Abstract

본 논문에서는 LCD 디스플레이용 색채계 렌즈에 관해 근축광학적인 방법에 의한 비결상 광학설계를 소개한다. 색채계란 디스플레이 상의 측정영역으로부터 방출된 광을 빛의 3원색인 빨강, 녹색, 초록으로 분해하는 측정기기로써, 결상렌즈가 아닌 집광렌즈를 필요로 한다. 집광렌즈는 비결상 렌즈이고 측정영역과 감지영역 간의 특정한 압축비 조건을 만족해야 한다. 총체적인 비결상 광학조건을 이해하기 위해, 근축광학을 사용하여 필요충분조건을 해석적인 표현식으로 유도하였고, 나아가 간단한 공식으로 발전시켰다. 이 공식의 타당성은 CODE V와 Light-Tools를 사용하여 검증하였다. 이 공식은 색채계용 집광렌즈 뿐만 아니라, 레이저 빔의 세기를 균일하게 만들기 위한 어레이 렌즈의 설계에도 유용하게 확장 적용될 수 있다. We introduce Gaussian (or paraxial) optics that can be successfully applied to design, for use in a color analyzer, a non-imaging optical system on a measurement probe for LCD display. The color analyzer is used to decompose colored lights leaving from some measurement area on the LCD display to red, green, and blue. The color analyzer must include a condenser lens whose purpose is to gather colored lights to illuminate a small area on the sensor. In order to satisfy a reduction ratio between the measurement area and the sensing area with a non-imaging condition, a condenser lens is analytically treated by means of Gaussian optics so that good understanding of the non-imaging condenser lens is achieved as a good design is derived. As a result, the technique shows the necessity of analytical treatment in contrast to the design approach using only commercial software such as CODE-V, Light-Tools, and others. Of course, CODE V and Light-Tools are also utilized in this paper to confirm and complete the Gaussian optical design.

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