Title:
【発明の名称】非結像照射用途の合致した光学面をもつズーム式ビームスプレッダ
Document Type and Number:
Japanese Patent JP2002540577
Kind Code:
A
Abstract:
A zoomable light beam spreader comprising first and second multiple-lens arrays includes a plurality of plano-convex lenses in correspondence with a plurality of plano-concave lenses having matched, curved optical surfaces. In a zero-power state, the two multiple-lens arrays are very closely spaced so that the matched convex and concave surfaces effectively cancel each other optically but, as the two arrays are separated coaxially along the axis of a light beam, beam divergence angle increases as a function of the distance of separation. A large amount of beam divergence is obtained when the curved surfaces of the plano-concave lenses of the second array are positioned beyond the focus points of the plano-convex lenses of the first array.
Inventors:
Hugh, Tamas, A
Application Number:
JP2000608212A
Publication Date:
November 26, 2002
Filing Date:
June 01, 1999
Export Citation:
Assignee:
Vari light, ink
International Classes:
G02B17/08; F21S2/00; F21S10/00; F21V5/00; F21V13/00; F21V14/00; G02B3/00; G02B15/14; G02B27/00; F21W131/406; F21Y101/00; (IPC1-7): F21S2/00; F21S10/00; F21V5/00; F21V13/00; F21V14/00; G02B17/08; G02B27/00
Attorney, Agent or Firm:
Sanada Yuzo (2 outside)