CN110549586A - Lens molding method, lens mold and lens - Google Patents
Lens molding method, lens mold and lens Download PDFInfo
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- CN110549586A CN110549586A CN201810537254.5A CN201810537254A CN110549586A CN 110549586 A CN110549586 A CN 110549586A CN 201810537254 A CN201810537254 A CN 201810537254A CN 110549586 A CN110549586 A CN 110549586A
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- molding surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/306—Moulds with means for forming a rim
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0016—Lenses
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application provides a lens molding method, a lens mold and a lens. The lens molding method comprises: heating the lens blank positioned on the lens mold to soften; molding the outer periphery of the softened lens blank with a frosted molding surface disposed at the inner periphery of the lens mold; and cooling the molded lens blank until it solidifies. According to the technical scheme related to lens molding, a plurality of process flows such as core taking and the like can be omitted, so that the production cost is reduced, and the production efficiency is improved.
Description
Technical Field
The present application relates to the field of optical lenses, and more particularly, to a lens molding method, a lens mold, and a lens.
Background
optical lenses are a core component in many optical systems. Most of the existing optical lenses are processed by grinding, coring, grinding and the like. Due to numerous links, a bottleneck exists in the aspects of reducing the production cost and improving the production efficiency. In particular, the core-taking process often has the problems of difficult eccentric control, easy scratch on the surface of the lens, long processing time and the like. However, with the great popularity of various portable and vehicle-mounted optical lens terminals, there is a need in the market for an optical lens and a manufacturing scheme thereof that are low in cost and fast in mass production.
Disclosure of Invention
the application provides a lens molding method, a lens mold and a molded lens.
According to one aspect of the present application, a lens molding method and a lens mold are provided. The lens molding method comprises: heating the lens blank positioned on the lens mold to soften; molding the outer periphery of the softened lens blank with a frosted molding surface disposed at the inner periphery of the lens mold; and cooling the molded lens blank until the lens blank solidifies.
According to an embodiment of the application, the method further comprises: a step profile is molded on one surface of the softened lens blank using a step provided at the periphery of the upper or lower surface of the inner side of the lens mold.
according to one aspect of the present application, there is provided an ophthalmic lens mold. The lens mold includes: the first mold core is provided with a first molding surface; the second die core is provided with a second molding surface facing the first molding surface, and the first die core can move towards or away from the second die core; and the peripheral frosted part is positioned between the first mold core and the second mold core and is provided with a third frosted molding surface, wherein when the first mold core moves to the nearest distance towards the second mold core, the first molding surface, the second molding surface and the third molding surface limit the outline of the molded lens.
According to an embodiment of the application, one of the first molding face and the second molding face has a step at an edge thereof.
According to an embodiment of the present disclosure, when the first mold core moves to a nearest distance toward the second mold core, a flash gap is formed between the first mold core and the second mold core.
According to an embodiment of the present application, portions of the first molding face, the second molding face, and the third molding face corresponding to the flash gap have a frosted surface.
According to an embodiment of the application, the lens mold comprises a stopper defining the flash gap.
According to an embodiment of the present application, the lens mold includes a sleeve, and an inner wall of the sleeve contacts side surfaces of the first mold core and the second mold core and guides the first mold core to move toward or away from the second mold core.
According to an embodiment of the present application, the lens mold has a stopper limiting a stroke of the first mold core moving relative to the second mold core, the stopper being connected to an upper surface of the first mold core and having a protrusion protruding beyond an inner diameter of the sleeve.
According to an embodiment of the present disclosure, the peripheral polishing portion is integrally formed with one of the first mold core and the second mold core.
According to one aspect of the present application, a lens molding method is provided. The method comprises the following steps: providing a lens blank and the lens mold as described above, positioning the lens blank onto the second molding surface of the second mold cavity; heating the lens blank to soften; moving the first mold core towards the second mold core until the closest distance so as to mold the softened lens blank by utilizing the first molding surface, the second molding surface and the third molding surface which is subjected to sanding treatment; cooling the molded lens blank at the position of the closest distance between the first mold core and the second mold core until the cooled lens blank is solidified into a lens; and moving the first mold core away from the second mold core and taking out the lens.
according to an embodiment of the present application, moving the first mold core towards the second mold core to the closest distance to mold the softened lens blank by using the first molding surface, the second molding surface and the third molding surface processed by sanding further comprises: a step profile is molded on one surface of the softened lens blank with a step formed at an edge of one of the first molding surface and the second molding surface.
According to an embodiment of the present application, said providing a lens blank comprises: providing a lens blank having a volume greater than a volume of a space defined by the first molding surface, the second molding surface, and the third molding surface when the first mold cavity is moved toward the second mold cavity to a closest distance; and moving the first mold core towards the second mold core until the closest distance so as to mold the softened lens blank by using the first molding surface, the second molding surface and the third molding surface which is subjected to sanding treatment, and the method further comprises the following steps: and molding the softened lens blank to enable the part of the lens blank exceeding the volume to overflow through a flash gap arranged between the first die core and the second die core to form a protrusion.
According to an embodiment of the present application, moving the first mold core towards the second mold core to the closest distance to mold the softened lens blank by using the first molding surface, the second molding surface and the third molding surface processed by sanding further comprises: molding the protrusions with the sanded surfaces provided at portions of the first molding face, the second molding face, and the third molding face corresponding to the flash gaps.
According to one aspect of the present application, a molded lens is provided. The lens includes: a first mirror having a first shape; a second mirror having a second shape; and a frosted mirror ring connecting the first mirror surface and the second mirror surface.
According to the embodiment of the application, the surface roughness of the frosted mirror ring is less than 0.2 mu m.
According to an embodiment of the present application, one of the first mirror surface and the second mirror surface has a step at its periphery.
According to the technical scheme related to lens molding, a plurality of process flows such as core taking and the like can be omitted, so that the production cost is reduced, and the production efficiency is improved. Lens flare can be eliminated or reduced by molding a frosted surface on the rim between the two mirror faces of the lens. The two mirror surfaces can be conveniently distinguished by molding a step at the periphery of one of the two mirror surfaces.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a sectional view showing a lens mold according to an exemplary embodiment of the present application;
FIG. 2 is a cross-sectional view of a lens mold in a molding state;
FIG. 3 illustrates a variation of a first mold core of an ophthalmic lens mold according to an exemplary embodiment of the present application;
FIG. 4 is a cross-sectional view illustrating a lens mold according to an exemplary embodiment of the present application;
FIG. 5 is a cross-sectional view illustrating a lens mold according to an exemplary embodiment of the present application;
FIG. 6 is a flow chart illustrating a method of molding a lens according to an exemplary embodiment of the present application; and
Fig. 7 is a schematic diagram illustrating a lens according to an exemplary embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
in addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
in the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
Fig. 1 is a sectional view illustrating a lens mold 100 according to an exemplary embodiment of the present application.
As shown in fig. 1, the lens mold 100 includes a first mold core 110, a second mold core 120 and a peripheral polishing portion 130. In fig. 1, the first mold core 110 is drawn as an upper mold core, and the second mold core 120 is drawn as a lower mold core. However, those skilled in the art will appreciate that this is for ease of illustration and description only and does not constitute a limitation on the specific location of the core.
the first mold core 110 has a first molding surface 111. The first molding surface 111 is a smooth surface for molding a lens blank and has a roughness less than a predetermined threshold. The first mold core 110 may be machined by a Computer Numerical Control (CNC) machine so that the first molding surface 111 has a desired surface shape corresponding to the first mirror surface of the lens desired to be molded. For example, the first molding surface 111 may have a spherical profile or an aspherical profile.
the second mold core 120 has a first molding surface 121. The second molding surface 121 is a smooth surface for molding the lens blank and has a roughness less than a predetermined threshold. As shown, the first molding surface 111 and the second molding surface 121 face each other. The second mold core 120 can be machined by a CNC machine to make the second molding surface 121 have a desired surface shape corresponding to the second mirror surface of the lens desired to be molded. For example, the second molding surface 121 may have a spherical profile or an aspherical profile. In addition, the first molding surface 111 and the second molding surface 121 may be subjected to a polishing process to have a roughness less than a predetermined threshold. According to another embodiment of the present application, release films may be disposed on the first molding surface 111 and the second molding surface 121 to facilitate separation from the molded lens after the molding process described below is completed.
In this embodiment, the first mold core 110 is movable relative to the second mold core 120. Specifically, when the first mold core 110 is configured as an upper mold core and the second mold core 120 is configured as a lower mold core, the first mold core 110 can move up and down relative to the second mold core 120 to approach or separate from the second mold core 120.
A peripheral polishing portion 130 is disposed between the first mold core 110 and the second mold core 120. The peripheral sanding portion 130 has a third molding surface 131. The third molding surface 131 may be a rough surface that is frosted and has a predetermined roughness. As described above, the first mold core 110 may be close to or far from the second mold core 120. When the first mold core 110 moves to the nearest distance toward the second mold core 120, the first molding surface 111, the second molding surface 121 and the third molding surface 131 may define a closed or substantially closed space. This space has the contour of the lens desired to be molded.
Fig. 2 is a cross-sectional view of the lens mold 100 shown in fig. 1 in a molded state.
In the example shown in fig. 2, when the first mold core 110 moves to the nearest distance toward the second mold core 120, the first molding surface 111, the second molding surface 121 and the third molding surface 131 define a completely closed space 140. The space 140 has a sanded periphery, i.e., a closed surface formed by the third molding surface 131.
A lens molding method according to an embodiment of the present application will now be described with reference to fig. 1 to 2. First, a lens blank and the lens mold 100 described with reference to fig. 1 and 2 need to be provided. The lens blank can have a variety of shapes and material configurations. For example, in forming a lenticular lens having two convex surfaces, the lens blank may be a spherical lens blank. The lens blank may be a plate-like lens blank in forming a plano-concave lens having a flat surface and a concave surface. Glass materials are considered for use in the production of low cost lenses. In producing a lens with reduced weight, a resin material such as acryl diglycol carbonate, polymethyl methacrylate, polycarbonate, or the like can be selected. The volume of the lens blank needs to be controlled to be approximately equal to the volume of the space 140 defined by the first molding surface 111, the second molding surface 121 and the third molding surface 131.
in the case where the first mold core 110 and the second mold core 120 are separated from each other or separated by a certain distance, the lens blank can be placed on the second molding surface 121 of the second mold core 120. The first mold core 110 may then be moved toward the second mold core 120 until the first molding surface 111 is substantially in contact with the glass blank. However, this approach to pre-approaching is only an alternative, not a necessary one.
Subsequently, the lens blank may be heated until it softens. In this process, the heating temperature can be selected to be appropriate depending on the material of the lens blank. When the lens blank is in a softened state, the first mold core 110 is moved toward the second mold core 120 until a predetermined minimum distance is reached. As described above, at this closest distance, the first molding surface 111, the second molding surface 121, and the third molding surface 131 define a completely enclosed space 140. The space 140 has a sanded periphery, i.e., a closed surface formed by the third molding surface 131. In this case, the softened lens blank can be molded using the first molding surface 111, the second molding surface 121, and the third molding surface 131 that has been sanded. The first molding surface 111 can mold a first mirror surface of a lens having a first shape. The second molding surface 121 may be molded to form a second mirror surface having a second shape. The third molding surface 131 may mold a frosted rim that connects the first mirror surface and the second mirror surface.
The first mold core 110 and the second mold core 120 may be held in this nearest position for a predetermined time to allow the lens blank to be fully shaped. The molded lens blank is then cooled while the first mold core 110 and the second mold core 120 are held in the closest distance until they solidify, thereby obtaining the lens.
And finally, moving the first mold core away from the second mold core to provide a space for taking out the lens, and then taking out the molded lens.
According to the technical scheme, the lens is obtained by the lens blank through a single molding process, so that a plurality of process flows such as core taking and the like can be omitted, the production cost is reduced, and the production efficiency is improved. In addition, by molding a frosted surface on the rim between the two lens surfaces of the lens, stray light on the lens can be eliminated or reduced.
Fig. 3 is a view illustrating a variation of a first core of an ophthalmic lens mold according to an exemplary embodiment of the present application.
In the example shown in fig. 3, the first molding surface 111 of the first core 110 has a step 112 at its edge. The step 112 can be used to mold a step profile into one surface of the lens blank. For example, in the example shown in fig. 3, the step 112 of the first molding surface 111 may mold a step profile into the upper lens surface of the lens.
However, the present application is not limited thereto. Although not shown, a step may be provided at the edge of the second molding surface 121 of the second mold core 120, and the step may be used to mold a step profile on the lower lens surface of the lens. The two mirror surfaces can be conveniently distinguished by molding a step at the periphery of one of the two mirror surfaces. Especially in the case where the two mirror surfaces are similar in shape, the two mirror surfaces can be directly distinguished by the step without using an auxiliary instrument such as a saggital height meter.
Fig. 4 is a sectional view illustrating a lens mold 200 according to another exemplary embodiment of the present application.
As shown in fig. 4, the lens mold 200 includes a first mold core 210, a second mold core 220, and a peripheral frosted portion 230. The peripheral polishing portion 230 may be formed separately from the first mold core 210 or integrally formed therewith. When the first mold core 210 moves to the nearest distance shown in fig. 4 toward the second mold core 220, a gap still exists between the first mold core and the second mold core. This gap is hereinafter referred to as flash gap 240. In the presence of the flash gap 240, the volume of the lens blank may be slightly larger than the volume of the space defined by the first molding surface, the second molding surface and the third molding surface. In this case, the flash of the lens blank exceeding the volume of the space overflows through the flash gap 240 disposed between the first mold core and the second mold core to form the protrusion 241. By configuring the flash gap, the calculation accuracy of the volume of the lens blank can be reduced, thereby reducing the process difficulty. In addition, the protrusion 241 formed by the flash gap 240 may be used for a press seal or the like.
in the case where the lens mold 200 is configured with the flash gap 240, portions of the first molding surface, the second molding surface, and the third molding surface corresponding to the flash gap 240 may also have a sanded surface. These surfaces may be contacted with the softened lens blank during molding and molded with protrusions 241 having a frosted surface on the lens blank.
To achieve the flash gap 240, a stop may be provided for the lens mold 200. The stop may be implemented in a variety of ways to define the size of the flash gap. For example, in the example shown in fig. 4, the limiting member 250 is implemented by an annular rigid member 250 having a certain height formed on the second mold core 220.
fig. 5 is a sectional view illustrating a lens mold according to still another exemplary embodiment of the present application. In fig. 5, the same or similar elements as in fig. 4 are given the same reference numerals. The features of these elements are not described again for the sake of brevity.
in the exemplary embodiment shown in fig. 5, the lens mold further includes a sleeve 270. The inner wall of the sleeve 270 contacts the side surfaces of the first mold core 210 and the second mold core 220 and guides the first mold core 210 to move toward or away from the second mold core 220.
in the exemplary embodiment shown in fig. 5, the peripheral frosted portion 230 and the first mold core 210 are integrally formed, and when the first mold core 210 moves to the nearest distance toward the second mold core 220, a flash gap 240 may exist between the first mold core 210 and the second mold core 220. To define and maintain the flash gap 240, the first mold core 210 may be coupled to a stop 260. The stop 260 may have a protrusion 261 that protrudes beyond the inner diameter of the sleeve 270. When the first mold core 210 moves to the nearest distance toward the second mold core 220, the protrusion 261 can abut against the upper surface of the sleeve 270 to prevent the first mold core 210 from continuously approaching the second mold core 220. The stop 260 may also be integrally formed with the first mold core 210.
fig. 6 is a flow chart illustrating a method of molding a lens according to an exemplary embodiment of the present application.
As described in detail above with reference to fig. 1 and 2, the lens blank positioned on the lens mold may be heated in step S610 until the lens blank softens. Then, the inner space of the lens mold is compressed in step S620. In the compression process, a first molding surface of the first mold core can be used for molding a first mirror surface of the lens, a second molding surface of the second mold core is used for molding a second mirror surface of the lens, and a molding surface which is arranged on the periphery of the inner side of the lens mold and is subjected to sanding treatment is used for molding a frosted mirror ring of the lens. Finally, in step S630, the molded lens blank is cooled until it solidifies.
FIG. 7 illustrates a schematic view of an ophthalmic lens 700 molded in accordance with an exemplary embodiment of the present application, as shown in FIG. 7, the ophthalmic lens 700 may include a first mirror surface S 1 having a first shape/profile, for example, the first mirror surface S 1 may be spherical or aspherical, the ophthalmic lens 700 may include a second mirror surface S 2 having a second shape/profile, the first mirror surface S 1 and the second mirror surface S 2 may cooperatively form a lenticular, biconcave, plano-convex, plano-concave, etc. lens, the outer circumferential edges of the first mirror surface S 1 and the second mirror surface S 2 may have a frosted rim S 3 connecting the first mirror surface S 1 and the second mirror surface S 2, the frosted rim S 3 may eliminate or reduce lens glare.
Further, the first mirror surface S 1 may have a step T 1 at its periphery to facilitate distinguishing the first mirror surface S 1 from the second mirror surface S 2 those skilled in the art will appreciate that the particular shape of the step T 1 is not limited and may also be formed at the periphery of the second mirror surface S 2.
In addition, the frosted rim S 3 formed by the above embodiment has a surface roughness below 0.2 μm, so that further surface treatment is not needed.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, but not limited to, the above features and the technical features having similar functions disclosed in the present application are mutually replaced to form the technical solution.
Claims (17)
1. A method of molding a lens, the method comprising:
Heating the lens blank positioned on the lens mold to soften;
Molding the outer periphery of the softened lens blank with a frosted molding surface disposed at the inner periphery of the lens mold; and
Cooling the molded lens blank until the lens blank solidifies.
2. The lens molding method of claim 1, further comprising: a step profile is molded on one surface of the softened lens blank using a step provided at the periphery of the upper or lower surface of the inner side of the lens mold.
3. an ophthalmic lens mold, comprising:
the first mold core is provided with a first molding surface;
The second die core is provided with a second molding surface facing the first molding surface, and the first die core can move towards or away from the second die core; and
a peripheral frosted portion located between the first mold core and the second mold core and having a third frosted molding surface,
when the first mold core moves to the nearest distance towards the second mold core, the first molding surface, the second molding surface and the third molding surface limit the contour of the molded lens.
4. the lens mold of claim 3, wherein one of the first molding surface and the second molding surface has a step at an edge thereof.
5. The lens mold of claim 3, wherein when the first mold core moves to a nearest distance toward the second mold core, a flash gap exists between the first mold core and the second mold core.
6. The lens mold of claim 5, wherein portions of the first, second, and third molding surfaces corresponding to the flash gap have a frosted surface.
7. The lens mold of claim 5, wherein the lens mold comprises a stop that defines the flash gap.
8. The lens mold of claim 5, wherein the lens mold comprises a sleeve, an inner wall of the sleeve contacting side surfaces of the first mold core and the second mold core and guiding the first mold core to move toward or away from the second mold core.
9. The lens mold of claim 8, wherein the lens mold has a stop that limits the travel of the first mold core relative to the second mold core, the stop being coupled to an upper surface of the first mold core and having a protrusion that protrudes beyond an inner diameter of the sleeve.
10. The lens mold of claim 3, wherein the peripheral frosted portion is integrally formed with one of the first mold core and the second mold core.
11. A method of molding a lens, the method comprising:
Providing a lens blank and a lens mold according to claim 3,
Positioning the lens blank onto a second molding surface of the second mold cavity;
Heating the lens blank to soften;
Moving the first mold core towards the second mold core until the closest distance so as to mold the softened lens blank by utilizing the first molding surface, the second molding surface and the third molding surface which is subjected to sanding treatment;
Cooling the molded lens blank at the position of the closest distance between the first mold core and the second mold core until the cooled lens blank is solidified into a lens; and
and moving the first mold core away from the second mold core and taking out the lens.
12. The lens molding method of claim 11, wherein moving the first mold core toward the second mold core up to the closest distance to mold the softened lens blank with the first molding surface, the second molding surface, and a sanded third molding surface further comprises: a step profile is molded on one surface of the softened lens blank with a step formed at an edge of one of the first molding surface and the second molding surface.
13. The lens molding method according to claim 11,
The providing a lens blank comprises: providing a lens blank having a volume greater than a volume of a space defined by the first molding surface, the second molding surface, and the third molding surface when the first mold cavity is moved toward the second mold cavity to a closest distance; and
Moving the first mold core towards the second mold core until the closest distance to mold the softened lens blank by using the first molding surface, the second molding surface and the third molding surface which is subjected to sanding treatment, further comprising:
And molding the softened lens blank to enable the part of the lens blank exceeding the volume to overflow through a flash gap arranged between the first die core and the second die core to form a protrusion.
14. The lens molding method of claim 13, wherein moving the first mold core toward the second mold core up to the closest distance to mold the softened lens blank with the first molding surface, the second molding surface, and a sanded third molding surface further comprises:
molding the protrusions with the sanded surfaces provided at portions of the first molding face, the second molding face, and the third molding face corresponding to the flash gaps.
15. A lens, characterized in that it comprises:
A first mirror having a first shape; utensil for cleaning buttock
A second mirror having a second shape; and
And the frosted mirror ring is used for connecting the first mirror surface and the second mirror surface.
16. the lens of claim 15, wherein the frosted rim has a surface roughness of less than 0.2 μm.
17. the lens according to claim 15, characterized in that one of the first and second mirror surfaces has a step at its periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537254.5A CN110549586A (en) | 2018-05-30 | 2018-05-30 | Lens molding method, lens mold and lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537254.5A CN110549586A (en) | 2018-05-30 | 2018-05-30 | Lens molding method, lens mold and lens |
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| CN110549586A true CN110549586A (en) | 2019-12-10 |
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| CN201810537254.5A Pending CN110549586A (en) | 2018-05-30 | 2018-05-30 | Lens molding method, lens mold and lens |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113905472A (en) * | 2020-07-07 | 2022-01-07 | 宁波舜宇车载光学技术有限公司 | Lens with heating device and lens comprising lens |
| CN114311469A (en) * | 2021-12-13 | 2022-04-12 | 刘园 | TAC lens forming process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113905472A (en) * | 2020-07-07 | 2022-01-07 | 宁波舜宇车载光学技术有限公司 | Lens with heating device and lens comprising lens |
| CN113905472B (en) * | 2020-07-07 | 2024-04-12 | 宁波舜宇车载光学技术有限公司 | Lens with heating device and lens comprising lens |
| CN114311469A (en) * | 2021-12-13 | 2022-04-12 | 刘园 | TAC lens forming process |
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