CN207780379U - One kind wearing display optical system and wears display equipment - Google Patents
One kind wearing display optical system and wears display equipment Download PDFInfo
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- CN207780379U CN207780379U CN201820192046.1U CN201820192046U CN207780379U CN 207780379 U CN207780379 U CN 207780379U CN 201820192046 U CN201820192046 U CN 201820192046U CN 207780379 U CN207780379 U CN 207780379U
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Abstract
The utility model belongs to intelligence wearing technical field of electronic equipment, one kind is provided to wear display optical system and wear display equipment, it includes the image generation unit set gradually along light path to wear display optical system, first lens unit, first optical unit and the second optical unit, wherein image generation unit is for generating light beam, first lens unit for transmitted light beam and is adjusted the direction of propagation of light beam, first optical unit is for being reflected and being transmitted to light beam, second optical unit is for reflecting light beam, the light beam reflected through the second optical unit returns to the first optical unit, and transmit laggard access customer eyes through the first optical unit；Further include for stopping that environment stray light reaches the light-baffling device of the first optical unit, light-baffling device is set to the first optical unit backwards to the side of the first lens unit；Light-baffling device is set, environment stray light is avoided to wear the light beam in display optical system, improves image quality, improves user experience.
Description
Technical field
It is more specifically to be related to one kind wearing display that the utility model, which belongs to intelligence wearing technical field of electronic equipment,
Optical system and wear display equipment.
Background technology
With the continuous development of science and technology, more and more display equipment be widely used in daily life with
And in work, huge facility is brought for daily life and work, becomes the indispensable weight of current people
Want tool.Display technology is wherein worn as a kind of novel skill being combined by multiple fields such as optics, electronics, software interactives
The development that art is also advanced by leaps and bounds.
Miniscope and optical system in head-mounted display (HMD) project the image from miniscope
Eyes of user simultaneously allows user to see real world.Head-mounted display has the application of application and the leisure of many practicabilities,
Such as aerospace application field allows pilot to see important flight control information without making their eyes leave
Flight path；It includes that the tactics of map and thermal imaging are shown that public safety field, which is applied,；The application of other field further includes video
Game, communications and transportation and radio communication etc..
However, since the light outside allowing enters in head-mounted display, some stray lights can also enter optics
In imaging system, when eyes of these stray lights into access customer, user can be appreciated that the image information entrained by these stray lights,
And these information are not what user wished to, therefore user experience can be influenced.
The above deficiency, has much room for improvement.
Utility model content
The purpose of this utility model is to provide one kind wearing display optical system, existing in the prior art miscellaneous to solve
Light, which enters, wears rear the technical issues of influencing image quality in display equipment.
To achieve the above object, the technical solution adopted in the utility model is：One kind is provided and wears display optical system, is wrapped
It includes and sets gradually along light path：
Image generation unit, the light beam for generating and emitting carrying image information；
First lens unit for transmitted light beam and adjusts the direction of propagation of light beam；
First optical unit, for being reflected light beam and being transmitted, the central shaft of first optical unit with it is described
The central shaft of first lens unit is at the first default angle；
Second optical unit, for reflecting light beam, the central shaft of second optical unit is saturating with described first
The central shaft of mirror unit is at the second default angle；
Light beam returns to first optical unit after second optical unit reflection, and through first optical unit
Transmit the eyes of laggard access customer；
The display optical system of wearing further includes：
Light-baffling device is set to first optical unit backwards to the side of first lens unit, for stopping environment
Stray light reaches first optical unit.
Further, the light-baffling device includes fixed part for connecting first optical unit and for being in the light
Light-blocking part, the opposite sides of the fixed part is equipped with interconnecting piece, and the light-blocking part is connect with the interconnecting piece；
The size of the light-blocking part is not less than projected area of first optical unit on the light-baffling device direction.
Further, the described first default angle is 45 °, and the second default angle is 90 °；
It is micro-display that described image, which generates unit, and the micro-display is coaxial with first lens unit；
First lens unit includes at least one lens；
Direction where the central shaft of second optical unit is X-direction, where the central shaft of the micro-display
Direction is Y-direction, and the X-direction is mutually perpendicular to the Y-direction, the central shaft of the micro-display and the second optics list
The central axis of member intersects at first optical unit.
Further, first lens unit includes the first lens and the second lens set gradually along light path, described
First lens and second lens are coaxial and coaxial with described image generation unit；
The central shaft of first lens and the angle of the Y-direction are not more than 3 °, the central shaft of second lens with
The angle of the Y-direction is not more than 3 °；
The offset of first lens in the X direction is no more than 2 millimeters, and the offset of first lens in the Y direction is not
More than 2 millimeters；
The offset of second lens in the X direction is no more than 2 millimeters, and the offset of second lens in the Y direction is not
More than 2 millimeters.
Further, first optical unit includes the first optical mirror slip, and first optical mirror slip is towards described the
The surface of one lens unit is equipped with the first part reflective semitransparent film, and first optical mirror slip is backwards to the surface of first lens unit
Equipped with the first anti-reflection film；
Alternatively,
First optical mirror slip is equipped with the first anti-reflection film, first optics towards the surface of first lens unit
Eyeglass is equipped with the first part reflective semitransparent film backwards to the surface of first lens unit.
Further, the central shaft of first optical mirror slip and the angle of the Y-direction are not more than 5 °；
First optical mirror slip is non-planar mirror, and the offset of first optical mirror slip in the X direction is no more than 1 milli
Rice, the offset of first optical mirror slip in the Y direction are no more than 1 millimeter.
Further, second optical unit includes the second optical mirror slip, and second optical mirror slip is towards described the
The surface of one optical unit is equipped with the second part reflective semitransparent film, and second optical mirror slip is backwards to the surface of first optical unit
Equipped with the second anti-reflection film；
Alternatively,
Second optical mirror slip is equipped with the second anti-reflection film, second optics towards the surface of first optical unit
Eyeglass is equipped with the second part reflective semitransparent film backwards to the surface of first optical unit.
Further, the central shaft of the central shaft and the micro-display of second optical mirror slip is perpendicular, and described
The central shaft of two optical mirror slips and the angle of the Y-direction are not more than 0.5 °；
The offset of second optical mirror slip in the X direction is no more than 0.5 millimeter, and second optical mirror slip 41 is in the side Y
Upward offset is no more than 0.5 millimeter.
Further, second optical mirror slip is uniform thickness optical mirror slip；
Second optical mirror slip is resin lens, and the surface of second optical mirror slip is coated with photochromic coating；
Alternatively,
Second optical mirror slip is resin lens, and the surface penetration of second optical mirror slip has photochromic material；
Alternatively,
Second optical mirror slip is glass lens, and photochromic material is evenly distributed in second optical mirror slip.
The purpose of this utility model, which also resides in, to be provided one kind and wears display equipment, including above-mentioned wears display optical system
System.
A kind of advantageous effect for wearing display optical system provided by the utility model is：Due in the first optical unit
It is equipped with light-baffling device backwards to the side of the first lens unit, so that environment spurious rays can not under the blocking of light-baffling device
The first optical unit is reached, and then the eyes of user can not be reached, avoids environment spurious rays to wearing display optical system
In light beam influence, ensured the image quality for wearing display optical system；Simultaneously because spurious rays can not reach first
Optical unit, to enter in the eyes of user, therefore user not can be appreciated that entrained by stray light in use
Image information (such as ground, clothes, trousers etc.), and can only see the figure by the laggard access customer eyes of the first optical unit
Picture effectively improves user experience.
Description of the drawings
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram for wearing display optical system that the utility model embodiment provides；
Fig. 2 is the light channel structure schematic diagram for wearing display optical system that the utility model embodiment provides；
Fig. 3 is the partial structural diagram one for wearing display optical system that the utility model embodiment provides；
Fig. 4 is the partial structural diagram two for wearing display optical system that the utility model embodiment provides；
Fig. 5 is the partial structural diagram three for wearing display optical system that the utility model embodiment provides；
Fig. 6 is the structural schematic diagram for the light-baffling device for wearing display optical system that the utility model embodiment provides；
Fig. 7 is the detonation configuration signal for the light-baffling device for wearing display optical system that the utility model embodiment provides
Figure；
Fig. 8 is the reference axis schematic diagram for wearing display optical system that the utility model embodiment provides；
Fig. 9 is the structural representation for the first optical unit for wearing display optical system that the utility model embodiment provides
Figure；
Figure 10 is the structural representation for the second optical unit for wearing display optical system that the utility model embodiment provides
Figure；
Figure 11 is the partial structural diagram four for wearing display optical system that the utility model embodiment provides；
Figure 12 is the partial structural diagram five for wearing display optical system that the utility model embodiment provides；
Figure 13 is the MTF curve figure for each visual field for wearing display optical system that the utility model embodiment provides.
Wherein, each reference numeral in figure：
1- image generation units；The first lens units of 2-；
The first lens of 21-；The second lens of 22-；
The first optical units of 3-；The first optical mirror slips of 31-；
The first upper surfaces 311-；The first lower surfaces 312-；
The second optical units of 4-；The second optical mirror slips of 41-；
The second upper surfaces 411-；The second lower surfaces 412-；
5- light-baffling devices；51- fixed parts；
The first holding parts of 510-；511- fixed part through-holes；
52- light-blocking parts；53- interconnecting pieces；
6- eyes.
Specific implementation mode
In order to make technical problem to be solved in the utility model, technical solution and advantageous effect be more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
Example is applied only to explain the utility model, is not used to limit the utility model.
It should be noted that when element is referred to as " being set to " another element, it can be directly on another element
Or it is connected on another element.When an element is known as " being connected to " another element, it can directly be connected
It is connected to another element or is indirectly connected on another element.In addition, term " first ", " second " are only used for description mesh
, it is not understood to indicate or imply relative importance or implicitly indicates the quantity of indicated technical characteristic.It limits as a result,
There is the feature of " first ", " second " to can explicitly or implicitly include one or more this feature surely.It is new in this practicality
In the description of type, the meaning of " plurality " is two or more, unless otherwise specifically defined.
It please refers to Fig.1 and Fig. 2, one kind wearing display optical system, include the image generation unit set gradually along light path
1, the first lens unit 2, the first optical unit 3 and the second optical unit 4.Wherein image generation unit 1 is for generating and sending out
The light beam for carrying image information is penetrated, the first lens unit 2 generates the light beam that unit 1 generates and the biography to light beam for transmission image
It broadcasts direction to be adjusted, for light beam to be reflected and transmitted, the second optical unit 4 is used for light beam the first optical unit 3
It is reflected, the light beam reflected through the second optical unit 4 returns to the first optical unit 3, and transmits through the first optical unit 3 laggard
The visual field of access customer, the i.e. eyes 6 of user.The central shaft of the central shaft of first optical unit 3 and the first lens unit 2 is at first
The central shaft of default angle, the central shaft of the second optical unit 4 and the first lens unit 2 is at the second default angle.Wear display
Optical system further includes for stopping that environment stray light reaches the light-baffling device 5 of the first optical unit 3, and light-baffling device 5 is set to the
One optical unit 3 is backwards to the side of the first lens unit 2.
The operation principle provided in this embodiment for wearing display optical system is as follows：Image generation unit 1, which generates, carries figure
As the light beam of information, and by beam emissions to the first lens unit 2；First lens unit 2 adjusts the direction of propagation of light beam
After whole, light beam is transmitted to the first optical unit 3；Light beam reaches 3 rear portion of the first optical unit and reflects, part hair
Raw transmission, the light beam reflected reach the second optical unit 4；Second optical unit 4 reflects light beam, by the second light
It learns the light beam that unit 4 reflects and returns to the first optical unit 3；Light beam reaches 3 rear portion of the first optical unit and reflects, one
The raw transmission of distribution, the light beam transmitted reach the eyes 6 of user, so that the eyes 6 of user can obtain image generation
The image information of unit 1.Environment spurious rays positioned at the side opposite with the first lens unit 2 of the first optical unit 3 exist
Under the blocking of light-baffling device 5, it cannot be introduced into and wear in display optical system, to which the first optical unit 3 can not be reached, in turn
The eyes 6 of user can not be reached, it is ensured that the light beam only after the second optical unit 4 can reach the eyes 6 of user.
The advantageous effect being arranged in this way is：Due to being equipped with backwards to the side of the first lens unit 2 in the first optical unit 3
Light-baffling device 5, so that environment spurious rays can not reach the first optical unit 3, Jin Erwu under the blocking of light-baffling device 5
Method reaches the eyes 6 of user, avoids environment spurious rays to wearing the influence of the light beam in display optical system, has ensured head
Wear the image quality of display optical system；Simultaneously because spurious rays can not reach the first optical unit 3, to enter
In the eyes 6 of user, therefore user not can be appreciated that image information (such as ground, clothing entrained by stray light in use
Clothes, trousers etc.), and the image by 3 laggard access customer eyes 6 of the first optical unit is can only see, effectively improve user's body
It tests.
Further, the size of light-baffling device 5 is not less than perspective plane of first optical unit 3 on 5 direction of light-baffling device
Product, avoids not stopping environment stray light completely because the size of light-baffling device 5 is too small, so that it is guaranteed that light-baffling device 5 can be complete
Fully blocking environment stray light is conducive to improve the image quality for wearing display optical system, and then improves user experience.
Fig. 3 to Fig. 5 is please referred to, further, the specific location of light-baffling device 5 can be set as needed, such as
Light-baffling device 5 can be perpendicular with the central shaft of image generation unit 1, also can out of plumb, as long as the size of light-baffling device 5 is not less than
Projected area of first optical unit 3 on 5 direction of light-baffling device, to which light-baffling device 5 can stop environment stray light,
Prevent environment stray light from entering the first optical unit 3.
Fig. 6 and Fig. 7 are please referred to, further, light-baffling device 5 includes the fixed part 51 for connecting the first optical unit 3
And the light-blocking part 52 for being in the light, the opposite sides of fixed part 51 are equipped with interconnecting piece 53.
In the present embodiment, two interconnecting pieces 53 are isosceles triangle connecting plate, the bottom edge of isosceles triangle connecting plate
It is connect with the lower end of fixed part 51, isosceles triangle connecting plate is equipped with the connecting shaft being connect with light-blocking part 52；Light-blocking part 52 is U
Template, the both ends of U-shaped board, which are offered, to be connected with the connecting hole that connect axis connection, connecting hole with connecting shaft.It should be understood that
It is that interconnecting piece 53 or other shapes are not limited in above-mentioned situation；Light-blocking part 52 or other shapes, and not only
It is limited to above-mentioned situation, as long as light-blocking part 52 is connect with interconnecting piece 53, and light-blocking part 52 can effectively stop environment stray light.
Preferably, light-blocking part 52 connect with interconnecting piece 52 and can the rotation of opposing connections 53.In actual use, due to ring
The incident angle of border stray light can change with the difference of environment, due to light-blocking part 52 can opposing connections 53 rotate,
I.e. light-blocking part 52 can be relatively fixed the rotation of portion 51, to which the relative position of light-blocking part 52 and the first optical unit 3 can be as needed
It is adjusted, so that it is guaranteed that light-blocking part 52 can effectively stop environment stray light.It should be understood that light-blocking part 52 also can be opposite
Interconnecting piece 53 fixes (i.e. light-blocking part 52 does not relatively rotate with interconnecting piece 53), as long as light-blocking part 52 can effectively stop that environment is miscellaneous
Astigmatism.
In one embodiment, the upper surface (one side opposite with light-blocking part 52) of fixed part 51 is additionally provided with for accommodating figure
The first holding part 510 as generating unit 1, the size of the first holding part 510 are adapted with the size of image generation unit 1, from
And good restriction effect can be played to image generation unit 1, prevent image generation unit 1 from arbitrarily shaking in use
It is dynamic, influence image quality.Fixed part through-hole 511 is also opened up on fixed part 51, the first lens unit 2 is accommodated in fixed hole 511
In, the first optical unit 3 is accommodated in the U-shaped region of light-blocking part 52 and is adapted with the position of the first lens unit 2；Adjusting is in the light
Position of the portion 52 relative to the first optical unit 3, it is ensured that light-blocking part 52 can effectively stop environment stray light.
Further, the size of light-blocking part 52 is mutually fitted with projected area of first optical unit 3 on 52 direction of light-blocking part
It answers.Preferably, the size of light-blocking part 52 is identical as projected area of first optical unit 3 on 52 direction of light-blocking part, so as to
To reduce the size of light-blocking part 52, and then reduce the overall volume for wearing display optical system.
Preferably, the surface of light-baffling device 5 is black or dark color, and 5 table of light-baffling device is irradiated to so as to preferably absorb
The stray light in face improves blocking effect of the light-baffling device 5 to stray light.
In one embodiment, light-baffling device 5 can be also relatively fixed with the first optical unit 2 by other means, such as
It can be fixed by viscose glue mode and the structural member of the first optical unit 3；It also can be by way of screw with the first optical unit 3
Structural member is fixed；It can also be with the structural member integrated injection molding of the first optical unit 3, to form a complete whole knot
Structure.
Further, the first default angle is 45 °, and the second default angle is 90 °, i.e. the central shaft of the first optical unit 3
Angle with the central shaft of the first lens unit 2 is 45 °, the center of the central shaft of the second optical unit 4 and the first lens unit 2
Axis is mutually perpendicular to, and the angle of the central shaft of the central shaft of the first optical unit 3 and the second optical unit 4 is 45 °.Therefore work as light
When beam reaches the first optical unit 3 after the first lens unit 2, the incidence angle of light beam is 45 °, and angle of reflection is also 45 °, thus
The reflected beams and how the angle between light beam is 90 °；When light beam reaches the second optical unit 4, the incidence angle of light beam is 0 °,
Angle of reflection is also 0 °.
Referring to Fig. 1, further, image generation unit 1 is micro-display, micro-display and the first lens unit 2 are total
Axis, the first lens unit 2 include at least one lens.Specifically, using micro-display, be conducive to mitigate and wear display optical system
The weight of system.The size of micro-display is 0.29 inch~1.3 inches (1 inch about 2.54 centimetres), can be carried out as needed
Setting, preferably 0.71 inch, the length-width ratio of micro-display is preferably 16：9.The image display area of micro-display passes through first
Being formed by screen size after lens unit 2, the first optical unit 3 and the second optical unit 4 is：Length in horizontal direction
It is 15.718 centimetres to spend H, and the width V on vertical direction is 8.842 centimetres, thereforeIt is 7.859 centimetres,It is 4.421 centimetres,
That is the length-width ratio of screen and the length-width ratio of micro-display is identical, and the field angle fov (H) in horizontal direction meetsField angle fov (V) on vertical direction meetsWherein f is to wear display light
The effective focal length of system.In the present embodiment, the field angle for wearing display optical system (is referred to herein as screen diagonal
Field angle) it is more than 40 °, to have big field angle, and then there is better user experience.Field angle in horizontal direction is set
More than the field angle on vertical direction, primary concern is that the field angle of the eyes of people in the horizontal direction is than on vertical direction
Field angle bigger, therefore can guarantee that user experience is more preferable.
Referring to Fig. 8, in the present embodiment, in order to preferably describe, considering the direction where the central shaft of micro-display
For Y-direction, the direction where the central shaft of the second optical unit 4 is X-direction, and X-direction is mutually perpendicular to Y-direction, micro-display
Central shaft and the central axis of the second optical unit 4 intersect at the first optical unit 3.
Further, the first lens unit 2 includes the first lens 21 and the second lens 22 set gradually along light path, and first
Lens 21 and the second lens 22 are coaxial and coaxial with image generation unit 1.Using coaxial manner, not only so that wearing display optics
The overall structure of system is simpler, and processing and adjustment are simpler, and is conducive to improve the imaging for wearing display optical system
Quality.
It can all lead to light due to wearing the offset of position and the deflection of angle between the various components in display optical system
System is not coaxial, to influence image quality.
In the present embodiment, the central shaft of the first lens 21 and the angle of Y-direction are not more than 3 °, the center of the second lens 22
Axis and the angle of Y-direction are not more than 3 °.Specifically, the angle that the first lens 21 are deflected around X-direction is not more than 3 °, the first lens 21
Angle around Y-direction deflection is not more than 3 °；The angle that second lens 22 are deflected around X-direction is not more than 3 °, and the second lens 22 are around the side Y
It is not more than 3 ° to the angle of deflection.Preferably, the angle that the first lens 21 are deflected around X-direction is not more than 0.5 °, the first lens 21
Angle around Y-direction deflection is not more than 0.5 °；The angle that second lens 22 are deflected around X-direction is not more than 0.5 °, the second lens 22
Angle around Y-direction deflection is not more than 0.5 °, to can guarantee that wearing display optical system has good image quality.
In the present embodiment, the offset of the first lens 21 in the X direction is no more than 2 millimeters, and the first lens 21 are in the Y direction
Offset be no more than 2 millimeters；The offset of second lens 22 in the X direction is no more than 2 millimeters, and the second lens 22 are in the Y direction
Offset is no more than 2 millimeters.Preferably, the offset of the first lens 21 in the X direction is no more than 0.1 millimeter, and the first lens 21 are in the side Y
Upward offset is no more than 0.1 millimeter；The offset of second lens 22 in the X direction is no more than 0.1 millimeter, and the second lens 22 are in Y
Offset on direction is no more than 0.1 millimeter, to can guarantee that wearing display optical system has good image quality.
Further, the face type of the first lens 21 and the second lens 22 is spherical surface, and be all made of plastic cement by injection molding or
The mode of hot pressing is process, and processing method is simple, is easy to produce in batches and be assembled.In the present embodiment, 21 He of the first lens
Second lens 22 are made of resin material, preferably polymethyl methacrylate (PMMA), are readily produced and cheap, matter
Ground is light, advantageously reduces manufacturing cost and overall weight.In other embodiments, the first lens 21 and the second lens 22 also can be by
Glass is made.
It should be understood that the first lens unit 2 can also only include a lens, can also include more than two
Mirror, such as may include three lens etc., it is not limited herein.
Fig. 8 and Fig. 9 are please referred to, further, the first optical unit 3 includes the first optical mirror slip 31, the first optical mirror slip
The surface of 31 the first lens units 2 of direction is the first upper surface 311, table of first optical mirror slip 31 backwards to the first lens unit 2
Face is the first lower surface 312.
In one embodiment, the first upper surface 311 is equipped with the first part reflective semitransparent film, and the first lower surface 312 is equipped with
First anti-reflection film.Part reflective semitransparent film refers to that incident beam is reflected by part reflective semitransparent film rear portion herein, a part
It transmits；Anti-reflection film can reduce reflection herein, increase transmission.When light beam is incident on the first light by the first lens unit 2
When learning eyeglass 31, light beam is contacted with the first upper surface 311 of the first optical mirror slip 31, and a part for incident beam reflects,
A part transmits；The part transmitted reaches the first lower surface 312, and from first under the action of the first anti-reflection film
It is emitted in optical mirror slip 31, is absorbed after the light beam arrival light-baffling device 5 of outgoing；The part reflected reaches the second optics list
The first optical mirror slip 31 is reflected back after member 4 again, and passes through the first upper surface 311 and the first lower surface 312 successively, it is anti-reflection first
Be emitted from the first optical mirror slip 31 under the action of film, the light beam of outgoing reaches the eyes 6 of user so that user see it is micro-
The image of display emission.
In one embodiment, the first anti-reflection film is set on the first upper surface 311, and the first part reflective semitransparent film is set under first
On surface 312, the process after light beam the first optical mirror slip 31 of arrival is similar with said circumstances, and details are not described herein again.
Preferably, the transflection ratio (i.e. the ratio of transmitted ray and reflection light) of the first part reflective semitransparent film is 7:3, i.e., it ought enter
After the first part reflective semitransparent film, 70% incident light transmits irradiating light beam, and 30% incident light reflects.Due to transmission
The ratio of light is bigger, and the light that bottom light reflects the eyes 6 of laggard access customer through the first optical mirror slip 31 is fewer, to
The influence for the reflection light that environment stray light generates is smaller, and user experience is more preferable.
It should be understood that the transflection ratio of the first part reflective semitransparent film may be other values, such as transflection ratio can be 5:5、
6:4、8:2 or 9:1 etc., it can be configured, not be limited herein as needed.
In the present embodiment, the central shaft of the first optical mirror slip 31 and the angle of the central shaft of the first lens unit 2 are
45 °, the central shaft of the first optical mirror slip 31 and the angle of Y-direction are not more than 5 °.Specifically, the first optical mirror slip 31 is around X-direction
The angle of deflection is not more than 5 °, and the angle that the first optical mirror slip 31 is deflected around Y-direction is not more than 5 °；Preferably, the first optical frames
The angle that piece 31 is deflected around X-direction is not more than 0.5 °, and the angle that the first optical mirror slip 31 is deflected around Y-direction is not more than 0.5 °, from
And it can guarantee that wearing display optical system has good image quality.
In one embodiment, the first optical mirror slip 31 is non-planar mirror, the offset of the first optical mirror slip 31 in the X direction
No more than 1 millimeter, the offset of the first optical mirror slip 31 in the Y direction is no more than 1 millimeter；Preferably, the first optical mirror slip 31 is in X
Offset on direction is no more than 0.1 millimeter, and the offset of the first optical mirror slip 31 in the Y direction is no more than 0.1 millimeter, so as to protect
Card, which wears display optical system, has good image quality.
In one embodiment, the first optical mirror slip 31 be plane mirror, at this time its in the X direction with the offset in Y-direction
Its image quality is not influenced, to which its assembly is simpler, is conducive to wear display optical system and is formed good image quality.
Fig. 8 and Figure 10 are please referred to, further, the second optical unit 4 includes the second optical mirror slip 41, the second optical mirror slip
The surface of 41 the first optical units 3 of direction is the second upper surface 411, table of second optical mirror slip 41 backwards to the first optical unit 3
Face is the second lower surface 412.
In one embodiment, the second upper surface 411 is equipped with the second part reflective semitransparent film, and the first optics is come from for reflecting
The light beam of unit 3；Second lower surface 412 is equipped with the second anti-reflection film, for transmiting the light from environment.On the one hand, it comes from
After the light beam of first optical unit 3 reaches the second optical mirror slip 41, the second upper surface 411 of light beam and the second optical mirror slip 41 connects
It touches, a part for incident beam reflects, and a part transmits；The part transmitted reaches the second lower surface 412, and
And it is emitted to and wears outside display optical system from the second optical mirror slip 41 under the action of the second anti-reflection film；The portion reflected
Divide and then reaches the first optical mirror slip 31.On the other hand, the light from environment passes through under the second of the second optical mirror slip 41 successively
Enter behind surface 412 and the second upper surface 411 and wear in display optical system to the end, and is incident at the first optical mirror slip 31；Enter
It is mapped to the environment light beam at the first optical mirror slip 31 and passes through the first upper surface 311 and the first lower surface 312 successively, it is anti-reflection first
It is emitted from the first optical mirror slip 31 under the action of film, the light beam of outgoing reaches the eyes 6 of user, so that user can also
See that ambient image, i.e. user can see the image and ambient image of micro-display simultaneously, to realize extraneous scene with
Interaction between screen message.Second anti-reflection film is set on the second lower surface 412 of the second optical mirror slip 41, is conducive to wear
It needs the beam exit being emitted to outside in display optical system, reduces influence of the stray light to image quality, while ambient light
Line can be effectively transmitted in display optical system, enabled a user to obtain brighter ambient image, improved imaging
Quality improves user experience.
In one embodiment, the second anti-reflection film is set on the second upper surface 411, and the second part reflective semitransparent film is set under second
On surface 412, the process after light beam the second optical mirror slip 41 of arrival is similar with said circumstances, and details are not described herein again.
It should be understood that the transflection ratio of the second part reflective semitransparent film can be configured as needed, such as can be 5:
5、6:4、7:3、8:2 or 9:1 etc., it is not limited herein.
Further, the second optical mirror slip 41 is that have the spherical mirror of equal thickness, the aspherical mirror of equal thickness or equal thickness
Free-form curved mirror.Preferably, the second optical mirror slip 41 is the spherical mirror with equal thickness, easy to process.Equal thickness refers to herein
Be that the thickness of the second optical mirror slip everywhere is equal.
Further, the radius of curvature R of the second optical mirror slip 41 meets R>2 (d1+d2), wherein d1 refer to the second optics
Central shaft and first optical mirror slip 31 of the intersection point of the central shaft of eyeglass 41 and the second optical mirror slip 31 to the second optical mirror slip 41
Intersection point distance, d2 refer to micro-display central shaft and the second lens 22 close to the side of the first optical mirror slip 31 friendship
Point arrives the central shaft of micro-display at a distance from the intersection point of the first optical mirror slip 31, to be more advantageous to imaging.
In the present embodiment, the central shaft of the second optical mirror slip 41 and the central shaft of micro-display are perpendicular, the second optics
The central shaft of eyeglass 41 and the angle of Y-direction are not more than 0.5 °.Specifically, the angle that the second optical mirror slip 41 is deflected around X-direction
No more than 0.5 °, the angle that the second optical mirror slip 41 is deflected around Y-direction is not more than 0.5 °；Preferably, the second optical mirror slip 41 is around X
The angle of direction deflection is not more than 0.1 °, and the angle that the second optical mirror slip 41 is deflected around Y-direction is not more than 0.1 °, to can guarantee
Wearing display optical system has good image quality.
In the present embodiment, the offset of the second optical mirror slip 41 in the X direction is no more than 0.5 millimeter, the second optical mirror slip
41 offset in the Y direction is no more than 0.5 millimeter；Preferably, the offset of the second optical mirror slip 41 in the X direction is no more than 0.05
Millimeter, the offset of the second optical mirror slip 41 in the Y direction are no more than 0.05 millimeter, and display optical system tool is worn to can guarantee
There is good image quality.
In one embodiment, the second optical mirror slip 41 is made of glass material, is uniformly distributed in the second optical mirror slip 41
There is photochromic material.Specifically, the off-color material of light is fabricated to the second optical mirror slip 41 after evenly mixing with glass material, from
And the second optical mirror slip 41 is enable to achieve the effect that uniformly to change colour in discoloration.
In one embodiment, the second optical mirror slip 41 is made of resin material, and the surface of the second optical mirror slip 41 is uniform
It is coated with photochromic coating, so that the second optical mirror slip 41 can achieve the effect that uniformly to change colour in discoloration.
In one embodiment, the second optical mirror slip 41 is made of resin material, and the surface of the second optical mirror slip 41 is uniform
Infiltration has photochromic material, so that the second optical mirror slip 41 can achieve the effect that uniformly to change colour in discoloration.
Photochromic refers to photochromic material when being irradiated by specified wavelength, and absorption spectrum is changed reversible
Process.Photochromic material includes silver halide system, diarylethene, fulgide, spiro-pyrans, spiral shell piperazine, azo and correlation
Heterocyclic compound.In the present embodiment, when the second optical mirror slip 41 with photochromic material is in the stronger ring of sunlight
When in border, the second optical mirror slip 41 can be irradiated by short wavelength lights such as ultraviolet lights, at this time the color of the second optical mirror slip 41
Can uniformly deepen, the second optical mirror slip 41 reduces the transmitance of ambient light so that by the second optical mirror slip 41 into
Enter to the amount light worn in display optical system and reduce so that user still can comfortably make under the stronger environment of light
With；When ambient light is dark, the lighter of the second optical mirror slip 41, transmitance of second optical mirror slip 41 to ambient light
Increase, increases so that entering the amount light worn in display optical system by the second optical mirror slip 41 so that user
It still can be used normally in the environment of dark.
1 is please referred to Fig.1, further, the first optical mirror slip 31 projected area on 41 direction of the second optical mirror slip is not small
In the size of the second optical mirror slip 41, so that entering the ring worn in display optical system by the second optical mirror slip 41
Border light beam can reach the first optical mirror slip 31, and by just reaching the eyes 6 of user after the first optical mirror slip 31, to make
Obtaining the external image that user sees has better consistency, while external image has better consistency with screen picture,
User experience is more preferable.Refering to fig. 12, it is corresponding to be, when the first optical mirror slip 31 is in 41 direction upslide of the second optical mirror slip
When shadow area is less than the size of the second optical mirror slip 41, is on the one hand entered by the second optical mirror slip 41 and wear display optical system
An environment light beam part in system can be by just reaching the eyes 6 of user after the first optical mirror slip 31, this some light is dark, and
A part can directly reach the eyes 6 of user, this some light is then brighter, and the external image that user watches at this time just will appear
Region is bright and situation that other region is dark for some, and the consistency of external image is bad；Another aspect screen picture and outside
Image cannot be well matched with, and the consistency of the two is low, and the eyes 6 of user easy to produce fatigue.
Preferably, the first optical mirror slip 31 projected area and second optical mirror slip 41 on 41 direction of the second optical mirror slip
Size is identical, not only ensures that the external image that user sees has good consistency, but also be conducive to reduce and wear display light
The overall dimensions of system.
The pupil size of the eyes of people is generally 2 millimeters~8 millimeters, and the size of pupil with the reduction of ambient brightness and
Become larger, and larger exit pupil diameter is then conducive to wear the registration tolerance of display optical system and pupil of human center；This implementation
The exit pupil diameter for wearing display optical system of example offer is more than 8 millimeters, and distance of exit pupil is more than 15 millimeters, so that user exists
There is better user experience when viewing.Preferably, the exit pupil diameter provided in this embodiment for wearing display optical system is 8 millis
Rice, distance of exit pupil are 18 millimeters, to have good user experience.
In one embodiment, the field angle for wearing display optical system is 45 °, corresponding MTF curve
(Modulation Transfer Function, i.e. modulation transfer function) is as shown in figure 13.It is 30lp/ due to working as spatial frequency
When mm, mtf value is higher, then resolution ratio is higher, and then image image quality is higher；As can be known from Fig. 13, each curve represents in figure
The MTF curve of MTF curve under different visual fields, each visual field is all higher than 0.2 when spatial frequency is 30lp/mm, is much larger than human eye
The limit of resolution, therefore the image quality for wearing display optical system of the present embodiment is very high.
Further, provided in this embodiment to wear display optics in order to ensure to wear the compactedness of display optical system
The height of system in the Y direction is not more than 100 millimeters；Preferably, the height of display optical system in the Y direction is worn to be not more than
70 millimeters, so that wearing the overall volume smaller of display optical system, being more convenient for wearing and carrying, user experience is more preferable.
The purpose of the present embodiment, which also resides in, to be provided one kind and wears display equipment, including above-mentioned wears display optical system.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. one kind wearing display optical system, it is characterised in that：Include being set gradually along light path：
Image generation unit, the light beam for generating and emitting carrying image information；
First lens unit for transmitted light beam and adjusts the direction of propagation of light beam；
First optical unit, for being reflected light beam and being transmitted, the central shaft of first optical unit and described first
The central shaft of lens unit is at the first default angle；
Second optical unit, for reflecting light beam, the central shaft of second optical unit and the first lens list
The central shaft of member is at the second default angle；
Light beam returns to first optical unit after second optical unit reflection, and is transmitted through first optical unit
The eyes of laggard access customer；
The display optical system of wearing further includes：
Light-baffling device is set to first optical unit backwards to the side of first lens unit, for stopping that environment is spuious
Light reaches first optical unit.
2. wearing display optical system as described in claim 1, it is characterised in that：The light-baffling device includes for connecting
It states the fixed part of the first optical unit and the light-blocking part for being in the light, the opposite sides of the fixed part is equipped with interconnecting piece,
The light-blocking part is connect with the interconnecting piece；
The size of the light-blocking part is not less than projected area of first optical unit on the light-baffling device direction.
3. wearing display optical system as described in claim 1, it is characterised in that：The first default angle is 45 °, described
Second default angle is 90 °；
It is micro-display that described image, which generates unit, and the micro-display is coaxial with first lens unit；
First lens unit includes at least one lens；
Direction where the central shaft of second optical unit is X-direction, the direction where the central shaft of the micro-display
For Y-direction, the X-direction is mutually perpendicular to the Y-direction, the central shaft of the micro-display and second optical unit
Central axis intersects at first optical unit.
4. wearing display optical system as claimed in claim 3, it is characterised in that：
First lens unit includes the first lens and the second lens set gradually along light path, first lens and described
Second lens are coaxial and coaxial with described image generation unit；
The central shaft of first lens is not more than 3 ° with the angle of the Y-direction, central shaft and the Y of second lens
The angle in direction is not more than 3 °；
The offset of first lens in the X direction is no more than 2 millimeters, and the offset of first lens in the Y direction is no more than 2
Millimeter；
The offset of second lens in the X direction is no more than 2 millimeters, and the offset of second lens in the Y direction is no more than 2
Millimeter.
5. as described in claim 3 or 4 wear display optical system, it is characterised in that：First optical unit includes the
One optical mirror slip, first optical mirror slip is equipped with the first part reflective semitransparent film towards the surface of first lens unit, described
First optical mirror slip is equipped with the first anti-reflection film backwards to the surface of first lens unit；
Alternatively,
First optical mirror slip is equipped with the first anti-reflection film, first optical mirror slip towards the surface of first lens unit
It is equipped with the first part reflective semitransparent film backwards to the surface of first lens unit.
6. wearing display optical system as claimed in claim 5, it is characterised in that：
The central shaft of first optical mirror slip is not more than 5 ° with the angle of the Y-direction；
First optical mirror slip is non-planar mirror, and the offset of first optical mirror slip in the X direction is no more than 1 millimeter, institute
It states the offset of the first optical mirror slip in the Y direction and is no more than 1 millimeter.
7. wearing display optical system as claimed in claim 3, it is characterised in that：Second optical unit includes the second light
Learn eyeglass, second optical mirror slip towards the surface of first optical unit be equipped with the second part reflective semitransparent film, described second
Optical mirror slip is equipped with the second anti-reflection film backwards to the surface of first optical unit；
Alternatively,
Second optical mirror slip is equipped with the second anti-reflection film, second optical mirror slip towards the surface of first optical unit
It is equipped with the second part reflective semitransparent film backwards to the surface of first optical unit.
8. wearing display optical system as claimed in claim 7, it is characterised in that：The central shaft of second optical mirror slip with
The central shaft of the micro-display is perpendicular, and the central shaft and the angle of the Y-direction of second optical mirror slip are not more than
0.5°；
The offset of second optical mirror slip in the X direction is no more than 0.5 millimeter, and second optical mirror slip 41 is in the Y direction
Offset be no more than 0.5 millimeter.
9. wearing display optical system as claimed in claim 7 or 8, it is characterised in that：Second optical mirror slip is uniform thickness
Optical mirror slip；
Second optical mirror slip is resin lens, and the surface of second optical mirror slip is coated with photochromic coating；
Alternatively,
Second optical mirror slip is resin lens, and the surface penetration of second optical mirror slip has photochromic material；
Alternatively,
Second optical mirror slip is glass lens, and photochromic material is evenly distributed in second optical mirror slip.
10. one kind wearing display equipment, it is characterised in that：Display optical system is worn including claim 1~9 any one of them
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820192046.1U CN207780379U (en) | 2018-02-02 | 2018-02-02 | One kind wearing display optical system and wears display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820192046.1U CN207780379U (en) | 2018-02-02 | 2018-02-02 | One kind wearing display optical system and wears display equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207780379U true CN207780379U (en) | 2018-08-28 |
Family
ID=63212164
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820192046.1U Active CN207780379U (en) | 2018-02-02 | 2018-02-02 | One kind wearing display optical system and wears display equipment |
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| Country | Link |
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| CN (1) | CN207780379U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108227205A (en) * | 2018-02-02 | 2018-06-29 | 深圳惠牛科技有限公司 | One kind wears display optical system and wears display equipment |
| CN111290128A (en) * | 2020-03-31 | 2020-06-16 | 京东方科技集团股份有限公司 | Optical system, display device and intelligent glasses |
| WO2022151731A1 (en) * | 2021-01-15 | 2022-07-21 | 广州视享科技有限公司 | Optical machine device for head-mounted display apparatus, and optical machine module |
-
2018
- 2018-02-02 CN CN201820192046.1U patent/CN207780379U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108227205A (en) * | 2018-02-02 | 2018-06-29 | 深圳惠牛科技有限公司 | One kind wears display optical system and wears display equipment |
| CN111290128A (en) * | 2020-03-31 | 2020-06-16 | 京东方科技集团股份有限公司 | Optical system, display device and intelligent glasses |
| CN111290128B (en) * | 2020-03-31 | 2021-10-01 | 京东方科技集团股份有限公司 | Optical system, display device and intelligent glasses |
| WO2022151731A1 (en) * | 2021-01-15 | 2022-07-21 | 广州视享科技有限公司 | Optical machine device for head-mounted display apparatus, and optical machine module |
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