CN111350960A - Collimation output type color temperature adjustable light source - Google Patents
Collimation output type color temperature adjustable light source Download PDFInfo
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- CN111350960A CN111350960A CN201911298593.3A CN201911298593A CN111350960A CN 111350960 A CN111350960 A CN 111350960A CN 201911298593 A CN201911298593 A CN 201911298593A CN 111350960 A CN111350960 A CN 111350960A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/10—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type
Abstract
The invention discloses a collimation output type color temperature adjustable light source, which consists of a xenon lamp optical fiber light source, a slit, a reflector component, a reflective grating, a digital micromirror, a convergent lens, an integrating sphere, a TIR total internal reflection free-form surface lens and a collimation lens component, wherein the slit is arranged on the upper surface of the xenon lamp optical fiber light source; the xenon lamp fiber light source sequentially performs light splitting, modulation, dodging and collimation to form a collimated light beam with a specific color temperature simulation function, the color temperature simulation precision of the light source is improved, and the color temperature is continuously adjustable.
Description
Technical Field
The invention relates to a light source illumination technology, in particular to a collimation output type color temperature adjustable light source.
Background
At present, there are three main implementation modes for spectrum adjustability of a light source, which are a multi-channel optical filter scheme, a multi-wavelength LED scheme, and a precise control scheme for spectral dispersion. The multichannel optical filter scheme is characterized in that a narrow-band optical filter is utilized to differentiate a broad spectrum into a plurality of element wave bands, and the simulation of a target color temperature curve is realized in modes of variable diaphragms or optical filter attenuation and the like, so that a monochromatic light working mode cannot be realized, the process is complex, the simulation precision is low, and the color temperature cannot be continuously adjusted; the multi-wavelength LED scheme is characterized in that LEDs with different wavelengths are used as element wave bands, the element wave band energy is controlled by adjusting the current of the LEDs to realize the simulation of the target color temperature, the monochromatic light working mode cannot be realized, the structure is complex, the number of the LEDs is large, and the simulation precision is low; the spectral dispersion precise control scheme is to disperse an initial spectrum to a spatial light modulation device through a dispersion light path to realize the simulation of a target color temperature. The spectral distribution is controllable, the spectral simulation precision is high, but the output irradiance is low, and the structure is relatively complex.
Meanwhile, no matter a multi-channel optical filter scheme, a multi-wavelength LED scheme or a spectral dispersion precise control scheme is limited by the working principle, collimated light output cannot be realized, and the application range of the color temperature modulation type light source is limited.
In order to expand the application range of the color temperature modulation type light source, realize collimated light output and solve the problems of low simulation precision, incapability of continuously adjusting color temperature, complex structure and the like of the existing color temperature modulation scheme, a collimated output type color temperature adjustable light source is needed, the color temperature simulation precision is improved, and the color temperature is continuously adjustable.
Disclosure of Invention
Aiming at the problems in the prior art, the invention designs a collimation output type color temperature adjustable light source.
The collimated output light with continuously adjustable color temperature is realized through the comprehensive action of a xenon lamp optical fiber light source, a slit, a reflector component, a reflective grating, a Digital Micromirror (DMD), a convergent lens, an integrating sphere, a TIR total internal reflection free-form surface lens and a collimating lens component, so that the color temperature simulation precision is improved, and the application range of the color temperature adjustable light source is expanded.
The technical scheme adopted by the invention for solving the problems in the prior art is as follows: a collimation output type color temperature adjustable light source is designed, and consists of a xenon lamp optical fiber light source, a slit, a reflector component, a reflection grating, a digital micromirror, a converging lens, an integrating sphere, a TIR total internal reflection free-form surface lens and a collimation lens component.
The reflecting mirror assembly comprises a reflecting mirror I and a reflecting mirror II, wherein the reflecting mirror I is arranged above the reflecting grating, and the reflecting mirror II is arranged below the reflecting grating; the collimating lens component comprises a collimating lens I and a collimating lens II which are both arranged behind the integrating sphere.
The xenon lamp optical fiber light source is arranged in front of the slit, the slit is arranged in front of the reflector I, the reflector I is arranged in front of the reflection grating, the reflection grating is arranged in front of the reflector II, the reflector II is arranged in front of the digital micromirror, the digital micromirror is arranged in front of the converging lens, the converging lens is arranged in front of the integrating sphere, the integrating sphere is arranged in front of the TIR total internal reflection free-form surface lens, the TIR total internal reflection free-form surface lens is arranged in front of the collimating lens I, the collimating lens I is arranged in front of the collimating lens II, and the collimating lens II is an outlet of the collimation output type color temperature adjustable light source.
A collimated output color temperature adjustable light source as described above, wherein,
the xenon lamp optical fiber light source is used for emitting light rays with the wavelength range covering 300nm-2000 nm;
the slit is used for guiding light rays emitted by the xenon lamp optical fiber light source into the reflector I;
the reflector I is used for modulating incident light and deflecting a light path to enable the incident light to be projected to the reflective grating;
the reflection-type grating is used for carrying out dispersion treatment on incident light, subdividing the light by taking nm as a unit and projecting the light to the reflector II;
the reflector II is used for shaping the light after dispersion treatment and projecting the light to the digital micromirror;
the digital micromirror is used for receiving the subdivided light rays and projecting the subdivided light rays to each pixel of the digital micromirror, the modulation of the color temperature of the incident light rays is realized by controlling the switch of each pixel point of the digital micromirror, and the modulated light rays are projected to the convergent lens;
the converging lens is used for converging the modulated light and projecting the converged light to the integrating sphere;
the integrating sphere is used for mixing and homogenizing the light after dispersion and modulation treatment and emitting the light;
the TIR total internal reflection free-form surface lens is used for receiving light rays emitted by the integrating sphere and is matched with the collimating lens I and the collimating lens II to realize collimation output of the light rays.
A collimated output color temperature adjustable light source as described above, wherein,
light emitted by a xenon lamp optical fiber light source is projected to a reflector I after the action of a slit, the light is projected to a reflective grating through the reflector I, the reflective grating disperses the light, subdivides the light in units of nm and projects the light to a reflector II, the subdivided light is projected to a digital micromirror through the reflector II, the digital micromirror receives the subdivided light and projects the subdivided light to each pixel of the digital micromirror, the modulation of the color temperature of the incident light is realized by controlling the switch of each pixel point of the digital micromirror, the modulated light is projected to a converging lens, the converging lens projects the light to an integrating sphere, the light is fully mixed and homogenized by the integrating sphere and then is emitted, and the light is sequentially projected to a TIR total internal reflection free-form surface lens, a collimating lens I and a collimating lens II and is output in the form of a collimated light beam.
In summary, the present invention mainly comprises a xenon lamp fiber light source, a slit, a reflector assembly, a reflective grating, a digital micromirror, a converging lens, an integrating sphere, a TIR total internal reflection free-form surface lens and a collimating lens assembly. The collimation output type color temperature adjustable light source adopts a modular design, is simple in composition, reliable in performance, low in manufacturing cost and convenient to maintain, can meet the illumination requirements of high simulation precision, continuous adjustment of color temperature and collimated light emergence, and expands the application range of the color temperature adjustable light source.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a collimated output type color temperature adjustable light source according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It should be noted that in the drawings or the specification, similar or identical elements are provided with the same reference signs.
Fig. 1 is a schematic diagram of an overall structure of a collimated output type color temperature adjustable light source according to an embodiment of the present invention.
The device consists of a xenon lamp fiber light source, a slit, a reflector component, a reflective grating, a digital micromirror, a converging lens, an integrating sphere, a TIR total internal reflection free-form surface lens and a collimating lens component.
The reflecting mirror assembly comprises a reflecting mirror I and a reflecting mirror II, wherein the reflecting mirror I is arranged above the reflecting grating, and the reflecting mirror II is arranged below the reflecting grating; the collimating lens component comprises a collimating lens I and a collimating lens II which are both arranged behind the integrating sphere.
The xenon lamp optical fiber light source is arranged in front of the slit, the slit is arranged in front of the reflector I, the reflector I is arranged in front of the reflection grating, the reflection grating is arranged in front of the reflector II, the reflector II is arranged in front of the digital micromirror, the digital micromirror is arranged in front of the converging lens, the converging lens is arranged in front of the integrating sphere, the integrating sphere is arranged in front of the TIR total internal reflection free-form surface lens, the TIR total internal reflection free-form surface lens is arranged in front of the collimating lens I, the collimating lens I is arranged in front of the collimating lens II, and the collimating lens II is an outlet of the collimation output type color temperature adjustable light source.
A collimated output color temperature adjustable light source as described above, wherein,
the xenon lamp optical fiber light source is used for emitting light rays with the wavelength range covering 300nm-2500 nm;
the slit is used for guiding light rays emitted by the xenon lamp optical fiber light source into the reflector I;
the reflector I is used for modulating incident light and deflecting a light path to enable the incident light to be projected to the reflective grating;
the reflection-type grating is used for carrying out dispersion treatment on incident light, subdividing the light by taking nm as a unit and projecting the light to the reflector II;
the reflector II is used for shaping the light after dispersion treatment and projecting the light to the digital micromirror;
the digital micromirror is used for receiving the subdivided light rays and projecting the subdivided light rays to each pixel of the digital micromirror, the pixel resolution is 1920 × 1080, the modulation of the color temperature of the incident light rays is realized by controlling the switch of each pixel point of the digital micromirror, and the modulated light rays are projected to the convergent lens;
the converging lens is used for converging the modulated light and projecting the converged light to the integrating sphere;
the integrating sphere is used for mixing and homogenizing the light after dispersion and modulation treatment and emitting the light;
the TIR total internal reflection free-form surface lens is used for receiving light rays emitted by the integrating sphere and is matched with the collimating lens I and the collimating lens II to realize collimation output of the light rays.
A collimated output color temperature adjustable light source as described above, wherein,
the xenon lamp optical fiber light source emits light with the wavelength range covering 300nm-2000nm, the light is acted into light with good coherence and is projected to a reflector I after the action of a slit, the light is projected to a reflection grating through the reflector I, the reflection grating divides the light by nm after the dispersion treatment of the light and projects the light to a reflector II, the divided light is projected to a digital micromirror through the reflector II, the digital micromirror receives the divided light and projects the divided light to each pixel of the digital micromirror, the modulation of the color temperature of the incident light is realized by controlling the switch of each pixel point of the digital micromirror, the modulated light is projected to a convergent lens, the convergent lens projects the light to an integrating sphere, the integrating sphere fully mixes and homogenizes the light and then emits the light to a TIR total internal reflection free curved surface lens, an collimating lens I and a collimating lens II in sequence, and output in the form of collimated light beams, and realize 3000K-9000K color temperature simulation, and the simulation precision is better than 5%.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. A collimated output type light source with adjustable color temperature is characterized in that,
the device consists of a xenon lamp optical fiber light source, a slit, a reflector component, a reflective grating, a digital micromirror, a converging lens, an integrating sphere, a TIR total internal reflection free-form surface lens and a collimating lens component;
the reflecting mirror assembly comprises a reflecting mirror I and a reflecting mirror II, wherein the reflecting mirror I is arranged above the reflecting grating, and the reflecting mirror II is arranged below the reflecting grating; the collimating lens component comprises a collimating lens I and a collimating lens II, and the collimating lens I and the collimating lens II are arranged behind the integrating sphere;
the xenon lamp optical fiber light source is arranged in front of the slit, the slit is arranged in front of the reflector I, the reflector I is arranged in front of the reflection grating, the reflection grating is arranged in front of the reflector II, the reflector II is arranged in front of the digital micromirror, the digital micromirror is arranged in front of the converging lens, the converging lens is arranged in front of the integrating sphere, the integrating sphere is arranged in front of the TIR total internal reflection free-form surface lens, the TIR total internal reflection free-form surface lens is arranged in front of the collimating lens I, the collimating lens I is arranged in front of the collimating lens II, and the collimating lens II is an outlet of the collimation output type color temperature adjustable light source.
2. The collimated output color temperature tunable light source of claim 1,
the xenon lamp optical fiber light source is used for emitting light rays with the wavelength range covering 300nm-2000 nm;
the slit is used for guiding light rays emitted by the xenon lamp optical fiber light source into the reflector I;
the reflector I is used for modulating incident light and deflecting a light path to enable the incident light to be projected to the reflective grating;
the reflection-type grating is used for carrying out dispersion treatment on incident light, subdividing the light by taking nm as a unit and projecting the light to the reflector II;
the reflector II is used for shaping the light after dispersion treatment and projecting the light to the digital micromirror;
the digital micromirror is used for receiving the subdivided light rays and projecting the subdivided light rays to each pixel of the digital micromirror, the modulation of the color temperature of the incident light rays is realized by controlling the switch of each pixel point of the digital micromirror, and the modulated light rays are projected to the convergent lens;
the converging lens is used for converging the modulated light and projecting the converged light to the integrating sphere;
the integrating sphere is used for mixing and homogenizing the light after dispersion and modulation treatment and emitting the light;
the TIR total internal reflection free-form surface lens is used for receiving light rays emitted by the integrating sphere and is matched with the collimating lens I and the collimating lens II to realize collimation output of the light rays.
3. The collimated output color temperature tunable light source of claim 1,
light emitted by a xenon lamp optical fiber light source is projected to a reflector I after the action of a slit, the light is projected to a reflective grating through the reflector I, the reflective grating disperses the light, subdivides the light in units of nm and projects the light to a reflector II, the subdivided light is projected to a digital micromirror through the reflector II, the digital micromirror receives the subdivided light and projects the subdivided light to each pixel of the digital micromirror, the modulation of the color temperature of the incident light is realized by controlling the switch of each pixel point of the digital micromirror, the modulated light is projected to a converging lens, the converging lens projects the light to an integrating sphere, the light is fully mixed and homogenized by the integrating sphere and then is emitted, and the light is sequentially projected to a TIR total internal reflection free-form surface lens, a collimating lens I and a collimating lens II and is output in the form of a collimated light beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911298593.3A CN111350960A (en) | 2020-05-21 | 2020-05-21 | Collimation output type color temperature adjustable light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911298593.3A CN111350960A (en) | 2020-05-21 | 2020-05-21 | Collimation output type color temperature adjustable light source |
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| CN111350960A true CN111350960A (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911298593.3A Pending CN111350960A (en) | 2020-05-21 | 2020-05-21 | Collimation output type color temperature adjustable light source |
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|---|---|
| CN (1) | CN111350960A (en) |
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2020
- 2020-05-21 CN CN201911298593.3A patent/CN111350960A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 王文鹏: "基于DMD的星模拟器光谱模拟技术研究", 《中国优秀硕士学位论文数据库》 * |
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