Image pickup device

Abstract

Abstract PURPOSE:To shift an optical axis easily, and to eliminate the need for high assembly precision and realize high resolution by varying the angle between the normal line of the incidence or projection surface of a glass plate or prism group and the optical axis of an optical system. CONSTITUTION:Light traveling straight near the optical axis is refracted by the incidence surface of the glass plate 2 and further reflected by the projection surface. Then, the projected light is parallel to the incident light, but shifted by a specific extent. This shift extent D is D=[(n-1)/n]t.I, where (t) is the thickness of the glass plate, (n) is the refractive index, and I is the angle between the normal line of the glass plate incidence surface and optical axis, so that the shift extent D is proportional to the angle I. For the purpose, the angle between the normal line of the incidence surface and optical axis is varied by a piezoelectric oscillator 4 to shift the optical axis easily, thereby realizing the high resolution of a solid-state image pickup element without requiring high assembly precision.

Inventors

• 👤 Hideo Toyoda
• 👤 豊田　秀夫
• 👤 Yoshinori Kitamura
• 👤 北村　好徳

Bibliographic Details