TWI437268B - Illumination assembly and projector device - Google Patents

Description

Lighting assembly and projection device

The present invention relates to a lighting assembly and a projection apparatus, and more particularly to an illumination assembly and projection apparatus having an integration module having three channels.

In recent years, due to the development of the electronics industry towards a light and short direction, micro-projection devices are bound to become the mainstream of the future market.

Please refer to "Figure 1" for a schematic diagram of the architecture of a digital light processing projector. A Digital Light Processing Projector (DLP Projector) 90 includes a light source module 92, an integrating unit 94, a lens 96, a reflecting element 31, a lens group 32, a total reflection 稜鏡 (TIR Prism) 34, and a lens group 36. Digital Light Processing Panel (DLP Panel) 38. The light source module 92 emits a first light 99a, a second light 99b and a third light 99c. The first light 99a may be, but not limited to, red light, the second light 99b is but not limited to green light, and the third light 99c is but not Limited to blue light. The light source module 92 outputs the first light 99a, the second light 99b and the third light 99c at different time points through the control unit (not drawn), and the first light 99a, the second light 99b and the third light 99c are transmitted through the integrating unit 94. And being output to the lens 96, the lens 96 converges and transmits a uniform first ray 99a, a second ray 99b and a third ray 99c to the reflective element 31. The reflective element 31 will be the first ray 99a, second from the lens 96. The light 99b and the third light 99c reflect, and the reflected first light 99a, the second light 99b and the third light 99c pass through the lens group 32, the total reflection 稜鏡 (TIR Prism) 34, the digital light processing panel 38 and the lens Group 36, and the picture 901 is projected.

In order to increase the total lumens required by the projection device and thereby increase the brightness of the projection, a light source module in which the projection devices are arranged in an array by the light-emitting diodes has been proposed. However, when the above light source module is used, on the one hand, it is necessary to increase the area of the receiving unit to receive and output light, and on the other hand, a plurality of collecting elements are added to concentrate the light output by the integrating unit onto the digital light processing panel. Due to the limited size of the micro-projection device, the above-mentioned light source module is not easily used in a micro-projection device.

In view of the above problems, the present invention provides a lighting assembly and a projection device with a multi-light source module and a multi-channel design to enhance the overall output brightness of the illumination assembly and the projection device.

The illumination assembly according to the present invention comprises: a three-light source module and an integration module. The three light source modules respectively output a first light, a second light and a third light, and the first light, the second light and the third light have different wavelengths. The integration module includes a first channel, a second channel, a third channel, a first filter unit and a second filter unit. The first channel includes a first output end face and the first output end face is coupled to the second channel, the third channel includes a third output end face and the third output end face is coupled to the second channel. The first filter unit is disposed between the first output end surface and the second channel, and reflects the second light and the third light and penetrates the first light. The second filter unit is disposed between the third output end surface and the second channel, and reflects the first light and the second light and penetrates the third light.

The second light, the first light passing through the first channel and the first filter unit, and the third light passing through the third channel and the second filter unit respectively pass through the second channel to cause the integral module to output the first light. Second light and third light.

A projection device according to the present invention includes: a lighting assembly, a lens module and a panel. The lighting component comprises: a three light source module and an integral module. The three light source modules respectively output a first light, a second light and a third light, and the first light, the second light and the third light have different wavelengths. The integration module includes a first channel, a second channel, a third channel, a first filter unit and a second filter unit. The first channel includes a first output end face and the first output end face is coupled to the second channel, the third channel includes a third output end face and the third output end face is coupled to the second channel. The first filter unit is disposed between the first output end surface and the second channel, and reflects the second light and the third light and penetrates the first light. The second filter unit is disposed between the third output end surface and the second channel, and reflects the first light and the second light and penetrates the third light.

The second light, the first light passing through the first channel and the first filter unit, and the third light passing through the third channel and the second filter unit respectively pass through the second channel to cause the integral module to output the first light. Second light and third light. The lens module is configured to converge the first light, the second light, and the third light from the integral module, and the panel receives the first light, the second light, and the third light passing through the lens module to project a picture.

According to the illumination assembly and the projection device disclosed in the present invention, the illumination module can output uniform and high-intensity first light and second light by designing the integration module. Line with third light. The design of the light combining module can increase the relative light output rate of the first light, the second light and the third light through the second output end surface on the one hand, and increase the selection range of the first angle and the second angle on the other hand. . Furthermore, according to the illumination assembly and the projection device disclosed in the present invention, the integration module and the light combining module having the first channel, the second channel and the third channel can be disposed under a limited volume to enhance the illumination component and the projection device. Output brightness.

Please refer to FIG. 2A, which is a schematic structural view of a first embodiment of a projection apparatus according to the present invention. In the present embodiment, the projection device 100 includes a lighting assembly 102, a lens module, a reflective element 41, a lens group 42, a TIR Prism 44, a lens group 46 and a panel 106, and the projection device 100 can be Limited to a digital light processing projector, the lens module can include at least one lens 104, which can be, but is not limited to, a digital light processing panel. The illumination component 102 includes a light source module 108, a light source module 110, a light source module 112, and an integration module 114. The integration module 114 includes a first channel 116, a second channel 118, a third channel 120, and a first filter. Unit 122 and second filter unit 124. The first channel 116, the second channel 118, and the third channel 120 can be, but are not limited to, a solid light guiding column, that is, the first channel 116, the second channel 118, and the third channel 120 can also be hollow light pipes. It can be selected according to actual needs. It should be noted that the first channel 116, the second channel 118 and the third channel 120 have a uniform output of the received light and are not easy to cause energy loss of the received light.

The light source module 108 can output the first light 50, and the light source module 110 can output the second The light source module 112 can output a third light 70. The first light 50, the second light 60 and the third light 70 have different wavelengths. In this embodiment, the first light 50 may be, but not limited to, red light, the second light 60 may be, but not limited to, green light, and the third light 70 may be, but not limited to, blue light, the actual first light 50, the second light The wavelengths of the 60 and the third light 70 can be adjusted according to actual needs. It should be noted that the first light 50, the second light 60 and the third light 70 need to be visible light. In this embodiment, the light source module 108, the light source module 110, and the light source module 112 are spaced apart from the first channel 116, the second channel 118, and the third channel 120, respectively, but this embodiment is not intended to limit the present. In other words, the light source module 108, the light source module 110, and the light source module 112 can also be in contact with the first channel 116, the second channel 118, and the third channel 120, respectively.

In the present embodiment, the first passage 116 includes a first input end surface 125, a first central shaft 126 and a first output end surface 127, and the second passage 118 includes a second input end surface 128, a second central shaft 129 and a second output end surface. 130. The third channel 120 includes a third input end surface 131, a third central axis 132, and a third output end surface 133. The first output end face 127 is coupled to the second passage 118 and the third output end face 133 is coupled to the second passage 118. The first central axis 126 and the second central axis 129 have a first angle θ ₁ , and the second central axis 129 and the third central axis 132 have a second included angle θ ₂ . Wherein, the first angle θ ₁ may be greater than zero degrees and less than or equal to ninety degrees, and the second angle θ ₂ may be greater than zero degrees and less than or equal to ninety degrees. The first filter unit 122 is disposed between the first output end surface 127 and the second channel 118 and reflects the second light 60 and the third light 70 and penetrates the first light 50. The second filter unit 124 is disposed between the third output end surface 133 and the second channel 118 and reflects the first light 50 and the second light 60 and penetrates the third light 70.

The first input end surface 125 is for receiving the first light ray 50, the second input end surface 128 is for receiving the second light ray 60, and the third input end surface 131 is for receiving the third ray 70. The second channel 118 can receive the first light 50 passing through the first channel 116 and the first filter unit 122, the third light 70 passing through the third channel 120 and the second filter unit 124, and the first through the second input end surface 128. The second light 60 is outputted by the second output end surface 130 to the first light 50, the second light 60 and the third light 70 to the lens 104. The lens 104 converges the first ray 50, the second ray 60 and the third ray 70 from the integration module 114 and transmits it to the reflective element 41. The reflective element 41 will be the first ray 50, the second ray 60 and the third from the lens 104. The light 70 reflects and causes the reflected first light 50, the second light 60 and the third light 70 to pass through the lens group 42, the TIR Prism 44, the panel 106 and the lens group 46 to project the image 80. . The lens 104 can be, but not limited to, a convex lens, and the material of the lens 104 can be, but not limited to, plastic or glass.

In this embodiment, the light source module 108 can include, but is not limited to, four first light-emitting units 52 (refer to FIG. 2B), which is a schematic structural view of an embodiment of a light source module according to FIG. 2A. In other words, the light source module 108 can also include two first light emitting units 52. The number of the first light emitting units 52 included in the actual light source module 108 can be adjusted according to actual needs. When the number of the first light-emitting units 52 included in the light source module 108 is larger, the brightness of the first light ray 50 that can be output by the integration module 114 is larger because the area of the second output end surface 130 is constant. The first illuminating unit 52 is configured to emit the first ray 50 (refer to FIG. 2A), that is, the first illuminating unit 52. It can be a red light emitting diode. In this embodiment, the light source module 110 and the light source module 112 can respectively include four second light emitting units (ie, a green light emitting diode) and four third light emitting units (that is, a blue light emitting diode). .

Experiments of different first angles θ ₁ and second angles θ ₂ are performed in accordance with the first embodiment below. Please refer to "3A", "3B", "3C", "3D" and "3E", respectively. The first angle and the second angle are based on "2A". It is a schematic diagram of structures of 15, 20, 25, 30 and 35 degrees. The first light 50, the second light 60, and the third light 70 of the "3A", "3B,""3C,""3D," and "3E" passes through the second output end face 130. Please refer to the following "Table 1" for the relative light output rate.

As can be seen from the results of "Table 1", when the first angle θ ₁ and the second angle θ _{2 are} larger, the relative light output rates of the first light ray 50 and the third light ray 70 passing through the second output end surface 130 are smaller.

Therefore, in order to increase the relative light output rate of the first light 50, the second light 60, and the third light 70 through the second output end surface 130, the projection device 100 may also increase Light module 202. Please refer to FIG. 4, which is a schematic structural view of a second embodiment of a projection apparatus according to the present invention. In this embodiment, the illumination device 102 further includes a light combining module 202, and the light combining module 202 is disposed on the first filter unit 122 and the second filter, in addition to the structure of the projection device 100. The first light 50 passing through the first channel 116 and the first filter unit 122, the third light 70 passing through the third channel 120 and the second filter unit 124, and the first incident on the second channel 118 are received between the cells 124. The second light 60 causes the illumination assembly 102 to output the first light 50, the second light 60, and the third light 70 from the second output end surface 130 of the second channel 118.

The light combining module 202 includes a third filter unit 204 and a fourth filter unit 206. The third filter unit 204 reflects the third light 70 and penetrates the first light 50 and the second light 60. The fourth filter The light unit 206 reflects the first light ray 50 and penetrates the second light ray 60 and the third light ray 70.

Experiments for different first angles θ ₁ and second angles θ ₂ are performed in accordance with the second embodiment below. Please refer to "5A", "5B", "5C", "5D", "5E" and "5F", which are the first according to "4". The angle between the angle and the second angle is 15, 20, 25, 30, 35 and 90 degrees. First light 50, second light 60 and third light 70 of "5A", "5B", "5C", "5D", "5E" and "5F" Please refer to the following "Table 2" for the relative light output rate of the second output end surface 130.

Table 2

As can be seen from the results of "Table 2", when the first angle θ ₁ and the second angle θ _{2 are} larger, the relative light output rates of the first ray 50, the second ray 60, and the third ray 70 passing through the second output end surface 130 are obtained. The smaller. Please refer to "Table 1" and "Table 2". From "Table 1" and "Table 2", the relative light output rates of the first light 50 and the third light 70 through the integration module 114 having the light combining module 202 are known. The relative light output rate of the integrating module 114 of the first light ray 50 and the third light ray 70 passing through the illuminating module 202 is high, and when the integrating module 114 has the light combining module 202, the first angle θ ₁ and the first The two angles θ ₂ may be greater than zero degrees and less than or equal to ninety degrees at the same time. In the above experiment, the magnitude of the first angle θ ₁ may be equal to the magnitude of the second angle θ ₂ , but the experiment is not intended to limit the present invention, that is, the first angle θ ₁ may be equal to the second angle θ _{2 .} The size is different. In other words, the magnitude of the first angle θ _{1 and} the magnitude of the second angle θ ₂ can be adjusted according to actual needs.

The projection device described in the first embodiment and the second embodiment may be a Digital Light Processing Projector (DLP Projector). In addition, the projection device disclosed in the present invention may also be a liquid crystal projector ( Liquid Crystal on Silicon Projector, LCoS Projector), please refer to "figure 6", which is a schematic structural view of a third embodiment of a projection apparatus according to the present invention. In this embodiment, the projection device 300 can include a lighting assembly 102, a lens module, a lens group 48, a polarization splitting unit 302, a panel 304, and a lens assembly 49. The lens module can include at least one lens 104, which is polarized. The light splitting unit 302 is disposed between the panel 304 and the lens 104 such that the first light 50, the second light 60, and the third light 70 that have passed through the polarizing beam splitting unit 302 are incident on the panel 304 (such as the point in FIG. 6). Line), and then the screen 82 is projected. It should be noted that the panel 304 described in this embodiment may be a Liquid Crystal on Silicon Panel (LCoS Panel).

In more detail, when the first light 50, the second light 60, and the third light 70 from the lens 104 pass through the polarization beam splitting unit 302, the first light having the first polarization state may have the first polarization state. The second light and the third light having the first polarization state are incident on the panel 304 (such as the dotted line in "Fig. 6"). The panel 304 converts a first light having a first polarization state, a second light having a first polarization state, and a third light having a first polarization state into a first light having a second polarization state, and having a second polarization state The second light and the third light having the second polarization state (such as the solid line in FIG. 6) are output to the polarization beam splitting unit 302. The polarized beam splitting unit 302 is configured to reflect a first light having a second polarization state, a second light having a second polarization state, and a third light having a second polarization state to the lens group 49, thereby projecting the picture 82. The first polarization state may be, but not limited to, the P polarization state, and the second polarization state may be, but not limited to, the S polarization state, that is, the first polarization state may also be the S polarization state, and the second polarization state may be Not limited to the P polarization state, it can be adjusted according to actual needs.

Please refer to FIG. 7 , which is a schematic structural view of a fourth embodiment of a projection apparatus according to the present invention. In this embodiment, the projection device 400 can include a lighting assembly 102, a lens module, a lens group 48, a polarizing beam splitting unit 402, a panel 404, and a lens group 49. The lens module can include at least one lens 104, wherein the lighting assembly The 102 further includes a light combining module 202. The light combining module 202 includes a third filter unit 204 and a fourth filter unit 206. The third filter unit 204 reflects the third light 70 and penetrates the first light 50 and the second light 60. The fourth filter The light unit 206 reflects the first light ray 50 and penetrates the second light ray 60 and the third light ray 70. The polarizing beam splitting unit 402 is disposed between the panel 404 and the lens 104 such that the first light 50, the second light 60, and the third light 70 that partially pass through the polarizing beam splitting unit 402 (ie, the first light having the first polarization state) Light, a second ray having a first polarization state, and a third ray having a first polarization state are incident on panel 404 to project a picture 82. It should be noted that the panel 404 described in this embodiment may be a Liquid Crystal on Silicon Panel (LCoS Panel).

The first channel 116, the second channel 118 and the third channel 120 can be square or rectangular channels, which can be adjusted according to actual needs.

According to the illumination assembly and the projection device of the present invention, by fixing the area of the second output end surface, increasing the number of the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit respectively included in the three light source modules The integration modules of the one channel, the second channel and the third channel enable the illumination component to output the first light, the second light and the third light with uniform and high brightness. Furthermore, the design of the light combining module can increase the relative light output rate of the first light, the second light and the third light through the second output end surface on the one hand, and increase the first angle and the second angle on the other hand. The range of choices.

While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of patent protection of the invention is subject to the definition of the scope of the patent application attached to this specification.

31, 41. . . Reflective element

32, 42, 48. . . Lens group

34, 44. . . Total reflection

36, 46, 49. . . Lens group

38. . . Digital light processing panel

50, 99a. . . First light

52. . . First lighting unit

60, 99b. . . Second light

70, 99c. . . Third light

80, 82, 901. . . Picture

90, 100, 200, 300, 400. . . Projection device

92, 108, 110, 112. . . Light source module

94. . . Integral unit

96, 104. . . lens

102. . . Lighting assembly

106, 304, 404. . . panel

114. . . Integral module

116. . . First channel

118. . . Second channel

120. . . Third channel

122. . . First filter unit

124. . . Second filter unit

125. . . First input end face

126. . . First central axis

127. . . First output end face

128. . . Second input end face

129. . . Second central axis

130. . . Second output end face

131. . . Third input end face

132. . . Third central axis

133. . . Third output end face

202. . . Light module

204. . . Third filter unit

206. . . Fourth filter unit

302, 402. . . Polarized beam splitting unit

Figure 1 is a schematic diagram of the architecture of a conventional digital processing projector.

2A is a schematic structural view of a first embodiment of a projection apparatus according to the present invention.

2B is a schematic structural view of an embodiment of a light source module according to FIG. 2A.

Figure 3A is a schematic view showing the structure in which the first angle and the second angle are 15 degrees at the same time according to Fig. 2A.

Figure 3B is a schematic view showing the structure in which the first angle and the second angle are 20 degrees according to Fig. 2A.

The 3C figure is a structural schematic diagram in which the first angle and the second angle are both 25 degrees according to FIG. 2A.

The 3D figure is a structural schematic diagram in which the first angle and the second angle are 30 degrees at the same time according to FIG. 2A.

Figure 3E is a schematic view showing the structure in which the first angle and the second angle are both 35 degrees according to Fig. 2A.

4 is a schematic structural view of a second embodiment of a projection apparatus according to the present invention.

Figure 5A is a schematic view showing the structure of the first angle and the second angle according to Fig. 4 being 15 degrees at the same time.

Figure 5B is a schematic view showing the structure in which the first angle and the second angle are 20 degrees at the same time according to Fig. 4.

Figure 5C is a schematic view showing the structure in which the first angle and the second angle are 25 degrees at the same time according to Fig. 4.

The 5D figure is a structural diagram of the first angle and the second angle according to FIG. 4 being 30 degrees at the same time.

Figure 5E is a schematic view showing the structure in which the first angle and the second angle are 35 degrees at the same time according to Fig. 4.

The fifth FF is a structural schematic diagram in which the first angle and the second angle of the fourth figure are 90 degrees at the same time.

Figure 6 is a schematic view showing the structure of a third embodiment of the projection apparatus according to the present invention.

Figure 7 is a schematic view showing the structure of a fourth embodiment of a projection apparatus according to the present invention.

41. . . Reflective element

42. . . Lens group

44. . . Total reflection

46. . . Lens group

50. . . First light

60. . . Second light

70. . . Third light

80. . . Picture

100. . . Projection device

102. . . Lighting assembly

104. . . lens

106. . . panel

108, 110, 112. . . Light source module

114. . . Integral module

116. . . First channel

118. . . Second channel

120. . . Third channel

122. . . First filter unit

124. . . Second filter unit

125. . . First input end face

126. . . First central axis

127. . . First output end face

128. . . Second input end face

129. . . Second central axis

130. . . Second output end face

131. . . Third input end face

132. . . Third central axis

133. . . Third output end face

Claims (10)

An illumination component includes: three light source modules, wherein the light source modules respectively output a first light, a second light, and a third light, the first light, the second light, and the third light The first module includes a first output end face, a second channel, the first output end surface is connected to the second channel, and a third channel includes a third output. An end surface, the third output end surface is connected to the second channel; a first filter unit is disposed between the first output end surface and the second channel, and reflects the second light and the third light a first light passing through; and a second filter unit disposed between the third output end surface and the second channel, and reflecting the first light and the second light and penetrating the third light; a first angle between the first channel and the second channel, the second channel and the second channel having a second angle, the first angle being greater than zero degrees and less than or equal to ninety degrees, the second The angle is greater than zero and less than or equal to ninety The second light, the first light passing through the first channel and the first filter unit, and the third light passing through the third channel and the second filter unit respectively pass through the second channel Integral module The first light, the second light, and the third light are output. The lighting assembly of claim 1, wherein the lighting assembly further comprises a light combining module disposed between the first filtering unit and the second filtering unit and receiving the first The first light of the channel and the first filter unit, the third light passing through the third channel and the second filter unit, and the second light incident on the second channel, so that the illumination component A second output end surface of the second channel outputs the first light, the second light, and the third light. The illumination assembly of claim 2, wherein the light combining module comprises a third filter unit and a fourth filter unit, the third filter unit reflects the third light and causes the first light to The second light beam penetrates, and the fourth light filtering unit reflects the first light and penetrates the second light and the third light. A projection device includes: an illumination component, comprising: three light source modules, wherein the light source modules are respectively configured to output a first light, a second light, and a third light, the first light and the second light Different from the wavelength of the third light; and an integration module comprising: a first channel, including a first output end surface; a second channel, the first output end surface is connected to the second channel; and a third channel The third output end surface is connected to the second channel; a first filter unit disposed between the first output end surface and the second channel, and reflecting the second light and the third light to penetrate the first light; and a second filter unit, And disposed between the third output end surface and the second channel, and reflecting the first light and the second light to penetrate the third light; wherein the first channel and the second channel have a first An angle between the third channel and the second channel, the first angle is greater than zero degrees and less than or equal to ninety degrees, and the second angle is greater than zero degrees and less than or equal to ninety degrees. The first light of the first channel and the first filter unit, the third light passing through the third channel and the second filter unit, and the second light incident on the second channel respectively pass through the second light Passing the integration module to output the first light, the second light and the third light; a lens module for converging the first light, the second light and the third from the integrating module Light; and a panel receiving the lens module A light, the second light and the third light, to project the screen. The projection device of claim 4, wherein the illumination assembly further comprises a light assembly module disposed between the first filter unit and the second filter unit and received through the first The first light of the channel and the first filter unit, the third light passing through the third channel and the second filter unit, and incident on the second The second light of the channel causes the illumination component to output the first light, the second light, and the third light from a second output end of the second channel. The projection device of claim 5, wherein the light combining module comprises a third filter unit and a fourth filter unit, the third filter unit reflects the third light and the first light The second light beam penetrates, and the fourth light filtering unit reflects the first light and penetrates the second light and the third light. The projection device of claim 4, wherein the projection device further comprises a polarization splitting unit, the polarized beam splitting unit being disposed between the panel and the lens module to partially pass the lens module The first light, the second light, and the third light are incident on the panel to project the picture. The projection device of claim 7, wherein the illumination assembly further comprises a light assembly module disposed between the first filter unit and the second filter unit and received through the first The first light of the channel and the first filter unit, the third light passing through the third channel and the second filter unit, and the second light incident on the second channel, so that the illumination component A second output end surface of the second channel outputs the first light, the second light, and the third light. The projection device of claim 8, wherein the light combining module comprises a third filter unit and a fourth filter unit, the third filter unit reflects the third light and causes the first light to The second light beam penetrates, and the fourth light filtering unit reflects the first light and penetrates the second light and the third light. The projection device of claim 4, wherein the lens module comprises at least one lens for converging the first light and the second light from the integration module Line with the third light.