Integrated true three-dimensional display device based on split Roman lens

Abstract

The utility model relates to the technical field of three-dimensional display devices, and discloses an integrated true three-dimensional display device based on a split Roman lens. Comprising a main body, an OLED display screen fixedly mounted on the left side of the main body, a reflective refreshable phase modulation device fixedly mounted on the right side of the main body, and an observation platform arranged above the main body, a first lens mechanism is arranged on the left side in the main body, and a light splitting mechanism is arranged on the right side of the first lens mechanism; the light splitting mechanism is arranged on the main body, the second lens mechanism is arranged above the light splitting mechanism, the cubic phase mechanism is arranged on the right side of the light splitting mechanism, and the third lens mechanism is arranged on the right side of the cubic phase mechanism. The first reflection mechanism and the second reflection mechanism are arranged on the left side and the right side respectively, and the fourth lens mechanism and the fifth lens mechanism are arranged in front of the two reflection mechanisms respectively. According to the utility model, the problems that the existing split device needs to manually assemble and adjust the light path before use, a lot of time is consumed, the precision is low, the device can be conveniently, efficiently and quickly used, and good experience feeling is obtained are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-dimensional display devices, and particularly relates to an integrated true three-dimensional display device based on a split Lohmann lens. Background Technique

[0002] The three-dimensional display system is mainly used to enable viewers to obtain a real sense of spatial experience, enabling the pictures viewed by users to have depth information, making them feel as if they are on the scene. The system can output a color stereoscopic picture with depth information through the input RGBD information to realize the spatial stereoscopic perception of users.

[0003] According to a disclosed split Lohmann lens display device, the device realizes the display of a true three-dimensional picture by setting an OLED display screen, a refreshable phase modulation device, a cubic phase plate, a beam splitter and an optical lens group; however, the device is too large in size and not convenient for head-mounted applications in real scenarios, and the device needs to go through complex device installation and optical path calibration before use, which is not convenient for daily use.

[0004] Therefore, we propose an integrated true three-dimensional display device based on a split Lohmann lens to solve the problem. Content of the Utility Model

[0005] The purpose of the utility model is to provide an integrated true three-dimensional display device based on a split Lohmann lens, which solves the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An integrated true three-dimensional display device based on a split Lohmann lens, comprising a main body;

[0007] An OLED display screen fixedly installed at the first end of the main body;

[0008] A first lens mechanism arranged inside the main body, the optical axis of the lens being perpendicular to the OLED display screen and located at its center, and the OLED display screen being located at the front focal plane of the first lens mechanism;

[0009] A cubic phase mechanism arranged at the rear focal plane of the first lens mechanism;

[0010] A beam splitting mechanism arranged between the first lens mechanism and the cubic phase mechanism;

[0011] A second lens mechanism arranged above or below the beam splitting mechanism;

[0012] A third lens mechanism arranged behind the optical axis of the cubic phase mechanism, and the cubic phase mechanism being located at the front focal plane of the third lens mechanism;

[0013] A reflective refreshable phase modulation device fixedly installed on the second end of the main body on the side opposite to the first end, and the refreshable phase modulation device is located at the rear focal plane of the third lens mechanism;

[0014] And an observation platform arranged above or below the main body, characterized in that: the observation platform and the second lens mechanism are on the same side of the main body; the observation platform is connected to the main body, and the observation platform includes an optical path conversion mechanism arranged at its center, a first reflection mechanism and a second reflection mechanism arranged on the left and right sides respectively, and a fourth lens mechanism and a fifth lens mechanism arranged behind the two reflection mechanisms close to the observation side;

[0015] The main body, the optical path conversion mechanism, the first reflection mechanism and the second reflection mechanism are on the first optical plane, and the optical path conversion mechanism, the first reflection mechanism, the second reflection mechanism, the fourth lens mechanism and the fifth lens mechanism are on the second optical plane perpendicular to the first optical plane; the distance between the centers of the fourth lens mechanism and the fifth lens mechanism is d1, the focal lengths of the first lens mechanism, the second lens mechanism and the third lens mechanism are all f1, the focal lengths of the fourth lens mechanism and the fifth lens mechanism are all f2, the distances between the optical path conversion mechanism and the first reflection mechanism and the second reflection mechanism are both d1 / 2, the distance between the optical path conversion mechanism and the second lens mechanism is d2, and the distance between the first reflection mechanism and the fourth lens mechanism is d3; the relationship satisfied among f1, f2, d1, d2 and d3 is: (d1 / 2 + d2 + d3) < (f1 + f2), and the magnification N of the eyepiece formed by the fourth lens mechanism and the fifth lens mechanism is N = 250 * [(f1 + f2) - (d1 / 2 + d2 + d3)] / (f1 * f2).

[0016] Preferably, the lens mechanism includes a lens groove opened inside the main body and an optical lens, and the optical lens is placed in the lens groove, so as to determine the absolute position of the lens, which is convenient for manual assembly and optical path alignment, and at the same time is convenient for protecting the lens.

[0017] Preferably, the beam splitting mechanism includes a square groove opened inside the main body and a beam splitter, and the beam splitter is placed in the square groove, so as to determine the absolute position of the beam splitter, which is convenient for manual assembly and optical path alignment.

[0018] Preferably, the cubic phase mechanism includes a square small hole opened inside the main body and a cubic phase plate, and the cubic phase plate is placed in the square small hole, so as to determine the absolute position of the cubic phase plate, which is convenient for manual assembly and optical path alignment. At the same time, the size of the square groove is larger than that of the cubic phase plate, which is convenient for the cubic phase plate to be placed into the square small hole.

[0019] Preferably, the optical path conversion mechanism includes a fixed bracket and a right-angle reflector fixedly installed on the observation platform. The right-angle reflector is placed in the fixed bracket, which is convenient for manual assembly and optical path alignment. At the same time, the right-angle reflector is inverted and suspended on the top of the observation platform to perform optical path conversion.

[0020] Preferably, the reflection mechanism includes a positioning bracket and a plane mirror fixedly installed at the left and right ends of the plane of the observation platform. The plane mirror is placed in the positioning bracket, which is convenient for determining the fixed position of the plane mirror, and thus convenient for manual assembly and optical path alignment.

[0021] Preferably, the observation platform and the main body are connected by a mortise and tenon method, which can make the fixing effect of the observation platform and the main body better, and thus make the whole more stable during use. At the same time, the observation platform can be flexibly disassembled, which is convenient for placing optical lenses, beam splitters, and phase cubic plates in the main body.

[0022] The present invention provides an integrated true three-dimensional display device based on a split Roman lens. The integrated true three-dimensional display device based on the split Roman lens has the following beneficial effects:

[0023] 1. For the integrated true three-dimensional display device based on the split Roman lens, by setting a mortise and tenon connection mechanism, after the observation platform and the main body are connected by mortise and tenon, the fixing effect of the observation platform and the main body can be better, and thus the whole can be more stable during use. At the same time, the observation platform supports flexible disassembly, which is convenient for disassembling and assembling optical components such as optical lenses, beam splitters, and phase cubic plates in the main body;

[0024] 2. For the integrated true three-dimensional display device based on the split Roman lens, by setting a series of mirror grooves, square grooves, square small holes, fixed brackets, and positioning brackets, the positioning of all optical components is realized, so that the integration degree of the optical structure is high, miniaturized binocular display is achieved, and at the same time, the difficulty of optical path alignment is greatly reduced, and thus the production and manufacturing process is more simple and convenient;

[0025] 3. For the integrated true three-dimensional display device based on the split Roman lens, by setting a series of optical lens mechanisms, beam splitting mechanisms, cubic phase mechanisms, and optical path conversion mechanisms, under the action of an OLED display screen, a series of optical lenses, beam splitters, cubic phase plates, and reflective refreshable phase modulation devices, the effect of real-time true three-dimensional dynamic display can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a schematic diagram of the main body structure of the present invention;

[0028] Figure 3 Schematic supplementary diagram of the main structure of the present utility model;

[0029] Figure 4 Schematic diagram of the observation platform structure of the present utility model;

[0030] Figure 5 Schematic supplementary diagram of the observation platform structure of the present utility model;

[0031] In the figure: 1. Main body; 2. First lens mechanism; 21. First lens groove; 22. First optical lens; 3. Beam splitting mechanism; 31. Cube groove; 32. Beam splitter; 4. Second lens mechanism; 41. Second lens groove; 42. Second optical lens; 5. Cubic phase mechanism; 51. Square small hole; 52. Cubic phase plate; 6. Third lens mechanism; 61. Third lens groove; 62. Third optical lens; 7. OLED display screen; 8. Reflective refreshable phase modulation device; 9. Observation platform; 91. Optical path transformation mechanism; 911. Fixed bracket; 912. Right-angle reflector; 92. First reflection mechanism; 921. First positioning bracket; 922. First plane mirror; 93. Second reflection mechanism; 931. Second positioning bracket; 932. Second plane mirror; 94. Fourth lens mechanism; 941. Fourth lens groove; 942. Fourth optical lens; 95. Fifth lens mechanism; 951. Fifth lens groove; 952. Fifth optical lens; 10. Mortise and tenon connection mechanism; 101. Mortise groove; 102. Tenon head. Detailed implementation manners

[0032] In order to have a clearer understanding of the technical features, objectives and effects of the present utility model, the detailed implementation manners of the present utility model will now be described with reference to the accompanying drawings. Embodiment

[0033] As Figures 1-5As shown in the figure, the present utility model provides a technical solution: an integrated true three-dimensional display device based on a split Roman lens, which includes a main body 1, an OLED display screen 7 fixedly installed on the left side of the main body, a reflective refreshable phase modulation device 8 fixedly installed on the right side of the main body, and an observation platform 9 arranged above the main body. A first lens mechanism 2 is arranged on the left side inside the main body 1, a beam splitting mechanism 3 is arranged on the right side of the first lens mechanism 2, a second lens mechanism 4 is arranged above the beam splitting mechanism 3, a cubic phase mechanism 5 is arranged on the right side of the beam splitting mechanism 4, and a third lens mechanism 6 is arranged on the right side of the cubic phase mechanism 5. The first lens mechanism 2 includes a first mirror groove 21 and a first optical lens 22 opened inside the main body 1. The beam splitting mechanism 3 includes a square groove 31 and a beam splitter 32 opened inside the main body 1. The second lens mechanism 4 includes a second mirror groove 41 and a second optical lens 42 opened inside the main body 1. The cubic phase mechanism 5 includes a square small hole 51 and a cubic phase plate 52 opened inside the main body 1. The third lens mechanism 6 includes a third mirror groove 61 and a third optical lens 62 opened inside the main body 1. The observation platform 9 and the main body 1 are connected in a mortise and tenon manner through a mortise groove 101 and a tenon 102. The observation platform 9 includes an optical path conversion mechanism 91 arranged at its center, a first reflection mechanism 92 placed on the left side, and a second reflection mechanism 93 placed on the right side. A fourth lens mechanism 94 and a fifth lens mechanism 95 are respectively placed in front of the two reflection mechanisms 92 and 93. The optical path conversion mechanism 91 includes a fixed bracket 911 and a right-angle reflector 912 fixedly installed on the top of the observation platform 9. The first reflection mechanism 92 includes a first positioning bracket 921 and a first plane reflector 922 fixedly installed at the left end of the plane of the observation platform 9. The second reflection mechanism 93 includes a second positioning bracket 931 and a second plane reflector 932 fixedly installed at the left end of the plane of the observation platform 9. The fourth lens mechanism 94 includes a fourth mirror groove 941 and a fourth optical lens 942 opened inside the observation platform 9. The fifth lens mechanism 95 includes a fifth mirror groove 951 and a fifth optical lens 952 opened inside the observation platform 9.

[0034] In this embodiment, the mortise groove 101 and the tenon 102 are connected in a mortise and tenon manner, which can make the fixing effect of the observation platform 9 and the main body 1 better. Furthermore, the whole can be more stable during use, and at the same time, the observation platform 9 supports flexible disassembly, which is convenient for disassembling and assembling optical elements such as optical lenses, beam splitters, and cubic phase plates in the main body 1.

[0035] Furthermore, the optical lenses 22, 42, 62, 942, 952 are adapted to the mirror grooves 21, 41, 61, 941, 951, the optical splitter 32 is adapted to the square groove 31, the cubic phase plate 52 is adapted to the square small hole 51, the right-angle reflector 912 is adapted to the fixed bracket 911, and the plane reflectors 922, 932 are adapted to the positioning brackets 921, 931, achieving the positioning of all optical elements, thus making the optical structure highly integrated and greatly reducing the difficulty of optical path alignment, and further greatly simplifying the manual disassembly and assembly operations.

[0036] When the device is in use, first, the cubic phase plate 52 is manually placed into the square small hole 51, then the optical splitter 32 is placed into the square groove 31, after that, the first optical lens 22 is placed into the first mirror groove 21, the second optical lens 42 is placed into the second mirror groove 41, the third optical lens 62 is placed into the first mirror groove 61, then the observation platform 9 is inserted into the tenon groove 101 of the main body 1 through the tenon 102, further, the right-angle reflector 912 is placed into the fixed bracket 911, the first plane reflector 922 is placed into the first positioning bracket 921, the second plane reflector 932 is placed into the second positioning bracket 931, and finally, the fourth optical lens 942 is placed into the fourth mirror groove 941, and the fifth optical lens 952 is placed into the fifth mirror groove 951, thus realizing the quick assembly of the device, and the operation is simple and convenient. Embodiment

[0037] Such as Figures 1-5As shown in the figure, the present utility model provides a technical solution: an integrated true three-dimensional display device based on a split Roman lens. The focal lengths of the first optical lens 22, the second optical lens 42, and the third optical lens 62 are all f1, the focal lengths of the fourth optical lens 942 and the fifth optical lens 952 are all f2, and the distance between the centers of the fourth lens mechanism and the fifth lens mechanism is d1. The focal lengths of the first lens mechanism, the second lens mechanism, and the third lens mechanism are all f1, and the focal lengths of the fourth lens mechanism and the fifth lens mechanism are all f2. The distances between the optical path conversion mechanism and the first reflection mechanism and the second reflection mechanism are both d1 / 2, the distance between the optical path conversion mechanism and the second lens mechanism is d2, and the distance between the first reflection mechanism and the fourth lens mechanism is d3. The relationship satisfied among f1, f2, d1, d2, and d3 is: (d1 / 2 + d2 + d3) < (f1 + f2). The magnification N of the eyepiece formed by the fourth lens mechanism and the fifth lens mechanism is N = 250 * [(f1 + f2) - (d1 / 2 + d2 + d3)] / (f1 * f2). In the main body 1, the optical path between the OLED display screen 7 and the first optical lens 22 is f1, the optical path between the first optical lens 22 and the cubic phase plate 52 is f1, the optical path between the phase cubic plate 52 and the third optical lens 62 is f1, the optical path between the cubic phase plate 52 and the second optical lens 42 is f1, and the optical path between the phase cubic plate 52 and the third optical lens 22 is f1. Embodiment

[0038] The resolution of the OLED display screen 7 is 1920×1200. The focal lengths of all the first optical lens 22, the second optical lens 42, and the third optical lens 62 are 30 mm. The size of the beam splitter 32 is 23 mm * 22.5 mm * 23 mm. The size of the cubic phase plate 52 is 14 mm * 14 mm * 14 mm. The resolution of the reflective refreshable phase modulation device 8 is 1920×1200. The width of the right-angle surface of the right-angle mirror 912 is 21.21. The distance d2 from the midpoint of the right-angle surface of the right-angle mirror 912 to the second optical lens 42 is 6.6 mm. The distances d1 / 2 from the right-angle mirror 912 to the first plane mirror 922 and the second plane mirror 932 are both 25.9 mm. The distances d3 between the first plane mirror 922 and the fourth optical lens 942 and between the second plane mirror 932 and the fifth optical lens 952 are both 20.9 mm. The focal lengths of the fourth optical lens 942 and the fifth optical lens 952 are both 50.8 mm. The magnification N is 10 times. The redundant space x of the 3D integrated model is 0.5 mm.

[0039] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated true three-dimensional display device based on a split Roman lens, characterized in that: Includes subject (1); An OLED display screen (7) fixedly mounted on a first end of the main body (1); A first lens mechanism (2) is arranged inside the main body (1), the optical axis of the lens is perpendicular to the OLED display screen (7) and is located at the center thereof, and the OLED display screen (7) is located at the front focal plane of the first lens mechanism (2); A cubic phase mechanism (5) arranged on the rear focal plane of the first lens mechanism (2); A light splitting mechanism (3) arranged between the first lens mechanism (2) and the cubic phase mechanism (5); A second lens mechanism (4) arranged above or below the light splitting mechanism (3); A third lens mechanism (6) is arranged on the rear side of the optical axis of the cubic phase mechanism (5), and the cubic phase mechanism (5) is located on the front focal plane of the third lens mechanism (6); A reflective refreshable phase modulation device (8) fixedly mounted on a second end of the main body (1) on the other side of the first end, wherein the refreshable phase modulation device (8) is located at a rear focal plane of the third lens mechanism (6); and an observation platform (9) arranged above or below the main body (1), characterized in that: the observation platform (9) and the second lens mechanism (4) are located on the same side of the main body (1); the observation platform (9) is connected to the main body (1), and the observation platform (9) comprises an optical path conversion mechanism (91) arranged at the center thereof, a first reflection mechanism (92) and a second reflection mechanism (93) arranged on the left and right sides, and a fourth lens mechanism (94) and a fifth lens mechanism (95) respectively arranged behind the two reflection mechanisms (92, 93) and close to the observation side; The main body (1), the optical path conversion mechanism (91), the first reflection mechanism (92) and the second reflection mechanism (93) are on a first optical plane; the optical path conversion mechanism (91), the first reflection mechanism (92), the second reflection mechanism (93), the fourth lens mechanism (94) and the fifth lens mechanism (95) are on a second optical plane perpendicular to the first optical plane; the distance between the centers of the fourth lens mechanism (94) and the fifth lens mechanism (95) is d1; the focal lengths of the first lens mechanism (2), the second lens mechanism (4) and the third lens mechanism (6) are all f1; the focal lengths of the fourth lens mechanism (94) and the fifth lens mechanism (95) are The distances between the optical path conversion mechanism (91) and the first reflection mechanism (92) and the second reflection mechanism (93) are all d1 / 2, the distance between the optical path conversion mechanism (91) and the second lens mechanism (4) is d2, and the distance between the first reflection mechanism (92) and the fourth lens mechanism (94) is d3; wherein the relationship between f1, f2, d1, d2 and d3 is: (d1 / 2+d2+d3)<(f1+f2), and the magnification of the eyepiece formed by the fourth lens mechanism and the fifth lens mechanism is N=250*[(f1+f2)-(d1 / 2+d2+d3)] / (f1*f2).

2. The integrated true three-dimensional display device based on a split Roman lens according to claim 1, characterized in that: The first lens mechanism (2) comprises a first mirror groove (21) and a first optical lens (22) provided inside the main body (1), wherein the first optical lens (22) is placed in the first mirror groove (21); and the first optical lens (22) is adapted to the first mirror groove (21); the second lens mechanism (4) comprises a second mirror groove (41) and a second optical lens (42) provided inside the main body (1), wherein the second optical lens (42) is placed in the second mirror groove (41); and the second optical lens (42) is adapted to the second mirror groove (41); the third lens mechanism (6) comprises a third mirror groove (61) provided inside the main body (1) and a third optical lens (62), wherein the third optical lens (62) is placed in the third mirror groove (61); and the third optical lens (62) is adapted to the third mirror groove (61).

3. The integrated true three-dimensional display device based on a split Roman lens according to claim 1, characterized in that: The light splitting mechanism (3) comprises a square groove (31) opened inside the main body (1) and a light splitter (32), wherein the light splitter (32) is placed in the square groove (31); the light splitter (32) is adapted to the square groove (31).

4. The integrated true three-dimensional display device based on a split Roman lens according to claim 1, characterized in that: The cubic phase mechanism (5) comprises a square small hole (51) opened inside the main body (1) and a cubic phase plate (52), wherein the cubic phase plate (52) is placed in the square small hole (51); the cubic phase plate (52) is adapted to fit the square small hole (51).

5. The integrated true three-dimensional display device based on a split Roman lens according to claim 1, characterized in that: The fourth lens mechanism (94) comprises a fourth mirror groove (941) and a fourth optical lens (942) opened inside the observation platform (9), wherein the fourth optical lens (942) is placed in the fourth mirror groove (941); the fourth optical lens (942) is matched with the fourth mirror groove (941); the fifth lens mechanism (95) comprises a fifth mirror groove (951) and a fifth optical lens (952) opened inside the observation platform (9), wherein the fifth optical lens (952) is placed in the fifth mirror groove (951); the fifth optical lens (952) is matched with the fifth mirror groove (951).

6. The integrated true three-dimensional display device based on a split Roman lens according to claim 1, characterized in that: The optical path conversion mechanism (91) comprises a fixed bracket (911) and a right-angle reflector (912) fixedly mounted on the top of the observation platform (9); the right-angle reflector (912) is placed in the fixed bracket (911); and the right-angle reflector (912) is adapted to the fixed bracket (911).

7. The integrated true three-dimensional display device based on a split Roman lens according to claim 1, characterized in that: The first reflecting mechanism (92) comprises a first positioning bracket (921) and a first plane reflecting mirror (922) fixedly mounted on the left end of the plane of the observation platform (9), wherein the first plane reflecting mirror (922) is placed in the first positioning bracket (921); the first plane reflecting mirror (922) is adapted to the first positioning bracket (921); the second reflecting mechanism (93) comprises a second positioning bracket (931) and a second plane reflecting mirror (932) fixedly mounted on the left end of the plane of the observation platform (9), wherein the second plane reflecting mirror (932) is placed in the second positioning bracket (931); The second plane reflector (932) is adapted to the second positioning bracket (931).

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