Polarization synergistic light path system based on light combination and shaping of free-form surface reflector

Abstract

The utility model discloses a polarization synergy light path system based on light combination shaping of a free-form surface reflector, which comprises a non-polarized light source, a collimation assembly, a P-transmitting and S-reflecting film, a 1 / 2 wave plate, a plane reflector, the free-form surface reflector and a polarized light display chip, and is characterized in that the non-polarized light source is used for emitting non-polarized light, and the collimation assembly is used for collimating light emitted by the non-polarized light source; the P-transmitting and S-reflecting film is used for transmitting P light of non-polarized light and reflecting S light, the 1 / 2 wave plate is used for converting S light into P light, the plane mirror is used for reflecting the P light converted by the 1 / 2 wave plate to change the direction of a light path, and the free-form surface mirror is used for reflecting the P light penetrating through the P-transmitting and S-reflecting film and the P light reflected by the mirror so that the light path of the P light and the P light can be emitted to the polarized light display chip; after light emitted by the non-polarized light source is collimated by the collimation assembly, P light directly penetrates through and is projected to the free-form surface reflector when the light passes through the P-transmitting and S-reflecting film, S light is reflected by the P-transmitting and S-reflecting film and is converted into P light through the 1 / 2 wave plate, and the converted P light is reflected by the plane reflector and is projected to the free-form surface reflector.

Description

Technical Field

[0001] The utility model relates to the field of optical equipment, in particular to a polarization-enhanced optical path system based on light combining and shaping by a free-form surface reflector. Background Art

[0002] Existing polarized display technology can only utilize half the energy of the light source. Even if a polarizing element is added to the optical path, the optical efficiency of the optical path is difficult to achieve the desired effect, and the optical path architecture is complex. Therefore, a polarization efficiency enhancement optical path system that can solve the above technical problems is needed. Utility Model Content

[0003] The main purpose of this application is to provide a polarization enhancement optical path system based on free-form surface reflector light shaping, aiming to solve the problems mentioned in the background technology.

[0004] The present application provides a polarization-enhancing optical path system based on free-form surface mirror light combining and shaping, comprising a non-polarized light source, a collimating component, a transmissive P-reflective S film, a half-wave plate, a plane reflector, a free-form surface reflector, and a polarized display chip. The non-polarized light source is used to emit non-polarized light, the collimating component is used to collimate the light emitted by the non-polarized light source, the transmissive P-reflective S film is used to transmit P light and reflect S light, the half-wave plate is used to convert S light into P light, the plane reflector is used to reflect the P light converted by the half-wave plate and change the direction of the optical path, and the free-form surface reflector is used to reflect the P light passing through the transmissive P-reflective S film and the P light reflected by the reflector so that the optical path is directed toward the polarized display chip.

[0005] After the light emitted by the non-polarized light source is collimated by the collimating component, the P light directly passes through the transparent P-reflective S film and is projected onto the free-form surface reflector. The S light is reflected by the transparent P-reflective S film and converted into P light through a 1 / 2 wave plate. The converted P light is reflected by the plane reflector and then projected onto the free-form surface reflector.

[0006] Furthermore, the transparent P-reflective S film is tilted relative to the direction of the collimated light path, and the transparent P-reflective S film covers the direction of the collimated light path, so that the light path collimated by the collimating component passes through the transparent P-reflective S film.

[0007] Furthermore, the transparent P-reflective S film and the plane mirror are arranged in parallel, and the 1 / 2 wave plate is located between the transparent P-reflective S film and the plane mirror. The S light reflected by the transparent P-reflective S film passes through the 1 / 2 wave plate and then is projected onto the plane mirror.

[0008] Furthermore, the angle between the transparent P-reflective S film and the direction of the collimated light path is 45 degrees.

[0009] Furthermore, the 1 / 2 wave plate is parallel to the direction of the collimated light path.

[0010] Furthermore, the collimating assembly includes a first lens and a second lens, and the first lens and the second lens are used to focus and collimate the light emitted by the non-polarized light source.

[0011] Furthermore, the non-polarized light source is any one of an LED light source, a mercury lamp and a fluorescent lamp.

[0012] The utility model converts the original S light of the light source into P light by utilizing a transparent P-reflective S film element and a 1 / 2 wave plate element, and then combines and shapes the converted P light and the original P light with a free-form surface reflector, and then reflects it onto the polarized display chip. In this way, both the P light and the S light of the light source itself can be utilized through a simple optical path structure, thereby improving the light efficiency and increasing the brightness of the system. Moreover, compared with the traditional optical path, "light combining" requires a light combining mirror, and "shaping" of the light spot requires a compound eye lens or a homogenizing rod. The free-form surface reflector is used as a single element to achieve the effects of light combining and shaping, which reduces the complexity of the system design, has a simple structure and is easy to disassemble and assemble, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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.

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] Figure 1 It is a structural schematic diagram of a polarization enhancement optical path system based on light combining and shaping by a free-form surface reflector according to an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 Front view of the embodiment.

[0017] Figure 3 yes Figure 1 Schematic diagram of light path projection of an embodiment.

[0018] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] To make the above-mentioned purposes, features, and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] See also Figure 1-3 The present application provides a polarization enhancement optical path system 100 based on light combining and shaping by a free-form surface mirror 60, comprising a non-polarized light source 10, a collimating component, a transparent P-reflective S film 30, a 1 / 2 wave plate 40, a plane mirror 50, a free-form surface mirror 60 and a polarized display chip 70, wherein the non-polarized light source 10 is used to emit non-polarized light, the collimating component is used to collimate the light emitted by the non-polarized light source 10, the transparent P-reflective S film 30 is used to transmit P light and reflect S light, the 1 / 2 wave plate 40 is used to convert S light into P light, the plane mirror 50 is used to reflect the P light converted by the 1 / 2 wave plate 40 and change the direction of the optical path, and the free-form surface mirror 60 is used to reflect the P light passing through the transparent P-reflective S film 30 and the P light reflected by the mirror so that its optical path is directed toward the polarized display chip 70.

[0021] After the light emitted by the non-polarized light source 10 is collimated by the collimating component, the P light directly passes through the transparent P-reflective S film 30 and is projected onto the free-form surface reflector 60. The S light is reflected by the transparent P-reflective S film 30 and converted into P light through the 1 / 2 wave plate 40. The converted P light is reflected by the plane reflector 50 and then projected onto the free-form surface reflector 60.

[0022] The present invention converts the original S light of the light source into P light by utilizing a transparent P-reflective S film 30 element and a 1 / 2 wave plate 40 element, and then combines and shapes the converted P light and the original P light through a free-form surface reflector 60, and then reflects it onto the polarized display chip 70. In this way, both the P light and the S light of the light source itself can be utilized through a simple optical path structure, thereby improving the light efficiency and increasing the brightness of the system. Moreover, compared with the traditional optical path, "light combining" requires a light combining mirror, and "shaping" of the light spot requires a compound eye lens or a homogenizing rod. The free-form surface reflector 60 is used as a single element to achieve the effects of light combining and shaping, which reduces the complexity of the system design, has a simple structure and is easy to disassemble and assemble, and reduces costs.

[0023] In one embodiment of the present invention, the transparent P-reflective S film 30 is tilted relative to the direction of the collimated light path, and the transparent P-reflective S film 30 covers the direction of the collimated light path so that the light path collimated by the collimating component passes through the transparent P-reflective S film 30.

[0024] In one embodiment of the present invention, the transparent P-reflective S film 30 and the plane mirror 50 are arranged in parallel, and the 1 / 2 wave plate 40 is located between the transparent P-reflective S film 30 and the plane mirror 50. The S light reflected by the transparent P-reflective S film 30 passes through the 1 / 2 wave plate 40 and then is projected onto the plane mirror 50.

[0025] In one embodiment of the present invention, the angle between the transparent P-reflective S film 30 and the direction of the collimated light path is 45 degrees.

[0026] In one embodiment of the present invention, the half wave plate 40 is parallel to the direction of the collimated light path.

[0027] In one embodiment of the present invention, the collimating assembly includes a first lens 21 and a second lens 22 , and the first lens 21 and the second lens 22 are used to focus the light emitted by the non-polarized light source.

[0028] In one embodiment of the present invention, the non-polarized light source 10 is a light source such as an LED light source, a mercury lamp or a fluorescent lamp.

[0029] The above are only preferred embodiments of the present application and do not 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 polarization enhancement optical path system based on free-form surface reflector light shaping, characterized in that: The device comprises a non-polarized light source, a collimating component, a transmissive P-reflective S film, a half-wave plate, a plane reflector, a free-form surface reflector, and a polarized display chip, wherein the non-polarized light source is used to emit non-polarized light, the collimating component is used to collimate the light emitted by the non-polarized light source, the transmissive P-reflective S film is used to transmit non-polarized P light and reflect S light, the half-wave plate is used to convert S light into P light, the plane reflector is used to reflect the P light converted by the half-wave plate and change the direction of the light path, and the free-form surface reflector is used to reflect the P light passing through the transmissive P-reflective S film and the P light reflected by the reflector so that the light path is directed toward the polarized display chip; After the light emitted by the non-polarized light source is collimated by the collimating component, the P light directly passes through the transparent P-reflective S film and is projected onto the free-form surface reflector. The S light is reflected by the transparent P-reflective S film and converted into P light through a 1 / 2 wave plate. The converted P light is reflected by the plane reflector and then projected onto the free-form surface reflector.

2. The polarization enhancement optical path system based on free-form surface reflector light combining and shaping according to claim 1, characterized in that: The transparent P-reflective S film is tilted relative to the direction of the collimated light path, and the transparent P-reflective S film covers the direction of the collimated light path, so that the light path collimated by the collimating component passes through the transparent P-reflective S film.

3. The polarization enhancement optical path system based on free-form surface reflector light combining and shaping according to claim 2, characterized in that: The transparent P-reflective S film and the plane mirror are arranged in parallel, and the 1 / 2 wave plate is located between the transparent P-reflective S film and the plane mirror. The S light reflected by the transparent P-reflective S film passes through the 1 / 2 wave plate and then is projected onto the plane mirror.

4. The polarization enhancement optical path system based on free-form surface reflector light combining and shaping according to claim 3, characterized in that: The angle between the transparent P-reflective S film and the direction of the collimated light path is 45 degrees.

5. The polarization enhancement optical path system based on free-form surface reflector light combining and shaping according to claim 3, characterized in that: The 1 / 2 wave plate is parallel to the direction of the collimated light path.

6. The polarization enhancement optical path system based on free-form surface reflector light combining and shaping according to claim 1, characterized in that: The collimating assembly includes a first lens and a second lens, and the first lens and the second lens are used to focus and collimate the light emitted by the non-polarized light source.

7. The polarization enhancement optical path system based on free-form surface reflector light combining and shaping according to claim 1, characterized in that: The non-polarized light source is any one of an LED light source, a mercury lamp and a fluorescent lamp.

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