CN110488507A - A kind of production method and eyeglass of ring coke free surface lens - Google Patents
A kind of production method and eyeglass of ring coke free surface lens Download PDFInfo
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- CN110488507A CN110488507A CN201910769135.7A CN201910769135A CN110488507A CN 110488507 A CN110488507 A CN 110488507A CN 201910769135 A CN201910769135 A CN 201910769135A CN 110488507 A CN110488507 A CN 110488507A
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/024—Methods of designing ophthalmic lenses
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
- G02C7/044—Annular configuration, e.g. pupil tuned
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
- G02C7/063—Shape of the progressive surface
Abstract
The present invention provides a kind of production method of ring coke free surface lens and the ring coke free surface lens being prepared using the production method, this method constructs a multifocal lens from the angle of periphery defocus prevention and control and power progression, so that the centre of eyeglass is formed with a circular center fixed-focus area, and the periphery fixed-focus area of multiple annulars is formed in center fixed-focus area periphery, the focal power in periphery fixed-focus area is along eyeglass meridian and the gradual change from the inside to the outside of eyeglass trunnion axis；Then a three-dimensional cartesian coordinate system is established by origin of human eye center, sequentially calculates the rise of all the points in each fixed-focus area rear surface from the inside to the outside, finally generate lens posterior surface further according to the rise data of all the points of all fixed-focus areas rear surface.It can be than more gentle from center to edge using the eyeglass that the production method makes.And the design simulation of entire eyeglass meets the regulatory function of normal eye's eyeball when seeing object, and children and teen-age wearing comfort are preferable.
Description
Technical field
The present invention relates to optical mirror slip fields, and in particular to a kind of production method and eyeglass of ring coke free surface lens.
Background technique
Eyes are the vitals that people obtain information, accurately obtain external information for clarity, and adolescent myopia is suffered from
Person just must by correction dioptric correction come improve its regard photosystem, generally use two methods, one is wear optical mirror slip,
Including frame eyeglasses and contact lenses etc.；Another kind is exactly that a certain optical power element of human eye is made to change, and such as uses quasi-molecule
Laser corrective surgery etc..
Single focus eyeglass, Bifocal lenses and progressive multi-focus lens in conventional lenses have respective deficiency.It is single burnt
Point eyeglass needs eyes to make adjusting appropriate due to only having a focal power, close eye, and long periods of wear can generate asthenopia,
And aggravate myopia and eyeball deformation.Bifocal lenses use different luminosity in view near and far apparent time, but by view far region mistake
It can be generated when crossing near reading range domain as jumping, influence the vision of people.Progressive multi-focus lens are from view far field through intervening fade area to view
Near region, focal power gradually, is continuously successively decreased, and when wearing this eyeglass, can be improved the fatigue conditions of eyes to greatest extent, is effectively relieved
Close eye fatigue.But progressive multi-focus lens periphery is there are certain blind area, and progressive multi-focus lens are from center
Gently degree to edge is poor, and children and teen-age wearing comfort are poor, and lens edge is thicker, the prism degree of eyeglass
Also larger.
Summary of the invention
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of system of ring coke free surface lens
Make method and eyeglass.
The present invention provides a kind of production methods of ring coke free surface lens, comprising the following steps:
Step 1: one focal power higher order polynomial of setting prepares the eyeglass that a front surface is smooth surface, by eyeglass
It is divided into the area Liang Ge: positioned at the circular center fixed-focus area of center of lens position, from the edge in center fixed-focus area to the edge of eyeglass,
Focal power according to multiple annulars of focal power higher order polynomial gradual change from the inside to the outside periphery fixed-focus area；
Step 2: establishing a three-dimensional cartesian coordinate system by origin of human eye center, and the center of eyeglass is made to fall in three-dimensional
On the Z axis of rectangular coordinate system, and the meridian of eyeglass is parallel with the Y-axis of three-dimensional cartesian coordinate system, the trunnion axis of eyeglass and three
The X-axis for tieing up rectangular coordinate system is parallel；
Step 3: according to the three-dimensional cartesian coordinate system established in step 2, calculating all the points in the rear surface in center fixed-focus area
Rise, the P0 that sets up an office is any point in the rear surface in center fixed-focus area, then the rise calculation formula of P0 are as follows:
l0=27mm (3)
Wherein, ZcFor Z axis coordinate of the point P0 in three-dimensional cartesian coordinate system, xcFor X of the point P0 in three-dimensional cartesian coordinate system
Axial coordinate, ycFor Y axis coordinate of the point P0 in three-dimensional cartesian coordinate system, Rh0For the radius of curvature of the rear surface in center fixed-focus area,
R0For the radius of curvature of the front surface of eyeglass, f0For the focal length in center fixed-focus area, n is the refractive index of eyeglass, d0For human eye eyeball with
Spacing between lens posterior surface, d0For the center thickness in center fixed-focus area；
Step 4: according to the three-dimensional cartesian coordinate system established in step 2, first calculating in since the fixed-focus area of center
The rise of all the points in the rear surface in periphery fixed-focus area, the P1 that sets up an office are any one in the interior rear surface for playing first periphery fixed-focus area
Point, then the rise calculation formula of P1 are as follows:
The centre of sphere of the interior rear surface for playing first periphery fixed-focus area can be solved in three-dimensional according to formula (4), formula (5)
Y axis coordinate Y in rectangular coordinate systemO,2With Z axis coordinate ZO,2, the rise of P1 is obtained further according to spherical equation:
Wherein, Rh1For the radius of curvature of the rear surface in interior first periphery fixed-focus area, yn,1For interior first periphery
Y axis coordinate of the inside edge point of the rear surface in fixed-focus area in three-dimensional cartesian coordinate system, ZN,1For interior first periphery fixed-focus
Z axis coordinate of the inside edge point of area's rear surface in three-dimensional cartesian coordinate system, YO,2Behind the fixed-focus area of interior first periphery
Y axis coordinate of the centre of sphere on surface in three-dimensional cartesian coordinate system, ZO,2The centre of sphere for interior first periphery fixed-focus area rear surface exists
Z axis coordinate in three-dimensional cartesian coordinate system, ZN,2For the rise of point P1, x1The X-axis for being point P1 in three-dimensional cartesian coordinate system is sat
Mark, y1For Y axis coordinate of the point P1 in three-dimensional cartesian coordinate system；
Step 5: according to the three-dimensional cartesian coordinate system established in step 2, second calculating in since the fixed-focus area of center
The rise of all the points in the rear surface in periphery fixed-focus area, the P2 that sets up an office are any one in the interior rear surface for playing second periphery fixed-focus area
Point, then the rise calculation formula of P2 are as follows:
(yn,2-YO,2)2+(ZN,2-ZO,2)2=Rh1 2 (7)
The ball of the interior rear surface for playing second periphery fixed-focus area can be solved according to formula (7), formula (8), formula (9)
Y axis coordinate Y of the heart in three-dimensional cartesian coordinate systemO,3With Z axis coordinate ZO,3, the rise of P2 is obtained further according to spherical equation:
Wherein, Rh2For the radius of curvature of the rear surface in interior second periphery fixed-focus area, yn,2For interior second periphery
Y axis coordinate of the inside edge point of the rear surface in fixed-focus area in three-dimensional cartesian coordinate system, ZN,2For interior second periphery fixed-focus
Z axis coordinate of the inside edge point of the rear surface in area in three-dimensional cartesian coordinate system, YO,3For interior second periphery fixed-focus area
Y axis coordinate of the centre of sphere of rear surface in three-dimensional cartesian coordinate system, ZO,3For the ball of the rear surface in interior second periphery fixed-focus area
Z axis coordinate of the heart in three-dimensional cartesian coordinate system, ZN,3For the rise of point P2, x2For X-axis of the point P2 in three-dimensional cartesian coordinate system
Coordinate, y2For Y axis coordinate of the point P2 in three-dimensional cartesian coordinate system；
Step 6: according to the three-dimensional cartesian coordinate system established in step 2, third calculating in since the fixed-focus area of center
The rise of all the points in the rear surface in periphery fixed-focus area, the P2 that sets up an office are any one in the interior rear surface for playing third periphery fixed-focus area
Point, then the rise calculation formula of P2 are as follows:
The centre of sphere of the interior rear surface for playing third periphery fixed-focus area can be solved three according to formula (11), formula (12)
Tie up the Y axis coordinate Y in rectangular coordinate systemO,4With Z axis coordinate ZO,4, the rise of P3 is being obtained according to spherical equation:
Wherein, Rh3For the radius of curvature of the rear surface in interior third periphery fixed-focus area, yn,3For interior third periphery
Y axis coordinate of the inside edge point of the rear surface in fixed-focus area in three-dimensional cartesian coordinate system, ZN,3For interior third periphery fixed-focus
Z axis coordinate of the inside edge point of the rear surface in area in three-dimensional cartesian coordinate system, YO,4For interior third periphery fixed-focus area
Y axis coordinate of the centre of sphere of rear surface in three-dimensional cartesian coordinate system, ZO,4For the ball of the rear surface in interior third periphery fixed-focus area
Z axis coordinate of the heart in three-dimensional cartesian coordinate system, ZN,4For the rise of point P2, x3For X-axis of the point P2 in three-dimensional cartesian coordinate system
Coordinate, y3For Y axis coordinate of the point P2 in three-dimensional cartesian coordinate system；
Step 7: according to the three-dimensional cartesian coordinate system established in step 2, from this subcenter fixed-focus area to the edge of eyeglass, by
All the points in the interior rear surface to each periphery fixed-focus area that sequentially calculating is located on the outside of interior second periphery fixed-focus area outside
Rise, the Pi that sets up an office are any point in the interior rear surface for playing i-th of periphery fixed-focus area, then the rise calculation formula of Pi should be modified
Are as follows:
The interior centre of sphere for playing third periphery fixed-focus area rear surface can be solved in three-dimensional according to formula (13), formula (14)
Y axis coordinate Y in rectangular coordinate systemO,i+1With Z axis coordinate ZO,i+1, the rise of Pi is being obtained according to spherical equation:
Wherein, i=2 ... n, fiFor the focal length of interior i-th of periphery fixed-focus area rear surface, RhiIt is fixed for interior i-th of periphery
The radius of curvature of burnt area's rear surface, xn,iFor interior i-th of periphery fixed-focus area rear surface inside edge point in three-dimensional rectangular coordinate
X axis coordinate in system, yn,iFor Y of the inside edge point in three-dimensional cartesian coordinate system of interior i-th of periphery fixed-focus area rear surface
Axial coordinate, ZN,iFor Z axis coordinate of the inside edge point in three-dimensional cartesian coordinate system of interior i-th of periphery fixed-focus area rear surface,
YO,iFor Y axis coordinate of the centre of sphere in three-dimensional cartesian coordinate system of interior (i-1)-th periphery fixed-focus area rear surface, ZO,iIt is interior
Z axis coordinate of the centre of sphere of i-1 periphery fixed-focus area rear surface in three-dimensional cartesian coordinate system, YO,i+1It is fixed for interior i-th of periphery
Y axis coordinate of the centre of sphere of burnt area's rear surface in three-dimensional cartesian coordinate system, ZO,i+1For interior i-th of periphery fixed-focus area rear surface
Z axis coordinate of the centre of sphere in three-dimensional cartesian coordinate system, ZN,iFor the rise of point Pi, xiFor X of the point Pi in three-dimensional cartesian coordinate system
Axial coordinate, yiFor Y axis coordinate of the point Pi in three-dimensional cartesian coordinate system；
Step 8: according to the rise data of all the points in the above-mentioned center fixed-focus area being calculated and periphery fixed-focus area, adopting
The rear surface of eyeglass is generated with interpolation method.
In the production method of provided ring coke free surface lens of the invention, it can also have the following features:
The radius in center fixed-focus area is 2~7mm.
The prepared ring coke free surface lens of above-mentioned production method are utilized the present invention also provides a kind of.
It the production methods of provided ring coke free surface lens and is obtained according to the present invention using the production method
Ring coke free surface lens, wherein the focal power of eyeglass is high by the focal power of setting along eyeglass meridian and eyeglass trunnion axis
Rank multinomial gradual change from the inside to the outside, so that eyeglass can be than more gentle from center to edge.And the design simulation symbol of entire eyeglass
The regulatory function of normal eye's eyeball when seeing object is closed, children and teen-age wearing comfort are preferable.
In addition, lens edge is also relatively thin, the prism degree of eyeglass is also smaller；And the center of eyeglass setting radius be 2~
The center fixed-focus area of 7mm can correct sharp central vision, so that Children and teenager more reasonably makes in use
Use eyeglass.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention middle ring coke free surface lens.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing is applied to the production method of the ring coke free surface lens in the present invention and the ring obtained using the production method
Burnt free surface lens are specifically described.
The production methods of the ring coke free surface lens of the present embodiment the following steps are included:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention middle ring coke free surface lens.
Step 1: as shown in Figure 1, one focal power higher order polynomial of setting, prepares a front surface (backwards to human eye side
Be rear towards human eye side to be preceding) be smooth surface multifocal lens 100, and from periphery defocus prevention and control and power progression
Angle one front surface of building (be rear towards human eye side backwards to human eye side before being) of setting out be the multifocal of smooth surface
Eyeglass is divided into the area Liang Ge: center fixed-focus area 10 and periphery fixed-focus area 20 by eyeglass.
Center fixed-focus area 10 is located at center of lens position, rounded, and radius is 2~7mm.
Periphery fixed-focus area 20 is from from the edge in center fixed-focus area 10 to the edge of eyeglass 100, focal power is along eyeglass meridian
Line 30 and eyeglass trunnion axis 40, according to the focal power higher order polynomial gradual change from the inside to the outside of setting, so that outside center fixed-focus area 10
To the multiple annular compositions being sequentially distributed outside in being formed in week.The focal power in the periphery fixed-focus area 20 of each annular is with the fixed-focus area
Place using eyeglass geometric center as light corresponding to the point that the concentric circles in the center of circle intersects with eyeglass meridian and eyeglass trunnion axis
Focal power higher order polynomial determines.
The focal power at any point in annular region for being located at 10 periphery of center fixed-focus area on eyeglass 100, with mirror
The geometric center of piece 100 is the center of circle, using the linear distance of the point and 100 geometric center of eyeglass as radius, according to this radius size
Judge that the point is in the annular fixed-focus region 20 corresponding to it, focal power is equal to the annular fixed-focus region focal power.
The determination side of the focal power of each point in annular region for being located at 10 periphery of center fixed-focus area on eyeglass 100
Method are as follows: set using the geometric center of eyeglass 100 as the center of circle, made using the point and the linear distance of 100 geometric center of eyeglass by radius
The circle intersected with eyeglass meridian 30 be the point geometry concentric circles, then the focal power of the point be equal to the point geometry concentric circles
With the focal power of the intersection point of eyeglass meridian 30.
Step 2: establishing a three-dimensional cartesian coordinate system by origin of human eye center, and the center of eyeglass is made to fall in three-dimensional
On the Z axis of rectangular coordinate system, and eyeglass meridian 30 is parallel with the Y-axis of three-dimensional cartesian coordinate system, eyeglass trunnion axis 40 and three
The X-axis for tieing up rectangular coordinate system is parallel.
Step 3: according to the three-dimensional cartesian coordinate system established in step 2, calculating in the rear surface in center fixed-focus area 10 and own
The rise of point, the P0 that sets up an office are any point in the rear surface in center fixed-focus area 10, then the rise calculation formula of P0 are as follows:
l0=27mm (3)
Wherein, ZcFor Z axis coordinate of the point P0 in three-dimensional cartesian coordinate system, xcFor X of the point P0 in three-dimensional cartesian coordinate system
Axial coordinate, ycFor Y axis coordinate of the point P0 in three-dimensional cartesian coordinate system, Rh0For the curvature half of the rear surface in center fixed-focus area 10
Diameter, R0For the radius of curvature of the front surface of eyeglass, f0For the focal length in center fixed-focus area 10, n is the refractive index of eyeglass, d0For human eye
Spacing between eyeball and lens posterior surface, d0For the center thickness in center fixed-focus area 10.
Step 4: according to the three-dimensional cartesian coordinate system established in step 2, first calculating in since the center fixed-focus area 10
The rise of all the points in the rear surface in a periphery fixed-focus area 20, the P1 that sets up an office are in the interior rear surface for playing first periphery fixed-focus area 20
Any point, then the rise calculation formula of P1 are as follows:
The centre of sphere of the interior rear surface for playing first periphery fixed-focus area 20 can be solved three according to formula (4), formula (5)
Tie up the Y axis coordinate Y in rectangular coordinate systemO,2With Z axis coordinate ZO,2, the rise of P1 is obtained further according to spherical equation:
Wherein, Rh1For the radius of curvature of the rear surface in interior first periphery fixed-focus area 20, yn,1For interior the first week
Y axis coordinate of the inside edge point of the rear surface in side fixed-focus area 20 in three-dimensional cartesian coordinate system, ZN,1For interior first periphery
Z axis coordinate of the inside edge point of the rear surface in fixed-focus area 20 in three-dimensional cartesian coordinate system, YO,2It is fixed for interior first periphery
Y axis coordinate of the centre of sphere of the rear surface in burnt area 20 in three-dimensional cartesian coordinate system, ZO,2For interior first periphery fixed-focus area 20
Z axis coordinate of the centre of sphere of rear surface in three-dimensional cartesian coordinate system, ZN,2For the rise of point P1, x1It is sat for point P1 at three-dimensional right angle
X axis coordinate in mark system, y1For Y axis coordinate of the point P1 in three-dimensional cartesian coordinate system；
Step 5: according to the three-dimensional cartesian coordinate system established in step 2, second calculating in since the center fixed-focus area 10
The rise of all the points in the rear surface in a periphery fixed-focus area 20, the P2 that sets up an office are in the interior rear surface for playing second periphery fixed-focus area 20
Any point, then the rise calculation formula of P2 are as follows:
(yn,2-YO,2)2+(ZN,2-ZO,2)2=Rh1 2 (7)
The interior rear surface for playing second periphery fixed-focus area 20 can be solved according to formula (7), formula (8), formula (9)
Y axis coordinate Y of the centre of sphere in three-dimensional cartesian coordinate systemO,3With Z axis coordinate ZO,3, the rise of P2 is obtained further according to spherical equation:
Wherein, Rh2For the radius of curvature of the rear surface in interior second periphery fixed-focus area 20, yn,2For interior the second week
Y axis coordinate of the inside edge point of the rear surface in side fixed-focus area 20 in three-dimensional cartesian coordinate system, ZN,2For interior second periphery
Z axis coordinate of the inside edge point of the rear surface in fixed-focus area 20 in three-dimensional cartesian coordinate system, YO,3It is fixed for interior second periphery
Y axis coordinate of the centre of sphere of the rear surface in burnt area 20 in three-dimensional cartesian coordinate system, ZO,3For interior second periphery fixed-focus area 20
Z axis coordinate of the centre of sphere of rear surface in three-dimensional cartesian coordinate system, ZN,3For the rise of point P2, x2It is sat for point P2 at three-dimensional right angle
X axis coordinate in mark system, y2For Y axis coordinate of the point P2 in three-dimensional cartesian coordinate system；
Step 6: according to the three-dimensional cartesian coordinate system established in step 2, third calculating in since the center fixed-focus area 10
The rise of all the points in the rear surface in a periphery fixed-focus area 20, the P2 that sets up an office are in the interior rear surface for playing third periphery fixed-focus area 20
Any point, then the rise calculation formula of P2 are as follows:
Existed according to the centre of sphere that formula (11), formula (12) can solve the interior rear surface for playing third periphery fixed-focus area 20
Y axis coordinate Y in three-dimensional cartesian coordinate systemO,4With Z axis coordinate ZO,4, the rise of P3 is being obtained according to spherical equation:
Wherein, Rh3For the radius of curvature of the rear surface in interior third periphery fixed-focus area 20, yn,3For interior third week
Y axis coordinate of the inside edge point of the rear surface in side fixed-focus area 20 in three-dimensional cartesian coordinate system, ZN,3For interior third periphery
Z axis coordinate of the inside edge point of the rear surface in fixed-focus area 20 in three-dimensional cartesian coordinate system, YO,4It is fixed for interior third periphery
Y axis coordinate of the centre of sphere of the rear surface in burnt area 20 in three-dimensional cartesian coordinate system, ZO,4For interior third periphery fixed-focus area 20
Z axis coordinate of the centre of sphere of rear surface in three-dimensional cartesian coordinate system, ZN,4For the rise of point P2, x3It is sat for point P2 at three-dimensional right angle
X axis coordinate in mark system, y3For Y axis coordinate of the point P2 in three-dimensional cartesian coordinate system；
Step 7: according to the three-dimensional cartesian coordinate system established in step 2, from this subcenter fixed-focus area to the edge of eyeglass, by
It is all in the rear surface in the interior each periphery fixed-focus area 20 for being located at 20 outside of interior second periphery fixed-focus area to sequentially calculating outside
The rise of point, the Pi that sets up an office are any point in the interior rear surface for playing i-th of periphery fixed-focus area 20, then the rise calculation formula of Pi is answered
Modification are as follows:
Existed according to the centre of sphere that formula (13), formula (14) can solve the interior rear surface for playing i-th of periphery fixed-focus area 20
Y axis coordinate Y in three-dimensional cartesian coordinate systemO,i+1With Z axis coordinate ZO,i+1, the rise of Pi is being obtained according to spherical equation:
Wherein, i=2 ... n, fiFor the focal length of the rear surface in interior i-th of periphery fixed-focus area 20, RhiFor interior i-th week
The radius of curvature of the rear surface in side fixed-focus area 20, xn,iInside edge point for the rear surface in interior i-th of periphery fixed-focus area 20 exists
X axis coordinate in three-dimensional cartesian coordinate system, yn,iFor interior i-th of periphery fixed-focus area 20 rear surface inside edge o'clock three
Tie up the Y axis coordinate in rectangular coordinate system, ZN,iFor interior i-th of periphery fixed-focus area 20 rear surface inside edge point in three-dimensional
Z axis coordinate in rectangular coordinate system, YO,iThe centre of sphere for the rear surface in interior (i-1)-th periphery fixed-focus area 20 is sat at three-dimensional right angle
Y axis coordinate in mark system, ZO,iFor interior (i-1)-th periphery fixed-focus area 20 rear surface the centre of sphere in three-dimensional cartesian coordinate system
Z axis coordinate, YO,i+1Y-axis of the centre of sphere in three-dimensional cartesian coordinate system for the rear surface in interior i-th of periphery fixed-focus area 20 is sat
Mark, ZO,i+1For Z axis coordinate of the centre of sphere in three-dimensional cartesian coordinate system of the rear surface in interior i-th of periphery fixed-focus area 20, ZN,iFor
The rise of point Pi, xiFor X axis coordinate of the point Pi in three-dimensional cartesian coordinate system, yiFor Y-axis of the point Pi in three-dimensional cartesian coordinate system
Coordinate；
Step 8: according to all the points in the center fixed-focus area 10 and periphery fixed-focus area 20 that are calculated in above-mentioned steps
Rise data generate the rear surface of eyeglass using existing cubic spline interpolation.
The rear surface of the eyeglass 100 generated in step 8 is free form surface.
To sum up, it is obtained according to the production method of the ring coke free surface lens in the present embodiment and using the production method
Ring coke free surface lens, the focal power of eyeglass is along eyeglass meridian and eyeglass trunnion axis, by the focal power high-order of setting
Multinomial gradual change from the inside to the outside, so that eyeglass can be than more gentle from center to edge.And the design simulation of entire eyeglass meets
The regulatory function of normal eye's eyeball when seeing object, children and teen-age wearing comfort are preferable.
In addition, lens edge is also relatively thin, the prism degree of eyeglass is also smaller；And the center of eyeglass setting radius be 2~
The center fixed-focus area of 7mm can correct sharp central vision, so that Children and teenager more reasonably makes in use
Use eyeglass.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application extremely equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (3)
1. a kind of production method of ring coke free surface lens, which comprises the following steps:
Step 1: one focal power higher order polynomial of setting prepares the eyeglass that a front surface is smooth surface, by the eyeglass
It is divided into the area Liang Ge: positioned at the circular center fixed-focus area of the center of lens position, from the edge in center fixed-focus area to institute
State the edge of eyeglass, focal power according to multiple annulars of the focal power higher order polynomial gradual change from the inside to the outside periphery fixed-focus
Area；
Step 2: establishing a three-dimensional cartesian coordinate system by origin of human eye center, and it is described that the center of the eyeglass is fallen in
On the Z axis of three-dimensional cartesian coordinate system, and the meridian of the eyeglass is parallel with the Y-axis of the three-dimensional cartesian coordinate system, described
The trunnion axis of eyeglass is parallel with the X-axis of the three-dimensional cartesian coordinate system；
Step 3: according to the three-dimensional cartesian coordinate system established in step 2, calculating all the points in the rear surface in center fixed-focus area
Rise, the P0 that sets up an office is any point in the rear surface in center fixed-focus area, then the rise calculation formula of P0 are as follows:
l0=27mm (3)
Wherein, ZcFor Z axis coordinate of the point P0 in three-dimensional cartesian coordinate system, xcThe X-axis for being point P0 in three-dimensional cartesian coordinate system is sat
Mark, ycFor Y axis coordinate of the point P0 in three-dimensional cartesian coordinate system, Rh0For the radius of curvature of the rear surface in center fixed-focus area,
R0For the radius of curvature of the front surface of the eyeglass, f0For the focal length in center fixed-focus area, n is the refractive index of the eyeglass, d0
For the spacing between human eye eyeball and lens posterior surface, d0For the center thickness in center fixed-focus area；
Step 4: according to the three-dimensional cartesian coordinate system established in step 2, first calculating in since the center fixed-focus area
The rise of all the points in the rear surface in periphery fixed-focus area, the P1 that sets up an office are the interior rear surface for playing first periphery fixed-focus area
Upper any point, then the rise calculation formula of P1 are as follows:
The centre of sphere of the interior rear surface for playing first periphery fixed-focus area can be solved in three-dimensional according to formula (4), formula (5)
Y axis coordinate Y in rectangular coordinate systemO,2With Z axis coordinate ZO,2, the rise of P1 is obtained further according to spherical equation:
Wherein, Rh1For the radius of curvature of the rear surface in interior first periphery fixed-focus area, yn,1For interior first week
Y axis coordinate of the inside edge point of the rear surface in side fixed-focus area in three-dimensional cartesian coordinate system, ZN,1For interior first week
Z axis coordinate of the inside edge point of side fixed-focus area rear surface in three-dimensional cartesian coordinate system, YO,2For interior first periphery
Y axis coordinate of the centre of sphere of the rear surface in fixed-focus area in three-dimensional cartesian coordinate system, ZO,2For interior first periphery fixed-focus area
Z axis coordinate of the centre of sphere of rear surface in three-dimensional cartesian coordinate system, ZN,2For the rise of point P1, x1It is sat for point P1 at three-dimensional right angle
X axis coordinate in mark system, y1For Y axis coordinate of the point P1 in three-dimensional cartesian coordinate system；
Step 5: according to the three-dimensional cartesian coordinate system established in step 2, second calculating in since the center fixed-focus area
The rise of all the points in the rear surface in periphery fixed-focus area, the P2 that sets up an office are the interior rear surface for playing second periphery fixed-focus area
Upper any point, then the rise calculation formula of P2 are as follows:
(yn,2-YO,2)2+(ZN,2-ZO,2)2=Rh1 2 (7)
The ball of the interior rear surface for playing second periphery fixed-focus area can be solved according to formula (7), formula (8), formula (9)
Y axis coordinate Y of the heart in three-dimensional cartesian coordinate systemO,3With Z axis coordinate ZO,3, the rise of P2 is obtained further according to spherical equation:
Wherein, Rh2For the radius of curvature of the rear surface in interior second periphery fixed-focus area, yn,2For interior second week
Y axis coordinate of the inside edge point of the rear surface in side fixed-focus area in three-dimensional cartesian coordinate system, ZN,2For interior second week
Z axis coordinate of the inside edge point of the rear surface in side fixed-focus area in three-dimensional cartesian coordinate system, YO,3For interior second week
Y axis coordinate of the centre of sphere of the rear surface in side fixed-focus area in three-dimensional cartesian coordinate system, ZO,3For interior second periphery fixed-focus
Z axis coordinate of the centre of sphere of the rear surface in area in three-dimensional cartesian coordinate system, ZN,3For the rise of point P2, x2It is point P2 in three-dimensional straight
X axis coordinate in angular coordinate system, y2For Y axis coordinate of the point P2 in three-dimensional cartesian coordinate system；
Step 6: according to the three-dimensional cartesian coordinate system established in step 2, third calculating in since the center fixed-focus area
The rise of all the points in the rear surface in periphery fixed-focus area, the P2 that sets up an office are the interior rear surface for playing third periphery fixed-focus area
Upper any point, then the rise calculation formula of P2 are as follows:
The centre of sphere of the interior rear surface for playing third periphery fixed-focus area can be solved three according to formula (11), formula (12)
Tie up the Y axis coordinate Y in rectangular coordinate systemO,4With Z axis coordinate ZO,4, the rise of P3 is being obtained according to spherical equation:
Wherein, Rh3For the radius of curvature of the rear surface in interior third periphery fixed-focus area, yn,3For the interior third week
Y axis coordinate of the inside edge point of the rear surface in side fixed-focus area in three-dimensional cartesian coordinate system, ZN,3For the interior third week
Z axis coordinate of the inside edge point of the rear surface in side fixed-focus area in three-dimensional cartesian coordinate system, YO,4For the interior third week
Y axis coordinate of the centre of sphere of the rear surface in side fixed-focus area in three-dimensional cartesian coordinate system, ZO,4For the interior third periphery fixed-focus
Z axis coordinate of the centre of sphere of the rear surface in area in three-dimensional cartesian coordinate system, ZN,4For the rise of point P2, x3It is point P2 in three-dimensional straight
X axis coordinate in angular coordinate system, y3For Y axis coordinate of the point P2 in three-dimensional cartesian coordinate system；
Step 7: according to the three-dimensional cartesian coordinate system established in step 2, from this subcenter fixed-focus area to the edge of the eyeglass, by
In the interior rear surface to each periphery fixed-focus area that sequentially calculating is located on the outside of interior second periphery fixed-focus area outside
The rise of all the points, the Pi that sets up an office are any point in the interior rear surface for playing i-th of periphery fixed-focus area, then the rise of Pi calculates
Formula should be modified are as follows:
The interior centre of sphere for playing third periphery fixed-focus area rear surface can be solved at three-dimensional right angle according to formula (13), formula (14)
Y axis coordinate Y in coordinate systemO,i+1With Z axis coordinate ZO,i+1, the rise of Pi is being obtained according to spherical equation:
Wherein, i=2 ... n, fiFor the focal length of the rear surface in interior i-th of periphery fixed-focus area, RhiFor interior i-th of periphery fixed-focus
The radius of curvature of the rear surface in area, xn,iInside edge point for the rear surface in interior i-th of periphery fixed-focus area is sat at three-dimensional right angle
X axis coordinate in mark system, yn,iFor interior i-th of periphery fixed-focus area rear surface inside edge point in three-dimensional cartesian coordinate system
In Y axis coordinate, ZN,iFor Z of the inside edge point in three-dimensional cartesian coordinate system of the rear surface in interior i-th of periphery fixed-focus area
Axial coordinate, YO,iFor Y axis coordinate of the centre of sphere in three-dimensional cartesian coordinate system of the rear surface in interior (i-1)-th periphery fixed-focus area,
ZO,iFor Z axis coordinate of the centre of sphere in three-dimensional cartesian coordinate system of the rear surface in interior (i-1)-th periphery fixed-focus area, YO,i+1It is interior
Play Y axis coordinate of the centre of sphere of the rear surface in i-th of periphery fixed-focus area in three-dimensional cartesian coordinate system, ZO,i+1For interior i-th week
Z axis coordinate of the centre of sphere of the rear surface in side fixed-focus area in three-dimensional cartesian coordinate system, ZN,iFor the rise of point Pi, xiExist for point Pi
X axis coordinate in three-dimensional cartesian coordinate system, yiFor Y axis coordinate of the point Pi in three-dimensional cartesian coordinate system；
Step 8: according to the rise number of all the points in the above-mentioned center fixed-focus area being calculated and periphery fixed-focus area
According to generating the rear surface of the eyeglass using interpolation method.
2. the production method of ring coke free surface lens according to claim 1, it is characterised in that:
The radius in center fixed-focus area is 2~7mm.
3. a kind of utilize the prepared ring coke free surface lens of production method described in as claimed in claim 1 or 22.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023241078A1 (en) * | 2022-06-12 | 2023-12-21 | 晶硕光学股份有限公司 | Contact lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652466A (en) * | 2016-04-13 | 2016-06-08 | 上海理工大学 | Manufacturing method for progressive ring focus or full-focus freedom surface lens |
| CN106896525A (en) * | 2017-05-03 | 2017-06-27 | 上海理工大学 | The preparation method of the curved free form surface sunglasses of big base |
| CA2961487A1 (en) * | 2016-03-22 | 2017-09-22 | Johnson & Johnson Vision Care, Inc. | Multifocal lens design and method for preventing and/or slowing myopia progression |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2961487A1 (en) * | 2016-03-22 | 2017-09-22 | Johnson & Johnson Vision Care, Inc. | Multifocal lens design and method for preventing and/or slowing myopia progression |
| CN105652466A (en) * | 2016-04-13 | 2016-06-08 | 上海理工大学 | Manufacturing method for progressive ring focus or full-focus freedom surface lens |
| CN106896525A (en) * | 2017-05-03 | 2017-06-27 | 上海理工大学 | The preparation method of the curved free form surface sunglasses of big base |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023241078A1 (en) * | 2022-06-12 | 2023-12-21 | 晶硕光学股份有限公司 | Contact lens |
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