Invention Grant
- Patent Title: Light measuring meter apparatus
- Patent Title (中): 测光仪表
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Application No.: US13004913Application Date: 2011-01-12
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Publication No.: US08786847B2Publication Date: 2014-07-22
- Inventor: Ian Lewin , John O'Farrell
- Applicant: Ian Lewin , John O'Farrell
- Applicant Address: US IL Northbrook
- Assignee: Underwriters Laboratories, Inc.
- Current Assignee: Underwriters Laboratories, Inc.
- Current Assignee Address: US IL Northbrook
- Agent Douglas W. Rudy
- Main IPC: G01J1/42
- IPC: G01J1/42 ; G01J1/02 ; G02B7/32 ; G01C3/08
Abstract:
This invention is related to a light measuring apparatus and a method of using the device. It is used to measure various photometric quantities of the light emanating from a distant source of light.
Public/Granted literature
- US20120176610A1 Light Measuring Meter Apparatus Public/Granted day:2012-07-12
Information query
