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1. (WO2001035148) OPTICAL LENS AND OPTICAL SYSTEM

Pub. No.:    WO/2001/035148    International Application No.:    PCT/JP2000/007957
Publication Date: Fri May 18 01:59:59 CEST 2001 International Filing Date: Sat Nov 11 00:59:59 CET 2000
IPC: B29D 11/00
C03B 23/047
C03B 37/025
G02B 3/00
G02B 3/06
Applicants: HAMAMATSU PHOTONICS K.K.

KUSUYAMA, Yutaka

Inventors: KUSUYAMA, Yutaka

Title: OPTICAL LENS AND OPTICAL SYSTEM
Abstract:
An optical lens comprising a 1st optical member (2) which includes an optical action unit (11) acting on a light emitted from a light emitting means (21), and a 2nd optical member (3) in which the 1st optical member (2) is buried at least partially and which has an attachment plane (15) for ensuring a stable attachment to a base (50) to which the optical lens (1) is attached, characterized in that 1st light transmitting material constituting the 1st optical member (2) has a refractive index different from that of 2nd light transmitting material constituting the 2nd optical member (3). Since the 2nd optical member (3) has the attachment plane (15) by which it can be stably attached to the base(50), the optical lens (1) can be positioned easily when it is attached to the base (50) and the optical lens (1) can be attached to the base (50) and arranged on it easily.