A multifunctional glasses

Abstract

To solve the problem that traditional 3D displays have depth-of-field limitations and viewers are prone to visual fatigue, the present invention proposes a multifunctional glasses. The multifunctional glasses proposed by the present invention can also be used as pinhole glasses for correcting myopia in children. The multifunctional glasses include lenses. The lenses include a first diaphragm sheet, a second diaphragm sheet, and a third diaphragm sheet. The first diaphragm sheet, the second diaphragm sheet, and the third diaphragm sheet all include pinhole arrays, and an optical combination is formed thereby, and the optical combination forms a virtual aperture diaphragm array. One of the virtual aperture diaphragms in the virtual aperture diaphragm array is located near the human eye pupil. The diameter of the virtual aperture diaphragm is smaller than the diameter of the human eye pupil, thereby restricting the imaging light beam. Based on the aperture diaphragm principle, the invention can effectively increase the depth of field, and has the beneficial effect of having a larger field of view compared to traditional pinhole glasses.

Description

Technical Field

[0001] The present invention belongs to the field of display technology, and more specifically, the present invention relates to a multifunctional glasses. Background Art

[0002] 3D display devices usually have a depth-of-field limitation, that is, the pixels of a 3D image have a range in which a clear image is formed. Taking a grating 3D display as an example, its 3D pixels form a clear image at the screen position; and taking an integral imaging 3D display as an example, its 3D pixels form a clear image at the position of its central depth plane. When the stereoscopic scene exceeds its depth-of-field range, the viewer cannot see a clear image, which is likely to cause visual fatigue. Taking a grating 3D display as an example, when a certain 3D pixel is located 10 cm outside the screen, the human eye should focus on this position according to the habit. However, since the actual pixel is located at the screen position and forms a clear image there, the human eye cannot see a clear image when focusing correctly. This deviation between the human eye habit and the actual focus is very likely to cause visual fatigue. For this reason, the present invention proposes a multifunctional glasses, which realizes a virtual aperture stop through an optical structure. The virtual aperture stop can play a role in selecting the imaging beam, thereby greatly improving the depth of field of the 3D display device image. Based on the technical principle of the present invention, it can be applied to any type of 3D display device and obtain the effect of increasing the depth of field.

[0003] At the same time, the multifunctional glasses of the present invention can also be applied to the correction of pediatric myopia. Existing pediatric myopia correction glasses often use physical small holes to form an aperture stop and assist in correcting vision. Since the position of the physical small hole cannot overlap with the human eye pupil, in addition to the aperture stop effect, it also has a field stop effect. The field stop has a limiting effect on the range that the human eye can see, resulting in a small field of view of existing pediatric myopia correction glasses. The virtual aperture stop formed by the present invention can overlap with the human eye pupil and allow light rays to enter from any direction. Therefore, it has the technical advantage of a larger field of view compared with traditional pediatric myopia correction. Summary of the Invention

[0004] To solve the problem that traditional 3D displays have a depth-of-field limitation and viewers are prone to visual fatigue, the present invention proposes a multifunctional glasses. The multifunctional glasses proposed by the present invention can also be used for the correction of pediatric myopia, and has the beneficial effect of a larger field of view compared with traditional pediatric myopia correction glasses.

[0005] The multifunctional glasses include lenses.

[0006] The lenses include a first aperture stop sheet, a second aperture stop sheet and a third aperture stop sheet.

[0007] The first aperture stop sheet, the second aperture stop sheet and the third aperture stop sheet are sequentially spaced from front to back.

[0008] The first aperture plate, the second aperture plate, and the third aperture plate all include a small hole array.

[0009] Light rays are incident on the human eye position successively through the small hole array of the first aperture plate, the small hole array of the second aperture plate, and the small hole array of the third aperture plate.

[0010] The first aperture plate, the second aperture plate, and the third aperture plate form an optical combination, and this optical combination forms a virtual aperture diaphragm array.

[0011] One of the virtual aperture diaphragms in the virtual aperture diaphragm array is located near the human eye pupil.

[0012] The diameter of the virtual aperture diaphragm is smaller than the diameter of the human eye pupil, thereby restricting the imaging light beam.

[0013] Preferably, the pitch of the virtual aperture diaphragm is greater than or equal to the diameter of the human eye pupil, thereby avoiding ghost images.

[0014] Preferably, let the diameter of the small hole of the first aperture plate be W1, the pitch of the small holes of the first aperture plate be P1, the pitch of the second aperture plate be P2, the diameter of the small hole of the third aperture plate be W2, the distance from the first aperture plate to the second aperture plate be D1, the distance from the first aperture plate to the third aperture plate be D2, the distance from the first aperture plate to the virtual aperture plate be D3, the diameter of the virtual aperture diaphragm on the virtual aperture plate be W3, the pitch of the virtual aperture diaphragm be P3, and the diameter of the human eye pupil be K. The above relationships should satisfy:

[0015] ;

[0016] ;

[0017] ;

[0018] ;

[0019] W3 < K.

[0020] It should be noted that the above relational expressions are sufficient but unnecessary conditions for realizing the technical principle of the present invention, and the designer can adjust the above parameters to achieve a similar effect.

[0021] Furthermore, the present invention uses the first aperture plate, the second aperture plate, and the third aperture plate to form an optical combination, which can effectively reduce the blind area. Let the blind area be in front of the first aperture plate, and its front and back length be D4. D4 satisfies:

[0022] , where W4 is the pitch of the small holes of the first aperture plate, and W4 = P1 - W1.

[0023] That is, objects more than D4 away from the first aperture plate can be seen completely.

[0024] Furthermore, since all the small holes on the first diaphragm in the present invention can form a virtual aperture diaphragm at the same position through the second diaphragm and the third diaphragm, the present invention has a larger viewing angle compared to the traditional mode.

[0025] Optionally, the second diaphragm is removed, and the number of small holes in the first diaphragm and the third diaphragm is reduced to form a low-cost solution, but its blind area is relatively large.

[0026] Optionally, the third diaphragm is removed, and the number of small holes in the first diaphragm and the second diaphragm is reduced to form a low-cost solution, but its blind area is relatively large.

[0027] Optionally, the small holes on any diaphragm are replaced with slits, and the slit width parameter is the same as the small hole diameter parameter.

[0028] Optionally, on two adjacent small holes on any diaphragm, polarizers with orthogonal polarization directions are respectively covered, so as to further reduce the blind area.

[0029] In summary, since the present invention can form a virtual diaphragm at the position of the human eye pupil, and there is a virtual aperture diaphragm array in the virtual diaphragm; the diameter of each virtual aperture diaphragm in the virtual aperture diaphragm array is smaller than the diameter of the human eye pupil, thereby restricting the imaging light beam. Therefore, it can increase the depth of field of the image display, so that when the human eye is not correctly focused, it can still see clearly. Based on the above principle, the present invention can obtain the effect of increasing the depth of field in a 3D display device; at the same time, it can also be used as children's myopia correction glasses, and compared with traditional pinhole glasses, the present invention has the technical advantage of a larger viewing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the present invention.

[0031] Figure 2 It is a schematic optical structural diagram of the present invention.

[0032] Figure 3 It is a schematic diagram of the field of view blind area of the present invention.

[0033] Figure 4 It is a schematic optical structural diagram of removing the second diaphragm in the alternative solution of the present invention.

[0034] Reference numerals: 100 - lens; 110 - first diaphragm; 120 - second diaphragm; 130 - third diaphragm; 200 - virtual aperture diaphragm array; 210 - virtual aperture diaphragm; 300 - blind area; 400 - crosstalk light rays.

[0035] It should be understood that the above drawings are only schematic and not drawn to scale. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] Figure 1 A multifunctional glasses provided for this embodiment.

[0037] The multifunctional glasses include a lens 100.

[0038] The lens 100 includes a first diaphragm 110, a second diaphragm 120 and a third diaphragm 130.

[0039] The first diaphragm 110, the second diaphragm 120 and the third diaphragm 130 are placed at intervals from front to back in sequence.

[0040] The first diaphragm 110, the second diaphragm 120 and the third diaphragm 130 all include a small hole array.

[0041] Light rays are incident on the position of the human eye through the small hole array of the first diaphragm 110, the small hole array of the second diaphragm 120 and the small hole array of the third diaphragm 130 in sequence.

[0042] Please refer to Figure 2 , the first diaphragm 110, the second diaphragm 120 and the third diaphragm 130 form an optical combination, and this optical combination forms a virtual aperture diaphragm array 200.

[0043] One of the virtual aperture diaphragms 210 in the virtual aperture diaphragm array 200 is located near the pupil of the human eye.

[0044] The diameter of the virtual aperture diaphragm 210 is smaller than the diameter of the pupil of the human eye, thereby restricting the imaging light beam.

[0045] The pitch of the virtual aperture diaphragm 210 is equal to the diameter of the pupil of the human eye, thereby avoiding ghost images.

[0046] Let the diameter W1 of the small holes of the first diaphragm 110 be 0.25 mm, the pitch P1 of the small holes of the first diaphragm 110 be 1 mm, the pitch P2 of the second diaphragm 120 be 0.8 mm, the diameter W2 of the small holes of the third diaphragm 130 be 0.125 mm, the distance D1 from the first diaphragm 110 to the second diaphragm 120 be 2 mm, the distance D2 from the first diaphragm 110 to the third diaphragm 130 be 3 mm, the distance D3 from the first diaphragm 110 to the virtual diaphragm be 10 mm, the diameter W3 of the virtual aperture diaphragm 210 on the virtual diaphragm be 1 mm, the pitch P3 of the virtual aperture diaphragm 210 be 4 mm, and the diameter of the pupil of the human eye be K = 4 mm. The above relationships are satisfied as follows:

[0047] ;

[0048] ;

[0049] ;

[0050] ;

[0051] W3 < K;

[0052] P3 = K.

[0053] Please refer to Figure 3 , furthermore, the present invention uses the first aperture plate 110, the second aperture plate 120 and the third aperture plate 130 to form an optical combination, which can effectively reduce the blind area. The blind area 300 is located in front of the first aperture plate 110, and its front-back length D4 is 30 mm. D4 satisfies:

[0054] , where W4 = 0.75 mm is the aperture pitch of the first aperture plate 110, and W4 = P1 - W1.

[0055] That is, objects more than 30 mm away from the first aperture plate 110 can be seen completely.

[0056] Furthermore, since all the small holes on the first aperture plate 110 in the present invention can form a virtual aperture diaphragm 210 at the same position through the second aperture plate 120 and the third aperture plate 130, the present invention has a larger viewing angle compared with the traditional mode.

[0057] Figure 4 For another embodiment of the present invention, the second aperture plate 120 is removed, and the number of small holes on the first aperture plate 110 and the third aperture plate 130 is reduced to form a low-cost solution, but its blind area is larger.

[0058] Please compare Figure 4 and Figure 2 , in this embodiment, the number of small holes on the first aperture plate 110 and the third aperture plate 130 is reduced by half so as to form a virtual aperture diaphragm array 200 consistent with Figure 2 . However, since the number of small holes in this embodiment is reduced, it necessarily has a larger visual blind area.

[0059] Furthermore, please refer to Figure 4 , if these small holes are retained, the crosstalk light 400 will irradiate the non-aperture area of the virtual aperture diaphragm array 200, thus damaging the aperture diaphragm.

[0060] In summary, since the present invention can form a virtual diaphragm at the position of the human eye pupil, and the virtual diaphragm has a virtual aperture diaphragm array 200; the diameters of the respective virtual aperture diaphragms 210 in the virtual aperture diaphragm array 200 are smaller than the diameter of the human eye pupil, thereby restricting the imaging light beam. Therefore, it can increase the depth of field of image display, enabling the human eye to still see objects clearly when not in correct focus. Based on the above principle, the present invention can achieve the effect of increasing the depth of field in a 3D display device; at the same time, it can also be used as corrective glasses for children with myopia, and compared with traditional pinhole glasses, the present invention has the technical advantage of a larger viewing angle.

Claims

1. A multifunctional glasses, characterized in that: The multifunctional glasses include lenses; The lenses include a first diaphragm sheet, a second diaphragm sheet and a third diaphragm sheet; The first diaphragm sheet, the second diaphragm sheet and the third diaphragm sheet are sequentially spaced from front to back; The first diaphragm sheet, the second diaphragm sheet and the third diaphragm sheet all include a small hole array; Light sequentially enters the position of the human eye through the small hole array of the first diaphragm sheet, the small hole array of the second diaphragm sheet and the small hole array of the third diaphragm sheet; The first diaphragm sheet, the second diaphragm sheet and the third diaphragm sheet form an optical combination, and the optical combination forms a virtual aperture diaphragm array; One of the virtual aperture diaphragms in the virtual aperture diaphragm array is located near the pupil of the human eye; The diameter of the virtual aperture diaphragm is smaller than the diameter of the human eye pupil, thereby restricting the imaging light beam; Let the pitch of the small holes of the first diaphragm sheet be P1, the pitch of the second diaphragm sheet be P2, the distance from the first diaphragm sheet to the second diaphragm sheet be D1, the distance from the first diaphragm sheet to the third diaphragm sheet be D2, the distance from the first diaphragm sheet to the virtual diaphragm sheet be D3, the pitch of the virtual aperture diaphragm be P3, the diameter of the virtual aperture diaphragm on the virtual diaphragm sheet be W3, and the diameter of the human eye pupil be K. The above relationship should satisfy: ； ； W3 < K.

2. The multifunctional glasses according to claim 1, characterized in that: The pitch of the virtual aperture diaphragm is greater than or equal to the diameter of the human eye pupil, thereby avoiding double images.

3. The multifunctional glasses according to claim 1, characterized in that: Let the diameter of the small holes of the first diaphragm sheet be W1, and the diameter of the small holes of the third diaphragm sheet be W2. The above relationship should satisfy: ； 。 4. The multifunctional glasses according to claim 3, characterized in that: The first diaphragm sheet, the second diaphragm sheet and the third diaphragm sheet form an optical combination and have a blind area; Let the blind area be located in front of the first diaphragm sheet, and its front and back length be D4, and D4 satisfies: , where W4 is the small hole spacing of the first diaphragm, and W4 = P1 - W1.

5. The multifunctional glasses according to claim 1, characterized in that: Remove the second diaphragm sheet and reduce the number of small holes in the first diaphragm sheet and the third diaphragm sheet to form a low-cost solution.

6. The multifunctional glasses according to claim 1, characterized in that: Remove the third diaphragm sheet and reduce the number of small holes in the first diaphragm sheet and the second diaphragm sheet to form a low-cost solution.

7. The multifunctional glasses according to claim 1, characterized in that: Among the first diaphragm sheet, the second diaphragm sheet and the third diaphragm sheet, the small holes on any diaphragm sheet are replaced with slits, and the slit width parameter is the same as the small hole diameter parameter.

8. The multifunctional glasses according to claim 1, characterized in that: On two adjacent small holes on any diaphragm sheet, polarizers with orthogonal polarization directions are respectively covered.

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