Slab type converging optical transmission body

Abstract

Abstract PURPOSE:To reduce the insertion loss of a lens and facilitate the fixation of a slab lens, and to improve operability by forming a reflecting film on the flank of the slab lens. CONSTITUTION:One light measuring fiber 1 is connected to the center of an incidence surface and the reflecting film 4 is formed on the flank perpendicular to the plane of the optical axis except the incidence end surface and projection end surface of the slab lens 2 which has plural light measuring fibers 3 arrayed on the projection surface. This reflecting film should have high functional strength and superior chemical and thermal durability in addition to high reflection efficiency. A metallic vapor-deposited film of Al, etc., attains the purpose sufficiently, but the use of a total reflecting film obtained by vapor-depositing a transparent material with a low refractive index such as MgF2 eliminates extension to the incidence or projection end surface and spoils neither incident light nor projection light, which is suitable.

Inventors

• 👤 Shigeaki Omi
• 👤 成明 近江
• 👤 Hiroyuki Sakai
• 👤 裕之 坂井
• 👤 Shin Nakayama
• 👤 伸 中山
• 👤 Yoshitaka Yoneda
• 👤 嘉隆 米田
• 👤 Yoshiyuki Asahara
• 👤 浅原　慶之

Bibliographic Details