Invention Grant
- Patent Title: Bulb-type lamp
- Patent Title (中): 灯泡型灯
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Application No.: US13818571Application Date: 2011-08-29
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Publication No.: US08975806B2Publication Date: 2015-03-10
- Inventor: Toshitake Kitagawa , Makoto Sakai
- Applicant: Toshitake Kitagawa , Makoto Sakai
- Applicant Address: JP Kanagawa
- Assignee: Toshiba Lighting & Technology Corporation
- Current Assignee: Toshiba Lighting & Technology Corporation
- Current Assignee Address: JP Kanagawa
- Agency: Patterson & Sheridan LLP
- Priority: JP2010-194975 20100831; JP2010-194976 20100831; JP2010-194977 20100831; JP2011-182975 20110824
- International Application: PCT/JP2011/069441 WO 20110829
- International Announcement: WO2012/029711 WO 20120308
- Main IPC: H01J5/16
- IPC: H01J5/16 ; H01J61/40 ; H01K1/26 ; H01K1/30 ; G02B3/00 ; F21K99/00 ; F21V5/00 ; F21V5/04 ; F21V7/00 ; F21V19/00 ; F21V3/02 ; F21Y101/02 ; F21V13/02
Abstract:
A lens includes a first lens section and a second lens section, which are integrally formed. The first lens section is formed in a hemispherical shell shape including a first recess opened toward one side of an optical axis direction in which light from a light source is made incident. The second lens section is formed in a hemispherical shell shape including a second recess opened toward the other side of the optical axis direction.
Public/Granted literature
- US20130221829A1 LENS, LIGHTING DEVICE, BULB-TYPE LAMP, AND LUMINAIRE Public/Granted day:2013-08-29
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