TWI792227B - Optical engine module and projector - Google Patents

Abstract

An optical engine module includes a first light source module, a second light source module, and a controller. The first light source module includes a plurality of solid state light emitters. The solid state light emitters are configured to emit different color lights. The second light source module is configured to emit fluorescent light. The controller is configured to: driving the first light source module in a first light emitting mode, in which the color lights are configured to be mixed to produce a first white light; and driving the first light source module and the second light source module in a second light emitting mode, in which the color lights and the fluorescent light are configured to be mixed to produce a second white light.

Description

Optical-mechanical module and projector

This disclosure relates to an optical-mechanical module and a projector.

In recent years, optical projectors have been used in many fields, and the range of applications is expanding day by day, from consumer products to high-tech equipment. Various optical projectors are also widely used in schools, homes and commercial occasions to amplify the display pattern provided by the signal source and display it on the projection screen.

For the current projectors that use fluorescent light to obtain various colors, two situations are usually encountered after the fluorescent light passes through the color filter. The first situation is low light utilization. If the color filter in the future must conform to the specification of more pure color, the light utilization efficiency will be lower. The second is that lower light utilization means more light will be converted into waste heat, which also reduces the efficiency of the fluorescent color wheel in the projector.

Therefore, how to propose an optical-mechanical module and a projector that can solve the above-mentioned problems has become one of the current important research and development topics.

In view of this, one purpose of the present disclosure is to provide an optical-mechanical module and a projector that can solve the above-mentioned problems.

In order to achieve the above object, according to an embodiment of the present disclosure, an optical-mechanical module includes a first light source module, a second light source module, and a controller. The first light source module includes a plurality of solid-state light emitters. The solid state light emitters are individually configured to produce different colors of light. The second light source module is configured to generate fluorescent light. The controller is configured to: drive the first light source module in the first lighting mode, wherein the color light is configured to mix light to produce the first white light; and drive the first light source module and the second light source module in the second lighting mode, wherein Chromatic light and fluorescent light are configured to mix light to produce a second white light.

In one or more embodiments of the present disclosure, the optomechanical module further includes a band-pass filter element. At least two of the solid state light emitters and the second light source module are optically coupled to the bandpass filter element.

In one or more embodiments of the present disclosure, the solid-state light emitters are laser diodes, which have different emission spectra. A bandpass filter element has a reflection spectrum. The reflection spectrum is located between adjacent two in the emission spectrum of the solid state light emitter.

In one or more embodiments of the present disclosure, the emission spectrum of the fluorescent light covers the reflection spectrum.

In one or more embodiments of the present disclosure, at least two of the aforementioned solid-state light emitters include a green laser diode and a red laser diode.

In one or more embodiments of the present disclosure, at least two of the aforementioned solid-state light emitters include a green laser diode, a red laser diode and a blue laser diode.

In one or more embodiments of the present disclosure, the second light source module includes a light emitting unit and a wavelength conversion material. The wavelength conversion material is configured to convert the light emitted by the light emitting unit into fluorescent light.

In one or more embodiments of the present disclosure, one of the light emitting unit and the solid state light emitter is a blue laser diode.

In one or more implementations of the present disclosure, the second light source module uses one of the solid-state light emitters as a light emitting unit.

In one or more embodiments of the present disclosure, the second light source module further includes a substrate. The wavelength converting material is disposed on the substrate.

In one or more embodiments of the present disclosure, the substrate is a reflective substrate.

In one or more embodiments of the present disclosure, the optomechanical module further includes a dichroic mirror. The dichroic mirror is located between the light emitting unit and the substrate. The dichroic mirror is configured to allow the light emitted by the light emitting unit to pass through, and configured to reflect fluorescent light.

In one or more embodiments of the present disclosure, the substrate is a transmissive substrate.

In one or more embodiments of the present disclosure, the optomechanical module further includes a reflector. The wavelength conversion material and the substrate are located between the light emitting unit and the reflector. The reflector is configured to reflect fluorescent light.

In one or more embodiments of the present disclosure, the substrate has a notch. The notch is configured for the light emitted by the light emitting unit to pass through.

In order to achieve the above object, according to an embodiment of the present disclosure, a projector includes the aforementioned optical-mechanical module and a projection module. The projection module is configured to: in the first lighting mode, sequentially process the colored light based on the first timing; and in the second lighting mode, sequentially process the colored light and the fluorescent light based on the second timing.

In one or more embodiments of the present disclosure, the projector further includes a homogenizer. The first light source module and the second light source module are respectively and independently optically coupled to the homogenizer.

To sum up, in the optical-mechanical module and projector disclosed in this disclosure, the first light source module capable of producing different colored lights and the second light source module capable of producing fluorescent light can correspond to the first light source module through the control of the controller. The first light emitting mode and the second light emitting mode are respectively mixed to emit the first white light and the second white light. In this way, the light-mechanical module and the projector disclosed in the present disclosure can obtain respective maximum benefits for various light-emitting modes.

The above description is only used to explain the problems to be solved by the present disclosure, the technical means to solve the problems, and the effects thereof, etc. The specific details of the present disclosure will be introduced in detail in the following implementation methods and related drawings.

The following will disclose multiple implementations of the present disclosure with diagrams, and for the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present disclosure. That is to say, in some embodiments of the present disclosure, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some well-known structures and components will be shown in a simple and schematic manner in the drawings.

Please refer to pictures 1 to 3. FIG. 1 is a perspective view illustrating a projector 100 according to an embodiment of the present disclosure. FIG. 2 is a schematic diagram illustrating an optomechanical module 110 and a homogenizer 120 according to an embodiment of the present disclosure. FIG. 3 shows the functional blocks of components included in the optomechanical module 110 according to an embodiment of the present disclosure. As shown in FIGS. 1 to 3 , in this embodiment, the projector 100 includes an optical-mechanical module 110 , a homogenizer 120 , a projection module 130 and a casing 140 . The optical machine module 110 , the homogenizer 120 and the projection module 130 are disposed in the casing 140 . The optical machine module 110 includes a first light source module 111 , a second light source module 112 and a controller 113 . The first light source module 111 includes a plurality of solid state light emitters 111a, 111b, 111c. The solid state light emitters 111a are respectively configured to generate light of different colors. For example, solid state light emitter 111a is configured to generate red light R, solid state light emitter 111b is configured to generate green light G, and solid state light emitter 111c is configured to generate blue light B. The second light source module 112 is configured to generate fluorescent light P. The controller 113 is configured to: drive the first light source module 111 in the first light emitting mode, wherein the color lights (ie red light R, green light G and blue light B) are configured to mix light to produce first white light; and in the second light emitting mode The first light source module 111 and the second light source module 112 are driven, wherein the color light and fluorescent light P are configured to mix light to produce a second white light.

Please refer to FIG. 4 , which is a schematic diagram illustrating the operation of the projector 100 in the first light-emitting mode according to an embodiment of the present disclosure. As shown in FIG. 4 , when the projector 100 operates in the first light-emitting mode, the controller 113 of the light-mechanical module 110 only drives the first light source module 111 to emit red light R, green light G and blue light B sequentially. The red light R, green light G and blue light B reach the projection module 130 through the homogenizer 120 . The homogenizer 120 is configured to homogenize the red light R, the green light G and the blue light B. The projection module 130 is configured in the first light emitting mode, and sequentially processes the red light R, the green light G and the blue light B based on the first timing. Specifically, the projection module 130 is configured in the first lighting mode, and sequentially projects the red light R, the green light G, and the blue light B to predetermined positions respectively.

Please refer to FIG. 5 , which is a schematic diagram illustrating the operation of the projector 100 in the second light-emitting mode according to an embodiment of the present disclosure. As shown in FIG. 5, when the projector 100 operates in the second light-emitting mode, the controller 113 of the optical-mechanical module 110 will drive the first light source module 111 and the second light source module 112 to sequentially emit red light R, Green light G, blue light B and fluorescent P. The homogenizer 120 is configured to homogenize the red light R, the green light G, the blue light B and the fluorescent light P. The projection module 130 is configured in the second light emitting mode, and sequentially processes the red light R, the green light G, the blue light B and the fluorescent light P based on the second sequence. Specifically, the projection module 130 is configured in the second light emitting mode, and sequentially projects the red light R, the green light G, the blue light B and the fluorescent light P to predetermined positions respectively. From the above description, it can be seen that when the projector 100 operates in the first light emitting mode, it can display high chromaticity because it uses the red light R, the green light G and the blue light B to mix light. When the projector 100 operates in the second light-emitting mode, since the fluorescent light P is additionally used for light mixing, not only the brightness but also the efficiency can be increased (details will be described in conjunction with Table 1 and Table 2 below).

In some embodiments, as shown in FIG. 2 , the homogenizer 120 includes a diffuser 121 and an integrating column 122 . The aforementioned red light R, green light G, blue light B and fluorescent light P sequentially pass through the diffusion sheet 121 and the integrating column 122 to reach the projection module 130 .

In some embodiments, the projection module 130 includes a digital micromirror device (Digital Micromirror Device, DMD), but the disclosure is not limited thereto.

In some embodiments, the solid-state light emitters 111a, 111b, and 111c are red R laser diodes, green G laser diodes, and blue B laser diodes, respectively, but this disclosure does not rely on this limit.

As shown in FIG. 2 , in some embodiments, the second light source module 112 includes a light emitting unit 112a, a wavelength conversion material 112b and a substrate 112c. The wavelength conversion material 112b is disposed on the substrate 112c. The wavelength conversion material 112b is configured to convert the light emitted by the light emitting unit 112a into fluorescent light P. For example, the light emitting unit 112a is configured to emit blue light B. As shown in FIG. The wavelength converting material 112b is configured to convert blue light B into yellow fluorescent P.

In some embodiments, the light emitting unit 112a is a blue laser diode, and the wavelength converting material 112b includes YAG phosphor or nitride phosphor, but the present disclosure is not limited thereto.

As shown in FIG. 2 , in this embodiment, the optical-mechanical module 110 further includes a dichroic mirror 114 and a reflector 115 . The dichroic mirror 114 is located between the light emitting unit 112a of the second light source module 112 and the wavelength conversion material 112b, and the wavelength conversion material 112b is located between the dichroic mirror 114 and the substrate 112c. In some embodiments, as shown in FIG. 2 , the dichroic mirror 114 is composed of a glass substrate and a dichroic layer disposed on its surface. The dichroic mirror 114 is configured to allow the light emitted by the light emitting unit 112 a to pass through, so that the light reaches the wavelength conversion material 112 b and is converted into fluorescent light P by the light. In this embodiment, the substrate 112c is a reflective substrate, so the fluorescent light P will be reflected back to the dichroic mirror 114 . The dichroic mirror 114 is also configured to reflect the fluorescent light P to the reflector 115 . The reflector 115 is configured to reflect the fluorescent light P to the homogenizer 120 again. With the aforementioned optical configuration, the optical path design can be made compact, so as to effectively reduce the space occupied by the optical engine module 110 in the projector 100 .

In some embodiments, the reflector 115 is a mirror or another dichroic mirror, but the present disclosure is not limited thereto.

In some embodiments, the substrate 112c may be a rotating substrate or a fixed substrate.

With the aforementioned optical configuration, the optical-mechanical module 110 of this embodiment and the projector 100 using it can obtain respective maximum benefits for various light-emitting modes. The following description will be made in conjunction with the experimental data in Table 1 and Table 2 below.

The following table 1 shows the data detected in the experiment of the optical mechanical module A using a set of first light source modules 111 and the optical mechanical module B using two sets of first light source modules 111: Table 1 Optomechanical Module A Optomechanical module B Total brightness (lm) 7770 15540 Proportion of fluorescent brightness (%) 0 0 efficiency(%) 100 100

Table 2 below shows the data detected in the experiment of the optomechanical module 110 using a set of first light source modules 111 and a set of second light source modules 112 in this embodiment: Table 2 The optical machine module 110 of this embodiment Total brightness (lm) 8016 10337 13571 15969 19914 Proportion of fluorescent brightness (%) 52 41 59 50 59 efficiency(%) 106.7 105.6 105.7 105.7 105.6

It should be noted that the efficiencies of the optical-mechanical module 110 in each embodiment in Table 2 are converted based on the efficiencies of the optical-mechanical module A and the optical-mechanical module B in Table 1, where Table 1 and Table 1 The efficiency in the second refers to the efficiency of the light source to convert the consumed electrical energy into light, usually expressed by the ratio of luminous flux (lm/lumen) to power consumption in watts (Watt). From Table 1 and Table 2 above, it can be seen that the optomechanical module 110 of this embodiment (i.e. using a set of first light source modules 111 and a set of second light source modules 112) is compared with only one or two sets of second light source modules. The light engine modules A and B of a light source module 111 have better efficiency performance (about 5 to 6% higher) in the range of brightness from about 7000lm to about 20000lm. In addition, it can be seen from the above Tables 1 and 2 that the fluorescent brightness of the optomechanical module 110 in this embodiment accounts for about 40% to about 70%, and the total brightness can be increased by about 25% to about 25% compared with the optomechanical module B. About 30%.

Please refer to FIG. 6 , which is a schematic diagram illustrating an optical-mechanical module 210 and a homogenizer 120 according to another embodiment of the present disclosure. As shown in Figure 6, in this embodiment, the optomechanical module 210 includes a first light source module 111, a second light source module 212, and reflectors 214, 215, wherein the first light source module 111 is the same as the second light source module The implementation manner shown in the figure is therefore not described in detail here, and reference may be made to the aforementioned related introductions. The second light source module 212 includes a light-emitting unit 112a, a wavelength conversion material 112b, and a substrate 212c. The light-emitting unit 112a and the wavelength conversion material 112b are the same as those shown in FIG. introduce. The difference between this embodiment and the embodiment shown in FIG. 2 is that the substrate 212c of the second light source module 212 in this embodiment is a transmissive substrate, and the wavelength conversion material 112b and the substrate 212c are located between the light emitting unit 112a and the between the reflectors 214. Accordingly, the substrate 212c is configured to allow the light emitted by the light emitting unit 112a to pass through, so that the light reaches the wavelength conversion material 112b and is converted into fluorescent light P by the light. The fluorescent light P is then reflected by the reflectors 214 and 215 in sequence and reaches the homogenizer 120 . With this optical configuration, the optical path design can also be made compact, so as to effectively reduce the space occupied by the optical engine module 210 in the projector 100 .

In some implementations, at least one of the reflectors 214, 215 is a mirror or a dichroic mirror, but the present disclosure is not limited thereto.

Please refer to FIG. 7 , which is a schematic diagram illustrating an optical-mechanical module 310 and a homogenizer 120 according to another embodiment of the present disclosure. As shown in Figure 7, in this embodiment, the optomechanical module 310 includes a first light source module 111, a second light source module 112, a dichroic mirror 114 and a bandpass filter element 315, wherein the first light source module 111. The second light source module 112 and the dichroic mirror 114 are the same as the implementation shown in FIG. 2 , so details are not repeated here, and reference can be made to the aforementioned related introductions. The difference between this embodiment and the embodiment shown in FIG. 2 is that the reflector 115 in FIG. 2 is replaced by a band-pass filter element 315 in this embodiment. In addition, compared with the first light source module 111 and the second light source module 112 that are independently optically coupled to the homogenizer 120 in the embodiment shown in FIG. 2 , the first light source module 111 in this embodiment Both are optically coupled to the bandpass filter element 315 with the second light source module 112 , and are optically coupled to the homogenizer 120 through the bandpass filter element 315 . With this optical configuration, the optical path design can be made more compact, so as to further reduce the space occupied by the optical engine module 310 in the projector 100 .

Please refer to Figure 8 and Figure 9. FIG. 8 is a graph showing the wavelength-reflectivity curve of the bandpass filter element 315 . FIG. 9 is a graph showing the wavelength-intensity curve of the fluorescent light P' reflected by the band-pass filter element 315. As shown in FIG. 8, the solid line represents the wavelength-reflectance curve of the bandpass filter element 315, and the dotted line represents the wavelength-intensity curve of the fluorescent light P converted by the wavelength conversion material 112b. Therefore, after the fluorescent light P reaches the band-pass filter element 315, the fluorescent light P' reflected by the band-pass filter element 315 can obtain the wavelength-intensity curve as shown in FIG. 9 . In other words, the emission spectrum of the phosphor P covers the reflection spectrum of the band-pass filter element 315 , so the phosphor P partially passes through the band-pass filter element 315 and is partially reflected by the band-pass filter element 315 .

Please refer to FIG. 10 , which shows the wavelength-intensity curves of different color lights passing through the band-pass filter element 315 and the fluorescent light P' reflected by the band-pass filter element 315 . According to Fig. 8 and Fig. 10, the wavelength-intensity curves of red light R, green light G and blue light B do not overlap with the wavelength-reflectivity curve of band-pass filter element 315, so the red light R, green light G and blue light The blue light B can pass through the bandpass filter element 315 . Moreover, the wavelength-intensity curves of the red light R, the green light G, and the blue light B do not overlap with the wavelength-intensity curves of the fluorescent light P' reflected by the band-pass filter element 315. In other words, the red light R, the green light G and the blue light B have different emission spectra, and the reflection spectrum of the bandpass filter element 315 is located between the emission spectra of the red light R and the green light G. In this way, the fluorescent light P converted by the wavelength conversion material 112b can filter out purer yellow light through the bandpass filter element 315, so as to facilitate the expansion of the light emitted by the red light R, green light G, blue light B and fluorescent light P'. The color gamut of the second white light from the mixed light.

Please refer to FIG. 11 , which is a schematic diagram illustrating an optical-mechanical module 410 and a homogenizer 120 according to another embodiment of the present disclosure. As shown in Figure 11, in this embodiment, the optomechanical module 410 includes a first light source module 111, a second light source module 212, a reflector 214 and a bandpass filter element 315, wherein the first light source module 111 The band-pass filter element 315 is the same as the embodiment shown in FIG. 7 , and the second light source module 212 is the same as the embodiment shown in FIG. 6 , so details are not described here, and the above-mentioned related introductions can be referred to. In short, the substrate 212c of the second light source module 212 in this embodiment is configured to allow the light emitted by the light emitting unit 112a to pass through, so that the light reaches the wavelength conversion material 112b and is converted into fluorescent light P by it. The fluorescent light P is then reflected by the reflector 214 and the band-pass filter element 315 in sequence (and filtered as fluorescent light P') and reaches the homogenizer 120. With this optical configuration, the optical path design can also be made more compact, so as to further reduce the space occupied by the optical engine module 410 in the projector 100 .

Please refer to FIG. 12 , which is a schematic diagram illustrating an optical mechanical module 510 and a homogenizer 120 according to another embodiment of the present disclosure. As shown in Figure 12, in this embodiment, the optomechanical module 510 includes a first light source module 111, a second light source module 112, a dichroic mirror 514, and a bandpass filter element 315, wherein the first light source module The solid-state light emitters 111a, 111b of 111, the light-emitting unit 112a of the second light source module 112, and the band-pass filter element 315 are the same as or similar to the embodiment shown in FIG. introduce. The difference between this embodiment and the embodiment shown in FIG. 7 is that the solid-state light emitter 111c of the first light source module 111 and the light emitting unit 112a of the second light source module 112 of this embodiment are adjacently arranged. And away from the solid-state light emitters 111 a and 111 b of the first light source module 111 . For example, the solid-state light emitter 111c of the first light source module 111 and the light emitting unit 112a of the second light source module 112 can be two adjacent laser diodes arranged in the same light emitter, and the first light source module The solid-state light emitters 111a, 111b of the group 111 can be two adjacent laser diodes disposed in another light emitter.

Another difference between this embodiment and the embodiment shown in FIG. 7 is that a part (for example, the upper half) of the dichroic mirror 514 of this embodiment has a light splitting function. Specifically, this part of the dichroic mirror 514 is configured to allow the light emitted by the light emitting unit 112 a to pass through, and configured to reflect the fluorescent light P converted by the wavelength conversion material 112 b to the band-pass filter element 315 . In addition, another part (for example, the lower half) of the dichroic mirror 514 in this embodiment has no spectroscopic function. Specifically, this part of the dichroic mirror 514 is only configured for the light emitted by the solid-state light emitter 111 c of the first light source module 111 to pass through and reach the homogenizer 120 , and cannot reflect the fluorescent light P. With the aforementioned optical configuration, the optical path design can also be made more compact, so as to further reduce the space occupied by the optical engine module 510 in the projector 100 .

In some embodiments, the dichroic mirror 514 in FIG. 12 can also be replaced with the dichroic mirror 114 in FIG. 7, and the light emitted by the solid-state light emitter 111c of the first light source module 111 can pass through or not Pass through the dichroic mirror 114 and reach the homogenizer 120 .

Please refer to FIG. 13 , which is a schematic diagram illustrating an optical-mechanical module 610 and a homogenizer 120 according to another embodiment of the present disclosure. As shown in FIG. 13, in this embodiment, the optical-mechanical module 610 includes a first light source module 111, a second light source module 212, and a band-pass filter element 315, wherein the first light source module 111 and the band-pass filter The element 315 is the same as the embodiment shown in FIG. 12 , and the second light source module 212 is the same as the embodiment shown in FIG. 6 , so it will not be repeated here, and reference can be made to the aforementioned related introduction. In short, the substrate 212c of the second light source module 212 in this embodiment is configured to allow the light emitted by the light emitting unit 112a to pass through, so that the light reaches the wavelength conversion material 112b and is converted into fluorescent light P by it. The fluorescent light P is then reflected by the reflector 214 and the band-pass filter element 315 in sequence (and filtered as fluorescent light P') and reaches the homogenizer 120. In addition, the light emitted by the solid-state light emitter 111 c directly reaches the homogenizer 120 . With this optical configuration, the optical path design can also be made more compact, so as to further reduce the space occupied by the optical engine module 610 in the projector 100 .

Please refer to Figure 14, Figure 15A and Figure 15B. FIG. 14 is a schematic diagram illustrating an optomechanical module 710 and a homogenizer 120 according to another embodiment of the present disclosure. FIG. 15A is a perspective view showing some components of the second light source module 312 in FIG. 14 . Fig. 15B is another perspective view showing the structure in Fig. 15A. In this embodiment, the optical-mechanical module 710 includes a first light source module 111, a second light source module 312, a dichroic mirror 114, and a band-pass filter element 315, wherein the first light source module 111 and the band-pass filter element 315 It is the same as the implementation shown in FIG. 12 , so it will not be repeated here, and reference can be made to the aforementioned related introductions. The difference between this embodiment and the embodiment shown in FIG. 2 is that the second light source module 312 of this embodiment uses the solid-state light emitter 111c of the first light source module 111 as a light emitting unit. Another difference between this embodiment and the embodiment shown in FIG. 2 is that the substrate 312c of the second light source module 312 of this embodiment has a notch H, and the substrate 312c is a rotary substrate. In addition, the gap H can be filled with a light-transmitting material such as glass, so as to avoid noise caused by airflow disturbance when the substrate 312c rotates. In practical applications, the substrate 312c may have more than one notch H. When the substrate 312c is rotated so that the notch H moves to the light path of the light emitted by the solid-state light emitter 111c, the light will directly pass through the notch H and reach the homogenizer 120 . When the substrate 312c rotates so that the notch H moves away from the optical path of the light emitted by the solid-state light emitter 111c, the light will be converted into fluorescent light P by the wavelength conversion material 112b first, and then by the substrate 312c, the dichroic mirror 114 and Bandpass filter element 315 reflects to homogenizer 120 . With this optical configuration, not only can the space occupied by the optical-mechanical module 710 in the projector 100 be further reduced, but also the manufacturing costs of the optical-mechanical module 710 and the projector 100 can be effectively reduced.

From the above detailed description of the specific implementation of the present disclosure, it can be clearly seen that in the optical-mechanical module and the projector of the present disclosure, the first light source module that can generate different colors of light and the second light source module that can generate fluorescent light Through the control of the controller, the light source module can mix and output the first white light and the second white light respectively corresponding to the first light emitting mode and the second light emitting mode. In this way, the light-mechanical module and the projector disclosed in the present disclosure can obtain respective maximum benefits for various light-emitting modes.

Although the present disclosure has been disclosed above in terms of implementation, it is not intended to limit this disclosure. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of this disclosure. Therefore, the protection of this disclosure The scope shall be defined by the scope of the appended patent application.

100:Projector 110,210,310,410,510,610,710: Optical-mechanical modules 111: The first light source module 111a, 111b, 111c: solid state light emitters 112,212,312: Second light source module 112a: light emitting unit 112b: wavelength conversion material 112c, 212c, 312c: substrate 113: Controller 114,514: dichroic mirror 115,214,215: reflector 120:Equalizer 121: Diffuser 122: integral column 130: Projection module 140: shell 315: Bandpass filter element R: red light G: green light B: Blu-ray P: fluorescent H: notch

In order to make the above and other purposes, features, advantages and embodiments of the present disclosure more comprehensible, the accompanying drawings are described as follows: FIG. 1 is a perspective view illustrating a projector according to an embodiment of the present disclosure. FIG. 2 is a schematic diagram illustrating an optomechanical module and a homogenizer according to an embodiment of the present disclosure. FIG. 3 shows the functional blocks of components included in the optomechanical module according to an embodiment of the present disclosure. FIG. 4 is a schematic diagram showing the operation of the projector in the first light-emitting mode according to an embodiment of the present disclosure. FIG. 5 is a schematic diagram showing the operation of the projector in the second light-emitting mode according to an embodiment of the present disclosure. FIG. 6 is a schematic diagram illustrating an optomechanical module and a homogenizer according to another embodiment of the present disclosure. FIG. 7 is a schematic diagram illustrating an optomechanical module and a homogenizer according to another embodiment of the present disclosure. FIG. 8 is a graph showing the wavelength-reflectance curve of the bandpass filter element. Fig. 9 is a graph showing the wavelength-intensity curve of the fluorescent light reflected by the band-pass filter element. Fig. 10 is a graph showing wavelength-intensity curves of light of different colors passing through the band-pass filter element and fluorescent light reflected by the band-pass filter element. FIG. 11 is a schematic diagram illustrating an optomechanical module and a homogenizer according to another embodiment of the present disclosure. FIG. 12 is a schematic diagram illustrating an optomechanical module and a homogenizer according to another embodiment of the present disclosure. FIG. 13 is a schematic diagram illustrating an optomechanical module and a homogenizer according to another embodiment of the present disclosure. FIG. 14 is a schematic diagram illustrating an optomechanical module and a homogenizer according to another embodiment of the present disclosure. FIG. 15A is a perspective view illustrating some components of the second light source module in FIG. 14 . Fig. 15B is another perspective view showing the structure in Fig. 15A.

Domestic deposit information (please note in order of depositor, date, and number) none Overseas storage information (please note in order of storage country, institution, date, and number) none

110: Optomechanical module

111: The first light source module

111a, 111b, 111c: solid state light emitters

112: Second light source module

112a: light emitting unit

112b: wavelength conversion material

112c: Substrate

114: dichroic mirror

115: reflector

120:Equalizer

121: Diffuser

122: integral column

R: red light

G: green light

B: Blu-ray

P: fluorescent

Claims (16)

An optical-mechanical module, comprising: a first light source module, including a plurality of solid-state light emitters, and the solid-state light emitters are respectively configured to generate different colors of light; a second light source module, configured to generate a fluorescent light; A controller configured to: drive the first light source module in a first light emitting mode, wherein the color lights are configured to mix light to produce a first white light; and drive the first light source module in a second light emitting mode Set with the second light source module, wherein the color lights and the fluorescent light are configured to mix light into a second white light; and a band-pass filter element, wherein at least two of the solid-state light emitters are compatible with the second light source The module is optically coupled to the bandpass filter element. The optical machine module as described in claim 1, wherein the solid-state light emitters are laser diodes and have different light emission spectra, the bandpass filter element has a reflection spectrum, and the reflection spectrum is located at the Between the adjacent two in the emission spectrum. The optomechanical module as claimed in claim 2, wherein the emission spectrum of the fluorescent light covers the reflection spectrum. The optomechanical module as claimed in claim 1, wherein at least two of the solid-state light emitters comprise a green laser diode and A red laser diode. The optical machine module as claimed in claim 1, wherein at least two of the solid-state light emitters include a green laser diode, a red laser diode and a blue laser diode . The optical engine module as claimed in claim 1, wherein the second light source module includes: a light emitting unit; and a wavelength conversion material configured to convert the light emitted by the light emitting unit into the fluorescent light. The optical engine module as claimed in item 6, wherein the light-emitting unit and one of the solid-state light emitters are blue laser diodes. The optical engine module as claimed in claim 6, wherein the second light source module uses one of the solid-state light emitters as the light emitting unit. The optical engine module as claimed in claim 6, wherein the second light source module further includes a substrate, and the wavelength conversion material is disposed on the substrate. The optical machine module as described in claim item 9, wherein the base The plate is a reflective substrate. The optical engine module according to claim 10, further comprising: a dichroic mirror located between the light-emitting unit and the substrate, wherein the dichroic mirror is configured to allow the light emitted by the light-emitting unit to pass through, and is configured to reflect the fluorescent light. The optical machine module as claimed in claim 9, wherein the substrate is a transmissive substrate. The optomechanical module according to claim 12, further comprising: a reflector, wherein the wavelength conversion material and the substrate are located between the light emitting unit and the reflector, and the reflector is configured to reflect the fluorescent light. The optical engine module as claimed in claim 9, wherein the substrate has a notch configured for the light emitted by the light emitting unit to pass through. A projector, comprising: an optical engine module as described in any one of claims 1 to 14; and a projection module configured to: in the first light-emitting mode, sequentially process the shades; and In the second light emitting mode, the color lights and the fluorescent light are sequentially processed based on a second time sequence. The projector as claimed in claim 15 further comprises a homogenizer, wherein the first light source module and the second light source module are respectively and independently optically coupled to the homogenizer.

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