To configure a high reliability lens optical system by preventing light from reflecting from a boundary between a silane-coupling agent and a light absorbing film and preventing flare and a ghost from being generated, caused by abnormal reflection in a lens-barrel of a lens optical system incorporated in the lens-barrel.
In this compound lens configure by bonding a glass lens 11 and a resin lens 12 together with a silane-coupling agent 14, a light absorbing film 13 is formed between the ineffective planes 112, 113 and the silane-coupling agent 14. The light absorbing film 13 applied on the ineffective planes of the lens 11 is not formed on the surface of the silane-coupling agent 14, suppresses the reflection of light on the ineffective plane of the glass lens 11 and prevents flare and a ghost from being generated, caused by abnormal reflection in a lens optical system incorporated in a lens-barrel and thus, it becomes possible to configure the highly reliable lens optical system.
IKENO MASAYUKI
TSUCHIKANE YASUYOSHI
