Device and method for measuring relative spectral response of a broadband imaging sensor

Abstract

The invention discloses a device and method for measuring the relative spectral response of a wide-band imaging sensor, which can be used for spectral calibration of various wide-band imaging sensors, and solves the problem of measuring the spectral response of the imaging sensor in the prior art. Traditional spectral calibration light sources cannot meet the requirements of measuring the relative spectral response of different spectral resolutions and spectral ranges, or the spectral resolution and luminous flux are low. The device comprises a calibration light source, an optical filter, a homogenized cylindrical light guide tube, a diaphragm, a collimating mirror, a time modulation interferometer, an integrating sphere and a wide-band imaging sensor arranged in sequence along the optical path. At the same time, the invention also proposes a relative spectral response measurement method of a broadband imaging sensor, which uses a broadband calibration light source to generate time-domain interference signals, and has the technical advantages of high throughput and high spectral resolution.

Description

technical field [0001] The invention belongs to the field of wide-band imaging sensors, and in particular relates to a relative spectral response measurement device and method of wide-band imaging sensors, which can be used for spectral calibration technology of various wide-band imaging sensors. Background technique [0002] The imaging sensor is an important photoelectric conversion device, which can convert the radiation information imaged to the focal plane of the optical system into an image. The spectral response of the imaging sensor is an important technical index for evaluating the corresponding ability of the sensor, which has a direct impact on the imaging ability. In the prior art, when measuring the spectral response of an imaging sensor, commonly used relative spectral calibration light sources mainly include spectral emission lines, spectral absorption peaks, monochromators, tunable lasers, and the like. Among them, the wavelength positions of spectral emissio...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the requirement that in the prior art, when measuring the spectral response of the imaging sensor, the traditional spectral calibration light source commonly used cannot realize the measurement of the relative spectral response of different spectral resolutions and spectral ranges, or It is the problem of low spectral resolution and luminous flux. A relative spectral response measurement device and method for broadband imaging sensors is proposed. This device and method can be used for spectral calibration technology of various broadband imaging sensors. It has high throughput, Technical Features of Hyperspectral Resolution

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