CN104898277A - Helmet-mounted display provided with mobile mechanism with screen support capable of moving back and forth - Google Patents
Helmet-mounted display provided with mobile mechanism with screen support capable of moving back and forth Download PDFInfo
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- CN104898277A CN104898277A CN201510141292.5A CN201510141292A CN104898277A CN 104898277 A CN104898277 A CN 104898277A CN 201510141292 A CN201510141292 A CN 201510141292A CN 104898277 A CN104898277 A CN 104898277A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
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Abstract
The invention relates to the mechanical field, and relates to a helmet-mounted display provided with a mobile mechanism with a screen support capable of moving back and forth, which comprises a helmet-mounted display body. The helmet-mounted display body comprises a shell; the shell is internally provided with a mobile mechanism; the mobile mechanism comprises a screen support provided with a display screen; the screen support is provided with a round gear; the shell is also internally provided with a driving mechanism driving the round gear to roll; the driving mechanism comprises a first straight rack; the first straight rack is in sliding connection with a first sliding rail, the first straight rack is in engaged connection with the round gear, and the guiding direction of the first sliding rail is the back-forth direction; the shell is also internally provided with a second tack for rolling of the round gear, the second track is provided with a second straight rack, and the second straight rack is in engaged connection with the round gear; and the guiding direction of the first sliding rail and the guiding direction of the second track are parallel. The traditional fixed screen support is improved into a mobile screen support, and the display screen can move back and forth.
Description
Technical field
The present invention relates to mechanical field, be specifically related to virtual implementing helmet.
Background technology
Virtual reality utilizes computer simulation to produce a three-dimensional virtual world, provides user about the simulation of the sense organs such as vision, the sense of hearing, sense of touch, allow user as being personally on the scene, can observe the things in three-dimensional space in time, ad lib.Virtual reality system acts on user by Practical computer teaching by vision, hearing, touch feel etc., makes it produce the interactive virtual environments of sensation on the spot in person.Man-machine interaction in virtual reality is far beyond the traditional mode of keyboard and mouse, and utilize the sensor device of digital helmet, digital glove etc., Three-Dimensional Interaction Technology and speech recognition, phonetic entry technology become important man-machine interaction means.Wherein helmet display unit is the key that virtual reality perception realizes, and the platen bracket in present Helmet Mounted Display is on the market all immovable, and this can bring very large inconvenience to user in experience of the process.
Summary of the invention
The object of the present invention is to provide a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws, to solve the problems of the technologies described above.
Technical matters solved by the invention can realize by the following technical solutions:
A kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws, comprise a Helmet Mounted Display main body, described Helmet Mounted Display main body comprises a housing, it is characterized in that, a travel mechanism is provided with in described housing, described travel mechanism comprises the platen bracket that is provided with display screen, and described platen bracket is provided with a circular gear;
The driving mechanism that the described circular gear of a driving rolls also is provided with in described housing, described driving mechanism comprises the first spur rack, described first spur rack and the first slide rail are slidably connected, and described first spur rack and described circular gear are connected with a joggle, the channeling direction of described first slide rail is fore-and-aft direction;
Also be provided with second track rolled for described circular gear in described housing, described second track is provided with the second spur rack, and described second spur rack and described circular gear are connected with a joggle;
Described first slide rail is parallel with the channeling direction of described second track.
The present invention, by conventional fixed-type platen bracket, improves as movable type, is convenient to move forward and backward display screen, realizes the stop of going up at an arbitrary position, for improving visual experience when human body is viewed and admired.
When using of the present invention, the second spur rack is fixed in frame and keeps maintaining static, and the first spur rack can move forward and backward, and the translation of the first spur rack can drive circular gear to roll, thus realizes seesawing of platen bracket.
Described first spur rack is positioned at the left side of described circular gear, and described second spur rack is positioned at the right side of described circular gear, and the centerline direction of described circular gear is vertical direction.
Or described first spur rack is positioned at the right side of described circular gear, described second spur rack is positioned at the left side of described circular gear, and the centerline direction of described circular gear is vertical direction.
Described driving mechanism comprises adjusting key, and described adjusting key is positioned on the outer wall of described housing, and described adjusting key connects described first spur rack.
The present invention is convenient to the motion state of adjustment first spur rack by adjusting key.
Described adjusting key connects a connecting link, and described adjusting key connects described first spur rack by described connecting link;
The outer wall of described housing offers a chute, the width of described connecting link and the width of described chute match, and the length direction of described chute is parallel to the channeling direction of described first slide rail.
Be convenient to manual adjustments.
Described adjusting key connects a control system, and described control system connects the first motor, and described first motor connects a gear train, and described gear train connects described first spur rack.
Thus realize motorized adjustment.
Be fixed with a spring on the left of described first spur rack, the elasticity direction of described spring is horizontal direction.
The present invention keeps the second spur rack and circular gear to be in engagement all the time by spring.
The left side of described spring is fixedly connected with a boss, and the inwall of described housing is provided with one for the 3rd slide rail of described boss movement, and the channeling direction of described 3rd slide rail is parallel to the channeling direction of described first slide rail.
Allow boss be pressed on all the time on housing under spring force, the friction by boss and the 3rd slide rail realizes the stop that circular gear is gone up at an arbitrary position.
Described boss is connected with a latch mechanism.
The present invention is by being provided with a latch mechanism, thus corresponding adjustment the first spur rack and mirror holder outline engagement.Thus realize self-locking, anti-rolling.
The outer wall of described housing offers a microscler slot to make way.Be convenient to realize self-locking.
Described first slide rail is fixedly connected with described housing, is provided with a roller matched with described first slide rail below described first spur rack.The present invention by roller in the first slide rail thus realize being slidably connected of the first spur rack and housing.
As a kind of preferred version, described platen bracket comprises a vertical support bar, and the center of described circular gear offers a through hole consistent with described support bar external diameter, and described support bar is through described through hole;
The below of described platen bracket is provided with at least two rollers, and be provided with at least two chute groups be parallel to each other in described housing, described chute group and described roller match;
The channeling direction of described chute group is parallel to the channeling direction of described first slide rail.
The present invention's seesawing thus the anterior-posterior translation of driving display screen by circular gear.
As another kind of preferred version, described circular gear is fixedly connected with a display screen, and the center line of described display screen and the centerline of described circular gear are on same vertical line;
A rotating disc is provided with between described display screen and described circular gear, described rotating disc comprises a fixture, a revolving part, described fixture is fixedly connected with described circular gear, described revolving part is fixedly connected with described display screen, described revolving part comprises a rotating shaft, and the center line of described rotating shaft and the centerline of described circular gear are in same vertical line;
Described circular gear is provided with a displacement transducer, institute's displacement sensors is a wireless displacement sensor, a wireless communication module is provided with in institute's displacement sensors, institute's displacement sensors connects a microprocessor system by described wireless communication module wireless telecommunications, and described microprocessor system connects a wireless receiving module matched with described wireless communication module;
Described microprocessor system connects the second motor, and described second motor connects described rotating shaft by a drive disk assembly.
After the present invention detects the anglec of rotation of circular gear by displacement transducer, control the second motor by microprocessor system and rotate corresponding angle, thus realize display screen carries out reverse anglec of rotation rotation relative to circular gear, thus realize seesawing thus the anterior-posterior translation of driving display screen by circular gear.
The anglec of rotation of described circular gear equals the anglec of rotation of described display screen, and the sense of rotation of described circular gear is different from the anglec of rotation of described display screen.
Described second track is provided with two baffle plates be parallel to each other, and is respectively the first baffle plate, second baffle, and described first baffle plate is parallel to surface level, and described first baffle plate is positioned at the top of described second baffle.
The spacing of described first baffle plate and described second baffle equals the thickness of described circular gear;
The lower surface of described first baffle plate and the upper surface of described second baffle are coated with ceramic layer.
Play rust inhibition.In addition, realized by ceramic layer in the process of circular gear rolling, reduce the friction force with the first baffle plate, second baffle.
The front of the display surface of described display screen is provided with an eyepiece, and the front end face of described eyepiece is first surface, and described first surface is towards the display surface of described display screen, and the rear end face of described eyepiece is the second curved surface, and described second curved surface is towards emergent pupil face;
Described first surface central authorities are in outer gibbosity, and the edge of described first surface is inner concavity, and described second curved surface is outer gibbosity.
The goggle structure that the present invention adopts is used for virtual reality device display, optimize the goggle structure of traditional double evagination, under the prerequisite of 2k resolution, in specific spatial dimension, can realize distortion factor lower than 10%, aberration is little, field angle 120 degree, magnification is suitable, can obtain the optical lens of better image quality in extent of the error little on y direction.
Described first surface is the asphericity coefficient of an aspheric surface, described first surface
<maths TranNum="103" num="0001"><![CDATA [<math><mrow><mi>z</mi><mo>=</mo><mfrac><msup><mi>y</mi><mn>2</mn></msup><mrow><mi>r</mi><mrow><mo>(</mo><mn>1</mn><mo>+</mo><msqrt><mn>1</mn><mo>-</mo><mrow><mo>(</mo><mn>1</mn><mo>+</mo><mi>k</mi><mo>)</mo></mrow><msup><mi>y</mi><mn>2</mn></msup><mo>/</mo><msup><mi>r</mi><mn>2</mn></msup></msqrt><mo>)</mo></mrow></mrow></mfrac><mo>+</mo><msup><mi>ay</mi><mn>4</mn></msup><mo>+</mo><msup><mi>by</mi><mn>6</mn></msup><mo>+</mo><msup><mi>cy</mi><mn>8</mn></msup><mo>+</mo><msup><mi>dy</mi><mn>10</mn></msup><mo>+</mo><msup><mi>ey</mi><mn>12</mn></msup><mo>+</mo><msup><mi>fy</mi><mn>14</mn></msup><mo>+</mo><msup><mi>gy</mi><mn>16</mn></msup><mo>+</mo><msup><mi>hy</mi><mn>18</mn></msup><mo>+</mo><msup><mi>jy</mi><mn>20</mn></msup><mo>,</mo></mrow></math>]]></maths>wherein,<tables TranNum="104" num="0001"> <table TranNum="105"> <tgroup TranNum="106" cols="2"> <colspec TranNum="107" colname="c001" colwidth="100%"/> <colspec TranNum="108" colname="c002" colwidth="0%"/> <tbody TranNum="109"> <row TranNum="110"> <entry TranNum="111" morerows="1">R </entry> <entry TranNum="112" morerows="1">20.90 </entry> </row> <row TranNum="113"> <entry TranNum="114" morerows="1">K </entry> <entry TranNum="115" morerows="1">-0.514965 </entry> </row> <row TranNum="116"> <entry TranNum="117" morerows="1">A </entry> <entry TranNum="118" morerows="1">-8.16235e-006 </entry> </row> <row TranNum="119"> <entry TranNum="120" morerows="1">B </entry> <entry TranNum="121" morerows="1">-5.64210e-009 </entry> </row> <row TranNum="122"> <entry TranNum="123" morerows="1">C </entry> <entry TranNum="124" morerows="1">-2.34590e-011 </entry> </row> <row TranNum="125"> <entry TranNum="126" morerows="1">D </entry> <entry TranNum="127" morerows="1">-5.84926e-014 </entry> </row> <row TranNum="128"> <entry TranNum="129" morerows="1">E </entry> <entry TranNum="130" morerows="1">0.00000e+000 </entry> </row> <row TranNum="131"> <entry TranNum="132" morerows="1">F </entry> <entry TranNum="133" morerows="1">0.00000e+000 </entry> </row> <row TranNum="134"> <entry TranNum="135" morerows="1">G </entry> <entry TranNum="136" morerows="1">0.00000e+000 </entry> </row> <row TranNum="137"> <entry TranNum="138" morerows="1">H </entry> <entry TranNum="139" morerows="1">0.00000e+000 </entry> </row> <row TranNum="140"> <entry TranNum="141" morerows="1">J </entry> <entry TranNum="142" morerows="1">0.00000e+000 </entry> </row> </tbody> </tgroup> </table> </tables>
Described second curved surface is an aspheric surface, the asphericity coefficient of described second curved surface
<maths TranNum="145" num="0002"><![CDATA [<math><mrow><mi>z</mi><mo>=</mo><mfrac><msup><mi>y</mi><mn>2</mn></msup><mrow><mi>r</mi><mrow><mo>(</mo><mn>1</mn><mo>+</mo><msqrt><mn>1</mn><mo>-</mo><mrow><mo>(</mo><mn>1</mn><mo>+</mo><mi>k</mi><mo>)</mo></mrow><msup><mi>y</mi><mn>2</mn></msup><mo>/</mo><msup><mi>r</mi><mn>2</mn></msup></msqrt><mo>)</mo></mrow></mrow></mfrac><mo>+</mo><msup><mi>ay</mi><mn>4</mn></msup><mo>+</mo><msup><mi>by</mi><mn>6</mn></msup><mo>+</mo><msup><mi>cy</mi><mn>8</mn></msup><mo>+</mo><msup><mi>dy</mi><mn>10</mn></msup><mo>+</mo><msup><mi>ey</mi><mn>12</mn></msup><mo>+</mo><msup><mi>fy</mi><mn>14</mn></msup><mo>+</mo><msup><mi>gy</mi><mn>16</mn></msup><mo>+</mo><msup><mi>hy</mi><mn>18</mn></msup><mo>+</mo><msup><mi>jy</mi><mn>20</mn></msup><mo>,</mo></mrow></math>]]></maths>wherein,<tables TranNum="146" num="0002"> <table TranNum="147"> <tgroup TranNum="148" cols="2"> <colspec TranNum="149" colname="c001" colwidth="100%"/> <colspec TranNum="150" colname="c002" colwidth="0%"/> <tbody TranNum="151"> <row TranNum="152"> <entry TranNum="153" morerows="1">R </entry> <entry TranNum="154" morerows="1">324.5 </entry> </row> <row TranNum="155"> <entry TranNum="156" morerows="1">K </entry> <entry TranNum="157" morerows="1">0.066702 </entry> </row> <row TranNum="158"> <entry TranNum="159" morerows="1">A </entry> <entry TranNum="160" morerows="1">-1.18590e-005 </entry> </row> <row TranNum="161"> <entry TranNum="162" morerows="1">B </entry> <entry TranNum="163" morerows="1">5.23218e-009 </entry> </row> <row TranNum="164"> <entry TranNum="165" morerows="1">C </entry> <entry TranNum="166" morerows="1">-1.27637e-011 </entry> </row> <row TranNum="167"> <entry TranNum="168" morerows="1">D </entry> <entry TranNum="169" morerows="1">-8.86964e-015 </entry> </row> <row TranNum="170"> <entry TranNum="171" morerows="1">E </entry> <entry TranNum="172" morerows="1">0.00000e+000 </entry> </row> <row TranNum="173"> <entry TranNum="174" morerows="1">F </entry> <entry TranNum="175" morerows="1">0.00000e+000 </entry> </row> <row TranNum="176"> <entry TranNum="177" morerows="1">G </entry> <entry TranNum="178" morerows="1">0.00000e+000 </entry> </row> <row TranNum="179"> <entry TranNum="180" morerows="1">H </entry> <entry TranNum="181" morerows="1">0.00000e+000 </entry> </row> <row TranNum="182"> <entry TranNum="183" morerows="1">J </entry> <entry TranNum="184" morerows="1">0.00000e+000 </entry> </row> </tbody> </tgroup> </table> </tables>
The center thickness of described eyepiece is greater than the edge thickness of described eyepiece; The thickness of described eyepiece increases progressively from center successively to edge;
The center thickness of described eyepiece is 12mm-20mm, and the edge thickness of described eyepiece is 1mm-9mm.
As a kind of preferred version, the center thickness of described eyepiece is 16mm, and the edge thickness of described eyepiece is 5mm.Be convenient to injection molding.
Accompanying drawing explanation
Fig. 1 is part-structure schematic diagram of the present invention;
Fig. 2 is a kind of structural representation of eyepiece of the present invention.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with accompanying drawing, setting forth the present invention further.
See Fig. 1, Fig. 2, a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws, comprise a Helmet Mounted Display main body, Helmet Mounted Display main body comprises a housing, a travel mechanism is provided with in housing, travel mechanism comprises the platen bracket that is provided with display screen, and platen bracket is provided with a circular gear 1; Also be provided with the driving mechanism that a driving circular gear 1 rolls in housing, driving mechanism comprises the first spur rack 3, first spur rack 3 and the first slide rail is slidably connected, and the first spur rack 3 is connected with a joggle with circular gear 1, and the channeling direction of the first slide rail is fore-and-aft direction; Also be provided with second track rolled for circular gear 1 in housing, the second track is provided with the second spur rack 4, second spur rack 4 and is connected with a joggle with circular gear 1; First slide rail is parallel with the channeling direction of the second track.The present invention, by conventional fixed-type platen bracket, improves as movable type, is convenient to move forward and backward display screen, realizes the stop of going up at an arbitrary position, for improving visual experience when human body is viewed and admired.When using of the present invention, the second spur rack 4 is fixed in frame and keeps maintaining static, and the first spur rack 3 can move forward and backward, and the translation of the first spur rack 3 can drive circular gear 1 to roll, thus realizes seesawing of platen bracket.
First spur rack is positioned at the left side of circular gear, and the second spur rack is positioned at the right side of circular gear, and the centerline direction of circular gear is vertical direction.Or the first spur rack is positioned at the right side of circular gear, the second spur rack is positioned at the left side of circular gear, and the centerline direction of circular gear is vertical direction.
Driving mechanism comprises adjusting key, and adjusting key is positioned on the outer wall of housing, and adjusting key connects the first spur rack 3.The present invention is convenient to the motion state of adjustment first spur rack 3 by adjusting key.
Adjusting key connects a connecting link, and adjusting key connects the first spur rack 3 by connecting link; The outer wall of housing offers a chute, the width of connecting link and the width of chute match, and the length direction of chute is parallel to the channeling direction of the first slide rail.Be convenient to manual adjustments.
Adjusting key connects a control system, and control system connects the first motor, and the first motor connects a gear train, and gear train connects the first spur rack 3.Thus realize motorized adjustment.
Be fixed with a spring 5 on the left of first spur rack 3, the elasticity direction of spring 5 is horizontal direction.The present invention keeps the second spur rack 4 to be in engagement all the time with circular gear 1 by spring 5.
The left side of spring 5 is fixedly connected with a boss 6, and the inwall of housing is provided with one for the 3rd slide rail of boss 6 movement, and the channeling direction of the 3rd slide rail is parallel to the channeling direction of the first slide rail.Under the effect of spring 5 power, allow boss 6 be pressed on all the time on housing, the friction by boss 6 and the 3rd slide rail realizes the stop that circular gear 1 is gone up at an arbitrary position.
Boss 6 is connected with a latch mechanism.The present invention is by being provided with a latch mechanism, thus corresponding adjustment first spur rack 3 and mirror holder outline engagement.Thus realize self-locking, anti-rolling.
The outer wall of housing offers a microscler slot to make way.Be convenient to realize self-locking.First slide rail is fixedly connected with housing, is provided with one and first roller that match of slide rail below the first spur rack 3.The present invention by roller in the first slide rail thus realize being slidably connected of the first spur rack 3 and housing.
As a kind of preferred version, platen bracket comprises a vertical support bar, and the center of circular gear offers a through hole consistent with support bar external diameter, and support bar is through through hole; The below of platen bracket is provided with at least two rollers, and be provided with at least two chute groups be parallel to each other in housing, chute group and roller match; The channeling direction of chute group is parallel to the channeling direction of the first slide rail.The present invention's seesawing thus the anterior-posterior translation of driving display screen by circular gear 1.
As another kind of preferred version, circular gear 1 is fixedly connected with a display screen, and the center line of display screen and the centerline of circular gear 1 are on same vertical line; A rotating disc is provided with between display screen and circular gear 1, rotating disc comprises a fixture, a revolving part, and fixture is fixedly connected with circular gear 1, and revolving part is fixedly connected with display screen, revolving part comprises a rotating shaft, and the center line of rotating shaft and the centerline of circular gear 1 are in same vertical line; Circular gear 1 is provided with a displacement transducer, displacement transducer is a wireless displacement sensor, a wireless communication module is provided with in displacement transducer, displacement transducer connects a microprocessor system by wireless communication module wireless telecommunications, and microprocessor system connects a wireless receiving module matched with wireless communication module; Microprocessor system connects one second motor, and the second motor is by a drive disk assembly connection rotating shaft.After the present invention detects the anglec of rotation of circular gear 1 by displacement transducer, control the second motor by microprocessor system and rotate corresponding angle, thus realize display screen carries out reverse anglec of rotation rotation relative to circular gear 1, thus realize seesawing thus the anterior-posterior translation of driving display screen by circular gear 1.
The anglec of rotation of circular gear 1 equals the anglec of rotation of display screen, and the sense of rotation of circular gear 1 is different from the anglec of rotation of display screen.
Second track is provided with two baffle plates be parallel to each other, and is respectively the first baffle plate, second baffle, and the first baffle plate is parallel to surface level, and the first baffle plate is positioned at the top of second baffle.The spacing of the first baffle plate and second baffle equals the thickness of circular gear; The lower surface of the first baffle plate and the upper surface of second baffle are coated with ceramic layer.Play rust inhibition.In addition, realized by ceramic layer in the process of circular gear rolling, reduce the friction force with the first baffle plate, second baffle.
The front of the display surface of display screen is provided with an eyepiece, and the front end face of eyepiece is first surface 11, and first surface 11 is towards the display surface of display screen, and the rear end face of eyepiece is that the second curved surface 12, second curved surface 12 is towards emergent pupil face; First surface 11 central authorities are in outer gibbosity, and the edge of first surface 11 is inner concavity, and the second curved surface 12 is in outer gibbosity.The goggle structure that the present invention adopts is used for virtual reality device display, optimize the goggle structure of traditional double evagination, under the prerequisite of 2k resolution, in specific spatial dimension, can realize distortion factor lower than 10%, aberration is little, field angle 120 degree, magnification is suitable, can obtain the optical lens of better image quality in extent of the error little on y direction.
First surface 11 is asphericity coefficients of an aspheric surface, first surface 11
<maths TranNum="209" num="0003"><![CDATA [<math><mrow><mi>z</mi><mo>=</mo><mfrac><msup><mi>y</mi><mn>2</mn></msup><mrow><mi>r</mi><mrow><mo>(</mo><mn>1</mn><mo>+</mo><msqrt><mn>1</mn><mo>-</mo><mrow><mo>(</mo><mn>1</mn><mo>+</mo><mi>k</mi><mo>)</mo></mrow><msup><mi>y</mi><mn>2</mn></msup><mo>/</mo><msup><mi>r</mi><mn>2</mn></msup></msqrt><mo>)</mo></mrow></mrow></mfrac><mo>+</mo><msup><mi>ay</mi><mn>4</mn></msup><mo>+</mo><msup><mi>by</mi><mn>6</mn></msup><mo>+</mo><msup><mi>cy</mi><mn>8</mn></msup><mo>+</mo><msup><mi>dy</mi><mn>10</mn></msup><mo>+</mo><msup><mi>ey</mi><mn>12</mn></msup><mo>+</mo><msup><mi>fy</mi><mn>14</mn></msup><mo>+</mo><msup><mi>gy</mi><mn>16</mn></msup><mo>+</mo><msup><mi>hy</mi><mn>18</mn></msup><mo>+</mo><msup><mi>jy</mi><mn>20</mn></msup><mo>,</mo></mrow></math>]]></maths>wherein,<tables TranNum="210" num="0003"> <table TranNum="211"> <tgroup TranNum="212" cols="2"> <colspec TranNum="213" colname="c001" colwidth="100%"/> <colspec TranNum="214" colname="c002" colwidth="0%"/> <tbody TranNum="215"> <row TranNum="216"> <entry TranNum="217" morerows="1">R </entry> <entry TranNum="218" morerows="1">20.90 </entry> </row> <row TranNum="219"> <entry TranNum="220" morerows="1">K </entry> <entry TranNum="221" morerows="1">-0.514965 </entry> </row> <row TranNum="222"> <entry TranNum="223" morerows="1">A </entry> <entry TranNum="224" morerows="1">-8.16235e-006 </entry> </row> <row TranNum="225"> <entry TranNum="226" morerows="1">B </entry> <entry TranNum="227" morerows="1">-5.64210e-009 </entry> </row> <row TranNum="228"> <entry TranNum="229" morerows="1">C </entry> <entry TranNum="230" morerows="1">-2.34590e-011 </entry> </row> <row TranNum="231"> <entry TranNum="232" morerows="1">D </entry> <entry TranNum="233" morerows="1">-5.84926e-014 </entry> </row> <row TranNum="234"> <entry TranNum="235" morerows="1">E </entry> <entry TranNum="236" morerows="1">0.00000e+000 </entry> </row> <row TranNum="237"> <entry TranNum="238" morerows="1">F </entry> <entry TranNum="239" morerows="1">0.00000e+000 </entry> </row> <row TranNum="240"> <entry TranNum="241" morerows="1">G </entry> <entry TranNum="242" morerows="1">0.00000e+000 </entry> </row> <row TranNum="243"> <entry TranNum="244" morerows="1">H </entry> <entry TranNum="245" morerows="1">0.00000e+000 </entry> </row> <row TranNum="246"> <entry TranNum="247" morerows="1">J </entry> <entry TranNum="248" morerows="1">0.00000e+000 </entry> </row> </tbody> </tgroup> </table> </tables>
Second curved surface 12 is aspheric surfaces, the asphericity coefficient of the second curved surface 12
<maths TranNum="251" num="0004"><![CDATA [<math><mrow><mi>z</mi><mo>=</mo><mfrac><msup><mi>y</mi><mn>2</mn></msup><mrow><mi>r</mi><mrow><mo>(</mo><mn>1</mn><mo>+</mo><msqrt><mn>1</mn><mo>-</mo><mrow><mo>(</mo><mn>1</mn><mo>+</mo><mi>k</mi><mo>)</mo></mrow><msup><mi>y</mi><mn>2</mn></msup><mo>/</mo><msup><mi>r</mi><mn>2</mn></msup></msqrt><mo>)</mo></mrow></mrow></mfrac><mo>+</mo><msup><mi>ay</mi><mn>4</mn></msup><mo>+</mo><msup><mi>by</mi><mn>6</mn></msup><mo>+</mo><msup><mi>cy</mi><mn>8</mn></msup><mo>+</mo><msup><mi>dy</mi><mn>10</mn></msup><mo>+</mo><msup><mi>ey</mi><mn>12</mn></msup><mo>+</mo><msup><mi>fy</mi><mn>14</mn></msup><mo>+</mo><msup><mi>gy</mi><mn>16</mn></msup><mo>+</mo><msup><mi>hy</mi><mn>18</mn></msup><mo>+</mo><msup><mi>jy</mi><mn>20</mn></msup><mo>,</mo></mrow></math>]]></maths>wherein,<tables TranNum="252" num="0004"> <table TranNum="253"> <tgroup TranNum="254" cols="2"> <colspec TranNum="255" colname="c001" colwidth="100%"/> <colspec TranNum="256" colname="c002" colwidth="0%"/> <tbody TranNum="257"> <row TranNum="258"> <entry TranNum="259" morerows="1">R </entry> <entry TranNum="260" morerows="1">324.5 </entry> </row> <row TranNum="261"> <entry TranNum="262" morerows="1">K </entry> <entry TranNum="263" morerows="1">0.066702 </entry> </row> <row TranNum="264"> <entry TranNum="265" morerows="1">A </entry> <entry TranNum="266" morerows="1">-1.18590e-005 </entry> </row> <row TranNum="267"> <entry TranNum="268" morerows="1">B </entry> <entry TranNum="269" morerows="1">5.23218e-009 </entry> </row> <row TranNum="270"> <entry TranNum="271" morerows="1">C </entry> <entry TranNum="272" morerows="1">-1.27637e-011 </entry> </row> <row TranNum="273"> <entry TranNum="274" morerows="1">D </entry> <entry TranNum="275" morerows="1">-8.86964e-015 </entry> </row> <row TranNum="276"> <entry TranNum="277" morerows="1">E </entry> <entry TranNum="278" morerows="1">0.00000e+000 </entry> </row> <row TranNum="279"> <entry TranNum="280" morerows="1">F </entry> <entry TranNum="281" morerows="1">0.00000e+000 </entry> </row> <row TranNum="282"> <entry TranNum="283" morerows="1">G </entry> <entry TranNum="284" morerows="1">0.00000e+000 </entry> </row> <row TranNum="285"> <entry TranNum="286" morerows="1">H </entry> <entry TranNum="287" morerows="1">0.00000e+000 </entry> </row> <row TranNum="288"> <entry TranNum="289" morerows="1">J </entry> <entry TranNum="290" morerows="1">0.00000e+000 </entry> </row> </tbody> </tgroup> </table> </tables>
The center thickness of eyepiece is greater than the edge thickness of eyepiece; The thickness of eyepiece increases progressively from center successively to edge; The center thickness of eyepiece is 12mm-20mm, and the edge thickness of eyepiece is 1mm-9mm.
As a kind of preferred version, the center thickness of eyepiece is 16mm, and the edge thickness of eyepiece is 5mm.Be convenient to injection molding.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. one kind is provided with the Helmet Mounted Display of the travel mechanism that platen bracket seesaws, comprise a Helmet Mounted Display main body, described Helmet Mounted Display main body comprises a housing, it is characterized in that, a travel mechanism is provided with in described housing, described travel mechanism comprises the platen bracket that is provided with display screen, and described platen bracket is provided with a circular gear;
The driving mechanism that the described circular gear of a driving rolls also is provided with in described housing, described driving mechanism comprises the first spur rack, described first spur rack and the first slide rail are slidably connected, and described first spur rack and described circular gear are connected with a joggle, the channeling direction of described first slide rail is fore-and-aft direction;
Also be provided with second track rolled for described circular gear in described housing, described second track is provided with the second spur rack, and described second spur rack and described circular gear are connected with a joggle;
Described first slide rail is parallel with the channeling direction of described second track.
2. a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws according to claim 1, it is characterized in that: described driving mechanism comprises adjusting key, described adjusting key is positioned on the outer wall of described housing, and described adjusting key connects described first spur rack.
3. a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws according to claim 2, is characterized in that: described adjusting key connects a connecting link, and described adjusting key connects described first spur rack by described connecting link;
The outer wall of described housing offers a chute, the width of described connecting link and the width of described chute match, and the length direction of described chute is parallel to the channeling direction of described first slide rail.
4. a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws according to claim 2, it is characterized in that: described adjusting key connects a control system, described control system connects the first motor, described first motor connects a gear train, and described gear train connects described first spur rack.
5. a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws according to claim 1, is characterized in that: be fixed with a spring on the left of described first spur rack, the elasticity direction of described spring is horizontal direction;
The left side of described spring is fixedly connected with a boss, and the inwall of described housing is provided with one for the 3rd slide rail of described boss movement, and the channeling direction of described 3rd slide rail is parallel to the channeling direction of described first slide rail.
6. a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws according to claim 5, is characterized in that: the outer wall of described housing offers a microscler slot to make way.
7. a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws according to claim 1, it is characterized in that: described platen bracket comprises a vertical support bar, the center of described circular gear offers a through hole consistent with described support bar external diameter, and described support bar is through described through hole;
The below of described platen bracket is provided with at least two rollers, and be provided with at least two chute groups be parallel to each other in described housing, described chute group and described roller match;
The channeling direction of described chute group is parallel to the channeling direction of described first slide rail.
8. a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws according to claim 1, it is characterized in that: described circular gear is fixedly connected with a display screen, the center line of described display screen and the centerline of described circular gear are on same vertical line;
A rotating disc is provided with between described display screen and described circular gear, described rotating disc comprises a fixture, a revolving part, described fixture is fixedly connected with described circular gear, described revolving part is fixedly connected with described display screen, described revolving part comprises a rotating shaft, and the center line of described rotating shaft and the centerline of described circular gear are in same vertical line;
Described circular gear is provided with a displacement transducer, institute's displacement sensors is a wireless displacement sensor, a wireless communication module is provided with in institute's displacement sensors, institute's displacement sensors connects a microprocessor system by described wireless communication module wireless telecommunications, and described microprocessor system connects a wireless receiving module matched with described wireless communication module;
Described microprocessor system connects the second motor, and described second motor connects described rotating shaft by a drive disk assembly.
9. a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws according to claim 1, it is characterized in that: the front of the display surface of described display screen is provided with an eyepiece, the front end face of described eyepiece is first surface, described first surface is towards the display surface of described display screen, the rear end face of described eyepiece is the second curved surface, and described second curved surface is towards emergent pupil face;
Described first surface central authorities are in outer gibbosity, and the edge of described first surface is inner concavity, and described second curved surface is outer gibbosity.
10. a kind of Helmet Mounted Display being provided with the travel mechanism that platen bracket seesaws according to claim 9, is characterized in that: described first surface is the asphericity coefficient of an aspheric surface, described first surface
wherein,
，
Described second curved surface is an aspheric surface, the asphericity coefficient of described second curved surface
wherein,
。
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