阅读说明：本技术 可调谐光源及内窥镜系统 (Tunable light source and endoscope system ) 是由 王璞 岳蜀华 杨雪芳 索艳莉 高正 于 2020-04-28 设计创作，主要内容包括：一种可调谐光源级内窥镜系统。可调谐光源(100)包括：光谱发生器(10)、导光器件(20)和调光器件(30)。光谱发生器(10)可以提供波长范围较宽的超连续光。导光器件(20)可以对超宽光谱进行平行化的滤波处理和色散展开,以得到类平行光。调光器件(30)可以对类平行光进行波长和强度的选择性处理,以得到波长和强度均可调节的可调谐光。调光器件(30)可以得到特定波长范围和特定强度范围的光谱。该可调谐光源(100)的光源波长选取范围广,既可自由选取特定波长的光,又可自由组合多个不同波长的光。可调谐光源(100)可以在临床诊断过程中提供波长和强度均可调节的可调谐光。(A tunable light source level endoscope system. A tunable light source (100) comprising: a spectrum generator (10), a light guide device (20) and a light modulation device (30). The spectral generator (10) can provide supercontinuum light over a wide range of wavelengths. The light guide device (20) can perform parallel filtering processing and dispersion expansion on the ultra-wide spectrum to obtain quasi-parallel light. The light-adjusting device (30) can selectively process the wavelength and the intensity of the parallel-like light to obtain tunable light with adjustable wavelength and intensity. The dimming device (30) can obtain a spectrum of a specific wavelength range and a specific intensity range. The light source wavelength of the tunable light source (100) is wide in selection range, and light with specific wavelength can be freely selected and light with a plurality of different wavelengths can be freely combined. The tunable light source (100) may provide tunable light with adjustable wavelength and intensity during clinical diagnostics.)

A tunable light source, comprising:

a spectrum generator for outputting an ultra-wide spectrum;

the light guide device is arranged on the light emitting side of the spectrum generator and is used for carrying out parallelization filtering processing and dispersion expansion on the ultra-wide spectrum to obtain quasi-parallel light;

and the light adjusting device is arranged on the light emitting side of the light guide device and is used for selectively processing the wavelength and the intensity of the quasi-parallel light so as to enable the tunable light source to realize the functions of free frequency selection and multi-frequency simultaneous selection.

The tunable light source of claim 1, wherein the light guide comprises:

the filter element is arranged on the light-emitting side of the spectrum generator and is used for filtering the ultra-wide spectrum to obtain continuous light with the wavelength within the visible light range;

the dispersion expansion element is arranged at the light outlet of the filter element and is used for carrying out dispersion expansion on the continuous light with the wavelength within the visible light range; and

and the beam expanding element is arranged at the light outlet of the dispersion expansion element and is used for carrying out lossless transmission on the light subjected to dispersion expansion so as to obtain the quasi-parallel light.

The tunable light source of claim 2, wherein the light guide further comprises:

and the reflector is arranged on the light-emitting side of the beam expanding element and used for changing the propagation direction of the quasi-parallel light so that the quasi-parallel light is vertical to the incidence surface of the dimming device for incidence.

The tunable light source of claim 3, wherein the dimming device comprises:

and the dimming array is provided with a plurality of digital micromirror units, and the digital micromirror units in the dimming array are respectively positioned at different turnover angles, so that the wavelength and the intensity of the quasi-parallel light are selectively processed.

The tunable light source of claim 4, wherein each of the digital micromirror units has a first angle and a second angle;

when the digital micro-mirror unit is turned over to a first angle, the light dimming array reflects the light irradiated on the digital micro-mirror unit to a direction different from an output light path of the tunable light source;

when the digital micro-mirror unit is turned over to a second angle, the light dimming array reflects the light irradiated on the digital micro-mirror unit to the same direction as the output light path of the tunable light source.

The tunable light source of claim 5, wherein the first angle is 12 degrees and the second angle is-12 degrees.

The tunable light source of claim 5, wherein the dimming device further comprises:

and the internal total reflection prism is arranged on one side of the digital micromirror unit, which is far away from the light guide device, and is used for assisting the digital micromirror unit to output the tunable light with adjustable wavelength and intensity when the digital micromirror unit is turned over to a second angle.

The tunable light source of claim 7, wherein the dimming array comprises M x N digital micromirror units arranged in a matrix, M and N being positive integers;

the dimming array is considered to be composed of N digital micromirror unit rows, and each digital micromirror unit row comprises M digital micromirror units which are arranged in parallel.

The tunable light source of claim 8, wherein the light sources illuminating different digital micromirror units in the same row of digital micromirror units have different wavelengths and the same intensity.

The tunable light source of claim 7, wherein the dimming array comprises M x N digital micromirror units arranged in a matrix, M and N being positive integers;

the dimming array is regarded as being composed of M digital micromirror unit columns, and each digital micromirror unit column comprises N digital micromirror units which are arranged in parallel.

The tunable light source of claim 10, wherein the light sources illuminating different dmd units in the same row have different intensities and the same wavelength.

The tunable light source of claim 9 or 11, further comprising:

and the light condensing device is arranged on the light emitting side of the light dimming device and is used for converging and coupling the tunable light.

The tunable light source of claim 12, wherein the light concentrating device comprises:

the converging lens is arranged on the light-emitting side of the internal total reflection prism and is used for converging the tunable light; and

and the light guide beam is arranged on the light emitting side of the converging lens and used for coupling and outputting the converged tunable light.

The tunable light source of claim 12, further comprising:

and the calibration device is arranged at the output end when the calibration is needed.

An endoscopic system, comprising:

a tunable light source according to any of claims 1-14 for producing tunable light;

and the controller is connected with the tunable light source and used for sending a control signal to the dimming device so that the tunable light source generates the light required by the endoscope system.

An endoscopic system, comprising:

a spectrum generator for outputting an ultra-wide spectrum;

the light guide device is arranged on the light emitting side of the spectrum generator and is used for carrying out parallelization filtering processing and dispersion expansion on the ultra-wide spectrum to obtain quasi-parallel light;

the light adjusting device is arranged on the light emitting side of the light guide device and is used for selectively processing the wavelength and the intensity of the quasi-parallel light to obtain tunable light with adjustable wavelength and intensity;

and the light condensing device is arranged on the light emitting side of the light dimming device and is used for converging and coupling the tunable light.

The dimming device includes: a dimming array and an internal total reflection prism;

the light modulation array is provided with a plurality of digital micro-mirror units, and the digital micro-mirror units are respectively positioned at different turnover angles in the light modulation array to realize selective processing of wavelength and intensity of the quasi-parallel light;

the total internal reflection prism is arranged on one side of the digital micromirror unit, which is far away from the light guide device, and is used for assisting the digital micromirror unit to output the tunable light with adjustable wavelength and intensity when the digital micromirror unit is turned over to a second angle.

The endoscopic system of claim 16, wherein the light guide comprises:

the filter element is arranged on the light-emitting side of the spectrum generator and is used for filtering the ultra-wide spectrum to obtain continuous light with the wavelength within the visible light range;

the dispersion expansion element is arranged at the light outlet of the filter element and is used for carrying out dispersion expansion on the continuous light with the wavelength within the visible light range;

the beam expanding element is arranged at a light outlet of the dispersion expansion element and is used for carrying out lossless transmission on the light subjected to dispersion expansion so as to obtain the quasi-parallel light; and

and the reflector is arranged on the light-emitting side of the beam expanding element and used for changing the propagation direction of the quasi-parallel light so that the quasi-parallel light is vertical to the incidence surface of the dimming device for incidence.

The endoscopic system of claim 17 wherein said filter element is a visible light cold mirror, said filter element for filtering out ultra-wide spectrum of wavelengths from 400nm to 2400nm to obtain visible light wavelengths from 400nm to 700 nm.

An endoscope system according to claim 18 and wherein said dispersive deployment element is a triple prism operative to separate said visible light having a wavelength of 400-700 nm into different monochromatic lights.

The endoscopic system of claim 19 wherein the beam expanding element is a cylindrical lens for non-destructive transmission of the dispersedly expanded light to obtain the quasi-collimated light.