Double-light-path enhanced and complementary 3D projection light machine

Abstract

The utility model discloses a dual-light-path enhanced and complementary 3D projection light machine, which comprises a first light source, a second light source, a first screen, a second screen, a first polarizing beam splitter, a second polarizing beam splitter, a reflection mechanism and a projection lens, and is characterized in that the first polarizing beam splitter is used for separating a first light path and a second light path which penetrate through the first polarizing beam splitter; the first light path passes through the first polarizing beam splitter to form a third light path and a fourth light path, and the second light path passes through the first polarizing beam splitter to form a fifth light path and a sixth light path; the first screen is arranged between the first polarizing beam splitter and the second polarizing beam splitter, the third light path and the fifth light path vertically penetrate through the first screen, the second screen is arranged between the second polarizing beam splitter and the reflection mechanism, and the reflection mechanism is used for guiding the fourth light path and the sixth light path to vertically penetrate through the second screen. And the second polarizing beam splitter is used for combining the third light path, the fifth light path, the fourth light path and the sixth light path into the same light path and outputting the light path to the projection lens.

Description

Technical Field

[0001] The utility model relates to the field of optical technology, in particular to a 3D projection optical machine with dual light paths enhanced and complementary. Background Art

[0002] In the existing projection optical machines, there are both dual-screen or triple-screen solutions, and dual-illumination optical path solutions or triple-illumination optical path solutions. In the existing solutions, in the multi-screen solution, the multiple screens are generally responsible for modulating different colors of light respectively. Even if they are responsible for modulating different polarized light, it is only to enhance the image brightness. Generally, it is a one-to-many solution, or an all-in-one solution. The multiple energy paths are relatively independent, and there are many devices, resulting in more light energy waste. In addition, due to the low light efficiency leading to screen heat problems, some projection optical machines solve the screen heat problem by setting up complex optical path structures, which in turn leads to complex structural problems. Therefore, there is a need for a dual-optical path enhanced complementary 3D projection optical machine that can solve the above technical problems. Utility Model Content

[0003] The main purpose of this application is to provide a 3D projection optical machine with dual optical paths enhanced and complementary, aiming to solve the problems mentioned in the background technology.

[0004] The present application provides a dual-light-path enhanced complementary 3D projection optical machine, comprising a first light source, a second light source, a first screen, a second screen, a first polarization beam splitter, a second polarization beam splitter, a reflection mechanism, and a projection lens, wherein a straight line where a first light path generated by the first light source is located and a straight line where a second light path generated by the second light source is located are perpendicular to each other, the first screen and the second screen are used to display an image, and the first screen and the second screen are perpendicular to each other, the first polarization beam splitter is used to separate a first light path and a second light path passing through the first polarization beam splitter, the first light path passes through the first polarization beam splitter to form a third light path and a fourth light path, the second light path passes through the first polarization beam splitter to form a fifth light path and a sixth light path, wherein the third light path and the fifth light path overlap, and the fourth light path and the sixth light path overlap;

[0005] The first screen is arranged between the first polarization beam splitter and the second polarization beam splitter, the third light path and the fifth light path vertically pass through the first screen, the second screen is arranged between the second polarization beam splitter and the reflection mechanism, the reflection mechanism is used to guide the fourth light path and the sixth light path to vertically pass through the second screen, and the second polarization beam splitter is used to combine the third light path, the fifth light path, the fourth light path and the sixth light path into a same light path and output them toward the projection lens.

[0006] Furthermore, the reflection mechanism includes a first reflector and a second reflector, the first reflector and the second reflector are perpendicular to each other, the incident angle of the fourth light path and the sixth light path to the first reflector is 45 degrees, the fourth light path and the sixth light path are reflected by the first reflector and projected onto the second reflector, and then reflected by the second reflector and vertically pass through the second screen.

[0007] Furthermore, the incident angle of the first light path toward the first polarization beam splitter is 45 degrees.

[0008] Furthermore, the third optical path and the fifth optical path are P-polarized light, and the fourth optical path and the sixth optical path are S-polarized light.

[0009] Further, the first polarization beam splitter and the second polarization beam splitter are perpendicular to each other, and the incident angles of the third light path and the fifth light path passing through the first screen toward the second polarization beam splitter are 45 degrees, and the incident angles of the fourth light path and the sixth light path passing through the second screen toward the second polarization beam splitter are 45 degrees.

[0010] Furthermore, it includes a third light source, and the light path generated by the third light source forms two split light paths after passing through the first polarization beam splitter, one of which coincides with the third light path and the fifth light path, and the other split light path coincides with the fourth light path and the sixth light path.

[0011] Furthermore, the first screen and the second screen are used to display the same image, so that the image projected by the same light path after the third light path, the fifth light path, the fourth light path and the sixth light path are combined is brightened.

[0012] Furthermore, the first screen is used to display a first image, and the second screen is used to display a second image similar to the first image, so that the image projected by the same light path after the third light path, the fifth light path, the fourth light path and the sixth light path are combined produces a three-dimensional effect.

[0013] In the utility model, a first light source, a second light source, a first screen, a second screen, a first polarization beam splitter, a second polarization beam splitter and a reflection mechanism are arranged, and different polarized lights are generated after the light paths of different light sources are polarized by the first polarization beam splitter. The first light path passes through the first polarization beam splitter to form a third light path and a fourth light path, and the second light path passes through the first polarization beam splitter to form a fifth light path and a sixth light path, wherein the third light path and the fifth light path overlap, and the fourth light path and the sixth light path overlap, and the first screen and the second screen are used to modulate P polarized light and S polarized light respectively, and polarized light not needed by any of the two screens is projected onto the other screen, and the two paths of light are mutually reinforcing and complementary, and the light efficiency is extremely high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 It is a structural schematic diagram of a dual-light-path enhanced and complementary 3D projection optical machine provided by an embodiment of the utility model.

[0017] Figure 2 yes Figure 1 Schematic diagram of the light path of the first light source in the embodiment.

[0018] Figure 3 yes Figure 1 Schematic diagram of the light path of the second light source in the embodiment.

[0019] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0021] See also Figure 1-3 The present application provides a dual-light-path enhanced complementary 3D projection optical machine 100, comprising a first light source 10, a second light source 20, a first screen 60, a second screen 70, a first polarization beam splitter 30, a second polarization beam splitter 40, a reflection mechanism 50 and a projection lens 80, wherein a straight line where a first light path generated by the first light source 10 and a straight line where a second light path generated by the second light source 20 are located are perpendicular to each other, the first screen 60 and the second screen 70 are used to display an image, and the first screen 60 and the second screen 70 are perpendicular to each other, and the first polarization beam splitter 30 is used to separate the first light path and the second light path passing through the first polarization beam splitter 30.

[0022] like Figure 2-3 As shown, the first light path passes through the first polarization beam splitter 30 to form a third light path and a fourth light path, and the second light path passes through the first polarization beam splitter 30 to form a fifth light path and a sixth light path, wherein the third light path overlaps with the fifth light path, and the fourth light path overlaps with the sixth light path.

[0023] The first screen 60 is arranged between the first polarization beam splitter 30 and the second polarization beam splitter 40, the third light path and the fifth light path vertically pass through the first screen 60, the second screen 70 is arranged between the second polarization beam splitter 40 and the reflection mechanism 50, the reflection mechanism 50 is used to guide the fourth light path and the sixth light path to vertically pass through the second screen 70, and the second polarization beam splitter 40 is used to combine the third light path, the fifth light path, the fourth light path and the sixth light path into a same light path and output them toward the projection lens 80.

[0024] In the utility model, a first light source 10, a second light source 20, a first screen 60, a second screen 70, a first polarization beam splitter 30, a second polarization beam splitter 40 and a reflection mechanism 50 are arranged, and different polarized lights are generated after the light paths of different light sources are polarized by the first polarization beam splitter 30. The first light path passes through the first polarization beam splitter 30 to form a third light path and a fourth light path, and the second light path passes through the first polarization beam splitter 30 to form a fifth light path and a sixth light path, wherein the third light path and the fifth light path overlap, and the fourth light path and the sixth light path overlap, and the first screen 60 and the second screen 70 are used to modulate P polarized light and S polarized light respectively, and polarized light not needed by any of the two screens is projected onto the other screen, and the two paths of light are mutually reinforcing and complementary, and the light efficiency is extremely high.

[0025] Specifically, in the utility model, the reflection mechanism 50 includes a first reflector 51 and a second reflector 52, the first reflector 51 and the second reflector 52 are perpendicular to each other, the incident angle of the fourth light path and the sixth light path to the first reflector 51 is 45 degrees, the fourth light path and the sixth light path are reflected by the first reflector 51 and projected onto the second reflector 52, and then reflected by the second reflector 52 and vertically pass through the second screen 70.

[0026] In one embodiment of the present invention, the incident angle of the first light path toward the first polarization beam splitter 30 is 45 degrees.

[0027] In one embodiment of the present invention, the third optical path and the fifth optical path are P polarized light, and the fourth optical path and the sixth optical path are S polarized light, that is, the first screen 60 is used to modulate P polarized light, and the second screen 70 is used to modulate S polarized light.

[0028] The specific working principle of an embodiment of the present invention is as follows: the first light source 10 generates a first light path, the second light source 20 generates a second light path, and the first light path is divided into two paths (a third light path and a fourth light path) after reaching the first polarization beam splitter 30, wherein the third light path is P polarized light that is reflected, and the fourth light path is S polarized light that is transmitted; the second light path is divided into two paths (a fifth light path and a sixth light path) after reaching the first polarization beam splitter 30, wherein the sixth light path is P polarized light that is reflected, and the fifth light path is S polarized light that is transmitted; the P polarized light directly hits the first screen 60, and the S polarized light hits the second screen 70 after reflection; the first screen 60 modulates the P polarized light, and the second screen 70 modulates the S polarized light; the light modulated by the two screens is combined by the first polarization beam splitter 30 to the projection lens 80 and is projected out.

[0029] In the present invention, the first polarization beam splitter 30 and the second polarization beam splitter 40 are perpendicular to each other, and the incident angles of the third light path and the fifth light path passing through the first screen 60 toward the second polarization beam splitter 40 are 45 degrees, and the incident angles of the fourth light path and the sixth light path passing through the second screen 70 toward the second polarization beam splitter 40 are 45 degrees.

[0030] Preferably, the 3D projection optical machine 100 also includes a third light source, and the light path generated by the third light source forms two split light paths after passing through the first polarization beam splitter 30, one of which coincides with the third light path and the fifth light path, and the other split light path coincides with the fourth light path and the sixth light path.

[0031] In one embodiment of the utility model, the first screen 60 and the second screen 70 are used to display the same image, so that the image projected by the same light path after the third light path, the fifth light path, the fourth light path and the sixth light path are combined is brightened; by displaying the same image on the first screen 60 and the second screen 70, the brightness of the two screens is superimposed to achieve a brightening effect.

[0032] In another embodiment of the present invention, the first screen 60 is used to display a first image, and the second screen 70 is used to display a second image similar to the first image, so that the image projected by the same light path after the third light path, the fifth light path, the fourth light path and the sixth light path are combined produces a three-dimensional effect. By displaying different images on two paths, it can be used as a projector for 3D movies.

[0033] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A 3D projection optical machine with dual optical paths enhanced and complementary, characterized in that: The invention comprises a first light source, a second light source, a first screen, a second screen, a first polarization beam splitter, a second polarization beam splitter, a reflection mechanism and a projection lens, wherein a straight line where a first light path generated by the first light source is located and a straight line where a second light path generated by the second light source is located are perpendicular to each other, the first screen and the second screen are used to display an image, and the first screen and the second screen are perpendicular to each other, the first polarization beam splitter is used to separate a first light path and a second light path passing through the first polarization beam splitter, the first light path passes through the first polarization beam splitter to form a third light path and a fourth light path, the second light path passes through the first polarization beam splitter to form a fifth light path and a sixth light path, wherein the third light path and the fifth light path overlap, and the fourth light path and the sixth light path overlap; The first screen is arranged between the first polarization beam splitter and the second polarization beam splitter, the third light path and the fifth light path vertically pass through the first screen, the second screen is arranged between the second polarization beam splitter and the reflection mechanism, the reflection mechanism is used to guide the fourth light path and the sixth light path to vertically pass through the second screen, and the second polarization beam splitter is used to combine the third light path, the fifth light path, the fourth light path and the sixth light path into a same light path and output them toward the projection lens.

2. The dual-light-path enhanced complementary 3D projection optical machine according to claim 1, characterized in that: The reflection mechanism includes a first reflector and a second reflector, the first reflector and the second reflector are perpendicular to each other, the incident angle of the fourth light path and the sixth light path to the first reflector is 45 degrees, the fourth light path and the sixth light path are reflected by the first reflector and projected to the second reflector, and then reflected by the second reflector and vertically pass through the second screen.

3. The dual-light-path enhanced complementary 3D projection optical machine according to claim 1, characterized in that: The incident angle of the first light path toward the first polarization beam splitter is 45 degrees.

4. The dual-light-path enhanced complementary 3D projection optical machine according to claim 1, characterized in that: The third optical path and the fifth optical path are P-polarized light, and the fourth optical path and the sixth optical path are S-polarized light.

5. The dual-light-path enhanced complementary 3D projection optical machine according to claim 1, characterized in that: The first polarization beam splitter and the second polarization beam splitter are perpendicular to each other, and the incident angles of the third light path and the fifth light path passing through the first screen toward the second polarization beam splitter are 45 degrees, and the incident angles of the fourth light path and the sixth light path passing through the second screen toward the second polarization beam splitter are 45 degrees.

6. The dual-light-path enhanced complementary 3D projection optical machine according to claim 1, characterized in that: It also includes a third light source. The light path generated by the third light source forms two split light paths after passing through the first polarization beam splitter. One of the split light paths coincides with the third light path and the fifth light path, and the other split light path coincides with the fourth light path and the sixth light path.

7. The dual-light-path enhanced complementary 3D projection optical machine according to claim 1, characterized in that: The first screen and the second screen are used to display the same image, so that the image projected by the same light path after the third light path, the fifth light path, the fourth light path and the sixth light path are combined is brightened.

8. The dual-light-path enhanced complementary 3D projection optical machine according to claim 1, characterized in that: The first screen is used to display a first image, and the second screen is used to display a second image similar to the first image, so that the image projected by the same light path after the third light path, the fifth light path, the fourth light path and the sixth light path are combined produces a three-dimensional effect.

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