Light emitting diode detection measuring tool

Abstract

The invention discloses a general measuring tool for detecting a light emitting diode (LED) light source. The measuring tool comprises a housing portion and a test portion. The housing portion is provided with an opening at least towards one end to install a hollow cylinder of the test portion; the test portion comprises a support plate arranged at an opening end portion and a fin extending towards the inner side of the housing portion from the support plate; the central portion of the support plate is provided with a through hole penetrating the support plate; the through hole communicates with a vacuum pump outside the housing portion; an annular refrigeration chip which surrounds the through hole to enable the LED to be tested at a constant temperature is embedded in the outer side of the support plate; the refrigeration surface of the refrigeration chip is provided with an electrode support in a pasting mode; and the central portion of the electrode support is provided with a gas hole communicating with the through hole and a pair of electrodes which are close to the gas hole, are arranged at any two diagonal sides and already communicate with an external control power source to guide positive and negative voltages. When the central portion, which is in the backward direction of a light extraction surface, of an LED to be detected abuts against the gas hole, the suction supplied by the pump attaches the LED to the electrode support, and an LED bottom pole plate and the pair of electrodes are enabled to correspondingly communicate so as to supply power to the LED.

Description

technical field [0001] The invention relates to a light-emitting diode detection measuring tool, in particular to a light-emitting diode attached to the area to be tested through suction, which can provide a constant temperature environment during detection, has the advantages of not blocking light, easy operation, high accuracy, and is suitable for different It is a universal measuring tool applicable to the size, shape, structure and type of light-emitting diodes. Background technique [0002] The light and power measurement system for detecting light-emitting diodes (LED, Light Emitting Diode) is to install the measuring tool carrying the light source of the light-emitting diode into the integrating sphere, and connect the surrounding spectrum analyzer, electrical parameter measuring instrument and light-emitting diode to control the power supply to achieve The function of detecting parameters such as chromaticity coordinates, color temperature, color rendering index, col...

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Problems solved by technology

After long-term experiments and careful verification, the creators have confirmed that the luminous flux data in the initial stage of the transient state are more than double the long-term stable steady-state luminous flux data under the test conditions that will not cause damage to the light-emitting diode light source 203. The luminous flux values ​​measured at different initial moments are very different, and the reproducibility of detecting the same LED light source 203 is lost, so that only the manufacturer of the LED light source 203 vigorously advocates and provides terminal users with such transient initial data, but The actual lamp performance of the LED lighting industry is of reference value only under long-term steady-state operation, and the exaggerated data at the initial stage of the transient state provided by the manufacturer has no practical significance at all.

In the measurement method specification (CIE 127:2007, Measurement of LEDs) of the world's authoritative light-emitting diode light source 203, the measurement method for the above-mentioned initial transient state must only be available under a clear correlation between the transient state and the steady state. Conceptual description, but because the correlation will vary with LED products of different manufacturers, it is completely impossible to standardize for the majority of lighting application end users, so that it lacks practical applicability; therefore, the LED light source 203 The detection is still based on the long-term steady-state data that is consistent with the actual application and reproducible

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