A kind of miniature display systemTechnical field
This utility model relates to wear-type visual device field, is applied to the miniature aobvious of headset equipment particularly to a kind ofShow system.
Background technology
The optical system of wear-type visual device of the prior art (Head Mount Display, HMD) includes displayDevice, collimating lens and reflecting surface.Display, such as LCD, OLED, LCOS etc., sends different light according to the difference of display image,Being imaged on infinite point by collimating lens, the light emission then by reflecting surface, display sent is entered in the eyes of people.
But the optical system of wear-type visual device of the prior art is when design, does not takes into full account the experience of user,For myope, the image on display can not be seen after wearing HMD clearly, affect Consumer's Experience.If myope wearsWear HMD after putting on glasses for the myopia again, it will the image causing user to see diminishes, the most also user can be made easily to produce tired outSense, affects Consumer's Experience.
Utility model content
This utility model provides a kind of miniature display system being applied to headset equipment, is used for solving existing wearingFormula equipment does not have diopter regulatory function, narrow application range, the problem that myopia experience effect is the best.
In order to solve above-mentioned technical problem, the technical solution of the utility model, for providing a kind of miniature display system, is arrangedIn headset equipment, including display module, lamp guide, polarization splitting prism, quarter wave plate and diopter lens；
Described display module is used for sending polarized light；
Described lamp guide is fixing connects described polarization splitting prism, for the polarized light conduction sent by described display moduleTo described polarization splitting prism；
Described polarization splitting prism is just to human eye, and described quarter wave plate is arranged at described polarization splitting prism away from human eyeSide, described diopter lens and described quarter wave plate are close to arrange, and are arranged at the quarter wave plate side away from human eye, and diopter lens is away from peopleThe side of eye is provided with a reflectance coating；
Described polarization splitting prism reflects the polarized light of described lamp guide conduction, enters diopter lens through quarter wave plate and adjusts,Polarized light after reflectance coating reflection adjustment, the polarized light after adjustment enters human eye through quarter wave plate, polarization splitting prism.
In this utility model one embodiment, miniature display system also includes magnifier, is arranged at described diopter lens away from peopleThe side of eye, described diopter lens is not arranging reflectance coating, and described reflectance coating is arranged at the magnifier side away from human eye.
In this utility model one embodiment, miniature display system also includes offset lens, be arranged at described magnifier away fromThe side of human eye, is not exaggerated for the external image making human eye watch.
In this utility model one embodiment, described display module be LCOS (Liquid Crystal on Silicon,LCS) display, OLED (Organic Light-Emitting Diode, OLED) display and LCD (LiquidCrystalDisplay, LCD) any one in display；
When display module is LCOS display, miniature display system also includes light source, and the light that light source sends exposes toLCOS display, makes LCOS display send polarized light；
When display module is OLED display, miniature display system also includes that 1/2 wave plate, described 1/2 wave plate are arranged atBetween OLED display and described lamp guide, become polarized light for light OLED display sent.
In this utility model one embodiment, described lamp guide is glass square rod or plastics square rod.
In this utility model one embodiment, the lateral wall of described lamp guide is provided with anti-reflection film, is used for being lowered into leadingThe veiling glare of optical wand.
In this utility model one embodiment, described polarization splitting prism is one-body molded with described lamp guide.
In this utility model one embodiment, described headset equipment includes intelligent glasses and intelligent helmet.
This utility model provide miniature display system can be arranged in headset equipment, by polarization splitting prism,Quarter wave plate and the effect of diopter lens, the polarization light sent by display module is incident to human eye after being adjusted, and makes myopia personnel's energyEnough it is clearly seen that the image that display module is play, improves Consumer's Experience effect.External image also can pass through diopter lens, 1/4 rippleSheet and polarization splitting prism are incident to human eye, while enabling myopia personnel to see display module broadcasting image clearly, moreover it is possible to see clearlyImage in reality.Separately, in view of quarter wave plate and diopter lens are arranged at the side away from human eye, it is miniature that this utility model providesDisplay system is easier to be combined with headset equipment.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, required in embodiment being described belowThe accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only enforcements more of the present utility modelExample, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtains according to these accompanying drawingsObtain other accompanying drawing.
Fig. 1 is the miniature display system architectures figure of this utility model one embodiment；
Fig. 2 is the miniature display system architectures figure of another embodiment of this utility model；
Fig. 3 is the miniature display system architectures figure of this utility model another embodiment；
Fig. 4 is the miniature display system architectures figure of the another embodiment of this utility model.
Reference numeral illustrates:
101,301,401: display module；102,302,402: polarized light；
103: lamp guide；104: polarization splitting prism；
105,305,405: diopter lens；106,306,406:1/4 wave plate；
107,307,407: human eye；108,408: magnifier；
109,409: offset lens；110,410:1/2 wave plate；
R: reflectance coating；303,403: prism.
Detailed description of the invention
In order to make technical characterstic of the present utility model and effect become apparent from, below in conjunction with the accompanying drawings to skill of the present utility modelArt scheme is described further, and this utility model also can have other different instantiations be illustrated or implement, Ren HebenThe equivalents that skilled person does within the scope of the claims belongs to protection category of the present utility model.
As it is shown in figure 1, the miniature display system architectures figure that Fig. 1 is this utility model one embodiment, in the present embodiment, miniatureDisplay system can pass through the effect of polarization splitting prism, quarter wave plate and diopter lens, and the polarization light sent by display module is carried outEntering human eye after regulation, be more suitable for myope, separately, the miniature display system that the present embodiment provides is easier to set with wear-typeFor being combined.Concrete, miniature display system includes: display module 101, lamp guide 103, polarization splitting prism 104,1/4Wave plate 106 and diopter lens 105；
Described display module 101 is used for sending polarized light 102；
Described lamp guide 103 is fixing connects described polarization splitting prism 104, for the polarization sent by described display moduleLight conduction is to described polarization splitting prism；
Described polarization splitting prism 104 just to human eye, described quarter wave plate 106 be arranged at described polarization splitting prism away fromThe side of human eye, described diopter lens 105 and described quarter wave plate 106 be close to arrange, be arranged at the quarter wave plate side away from human eye,Diopter lens 105 is provided with a reflectance coating R away from the side of human eye；
Described polarization splitting prism 104 reflects the polarized light of described lamp guide conduction, enters dioptric through quarter wave plate 106Mirror 105 adjusts, and the polarized light after reflectance coating R reflection adjustment, the polarized light after adjustment is through quarter wave plate 106, polarization splitting prism104 enter human eye 107.
This utility model provide miniature display system can be arranged in headset equipment, by polarization splitting prism,Quarter wave plate and the effect of diopter lens, the polarization light sent by display module is incident to human eye after being adjusted, and makes myopia personnel's energyEnough it is clearly seen that the image that display module is play.Real world images also can be incident to human eye by the first corner cube prism, makes myopiaWhile personnel can see display module broadcasting image clearly, moreover it is possible to see the image in reality clearly.Separately, in view of quarter wave plate and dioptricMirror is arranged at the side away from human eye, it is provided that miniature display system be easier to be combined with headset equipment.
Specifically, the central optical axis of micro-optics system is same direction with the optical axis of human eye.Each optics can lead toCross gluing mode to fix.
Described diopter lens is used for myopia correction, and diopter lens can be designed according to the myopic degree of human eye, and reflectance coating is permissibleFor part reflective semitransparent film, it is possible to for having the reflectance coating of other reflectance, can be set according to demand, this utility model is to this notLimit.
Headset equipment described in the utility model includes but not limited to intelligent glasses, intelligent helmet etc., this utility modelHeadset equipment is specially and why not limits.
Lamp guide described in the utility model is glass square rod or plastics square rod, as long as light can be conducted and for transparent thingMatter all can be fabricated to lamp guide described in the utility model.
When being embodied as, anti-reflection film can be set at the lateral wall circumference of lamp guide, for being lowered into the veiling glare of lamp guide, carryThe quality of high display module broadcasting pictures.
Polarization splitting prism of the present utility model includes the first corner cube prism and the second corner cube prism, the first corner cube prism andSecond corner cube prism can be isosceles right-angle prism, it is also possible to for non-isosceles right-angle prism, this utility model is to its concrete structureDo not limit.The inclined-plane increasing degree of the first corner cube prism or the second corner cube prism has one layer of material with reflectance, forms reflectionFace, is then secured together the inclined-plane of the first corner cube prism and the second corner cube prism by the way of gluing.
In this utility model one embodiment, display module is appointing in LCOS display, OLED display and LCD displayAnticipate one.
When display module is LCOS display, LCOS display does not have active illuminating, needs external light source just can go outSending out LCOS display and play image, therefore, miniature display system also includes light source, and described LCOS display is relative with described light sourceArranging, the light that described light source sends exposes to LCOS display, and LCOS display sends polarized light.
When display module is OLED display, the light that OLED display sends does not has polarity, therefore, miniature displaySystem also includes 1/2 wave plate 110, as in figure 2 it is shown, described 1/2 wave plate is arranged between OLED display and described lamp guide, usesPolarized light is become in light OLED display sent.When being embodied as, also can be selected for polaroid and replace 1/2 wave plate.
In other embodiments of this utility model, also can be selected for other display modules, according to the characteristic of display module, determine and beNo increase light source and polaroid.
Referring to Fig. 2 again, the miniature display system being applied in headset equipment also includes magnifier 108, is arranged at instituteStating the diopter lens 105 side away from human eye, described diopter lens is not arranging reflectance coating, and described reflectance coating R is arranged at magnifierAway from the side of human eye, the polarized light after magnifier effect will form the virtual image amplified after entering human eye, it is simple to observerThe image that display module is play can be clearly seen that.
When being embodied as, in order to make optical system structure compact, magnifier 108 and diopter lens 105 are integrated together formationOne optical lens group.
Further, due in micro-optics system in addition to display module, be all transparent configuration, human eye viewing displayCan be additionally seen extraneous things during the image that module is play, after adding magnifier, the extraneous material object that eye-observation can be made to arrive becomes big, because ofThis, in order to warrantor observes observe extraneous in kind indeformable, micro-optics system also includes offset lens 109, fixing connectsDescribed magnifier, the curvature of the curvature of offset lens and optical lens group (magnifier and diopter lens) matches.
Refer to Fig. 2 again, below as a example by display module is as OLED display, illustrate how observer watches OLED to showShow the image that device plays.Light communication process is:
Display module 101 emits beam, and after 1/2 wave plate 110, the light of OLED outgoing is converted to S-polarization light, i.e. lightLine 102 is S-polarization light, and S-polarization light is conducted into the polarization light-dividing surface being mapped to polarization splitting prism 104 through lamp guide 103, and this is inclinedThe light splitting surface that shakes reflects the S-polarization light conducted by lamp guide, is incident to diopter lens 105 through quarter wave plate 106 and adjusts, then incidentAdjusting to magnifier 108, the side increasing degree away from human eye of magnifier one layer has the reflectance coating R of reflectance, after adjustingLight reflect, be incident to the polarization light-dividing surface of polarization splitting prism along incident path, now, S-polarization light is through twiceQuarter wave plate effect retrodeviates polarization state and is become P polarization light from S-polarization light, and P polarization light is directed through polarization light-dividing surface, incides observationIn the eyes of person, thus in human eye, form the virtual image clearly amplified；
The light of external image is after offset lens 109 acts on, by magnifier 108, diopter lens 105 and quarter wave plateThe regulation of 106 enters polarization splitting prism 104, and polarization splitting prism 104 makes partial polarized light pass through, incides observer'sIn eyes, thus in human eye, form the figure clearly of normal size.
Such as Fig. 3, shown in Fig. 4, this utility model in the specific implementation, in order to reduce processor, makes whole miniature simultaneouslyThe outward appearance of display system compares suitable system design, and described lamp guide is one-body molded with polarization splitting prism, is formed such as Fig. 3,4 institutesThe prism 303,403 shown, the inclined-plane of this prism 303,403 has been coated with plated film.
This utility model provide miniature display system be easier to be arranged in headset equipment, by arrange lamp guide,Polarization splitting prism, quarter wave plate, diopter lens and magnifier can make myopia personnel see the image that display module is play, and carryHigh Consumer's Experience effect；By arranging offset lens, it is possible to make external image not have exaggerated effect in entering human eye.
The above is merely to illustrate technical solutions of the utility model, and any those of ordinary skill in the art all can not disobeyCarry on the back under spirit and the scope of the present utility model, above-described embodiment is modified and changes.Therefore, right of the present utility model is protectedThe scope of protecting should be as the criterion depending on right.