[OPTICAL REVIEW Vol. 7, No. 4 (2000) 337-340]

Characteristics of a Lens System Using Low-Dispersive Radial Gradient-Index Material

Hirofumi TSUCHIDA, Shuichiro OGASAWARA and Kimiaki YAMAMOTO

Olympus Optical Co., Ltd. Corporate Research Division, 2-3, Kuboyama-cho, Hachioji, Tokyo, 192-8512 Japan

Performance of a single bi-plano lens that uses low-dispersive radial gradient-index (GRIN) material is evaluated and is shown to suffice for photographic objectives of general use. Also, investigating the dispersion property, it is shown that the Hertzberger equation is applicable to the radial GRIN material.

Key words : radial gradient-index, Wood lens, lens system, imaging system, optical design, measurement, evaluation, Sol-Gel method, low dispersion, chromatic aberration