CN210348069U - One-screen binocular head-mounted display optical system and equipment - Google Patents
One-screen binocular head-mounted display optical system and equipment Download PDFInfo
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- CN210348069U CN210348069U CN201921644935.8U CN201921644935U CN210348069U CN 210348069 U CN210348069 U CN 210348069U CN 201921644935 U CN201921644935 U CN 201921644935U CN 210348069 U CN210348069 U CN 210348069U
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Abstract
The utility model relates to a two mesh formula head-mounted display optical system and equipment of a screen, the traditional objective of this optical system application, the formation of image principle of eyepiece, new different carry out reasonable buildding, constitute a neotype head-mounted display optical path structure, through rational application second lens group and half-transparent half-reflection deflection optics, carry out and build the method of totally dissimilarity with traditional eyepiece structure, creatively with whole head-mounted display ground optical system carry out objective, buildding eyepiece, guarantee high-quality imaging effect on the one hand, on the other hand increases the overall length of whole optical structure, reach and traditional two eyepiece optical system, two show that to become two optical system of difference totally a little, the structure of single little display screen. And simultaneously, the utility model discloses a show light path is worn to a screen double-purpose mesh formula, also greatly reduced the difference of double screen at the eyes in the vision on wear to show product and similar product, further improved the user experience who wears to show the product.
Description
Technical Field
The utility model relates to a wear display device optical system, more specifically say, relate to a two mesh formulas of a screen wear display optical system and equipment.
Background
With the continuous development of intelligent head-mounted devices, the demands of the consumer market on head-mounted and similar products are continuously increased, the bottleneck of the traditional optical structure is increasingly obvious, and the sound generated by the novel structure is continuously strengthened.
Present optical structure image quality is not high, there is distortion and angle of vision not big enough, the utility model discloses just utilize on traditional two-screen binoculars optical structure basis, carry out the design and transformation with great courage creativity, guarantee high-quality image effect on the one hand, on the other hand increases whole optical structure's overall length, reaches the structure of two optical system, the single little display screen that becomes totally different ground with traditional binoculars optical system, two little display. And simultaneously, the utility model discloses also greatly reduced the difference of double screen in the vision of both eyes on wearing display product and similar product, further improved the user experience who wears display product.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in that current optical structure image quality is not high, there is distortion and angle of vision not big enough, to the above-mentioned defect of prior art, provides a two mesh formula head-mounted display optical system of a screen and equipment.
The utility model provides a technical scheme that its technical problem adopted is:
the one-screen binocular head-mounted display optical system comprises a first lens group, a total reflection deflection optical device, a second lens group and a semi-transmission and semi-reflection deflection optical device which are sequentially arranged from the observation side of human eyes to a micro display device along the direction of an optical axis; the first lens group, the total reflection deflection optical device, the second lens group and the semi-transparent semi-reflection deflection optical device are all symmetrically arranged along the central axis of the micro display device; the first lens group, the total reflection deflection optical device, the second lens group, the semi-transparent semi-reflective deflection optical device and the micro display device which are positioned on one side of the micro display device form a left eye light path, and the first lens group, the total reflection deflection optical device, the second lens group and the semi-transparent semi-reflective deflection optical device which are positioned on the other side of the micro display device form a right eye light path;
the distance between the optical surface closest to the human eye in the first lens group and the optical surface farthest from the human eye in the first lens group is W1, the distance between the optical surface closest to the human eye in the second lens group and the optical surface farthest from the human eye in the second lens group is W2, and W1 and W2 satisfy the following relational expressions (1) and (2):
0<W1<60 (1)；
0<W2<32 (2)。
further, a distance between an optical surface of the first lens group on a side closest to the second lens group and an optical surface of the second lens group on a side closest to the first lens group is D1, a distance between an optical surface of the second lens group on a side closest to the micro display device and the micro display device is D2, and D1 and D2 satisfy the following relational expressions (3) and (4):
10<D1<60 (3)；
15<D2 (4)。
furthermore, the included angle between the optical surface of the total reflection deflection optical device and the optical axis is theta 1; the included angle between the optical surface of the semi-transmitting and semi-reflecting deflection optical device and the optical axis is theta 2, and the relation between theta 1 and theta 2 satisfies the following relational expression (5):
θ1+θ2＝90° (5)。
further, a focal length of the first lens group is F1, a focal length of the second lens group is F2, an overall focal length of the optical system is F, and F1, F2 and F satisfy the following relations (6), (7):
-2<F1/F<0 (6)；
F2/F<0 (7)。
furthermore, the optical materials of the optical lenses in the first lens group and the second lens group are plastic, resin or glass materials.
Further, the optical surfaces of the optical lenses in the first lens group and the second lens group are optical spherical surface type, aspheric surface type, fresnel surface type or binary surface type.
Furthermore, the fresnel surface type and the binary surface type adopted by the optical surfaces in the first lens group and the second lens group are a plane substrate, a spherical substrate or an aspheric substrate.
The utility model provides a two mesh formula head-mounted display optical equipment on screen, including miniature display device, still include as in the aforesaid any one optical system, with the picture that miniature display device shows with high image quality, low distortion, the characteristics of big angle of vision are projected in the people's eye.
Further, the micro display device is an organic electroluminescent device or a transmissive liquid crystal display.
The beneficial effects of the utility model reside in that: by reasonably utilizing the second lens group and the semi-transparent and semi-reflective deflection optical device, a method completely different from the traditional eyepiece structure is built, and the whole head-mounted display optical system is innovatively built with the objective lens and the eyepiece, so that on one hand, a high-quality imaging effect is ensured, on the other hand, the total length of the whole optical system is increased, and the structure of a double-optical system and a single-micro display screen which are completely different from the traditional binocular optical system and the double-micro display is achieved. And simultaneously, the utility model discloses a two mesh formula head-mounted display optical systems of a screen, also greatly reduced the difference of two screens in the vision of both eyes on wearing display product and similar product, further improved the user experience who wears display product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:
fig. 1 is a schematic structural diagram of a one-screen binocular head-mounted display optical system in the present invention;
fig. 2 is a schematic view of a monocular configuration of a one-screen binocular head-mounted display optical system according to a first embodiment of the present invention;
fig. 3 is a schematic view of a binocular structure of a one-screen binocular head-mounted display optical system according to a first embodiment of the present invention;
fig. 4 is a schematic diagram of diffuse spots of a one-screen binocular head-mounted display optical system according to a first embodiment of the present invention;
fig. 5 is a schematic diagram illustrating distortion of a one-screen binocular head-mounted display optical system according to a first embodiment of the present invention;
fig. 6 is a schematic diagram of a transfer function (MTF) of a one-screen binocular head-mounted display optical system according to a first embodiment of the present invention;
fig. 7 is a schematic view of a monocular configuration of a one-screen binocular head-mounted display optical system according to a second embodiment of the present invention;
fig. 8 is a schematic view of a binocular structure of a one-screen binocular head-mounted display optical system according to a second embodiment of the present invention;
fig. 9 is a schematic diagram of a diffuse spot of a one-screen binocular head-mounted display optical system according to a second embodiment of the present invention;
fig. 10 is a schematic diagram of distortion of a one-screen binocular head-mounted display optical system according to a second embodiment of the present invention;
fig. 11 is a schematic diagram of a transfer function (MTF) of a one-screen binocular head-mounted display optical system according to a second embodiment of the present invention;
fig. 12 is a schematic view of a monocular configuration of a one-screen binocular head-mounted display optical system according to a third embodiment of the present invention;
fig. 13 is a schematic view of a binocular structure of a one-screen binocular head-mounted display optical system according to a third embodiment of the present invention;
fig. 14 is a schematic diagram of a diffuse spot of a one-screen binocular head-mounted display optical system according to a third embodiment of the present invention;
fig. 15 is a schematic diagram of distortion of a one-screen binocular head-mounted display optical system according to a third embodiment of the present invention;
fig. 16 is a schematic view of a one-screen binocular head-mounted display optical system transfer function (MTF) according to a third embodiment of the present invention;
fig. 17 is a schematic view of a monocular configuration of a one-screen binocular head-mounted display optical system according to a fourth embodiment of the present invention;
fig. 18 is a schematic view of a binocular structure of a one-screen binocular head-mounted display optical system according to a fourth embodiment of the present invention;
fig. 19 is a schematic diagram of a diffuse spot of a one-screen binocular head-mounted display optical system according to a fourth embodiment of the present invention;
fig. 20 is a schematic diagram of distortion of a one-screen binocular head-mounted display optical system according to a fourth embodiment of the present invention;
fig. 21 is a schematic view of a one-screen binocular head-mounted display optical system transfer function (MTF) according to a fourth embodiment of the present invention;
fig. 22 is a schematic view of a binocular structure of a one-screen binocular head-mounted display optical system according to a first embodiment of the present invention;
fig. 23 is a schematic view of a binocular structure of a one-screen binocular head-mounted display optical system according to a fourth embodiment of the present invention;
fig. 24 is a schematic view of a binocular structure of a one-screen binocular head-mounted display optical system according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
A one-screen binocular head-mounted display optical system is constructed, and comprises a first lens group A1, a1 ', total reflection deflection optical devices L1 and L1', a second lens group A2 and A2 'and semi-transparent and semi-reflective deflection optical devices L2 and L2' which are sequentially arranged along the direction of an optical axis from the observation side of human eyes to a micro display device; the first lens group A1, A1 ', the total reflection deflection optical devices L1 and L1', the second lens group A2 and A2 'and the semi-transparent and semi-reflective deflection optical devices L2 and L2' are all symmetrically arranged along the central axis of the micro display device; the first lens group A1, the total reflection deflection optical device L1, the second lens group A2, the semi-transparent and semi-reflective deflection optical device L2 and the micro display device on one side of the micro display device form a left eye optical path, and the first lens group A1 ', the total reflection deflection optical device L1', the second lens group A2 'and the semi-transparent and semi-reflective deflection optical device L2' on the other side of the micro display device form a right eye optical path;
the first lens group at least comprises an optical lens; the second lens group at least comprises an optical lens; the distance between the optical surface closest to the human eye in the first lens group and the optical surface farthest from the human eye in the first lens group is W1, the distance between the optical surface closest to the human eye in the second lens group and the optical surface farthest from the human eye in the second lens group is W2, and W1 and W2 satisfy the following relational expressions (1) and (2):
0<W1<60 (1)；
0<W2<32 (2)；
that is, W1 values may be taken to be 2, 5, 15, 25, 37, 44, 51, 57, 60, etc.;
w2 values may be taken to be 3.5, 7.3, 13, 15, 17, 23, 25, 31, 32, etc.
In the embodiment, the second lens group and the semitransparent and semi-reflective deflection optical device are reasonably applied to the construction of a completely different method from the traditional eyepiece structure, and the whole head-mounted display ground optical system is innovatively constructed with the objective lens and the eyepiece, so that on one hand, a high-quality imaging effect is ensured, on the other hand, the total length of the whole optical system is increased, and the structure of a double-optical system and a single-micro display screen which are completely different from the traditional binocular optical system and the double-micro display screen is achieved.
In a further embodiment, a distance between an optical surface of the first lens group a1, a1 ' closest to the side of the second lens group a2, a2 ' and an optical surface of the second lens group a2, a2 ' closest to the side of the first lens group a1, a1 ' is D1, a distance between an optical surface of the second lens group a2, a2 ' closest to the side of the micro display device and the micro display device is D2, and D1, D2 satisfy the following relations (3), (4):
10<D1<60 (3)；
15<D2 (4)；
that is, the value of D1 may be taken to be 10, 11, 13, 15, 21, 25, 33, 45, 47, 52, 58, 60, etc.;
the D2 values may be taken to be 15, 15.5, 17, 18, 25, 39, 53, 66, 75, 82, etc.
In a further embodiment, the optical surfaces of the total reflection deflection optics L1, L1' have an angle θ 1 with the optical axis; the included angle between the optical surface of the transflective optical devices L2 and L2' and the optical axis is θ 2, and the relationship between θ 1 and θ 2 satisfies the following relation (5):
θ1+θ2＝90° (5)。
in a further embodiment, the focal length of the first lens group a1, a1 'is F1, the focal length of the second lens group a2, a 2' is F2, the total optical focal length is F, and F1, F2 and F satisfy the following relations (6), (7):
-2<F1/F<0 (6)；
F2/F<0 (7)；
that is, the F1/F value can be-2, -1.998, -1.543, -1.334, -1.235, -0.983, -0.834, -0.342, etc.;
F2/F values may be taken to be-0.342, -1.983, -8.543, -11.998, -13.452, -25.567, and so forth.
In a further embodiment, the optical materials used for the optical lenses in the first lens group a1, a1 'and the second lens group a2, a 2' are plastic, resin or glass.
In further embodiments, the optical surfaces of the optical lenses in the first lens group a1, a1 'and the second lens group a2, a 2' are optical spherical surface type, aspherical surface type, fresnel surface type or binary surface type.
In further embodiments, the fresnel surface type and the binary surface type used for the optical surfaces in the first lens group a1, a1 'and the second lens group a2, a 2' are planar substrates, spherical substrates, or aspheric substrates. The present invention will be further described with reference to the following detailed description.
Example one
The structural data of example one is shown in the following table:
table 1 structural data of implementation one
Fig. 2 and 3 are schematic diagrams of a 2D optical structure diagram and an actual product construction diagram of the first embodiment, as shown in fig. 2, the first lens group a1, a1 ', at least two total reflection deflection optical devices L1, L1 ', the second lens group a2, a2 ', and at least two transflective optical devices L2, L2 ' are sequentially arranged along an optical axis direction from a human eye observation side to a micro display device, wherein the total reflection deflection optical devices L1, L1 ' are located between the first lens group a1, a1 ' and the second lens group a2, a2 ', and the transflective deflection optical devices L2, L2 ' are located between the second lens group a2, a2 ' and the micro display device. The structure is characterized in that the first lens groups A1 and A1 'adopt the traditional optical spherical surface and even aspheric optical surface, the second lens groups A2 and A2' adopt the optical spherical surface and even aspheric surface and the 17 th optical surface is a binary optical surface, and the type parameters of the binary optical surface are shown in the following table:
TABLE 2 binary surface type parameters
The first eyepiece group A1, A1 'is composed of five optical lenses, and the second eyepiece group A2, A2' is composed of two optical lenses. As shown in fig. 2 and 21, the head-mounted optical system realizes an immersive effect by a piece of micro display device, and the two structures are mainly distinguished in that the included angles between the optical surfaces of the total reflection deflection optical devices L1 and L1 'and the transflective deflection optical devices L2 and L2' and the optical axis are respectively theta 1, theta 2, and the sizes of theta 1 and theta 2 are different, fig. 3 is 45 degrees, and fig. 22 is 32 degrees and 58 degrees, so that the sum of theta 1 and theta 2 in a single structure is 90 degrees.
Fig. 4, fig. 5, and fig. 6 are schematic diagrams of a diffuse speckle array, a distortion diagram, and a transfer function MTF of the optical system according to the first embodiment, respectively, and it can be seen from the diagrams that, while ensuring a large field angle (44 degrees), the diffuse speckle radius of each field ray on an image plane (display device) is small and uniform, the diffuse speckle misalignment degree formed by focusing different wavelength rays on the same field is low, the resolution of each field of the optical transfer function MTF reaches 0.95 or more at a frequency of 10, the aberration of the optical system is well corrected, and a high-definition, distortion-free, uniform, high-optical-performance display image of a whole full-frame can be observed through the eyepiece optical system, so as to achieve a visual experience of high presence.
Example two
The structural data of example two is shown in the following table:
table 3 implementation of two structural data
Fig. 7 is a schematic diagram of a 2D optical structure diagram and an actual product construction diagram of the second embodiment, and as shown in fig. 7, the second embodiment is composed of a first lens group a1, a1 ', at least two total reflection deflection optical devices L1, L1 ', a second lens group a2, a2 ', and at least two semi-transparent and semi-reflective deflection optical devices L2, L2 ', which are sequentially arranged along an optical axis direction from a human eye observation side to a micro display device, wherein the total reflection deflection optical devices L1, L1 ' are located between the first lens group a1, a1 ' and the second semi-transparent lens group a2, a2 ', and the semi-reflective deflection optical devices L2, L2 ' are located between the second lens group a2, a2 ' and the micro display device. The structure is characterized in that the first lens groups A1 and A1 'adopt the traditional optical spherical surface, even-order aspheric surface and Fresnel optical surface, the second lens groups A2 and A2' adopt the optical spherical surface, the even-order aspheric surface and binary optical surface, and the Fresnel surface of the 6 th optical surface and the binary surface type parameters of the 14 th optical surface are shown in the following table:
TABLE 4 Fresnel surface and binary surface type parameters
And the first lens group A1, A1 'is composed of four optical lenses, and the second lens group A2, A2' is composed of one optical lens. As shown in fig. 8, the head-mounted optical system realizes an immersive effect by a piece of micro display device.
Fig. 9, fig. 10, and fig. 11 are schematic diagrams of a diffuse speckle array, a distortion diagram, and a transfer function MTF of the optical system of the second embodiment, respectively, and it can be seen from the diagrams that, while ensuring a large field angle (44 degrees), the diffuse speckle radius of each field ray on an image plane (display device) is small and uniform, the speckle misalignment degree formed by focusing different wavelength rays on the same field is low, the resolution of each field of the optical transfer function MTF reaches above 0.95 at a frequency of 10, the aberration of the optical system is well corrected, and a high-definition, distortion-free, uniform, high-optical-performance display image of a whole full-frame can be observed through the eyepiece optical system, so as to achieve a high-presence visual experience.
EXAMPLE III
The structural data of example three is shown in the following table:
table 5 implementation of three structural data
Fig. 12 is a schematic diagram of a 2D optical structure diagram and an actual product construction diagram of a third embodiment, and as shown in fig. 12, the 2D optical structure diagram and the actual product construction diagram are composed of a first lens group a1, a1 ', at least two total reflection deflection optical devices L1, L1 ', a second lens group a2, a2 ', and at least two transflective deflection optical devices L2, L2 ', which are sequentially arranged along an optical axis direction from a human eye observation side to a micro display device, wherein the total reflection deflection optical devices L1, L1 ' are located between the first lens group a1, a1 ' and the second lens group a2, a2 ', and the transflective deflection optical devices L2, L2 ' are located between the second lens group a2, a2 ' and the micro display device. The structure is characterized in that the first lens groups A1 and A1 'adopt the traditional optical spherical surface and even aspheric optical surface, the second lens groups A2 and A2' adopt the optical spherical surface and even aspheric surface, the 16 th optical surface is a binary optical surface, and the type parameters of the binary optical surface are shown in the following table:
TABLE 6 binary surface type parameters
| Quartic coefficient of binary surface basal plane | -4.121181e-05 |
| Coefficient of sextic term of base surface of binary surface | 8.6352e-07 |
| Eight-order coefficient of binary surface basal plane | 3.9390415e-09 |
| Normalized radius of binary surface | 50 |
| Coefficient of quadratic term of binary surface | -69549.376 |
| Quartic coefficient of binary surface | 601342.37 |
| Coefficient of sextic term of binary surface | -15731497 |
And the first lens group A1, A1 'is composed of five lenses, and the second lens group A2, A2' is composed of two lenses. As shown in fig. 13, the head-mounted optical system realizes an immersive effect by a piece of micro display device, the optical surfaces of the total reflection deflection optical devices L1 and L1 'and the transflective deflection optical devices L2 and L2' respectively form angles θ 1 and θ 2, θ 1 and θ 2 are 45 degrees, and the sum of θ 1 and θ 2 in the structure is 90 degrees.
Fig. 14, fig. 15, and fig. 16 are schematic diagrams of a diffuse speckle array, a distortion diagram, and a transfer function MTF of the optical system according to the third embodiment, respectively, and it can be seen from the diagrams that, while a large field angle (44 degrees) is ensured, the radius of a diffuse speckle of each field ray on an image plane (display device) is small and uniform, the degree of speckle misalignment formed by focusing different wavelength rays on the same field is low, the resolution of each field of the optical transfer function MTF at a frequency of 10 is up to 0.55, aberrations of the optical system are well corrected, and a display image with high overall full-picture definition, no distortion, uniformity, and high optical performance can be observed through the eyepiece optical system, so as to achieve a visual experience of high presence.
Example four
The structural data for example four is shown in the following table:
table 7 implementation of four structure data
Fig. 17 is a schematic diagram of a 2D optical structure diagram and an actual product construction diagram of the fourth embodiment, and as shown in fig. 17, the 2D optical structure diagram and the actual product construction diagram are composed of a first lens group a1, a1 ', at least two total reflection deflection optical devices L1, L1 ', a second lens group a2, a2 ', and at least two semi-transparent and semi-reflective deflection optical devices L2, L2 ', which are sequentially arranged along an optical axis direction from a human eye observation side to a micro display device, wherein the total reflection deflection optical devices L1, L1 ' are located between the first lens group a1, a1 ' and the second semi-transparent lens group a2, a2 ', and the semi-reflective deflection optical devices L2, L2 ' are located between the second lens group a2, a2 ' and the micro display device. The structure is characterized in that the first lens group A1 and A1 'and the second lens group A2 and A2' adopt traditional optical spherical surfaces and even-order aspheric optical surfaces, the first lens group A1 and A1 'are composed of four lenses, and the second lens group A2 and A2' are composed of three lenses. As shown in fig. 17, 22, and 23, the head-mounted optical system realizes an immersive effect by a piece of micro display screen (IMG), angles between optical surfaces of the total reflection deflecting optical devices L1 and L1 'and the transflective deflecting optical devices L2 and L2' and an optical axis are θ 1 and θ 2, respectively, 60 and 30 degrees in fig. 18 and 24, respectively, and 45 degrees in fig. 22, and a sum of θ 1 and θ 2 in each structure is 90 degrees. The two structures of fig. 18 and 24 differ from each other in the position of the micro display (IMG).
Fig. 19, fig. 20, and fig. 21 are schematic diagrams of a diffuse speckle array, a distortion diagram, and a transfer function MTF of the optical system according to the fourth embodiment, respectively, and it can be seen from the diagrams that, while ensuring a large field angle (40 degrees), the diffuse speckle radius of each field ray on an image plane (display device) is small and uniform, the speckle misalignment degree formed by focusing different wavelength rays on the same field is low, the resolution of each field of the optical transfer function MTF reaches 0.55 or more at a frequency of 10, the aberration of the optical system is well corrected, and a high-definition, distortion-free, uniform, high-optical-performance display image of the whole full-frame can be observed through the eyepiece optical system, so as to achieve the visual experience of high presence.
In another embodiment, the present invention provides a binocular head-mounted display optical device with one screen, which comprises a micro display device and an optical system as described above, wherein the image displayed by the micro display device is projected to human eyes with high image quality, low distortion and large field angle; the micro display device is a position between two eyes which is vertical to the optical axis space of the eyepiece, and can also be point-symmetric along the intersection point o of the half-transmitting and half-reflecting deflection optical devices L2 and L2'; the method for building the whole head-mounted display ground optical system completely different from the traditional eyepiece structure is carried out by reasonably utilizing the second lens group and the semi-transparent semi-reflective deflection optical device, and the whole head-mounted display ground optical system is creatively built with the objective lens and the eyepiece, so that on one hand, the high-quality imaging effect is ensured, on the other hand, the total length of the whole optical structure is increased, and the structure of a double-optical system and a single-micro display screen which are completely different from the traditional binocular optical system and the double-micro display is achieved.
In a further embodiment, the micro display device is an organic electroluminescent device or a transmissive liquid crystal display.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (9)
1. The utility model provides a two mesh formula head-mounted display optical systems of screen which characterized in that: the micro-display device comprises a first lens group, a total reflection deflection optical device, a second lens group and a semi-transparent semi-reflective deflection optical device which are sequentially arranged from an observation side of a human eye to the micro-display device along the optical axis direction; the first lens group, the total reflection deflection optical device, the second lens group and the semi-transparent semi-reflection deflection optical device are all symmetrically arranged along the central axis of the micro display device; the first lens group, the total reflection deflection optical device, the second lens group, the semi-transparent semi-reflective deflection optical device and the micro display device which are positioned on one side of the micro display device form a left eye light path, and the first lens group, the total reflection deflection optical device, the second lens group and the semi-transparent semi-reflective deflection optical device which are positioned on the other side of the micro display device form a right eye light path;
the distance between the optical surface closest to the human eye in the first lens group and the optical surface farthest from the human eye in the first lens group is W1, the distance between the optical surface closest to the human eye in the second lens group and the optical surface farthest from the human eye in the second lens group is W2, and W1 and W2 satisfy the following relational expressions (1) and (2):
0<W1<60 (1)；
0<W2<32 (2)。
2. the optical system according to claim 1, wherein a distance between an optical surface of the first lens group on a side closest to the second lens group and an optical surface of the second lens group on a side closest to the first lens group is D1, a distance between an optical surface of the second lens group on a side closest to the micro display device and the micro display device is D2, and D1 and D2 satisfy the following relations (3) and (4):
10<D1<60 (3)；
15<D2 (4)。
3. the optical system according to claim 1, wherein the optical surface of the total reflection deflection optical device has an angle θ 1 with the optical axis; the included angle between the optical surface of the semi-transmitting and semi-reflecting deflection optical device and the optical axis is theta 2, and the relation between theta 1 and theta 2 satisfies the following relational expression (5):
θ1+θ2＝90° (5)。
4. the optical system according to claim 1, wherein the focal length of the first lens group is F1, the focal length of the second lens group is F2, the total focal length of the optical system is F, and F1, F2 and F satisfy the following relations (6), (7):
-2<F1/F<0 (6)；
F2/F<0 (7)。
5. the optical system of claim 1, wherein the optical materials of the optical lenses in the first lens group and the second lens group are plastic, resin or glass.
6. The optical system of claim 1, wherein the optical surfaces of the optical lenses in the first lens group and the second lens group are optical spherical surface type, aspheric surface type, fresnel surface type or binary surface type.
7. The optical system according to claim 6, wherein the Fresnel surface type and the binary surface type adopted by the optical surfaces in the first lens group and the second lens group are planar substrates, spherical substrates or aspheric substrates.
8. A one-screen binocular head-mounted display optical apparatus comprising a micro display device, characterized by further comprising the optical system as claimed in claims 1 to 7, for projecting a picture displayed by the micro display device to human eyes with high image quality, low distortion and large field angle.
9. The optical apparatus of claim 8, wherein the micro display device is an organic electroluminescent device or a transmissive liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921644935.8U CN210348069U (en) | 2019-09-29 | 2019-09-29 | One-screen binocular head-mounted display optical system and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921644935.8U CN210348069U (en) | 2019-09-29 | 2019-09-29 | One-screen binocular head-mounted display optical system and equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110596898A (en) * | 2019-09-29 | 2019-12-20 | 深圳纳德光学有限公司 | One-screen binocular head-mounted display optical system and equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596898A (en) * | 2019-09-29 | 2019-12-20 | 深圳纳德光学有限公司 | One-screen binocular head-mounted display optical system and equipment |
| CN110596898B (en) * | 2019-09-29 | 2024-03-12 | 深圳纳德光学有限公司 | One-screen binocular head-mounted display optical system and device |
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