05). 또한 코팅렌즈는 시감투과율과 청광투과율이 유 의한 상관성을 보였지만(r=0.714), 착색렌즈는 시감투과율과 청광투과율이 유의한 상관성을 보이지 않았다. 청광차단렌즈(n=16)는 시감투과율과 청광투과율이 유의한 상관성을 보였지만(r=0.433), 시감투과율과 청 광투과율은 디스플레이의 색재현성과 선명도의 변화와 유의한 상관성을 보이지 않았다. 청광차단렌즈는 휘 도가 높은 조건(400 nit)에서 색재현성과 선명도를 향상시켰지만, 휘도가 낮은 조건(20 nit, 110 nit)에서는 색재현성과 선명도를 저하시켰다. 결론: 청광차단렌즈의 광학적인 특성이 제작방식에 따라 차이가 있는 것을 확인하였고, 청광차단렌즈가 디스플레이의 색상 및 선명도에 미치는 영향이 휘도에 따라 차이가 있는 것을 확인하였다. 따라서 본 연구의 결과가 청광차단렌즈의 성능에 대한 참고 자료로 활용될 수 있을 것이라고 사료된다.

영어 초록

Purpose: To analyze the optical performance of the blue light blocking lens and the influence on the display color and the clarity. Methods: The blue light transmittance of 16 blue light blocking lenses having luminous transmittance more than 80% were measured by spectrophotometer, and the influence of the blue light blocking lens on the color accuracy and the clarity in LED display at different luminance levels (20 nit, 110 nit and 400 nit) were measured by equipment for the camera image quality evaluation. Results: The blue light blocking lens showed the difference in the optical performance depending on the manufacturing method. The coated lenses (n=8) showed higher luminous transmittance and blue light transmittance than the tinted lenses (n=8), and it showed the significant difference in the luminous transmittance (p<0.05). The luminous transmittance and blue light transmittance of coated lens showed significant positive correlation (r=0.714), but the tinted lens did not show the significant correlation between the luminous transmittance and the blue light transmittance. The luminous transmittance and the blue light transmittance of the blue light blocking lenses (n=16) was showed significant positive correlation (r=0.433), and both the luminous transmittance and the blue light transmittance did not show the significant correlation with the changes in the color accuracy and the clarity. The color accuracy and the clarity by the blue light blocking lens was increased at high luminance (400 nit), but it was decreased at low luminance (20 nit and 110 nit). Conclusion: The difference in the optical characteristics based on manufacturing method was investigated, and that the influence on the color accuracy and the clarity was investigated according to the luminance level of LED display. Therefore, the results of this study were considered to suggest the basic data for the performance of blue light blocking lens.

참고 자료

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