CN204374515U - A kind of head mounted display be convenient to ametropia patient and used - Google Patents

A kind of head mounted display be convenient to ametropia patient and used Download PDF

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Publication number
CN204374515U
CN204374515U CN201420374488.XU CN201420374488U CN204374515U CN 204374515 U CN204374515 U CN 204374515U CN 201420374488 U CN201420374488 U CN 201420374488U CN 204374515 U CN204374515 U CN 204374515U
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Prior art keywords
lens
display
eyepiece
catoptron
head
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Expired - Fee Related
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CN201420374488.XU
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Chinese (zh)
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刘书戬
胡梦雅
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刘书戬
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Abstract

The utility model relates to a kind of head mounted display, especially relates to a kind of head mounted display be convenient to ametropia patient and used, comprises mirror holder, display unit and optics module; It is characterized in that: described display unit is arranged on above described mirror holder; Described optics module is used for the eyes of the image projection of described display unit to user, it comprises eyepiece, object lens, the first catoptron and the second catoptron, described object lens are between described display unit and the first catoptron, and described eyepiece is between described first catoptron and the second catoptron; On front side of described object lens or rear side be provided with band foraminate opaque baffle plate or catch, described first catoptron for will through the light reflection of described aperture to described eyepiece, described eyepiece focus on described light and by described second catoptron by described light reflection to eyes place.The utility model has higher universality, the features such as cost is lower, practicality, and ametropia patient still can normally use when not wearing glasses.

Description

A kind of head mounted display be convenient to ametropia patient and used
Technical field
The present invention relates to a kind of head mounted display, especially relate to a kind of head mounted display be convenient to ametropia patient and used.
Background technology
Head mounted display (as Google's glasses) is a kind of portable individual video device, is convenient for people to watch video display video whenever and wherever possible, the not busy one of amusement body.At present, in known head mounted display, from the simple eye angle of left eye or right eye, liquid crystal for showing image is relative fixing with optics module position on light path direction of transfer of playing Nonlinear magnify effect, the user that usually can only adapt to fixing a kind of eyesight uses, the user suffering from myopia, long sight and presbyopic eyesight wears head mounted display in bore hole situation, then cannot the image of normal display in normal observation to head mounted display or word.If above-mentioned user removes the image that shows in viewing head head mounted displays and word by the glasses worn for correcting defects of vision, then most of user can not feel like oneself due to glasses and the wearing superposition of head mounted display, the volume of whole product is very large, light not, cause comfort to reduce.Even if some head mounted display is by embedding the user deacclimatizing different eyesight with dioptric eyeglass, but once selectedly determine dioptric eyeglass under this mode, then the user of other different eyesights is just difficult to adapt to, and reduces the universality of product.
Pinhole imaging system principle, that all light by making eyes receive are through one or more aperture, eventually through light invest retina through the center of eye lens, thus reach the object allowing the people of vision disorder in various degree can see almost identical visual effect.According to above-mentioned principle, the head mounted display product that pervasive degree is higher can be obtained.
Chinese invention patent ZL200820059514.4 disclose a kind of head mounted display, comprise mirror body, liquid crystal micro display, supporter and optics module, described optics module comprises lens, outer lens barrel and inner lens cone, inside and outside lens barrel is socketed mutually, described liquid crystal micro display is connected to one end of outer lens barrel, and described lens are placed in inner lens cone ... described lens are placed in inner lens cone one end away from liquid crystal micro display.
Chinese invention patent ZL 200920038141.7 disclose a kind of adjustable head-worn display, comprise mirror holder, liquid crystal micro display group, lens combination and support member, wherein liquid crystal micro display group, lens combination and support member are positioned at mirror holder, described liquid crystal micro display group is connected with lens combination by support member, described support member is positioned at the both sides of lens combination, is structure as a whole with lens combination; Described liquid crystal micro display group is movably connected on support member.
Chinese invention patent ZL200980128222.9 disclose a kind of head mounted display, comprising: lens body, and described lens body is towards the eyeball of user; Display unit, described display unit is arranged in described lens body, and projects image onto eyeball; And image transmission unit, described image transmission unit is to be arranged in described lens body with described display unit at a distance of the mode of predetermined distance, wherein, described image transmission unit has the aperture be formed in wherein, thus by described aperture by described image guided on eyeball.
Above-mentioned three kinds of head mounted displays all have employed pinhole imaging system principle, but are all that display unit and optics module are arranged in picture frame, both unsightly, too thick and heavy again, and the bridge of the nose of compressing user causes pain; Topmost defect is that the display unit of above-mentioned head mounted display has blocked front sight line, so be suitable only for viewing of sitting quietly, can not can walk while see as Google's glasses, can watch, other things can be done again, so above-mentioned head mounted display function singleness, to be difficult to accept by Vehicles Collected from Market.
Summary of the invention
For overcoming the deficiencies in the prior art part, the invention provides a kind of head mounted display be convenient to ametropia patient and used, the ametropia patient of different eyesight is can be used for use in the mode of similar Google glasses, significantly improve universality and the practicality of head mounted display, solve the defect of existing product.
The technical solution adopted in the present invention is: a kind of head mounted display be convenient to ametropia patient and used, comprises mirror holder, display unit and optics module; Described display unit is arranged on above described mirror holder; Described optics module is used for the eyes of the image projection of described display unit to user, it comprises eyepiece, object lens, the first catoptron and the second catoptron, described object lens are between described display unit and the first catoptron, and described eyepiece is between described first catoptron and the second catoptron; On front side of described object lens or rear side be provided with band foraminate opaque baffle plate or catch, described first catoptron for will through the light reflection of described aperture to described eyepiece, described eyepiece focus on described light and by described second catoptron by described light reflection to eyes place.
Further, the focal length of described eyepiece is made to be f1, the focal length of described object lens is f2, the distance of eyes and described eyepiece is L1, the distance of described object lens and described eyepiece is L2, the distance of described object lens and described display unit is L3, then the distance L1 of eyes and described eyepiece, the distance L2 of described object lens and described eyepiece answers coincidence formula restriction.This required distance can ensure that the pixel light beam diameter received is the thinnest, and the diameter of light beam is no more than 1mm.
Further, make the focal length of described object lens be f2, the distance of described object lens and described display unit is L3, and the distance L3 of described object lens and described display unit answers coincidence formula restriction.This required distance can keep the pixel light that receives the most parallel.
Inventive principle: the lighttight small pieces with aperture (being no more than 1mm diameter) are against eyes and is placed at the moment, we can see the picture of real world like this, and ametropia patient (such as myopia) also can see real world clearly in this way when not wearing glasses, this adds resolution because aperture significantly reduces crystalline lens to the abnormal focusing of light.The head-mounted display that ametropia patient uses, want to obtain good display effect, do not think again the focus adjusting mechanism of subsidiary complexity, demand fulfillment two conditions: first condition is that one group of light beam of a pixel wants thin, the diameter of light beam is no more than 1mm, and through the CC part of human eye; Second condition is that one group of light of a pixel is parallel.Light sends from display unit, first through object lens and aperture, then enters eyes through eyepiece, light can make the light beam of each pixel attenuate when small holes, by controlling the diameter of aperture, beam diameter when light arrival eyes can be controlled, control it and be no more than 1mm.Light is through small holes and eyepiece, and make each light beam finally beat CC to human eye, light makes each light beam be directional light through object lens and eyepiece.What the first catoptron and the second catoptron played is the transmission direction changing light, makes head-mounted display compact conformation.
Beneficial effect: compared to existing technology, this invention has following advantage:
(1) have higher universality compared to existing technology, the people of the vision disorder of the non-order of severity still can normally use when not wearing glasses.
(2) cost is lower, does not use the means such as feedback here, has just used a light path to solve ametropia problem, avoided the feedback method involved great expense.
(3) no matter the people of twenty-twenty vision or ametropia patient, almost identical experience can be had.
(4) practical, minisize pick-up head can be integrated in temple simultaneously, reaches the result of use similar to Google glasses.
Accompanying drawing explanation
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is schematic perspective view of the present invention,
Fig. 2 is schematic diagram of the present invention,
Fig. 3 is light path schematic diagram of the present invention.
In figure: 1, mirror holder, 2, display unit, 3, object lens, the 4, first catoptron, 5, eyepiece, the 6, second catoptron, 7, be with foraminate opaque baffle plate.
Embodiment
See Fig. 1,2, a kind of head mounted display be convenient to ametropia patient and used, comprises mirror holder 1, display unit 2 and optics module; Mirror holder 1 both sides are respectively equipped with temple, and display unit 2 is arranged on the top of mirror holder 1.Optics module is used for the eyes of the image projection of display unit 2 to user, it comprises object lens 3, first catoptron 4, eyepiece 5 and the second catoptron 6, object lens 3 are between display unit 2 and the first catoptron 4, and eyepiece 5 is between the first catoptron 4 and the second catoptron 6; On front side of object lens 3 or rear side be provided with band foraminate opaque baffle plate 7 or catch, the first catoptron 4 for will through the light reflection of aperture to eyepiece 5, eyepiece 5 focused ray and by the second catoptron 6 by light reflection to eyes place.Aperture on opaque baffle plate 7 or catch is corresponding with the center of display unit 2, and the quantity of aperture can be one, also can be multiple.
Image-forming principle of the present invention as shown in Figure 3, light sends from display unit 2, aperture first on object lens 3 with opaque baffle plate 7, again through eyepiece 5, enter eyes, we can see the picture of real world like this, and ametropia patient (such as myopia) also can see real world clearly in this way when not wearing glasses, and this adds resolution because aperture significantly reduces crystalline lens to the abnormal focusing of light.
The head-mounted display that ametropia patient uses, want to obtain good display effect, do not think again the focus adjusting mechanism of subsidiary complexity, demand fulfillment two conditions: first condition is that one group of light beam of a pixel wants thin, the diameter of light beam is no more than 1mm, and through the CC part of human eye.Due to light through small holes time the light beam of each pixel can be made to attenuate, by controlling the diameter of aperture, beam diameter time light arrives eyes can be controlled, controls it and be no more than 1mm.Second condition is that one group of light of a pixel is parallel.Light sends from display unit 2, first through object lens 3 and aperture, then enters eyes through eyepiece 5, and light is through small holes and eyepiece 5, and make each light beam finally beat CC to human eye, light makes each light beam be directional light through object lens 3 and eyepiece 5.What the first catoptron 4 and the second catoptron 6 played is the transmission direction changing light, makes head-mounted display compact conformation.
The formula of two conditions in this technology is expressed as follows:
As Fig. 3, make the focal length of eyepiece 5 be f1, the focal length of object lens 3 is f2, and the distance of eyes and eyepiece 5 is L1, and object lens 3 are L2 with the distance of eyepiece 5, and object lens 3 are L3 with the distance of display unit 2.In order to meet first condition, then the distance L1 of eyes and eyepiece 5, and object lens 3 answers coincidence formula with the distance L2 of eyepiece 5 restriction.
In order to meet second condition, object lens 3 answer coincidence formula with the distance L3 of display unit 2 restriction.
Even if above-mentioned two conditions only meet one of them, still can improve display effect, if two all satisfied, then reach optimal display result.
The present invention can be used for various head mounted display, comprises transformation and the distortion of Google's glasses.Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalents thereof.

Claims (5)

1. be convenient to the head mounted display that ametropia patient uses, comprise mirror holder, display unit and optics module, it is characterized in that: described display unit is arranged on above described mirror holder; Described optics module is used for the eyes of the image projection of described display unit to user, it comprises eyepiece, object lens, the first catoptron and the second catoptron, described object lens are between described display unit and the first catoptron, and described eyepiece is between described first catoptron and the second catoptron; On front side of described object lens or rear side be provided with band foraminate opaque baffle plate or catch, described first catoptron for will through the light reflection of described aperture to described eyepiece, described eyepiece focus on described light and by described second catoptron by described light reflection to eyes place.
2. according to claim 1 a kind of be convenient to ametropia patient use head mounted display, it is characterized in that: make the focal length of described eyepiece for (f1), the distance of eyes and described eyepiece is (L1), the distance of described object lens and described eyepiece is (L2), the then distance (L1) of eyes and described eyepiece, and the distance of described object lens and described eyepiece (L2) answers coincidence formula restriction.
3. a kind of head mounted display be convenient to ametropia patient and used according to any one of claim 1 or 2, it is characterized in that: make the focal length of described object lens for (f2), the distance of described object lens and described display unit is (L3), then the distance (L3) of described object lens and described display unit answers coincidence formula restriction.
4. a kind of head mounted display be convenient to ametropia patient and used according to claim 1, is characterized in that: the aperture on described opaque baffle plate or catch is corresponding with the center of described display unit.
5. according to claim 4 a kind of be convenient to ametropia patient use head mounted display, it is characterized in that: the quantity of described aperture is one or more.
CN201420374488.XU 2014-07-08 2014-07-08 A kind of head mounted display be convenient to ametropia patient and used Expired - Fee Related CN204374515U (en)

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CN201420374488.XU CN204374515U (en) 2014-07-08 2014-07-08 A kind of head mounted display be convenient to ametropia patient and used

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Application Number Priority Date Filing Date Title
CN201420374488.XU CN204374515U (en) 2014-07-08 2014-07-08 A kind of head mounted display be convenient to ametropia patient and used

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104076515A (en) * 2014-07-08 2014-10-01 刘书戬 Head-mounted displayer conveniently used by ametropia patient

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104076515A (en) * 2014-07-08 2014-10-01 刘书戬 Head-mounted displayer conveniently used by ametropia patient

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