Invention Grant
US08147096B2 Lighting fixture zoom device, and lighting fixture comprising said zoom device
有权
照明灯具变焦装置和包括所述变焦装置的照明器具
- Patent Title: Lighting fixture zoom device, and lighting fixture comprising said zoom device
- Patent Title (中): 照明灯具变焦装置和包括所述变焦装置的照明器具
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Application No.: US12783772Application Date: 2010-05-20
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Publication No.: US08147096B2Publication Date: 2012-04-03
- Inventor: Yi Zhong
- Applicant: Yi Zhong
- Applicant Address: IT Seriate
- Assignee: Clay Paky S.p.A.
- Current Assignee: Clay Paky S.p.A.
- Current Assignee Address: IT Seriate
- Agency: Leason Ellis LLP
- Priority: ITMI2009A0914 20090522
- Main IPC: G02B15/14
- IPC: G02B15/14
Abstract:
A zoom device for a lighting fixture has a first lens assembly of positive refractive power; a second lens assembly of negative refractive power; and a third lens assembly of positive refractive power.The first lens assembly, second lens assembly, and third lens assembly are aligned along a longitudinal axis coincident with the axis of a light beam emitted by a light source of the lighting fixture, and are characterized by respective focal lengths, which are such as to effectively adjust the size of the images projected by the lighting fixture, while at the same time maintaining compactness of the zoom device.
Public/Granted literature
- US20100321940A1 LIGHTING FIXTURE ZOOM DEVICE, AND LIGHTING FIXTURE COMPRISING SAID ZOOM DEVICE Public/Granted day:2010-12-23
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