CN101492236A

CN101492236A - Square optical glass lens and method of producing the same

Info

Publication number: CN101492236A
Application number: CNA2008100043764A
Authority: CN
Inventors: 徐三伟
Original assignee: E Pin Optical Industry Co Ltd
Current assignee: E Pin Optical Industry Co Ltd
Priority date: 2008-01-22
Filing date: 2008-01-22
Publication date: 2009-07-29

Abstract

The invention relates to a square optical glass lens and a method for manufacturing the same. The square optical glass lens comprises a first optical surface, a second optical surface and a right angle square shoulder part, wherein the first optical surface and the second optical surface can be formed by a spherical surface or a non-spherical surface; and the right angle square shoulder part can be arranged in a lens base of a lens group. The method for manufacturing the square optical glass lens comprises the following steps: using a square glass as a raw material; making use of a multi-die-cavity forming die to model multi-die-cavity modeling glass into a multi-lens lens blank; separating the lens blank into individual square optical glass lenses; and providing a convex body in the multi-die-cavity forming die in order to avoid air bubbles caused by residual air to influence the precision of the optical surfaces in the glass modeling process so that the air in the molding process can be discharged out through the clearance formed by the height fall around the convex body. The square optical glass lens manufactured by the method not only has precise optical precision, but also greatly simplifies the prior monomer processing of the square optical glass lens so as to reduce the manufacturing cost.

Description

Square optical glass lens and manufacture method thereof

Technical field

What the present invention relates to is a kind of square optical glass lens and manufacture method thereof, especially refer to a kind of have accurate square shoulder of optical surface and right angle and square optical glass lens cheaply, its use mobile phone camera, with use CCD (charge coupled device, charge coupled device) or on the camera of CMOS sensing components such as (complementarymetal-oxide-semiconductor, complementary type gold monomer belongs to oxide semiconductor).

Background technology

Progress along with science and technology, electronic product constantly develops towards compact and multi-functional direction, and in the electronic product, the demand that adds image-taking device is all arranged as digital camera (digital still camera), computer cameras (PC camera), network cameras (network camera), mobil phone or personal digital assistance devices such as (PDA); And for easy to carry with meet the demand of hommization, image-taking device not only needs to have favorable imaging quality, also needs smaller volume and lower cost of manufacture simultaneously, the beginning can effectively promote the applicability of described image-taking device.

Precision glass molding (the glass precision molding) technology that is shaped has been widely applied and has been made high resolving power, the aspheric surface modeling glass lens of the good and lower cost of stability, as U.S. Pat 2006/0107695, US2007/0043463, TaiWan, China patent TW095101830, TW095133807, Japanese Patent JP63-295448 etc., it is to utilize the characteristic of glass at hot mastication, with a glass preform (glass preform) on shaping dies, thermoplastic in the following die, to go up again, the corresponding closure of following die is also exerted pressure, make, the optics die cavity face of following die is transferred to the remollescent glass preform, separates after cooling off, following die take out and become one have on, the modeling glass lens of the die cavity face shape of following die.

Again for can reduce manufacturing cost, U.S. Pat 7,312, the 933 open former materials of square glass that cut into that utilize are made square individual eyeglass 1a as shown in Figure 1 in the model mode, and described square individual eyeglass can be assembled in the lens group easily; Japanese Patent JP63-304201, U.S. Pat 2005/041215 propose the eyeglass array (lens array) of glass mold forming; For making single eyeglass, the glass material that Japanese Patent JP02-044033 public use is moved and with model mode repeatedly make have a plurality of optical mirror slip 1b Optical blanks 2a as shown in Figure 2, it can further cut into single eyeglass 1b; U.S. Pat 2004/165095 discloses the multimode cave model (multi-cavity glassmolding) of infrared rays filter (Infrared ray filter) again, dielectric layer (dielectric layer) can be compressed on the one flat one protruding eyeglass, cut into single infrared rays filter again.

Though technical at glass moulding, can utilize a shaping dies to be provided with a plurality of die cavitys, make a plurality of eyeglasses again through cutting with a mold forming, can reduce manufacturing cost.Yet the manufacture of a plurality of die cavitys still only is subject to the eyeglass of use spheric glass or plano-convex, plano-concave shape.Since must use the aspheric surface glass mirror on compact camera or the mobile phone camera lens design, yet use mold forming of a plurality of die cavitys, the difficulty that has air to discharge smoothly, and this has reduced the precision of aspheric surface glass mirror.

In prior art following method is arranged, trial goes to solve the problem of residual air, as Japanese Patent JP2002-003225, JP05-286730, JP06-191861, U.S. Pat 2005/0172671, European patent EP 0648712 etc., use the method for control pressure, temperature or surfaceness, attempt to solve the problem of plugged vents with the red-tape operati condition; Or as Japanese Patent JP61-291424, JP2000-044260, TaiWan, China patent TWI248919, TW200640807, U.S. Pat 2005/0242454 etc. are provided with air passageways with exhausted air in model equipment; Or as Japanese Patent JP61-291424, JP08-337428, U.S. Pat 7,159,420 etc., on mould, especially descend die to be provided with groove or ventilating pit etc. with exhausted air, yet but described groove or ventilating pit may form relative convex body (as salient point or raised line) on the eyeglass after the shaping, cause the problem of secondary processing or follow-up assembling difficulty.

For single die cavity, exhaust effect generally is to represent with exhaust efficiency, but exhaust efficiency δ equals the sectional area of exhaust-duct divided by die cavity volume (but the sectional area of δ=exhaust-duct/die cavity volume); Heal greatly as exhaust efficiency δ, the expression air can be escaped fast in the model process and can not accumulated in the die cavity, otherwise exhaust efficiency δ is low, and the expression exhaust is blocked easily; Be exhaust smoothly, the δ value should high be advisable more than 0.25.And for a plurality of die cavitys, especially near the die cavity at die center, its exhaust also is not easy, via secular experimental result, for the former material of square glass, its near its δ value of die cavity at die edge should be high 0.25 or more, near its δ value of die cavity at die center then with described die cavity apart from shaping dies outer rim (die edge) apart from increase and increase with geometric progression.And in model equipment, be provided with in the prior art of exhaust-duct, then can be if its channel cross-sectional area is enough big, but will have a large amount of melten glass to infiltrate passage at this moment and form the limit skirt near preferable δ value, cause after the shaping need secondary processing to excise described limit skirt; And form in the prior art of venting channels at a following die present count groove, though it can avoid glass material to push down air passageways and hinder exhaust, but on the shaping eyeglass, can form several convex bodys relatively, the difficulty of eyeglass assembling will be caused, and if die groove cross section is shallow little down, its δ value is crossed the low exhaust effect that also is short of; Instantly the die method that is provided with groove is applied in multimode cave model, because it is long to be positioned at its air passageways of die cavity at center, multimode cave, exhaust effect is not good.Therefore, utilize accurate moulded glass forming technique when making the optical glass lens in multimode cave, its shaping dies should make exhaust efficiency δ trend at bigger numerical value in design, and can on eyeglass, not form the assembling of ridge, just can meet the yield of mass production and the demand of output to avoid needing secondary processing to polish or influencing eyeglass.

Summary of the invention

Main purpose of the present invention is to provide a kind of square optical glass lens, it utilizes the former material of a square glass to insert on the multimode cave shaping dies, in the following die and the pressurization of heating is molded as an Optical blanks with plurality of lens, cut out square optical glass lens by described Optical blanks again, it comprises one first optical surface and is located on the one side of eyeglass, one second optical surface is located on the opposite face of first optical surface of eyeglass, be located at the periphery of optical surface with a right angle square shoulder portion, wherein said first, two optical surfaces are optical effect districts of square optical glass lens, described shoulder is the non-optical zone of action of square optical glass lens, and form one or four jiaos and be the square of right angle, and the right angle of described shoulder and square are cut by Optical blanks to form, with the processing of simplification square optical glass lens, but and make described square eyeglass ease of assembly on lens group.

Still a further object of the present invention is to provide a square optical glass lens, can further form on wherein said four jiaos of square shoulders that are the right angle since on the mould set exhaust-duct cause the groove of relative shaping, described groove is caused by set a plurality of convex body on the shaping dies, between can be in model processing by described convex body and the former material of square glass because of the formed space of height fall with as the exhaust-duct, so that exhaust efficiency δ 〉=0.25 of shaping dies upper limb die cavity, exhaust efficiency δ 〉=0.5 of center die cavity, make in the model process can be with die cavity in air effectively discharge, reduce the precision of square glass eyeglass to avoid air to remain in the die cavity.

Another object of the present invention is to provide a kind of manufacture method of square optical glass lens, it is to utilize the former material of a square glass to insert in the upper and lower die of a multimode cave shaping dies and the pressurization model of heating, be multimode cave moulded glass model (multi-cavity glass molding), cause an Optical blanks with many eyeglasses with one-off pattern, more described Optical blanks is separated (cutting) and become the single eyeglass of discrete (individual); The square glass eyeglass of making by this method has two optical surfaces and at the square shoulder in the right angle of optical surface periphery, so, can simplify the processing of square optical glass lens, but and make described eyeglass ease of assembly in lens group.

Another purpose of the present invention is to provide a kind of manufacture method of square optical glass lens, wherein said multimode cave shaping dies further can be thereon, a plurality of convex bodys are laid in the outside in the multimode cave of following die, make in model processing can be by described convex body and the former material of square glass between because of the formed space of height fall with as the exhaust-duct, so that exhaust efficiency δ 〉=0.25 of the die cavity at edge in the shaping dies, exhaust efficiency δ 〉=0.5 of the die cavity at center, make in the model process can be with die cavity in air effectively discharge, reduce the precision of square glass eyeglass to avoid air to remain in the die cavity.

Another purpose of the present invention is to provide a kind of manufacture method of square optical glass lens, wherein said multimode cave shaping dies further can be provided with the vertical and horizontal reverse V-shaped long convex body of several long strip shapes on the outside in its multimode cave, cause can be on Optical blanks press forming V-type pre-groove relatively, to cut separatory pre-groove as Optical blanks, be separated into single square optical glass lens conveniently to cut described Optical blanks; Moreover, vertical and the horizontal reverse V-shaped long convex body of described long strip shape can be set as not closed state with respect to multimode cave cloth, so that vertically and/or form the space between horizontal each reverse V-shaped long convex body, form the advantage that cuts the usefulness pre-groove simultaneously to have above-mentioned enhancement exhaust effect concurrently.

Description of drawings

Fig. 1 is existing square optical glass lens synoptic diagram;

Fig. 2 is existing Optical blanks synoptic diagram;

Fig. 3 is the front schematic view of square optical glass lens first embodiment of the present invention;

Fig. 4 is a side schematic view of Fig. 3 square optical glass lens;

Fig. 5 is the side schematic view that square optical glass lens first embodiment of the present invention is applied in lens group;

Fig. 6 is the front schematic view of Fig. 5;

Fig. 7 is the side schematic view that square optical glass lens first embodiment of the present invention is applied in lens group;

Fig. 8 is the front schematic view of Fig. 7;

Fig. 9 is the manufacture method schematic flow sheet of square optical glass lens of the present invention (first embodiment);

Figure 10 is the front schematic view of square optical glass lens of the present invention (second embodiment);

Figure 11 is a side schematic view of Figure 10 square optical glass lens;

Figure 12 is the side schematic view that square optical glass lens second embodiment of the present invention is applied in lens group;

Figure 13 is the front schematic view of Figure 12;

Figure 14 is the following die synoptic diagram of the 3rd embodiment shaping dies that is provided with a plurality of convex bodys;

Figure 15 is the upper cores synoptic diagram of the 3rd embodiment shaping dies that is provided with a plurality of convex bodys;

Figure 16 is the Optical blanks synoptic diagram of third embodiment of the invention;

Figure 17 is a square optical glass lens synoptic diagram of third embodiment of the invention;

Figure 18 is the following die synoptic diagram of the fourth embodiment of the invention shaping dies that is provided with the long strip shape convex body;

Figure 19 is the Optical blanks synoptic diagram of fourth embodiment of the invention;

Figure 20 is square optical glass lens the 4th an embodiment synoptic diagram of the present invention;

Figure 21 is the following die synoptic diagram of the shaping dies that is provided with many reverse V-shaped rectangular convex bodys of the 5th embodiment;

Figure 22 is the Optical blanks synoptic diagram that utilizes Figure 21 shaping dies institute casting forming;

Figure 23 is the following die synoptic diagram of the shaping dies that is provided with the reverse V-shaped rectangular convex body of multistage of the 5th embodiment;

Figure 24 is the Optical blanks synoptic diagram that utilizes Figure 23 shaping dies institute casting forming.

Description of reference numerals: 1-square optical glass-eyeglass (rectangular optical glass lens); 2-Optical blanks (lens sheet); 11-shoulder (outer); 12-first optical surface (first optical surface); 13-second optical surface (second optical surface); 14-long strip shape groove (strip groove); 15-groove (groove); The pre-fluting of 16-V shape (V-type cutting groove); The pre-fluting of 17-V shape (V-typecutting groove); 3-lens group (lens set); 31-eyeglass seat (lens holder); 32-diaphragm (diaphragm); 33-cavity volume (cavity); 34-projecting block (bump); The former material of 4-square glass (rectangularglass blank); 5-shaping dies (forming mold); 50-die cavity face; 51-upper cores (upper mold); Die under the 52-(lower mold); 53-heating unit (heater); 54-convex body (protrudent part); 55-long strip shape convex body; The 56-edge; The 57-outer rim; The reverse V-shaped rectangular convex body of 58-(upside-down V-typestrip protrusion); The 59-gap.

Embodiment

Below in conjunction with accompanying drawing, do also detailed explanation with other technical characterictic and advantage to the present invention is above-mentioned:

＜the first embodiment 〉

Present embodiment be applied in a convex-concave aspheric surface square optical glass lens 1 as shown in Figure 3, Figure 4, it is that bag is made of one first optical surface 12, one second optical surface 13 and a shoulder 11, wherein, first optical surface 12 is a convex surface and is aspheric surface, second optical surface 13 is a concave surface and is aspheric surface, shoulder 11 for square and four jiaos be the right angle, the square shoulder 11 in promptly aforementioned alleged right angle.

At the square optical glass lens 1 of present embodiment, its focal length is 1.87mm, when in being assembled in lens group 3 shown in Fig. 5,6, can be applicable to Diagonal Dimension is 1/7 " the CMOS sensing component that (inch) is following.The recessed aspheric aspheric surface parameter such as the table one of the convex aspheric surface of first optical surface 12 of present embodiment and second optical surface 13, the aspheric surface formula of use such as formula (1):

Aspheric surface formula (1)

X = \frac{{CY}^{2}}{1 + \sqrt{1 - (K + 1) C^{2} Y^{2}}} + A_{2} Y^{2} + A_{4} Y^{4} + A_{6} Y^{6} + A_{8} Y^{8} + A_{10} Y^{10} + A_{12} Y^{12} + A_{14} Y^{14}

Wherein, C=1/R; And that each parameter defines is as follows:

X: fall into dark value (Sag);

Y: the value (with the centroid distance at zero point) that is the Y direction;

C: being the curvature of directions X, promptly is the inverse of radius of curvature R;

K: be circular cone coefficient (Conic constant);

A ₂-A _n: be respectively

Y

2,4,6,8,10,12 ... the asphericity coefficient of n power.

Table one: the aspheric surface parameter of first embodiment

As Fig. 5, shown in Figure 6, it is respectively that the square optical glass lens 1 of present embodiment is assembled in the synoptic diagram in the lens group 3, described lens group 3 comprises a square optical glass lens 1, an eyeglass seat 31 and a diaphragm 32, wherein, the square shoulder 11 in the right angle of square optical glass lens 1 is fixing with eyeglass seat 31, and be the optical effect district with first optical surface 12 and second optical surface 13, can will enter the light focusing of diaphragm 32 on CMOS sensing component (not shown).

Please refer to Fig. 9, the manufacture method of square optical glass lens 1 of the present invention mainly is with the former material 4 of a square glass, and utilize a multimode cave shaping dies (multi-cavity forming mold) 5 to become an Optical blanks 2 with many eyeglasses with multimode cave moulded glass model (multi-cavity glass molding), be separated into discrete (individual) square optical glass lens 1 again; Present embodiment is that to adopt a shaping dies 5 with 20 die cavitys 50 be one to have the Optical blanks 2 of 20 first optical surfaces 12 and second optical surface 13 (i.e. 20 eyeglasses) with mold forming, cuts and is separated into 20 square optical glass lens 1; As shown in Figure 9, to comprise step as follows for manufacture method of the present invention:

Provide a square glass former material 4, the former material 4 of described square glass is to adopt the H-BAL42 glass material, and the former material of described square glass 4 is best with the homogeneous thickness, heats clamping time can save model;

One lens forming die tool 5 is provided, described shaping dies 5 comprises a upper cores 51 and die 52 once at least, upper cores 51 is established 20 convex aspheric surface die cavitys of tool face 50 respectively, and descend die 52 correspondences to be provided with 20 recessed aspheric surface die cavity faces 50 (for making things convenient for explanation of the present invention in the convex aspheric surface die face of upper cores 51, no matter upper cores 51 and following die 52 set aspheric surface die faces are convex aspheric surface or recessed aspheric surface, logical in the present invention is the die cavity face);

The former material 4 of above-mentioned square glass is put in the upper cores 51 and following die 52 formed spaces of above-mentioned shaping dies 5, utilize heating unit 53 to be heated to the glass softening point temperature as heating tube, again upper cores 51 and following die 52 are imposed oppositely (relative) pressure, model operation with the pressurization of heating, make the former material 4 of square glass be molded as an Optical blanks 2 by a plurality of corresponding up and down protruding, recessed aspheric surface die cavity faces 50 between upper cores 51 and the following die 52, described Optical blanks 2 promptly has 20 corresponding convex aspheric surfaces (12) and recessed aspheric surface (13);

Cut described Optical blanks 2 according to predetermined size, make it be separated into single square optical glass lens 1 and finish product, 1 of described square optical glass lens has first optical surface, 12, one recessed aspheric surface second optical surface 13 and one jiao of square shoulder 11 of a convex aspheric surface.

Wherein in the step that cuts, square optical glass lens 1 is vertically and laterally to cut into single eyeglass by Optical blanks 2, though each end place, right angle of the square shoulder 11 in its right angle may produce the unfairness closed angle end in cutting operation, do not influence the optical effect face of its first optical surface 12 and second optical surface 13.The square shoulder 11 in the right angle of square optical glass lens 1 of the present invention again must be not again by attrition process to remove its each issuable unfairness closed angle end in end place, right angle, to reduce cost of manufacture effectively; And when assembling, as Fig. 5, shown in Figure 6 can establish respectively at the eyeglass seat 31 of lens group 3 and four angular contact places of the square shoulder 11 in right angle of square optical glass lens 1 cavity volume 33 with corresponding at the right angle square shoulder 11 the right angle end and be beneficial to assembling; Or as Fig. 7, shown in Figure 8ly can symmetric projecting block 34 be set respectively at four edge joint synapsis of eyeglass seat 31 and the square shoulder 11 in right angle of square optical glass lens 1, make the angle of cut place between two adjacent projecting blocks 34 form a cavity volume 33 relatively, also can be beneficial to assembling; Therefore, the unfairness closed angle end without attrition process of square optical glass lens 1 of the present invention can hold in the corresponding cavity volume 33 in the lens group 3, and does not influence assembly precision, can remove the attrition process process thus from, further reduces manufacturing cost.

＜the second embodiment 〉

Present embodiment is to be applied in the aspheric surface square optical glass lens 1 of a biconvex as Figure 10, shown in Figure 11, it is made of one first optical surface 12, one second optical surface 13 and a right angle square shoulder portion 11, wherein, first optical surface 12 is a convex aspheric surface, second optical surface 13 is a convex aspheric surface, the square shoulder in right angle 11 for square and four jiaos be the right angle.

At the square optical glass lens 1 of present embodiment, its focal length is 1.796mm, and as Figure 12, Figure 13, can be applicable to Diagonal Dimension is 1/10 in being assembled in lens group 3 " the CMOS sensing component that (inch) is following.First optical surface 12 and second optical surface of present embodiment are convex aspheric surface, and the aspheric surface parameter such as the table two of its convex aspheric surface, the aspheric surface formula of use are the described aspheric surface formula of first embodiment (1).

Table two: the aspheric surface parameter of second embodiment

As shown in Figure 12 and Figure 13, it is respectively that the square optical glass lens 1 of present embodiment is assembled in the synoptic diagram in the lens group 3.Described lens group 3 comprises a square optical glass lens 1, an eyeglass seat 31 and a diaphragm 32, wherein, the square shoulder 11 in the right angle of square optical glass lens 1 is fixing with eyeglass seat 31, and be the optical effect district with first optical surface 12 and second optical surface 13, can will enter the light focusing of diaphragm 32 on CMOS sensing component (not shown).

The manufacture method of square optical glass lens 1 of the present invention mainly is with the former material 4 of a square glass, and utilize a multimode cave shaping dies (multi-cavity forming mold) 5 to become an Optical blanks 2 with many eyeglasses with multimode cave moulded glass model (multi-cavity glass molding), be separated into discrete (individual) square optical glass lens 1 again; Therefore the manufacture method and the step thereof of present embodiment square optical glass lens 1 are similar to first embodiment (as shown in Figure 9), so no longer illustrate at this, but the die cavity face 50 of the shaping dies 5 of present embodiment is a double concave type, the die cavity face 50 that is upper cores 51 and following die 52 is recessed aspheric die cavity face 50, so that the square optical glass lens 1 of press forming is a biconvex aspherical lens.

Present embodiment is in the step that cuts again, square optical glass lens 1 is vertically and laterally to cut into single eyeglass by Optical blanks 2, though each end place, right angle of the square shoulder 11 in its right angle may produce the unfairness closed angle end in cutting operation, do not influence the optical effect face of its first optical surface 12 and second optical surface 13.The square shoulder 11 in the right angle of square optical glass lens 1 of the present invention again must be not again by attrition process to remove its each issuable unfairness closed angle end in end place, right angle, to reduce cost of manufacture effectively; And when assembling, can symmetric projecting block 34 be set respectively at four edge joint synapsis of eyeglass seat 31 and the square shoulder 11 in right angle of square optical glass lens 1 as shown in Figure 12 and Figure 13, make angle of cut place between two adjacent projecting blocks 34 form a cavity volume 33 relatively and be beneficial to assembling; Or establish a cavity volume 33 (with reference to Fig. 5 of first embodiment, shown in Figure 6) respectively at four angular contact places of the eyeglass seat 31 of lens group 3 and the square shoulder 11 in right angle of square optical glass lens 1, be beneficial to assembling with the right angle end of correspondence square shoulder 11 at the right angle; Therefore, the unfairness closed angle end without attrition process of square optical glass lens 1 of the present invention can hold in the corresponding cavity volume 33 in the lens group 3, and does not influence assembly precision, can remove the attrition process process thus from, further reduces manufacturing cost.

＜the three embodiment 〉

Present embodiment is to utilize to be provided with the shaping dies of convex body to make a square optical glass lens 1 as shown in figure 17.In existing glass mirror model process, after glass material glass preform (glass preform) is inserted the die cavity of shaping dies, general all have a process that vacuumizes, and its purpose is unnecessary air in discharging die cavity, avoids air to remain in causing bubble in the die cavity and influence precision.Because glass material can be pushed down down difficult eliminating of the interior air of die cavity that die causes down die, has many technology can overcome this problem in the model process of single die cavity; Yet as the model process in multimode of the present invention cave in, i.e. multimode cave moulded glass model (multi-cavityglass molding), its air scavenge also is not easy.With reference to Figure 14 and shown in Figure 9, the following die 52 of present embodiment shaping dies 5 is provided with a plurality of convex bodys 54 (15 as shown in figure 14), the number of described convex body 54 can determine according to the number of die cavity face 50 (being die cavity), its be laid in down die 52 die cavity face 50 outside appropriate position and have consistent height; Further can be provided with a plurality of convex bodys 54 (15 as shown in figure 15) (can decide) convex body 54 again in upper cores 51 according to the die cavity number, the number of described convex body 54 can be according to the number of die cavity face 50 (being die cavity) or is further cooperated down die 52 to lay a plurality of convex bodys 54 and determine, it is to be laid in the outside appropriate position of die cavity face 50 of upper cores 51 and the height with unanimity; Wherein, upper cores 51 can not be provided with convex body 54, but can increase exhaust efficiency δ after being provided with, and the upper and lower die 51,52 of present embodiment all is provided with convex body 54.

Owing to constitute a gap between the surface of the convex body 54 of die 52 and upper cores 51 and the former material 4 of square glass down, when in the model process, vacuumizing, can be after air is vacuumized by model equipment in the die cavity by discharging in the crack between being formed because of height fall around the described convex body 54, to reach high efficiency exhaust effect, promptly increase exhaust efficiency δ value.And described convex body 54 can form groove opposite (or shrinkage pool) 15 as shown in figure 16 on the Optical blanks 2 of mold forming, and described groove (or shrinkage pool) 15 also might still be stayed on the shoulder 11 of square optical glass lens 1 as shown in figure 17 (deciding on the installation position of convex body 54 or the position that cuts defiber) at Optical blanks 2 after cutting, described groove (or shrinkage pool) 15 can't influence the size and the precision of the square shoulder 11 in right angle of shaping eyeglass 1, can avoid that set exhaust forms relative ridge and influences the size of shaping eyeglass shoulder and the puzzlement of precision with groove regular meeting in the existing shaping dies on the shoulder of eyeglass; The shaping dies 5 that uses present embodiment to be provided with convex body 54 can be promoted the shaping yield of modeling glass lens 1 and not influence the follow-up assembling operation of described eyeglass 1.

The present embodiment utilization has the shaping dies 5 of convex body 54 to make square optical glass lens 1, described square optical glass lens 1 can be the convex-concave aspherical lens of first embodiment or biconvex aspherical lens or other type aspherical lens of second embodiment, the manufacture method of present embodiment is that the convex-concave aspherical lens with first embodiment is example explanation (but not being limited to the convex-concave aspherical lens), and it comprises following steps (can simultaneously with reference to figure 9 with shown in Figure 14,15):

Provide a square glass former material 4, the former material 4 of described square glass is to be material with H-BAL42 glass, heat clamping time for saving model, and be best with the homogeneous thickness;

One lens forming die tool 5 is provided, described shaping dies 5 comprises a upper cores 51 and die 52 once at least, upper cores 51 is established tool a plurality of (20 s' as shown in figure 14) convex aspheric surface die cavity face 50 respectively, and following die 52 correspondences are then established several (20 as shown in figure 15) recessed aspheric surface die cavity faces 50 such as tool at the convex aspheric surface die cavity face of upper cores 51; Be respectively equipped with a plurality of (shown in Figure 14,15 15) convex body 54 again on the outer portion of upper cores 51 and the aspheric surface die cavity face 50 of following die 52, and the height of each convex body 54 even (but can not establish convex body 54 on the outer portion of the non-ball die cavity face of described upper cores 51);

In the space that the upper cores 51 that the former material 4 of above-mentioned square glass is placed on shaping dies 5 and following die 52 are constituted, utilize heating unit 53 as heating tube to the glass softening point temperature, again upper cores 51 and following die 52 are imposed the oppositely model operation of (relative) pressure to heat and to pressurize, make the former material 4 of square glass suppress an Optical blanks 2 as shown in figure 16 by one protruding one recessed aspheric surface die cavity face 50 of upper cores 51 and following die 52, described Optical blanks 2 has 20 convex aspheric surfaces (12) and 20 corresponding recessed aspheric surfaces (13), and each forms 15 grooves 15 (Optical blanks 2 shown in Figure 16 shows 30 grooves 15 because of transparent relation) as shown in figure 16 respectively because of convex body 54 on the single face of described Optical blanks 2;

Cut described Optical blanks 2 according to predetermined size, be separated into single square optical glass lens 1 and finish product, 1 of described square optical glass lens has first optical surface, 12, one recessed aspheric second optical surface 13 of a convex aspheric surface and the square shoulder 11 in outer right angle of

optical surface

12,13, and if retain on the described shoulder 11 at fluted 15 o'clock as shown in figure 17, described groove 15 does not influence the follow-up assembling operation of square optical glass lens 1.

＜the four embodiment 〉

Present embodiment can be applicable to and utilizes one to be provided with the shaping dies of long strip shape convex body to make square optical glass lens 1 as shown in figure 20, especially be applied in the bigger and darker shaping dies 5 of diameter of die cavity face 50, because of its exhaust also is to be difficult for, for increasing exhaust efficiency δ, can be further change the convex body 54 of the 3rd embodiment into long strip shape convex body 55, and properly be laid on the outer portion of aspheric surface die cavity face 50 of the following die 52 of shaping dies 5 and upper cores 51, and can make outer rim 57 that described long strip shape convex body 55 extends to shaping dies 5 by the edge 56 of die cavity face 50 as shown in figure 18.The present embodiment manufacture method is as the 3rd embodiment, and the Optical blanks 2 that its model is made as shown in figure 19, has the long strip shape groove 14 that forms relatively because of long strip shape convex body 55 on its each single face; Finish product as shown in figure 20 and cut described Optical blanks 2 to be separated into single square optical glass lens 1, it has first optical surface, 12, one recessed aspheric second optical surface 13 and a right angle square shoulder portion 11 of a convex aspheric surface, wherein, if retain long strip shape groove 14 (on the installation position of long strip shape convex body 55 or cut the defiber position decide) as shown in figure 20, the size and the precision of the square shoulder 11 in right angle that described again long strip shape groove 14 can't influence square optical glass lens 1 are arranged on the square shoulder 11 in described right angle; The shaping dies 5 that uses present embodiment to be provided with long strip shape convex body 55 again can be promoted the shaping yield of modeling glass lens 1 and not influence the follow-up assembling operation of described eyeglass 1.

＜the five embodiment 〉

Present embodiment can be applicable to and utilizes square optical glass capture eyeglass 1 that a shaping dies that is provided with reverse V-shaped long convex body has a pre-fluting with manufacturing as shown in figure 22.For ease of cutting the square optical glass lens 1 of 2 one-tenth several same sizes of an Optical blanks, can be in the upper cores 51 of shaping dies 5 or lay many reverse V-shaped rectangular convex bodys 58 as shown in figure 21 on the outer portion of the aspheric surface die cavity face 50 of die 52 down, described reverse V-shaped rectangular convex body 58 is vertically and laterally equidistantly to arrange, and it is highly even, make in the mold forming operation in the die cavity air can by between former material 4 of square glass and the described reverse V-shaped rectangular convex body 58 because of height fall discharges in the crack between being formed, and promote exhaust efficiency; The rectangular convex body 58 of described again inverted-V-shaped can correspondingly on the Optical blanks 2 of mold forming form the pre-fluting 16 of V-arrangement as shown in figure 22.The manufacture method of present embodiment is as the 3rd embodiment, and its Optical blanks of making 2 has the pre-fluting 16 of the V-arrangement that has been shaped as shown in figure 22, makes Optical blanks 2 can utilize the pre-fluting 16 of described V-arrangement to be separated into single square optical glass lens 1 and finishes product.

The above-mentioned again reverse V-shaped rectangular convex body 58 that is laid in down on die 52 and the upper cores 51 of vertically and laterally equidistantly arranging, can further change reverse V-shaped rectangular convex body 58 that discontinuous arranges into as shown in figure 23, just a more rectangular reverse V-shaped rectangular convex body 58 makes into short and reverse V-shaped rectangular convex body 58 that multi-stage type or discontinuous are arranged, make and leave space 59 between the reverse V-shaped rectangular convex body 58 of each section and do not form closed state, to promote the exhaust efficiency of shaping dies; Have the pre-fluting 17 of V-arrangement that multi-stage type or discontinuous arrange as shown in figure 24 and the Optical blanks 2 of mold forming is also corresponding, can be beneficial to and cut into a plurality of (as shown 20) single square optical glass capture eyeglass 1; The pre-fluting 16,17 of above-mentioned again described V-arrangement can't influence the size and the precision of the square shoulder 11 in right angle of square optical glass lens 1; The shaping dies 5 that uses present embodiment to be provided with reverse V-shaped rectangular convex body 58 again can be promoted the shaping yield of modeling glass lens 1 and not influence the follow-up assembling operation of described eyeglass 1.

More than shown in only be preferred embodiment of the present invention, only be illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limited, and revise, even the equivalence change also, but all will fall within the scope of protection of the present invention.

Claims

1. square optical glass lens, it is to utilize the former material of a square glass to insert in the upper and lower die of shaping dies in a multimode cave and the pressurization of heating is molded as an Optical blanks that is arranged with plurality of lens, cut out square optical glass lens by described Optical blanks again, it is characterized in that: it comprises:

One first optical surface is located at the one side of eyeglass;

One second optical surface is located on the opposite face of first optical surface of eyeglass, and with the same optical axis of first optical surface; With

One right angle square shoulder portion is located at the periphery of first and second optical surface;

Wherein:

The optical effect face that described first and second optical surface is a square optical glass lens;

The square shoulder in described right angle is the non-optical plane of action of square optical glass lens, and form one square and four jiaos be the right angle, the square of wherein said shoulder and right angle are to form when cutting Optical blanks.

2. square optical glass lens according to claim 1 is characterized in that:

First and second optical surface of described eyeglass comprises a convex aspheric surface and a recessed aspheric surface respectively and forms a convex-concave aspherical lens.

3. square optical glass lens according to claim 1 is characterized in that:

First and second optical surface of described eyeglass comprises two convex aspheric surfaces and forms a pair of convex aspheric surface eyeglass.

4. square optical glass lens according to claim 1, it is characterized in that: also form one or above groove on the one or both sides of the square shoulder in right angle of described eyeglass, and on the die cavity outside of described groove by the upper and lower die of shaping dies, set exhaust with convex body and when model with respect to Optical blanks on mold forming.

5. square optical glass lens according to claim 1, it is characterized in that: further become one or above long strip shape groove on the one or both sides of the square shoulder in right angle of described eyeglass, and the long strip shape convex body that described long strip shape groove is used by set exhaust on the die cavity outside of the upper and lower die of shaping dies and when model with respect to Optical blanks on mold forming.

6. square optical glass lens according to claim 1, it is characterized in that: also form on the one or both sides of the square shoulder in right angle of described eyeglass many vertically with the pre-flutings of laterally equidistantly arranging of V-type, the pre-fluting of described V-type by set exhaust on the die cavity outside of the upper and lower die of shaping dies use vertically with laterally equidistantly arrangement and highly uniform reverse V-shaped rectangular convex body and when the model with respect to Optical blanks on mold forming.

7. according to the square optical glass lens of claim 1 or 6, it is characterized in that: the square of the square shoulder in right angle of described eyeglass further utilizes the pre-fluting of V-type of institute's mold forming on the Optical blanks and separates formation with the right angle.

8. the manufacture method of a square optical glass lens, it is characterized in that: it is to comprise the following step:

Provide a square glass former material;

One lens forming die tool is provided, and described shaping dies comprises a upper cores and die once at least, and upper cores and once die establish at least two first optical surface die cavitys of tool and the corresponding second optical surface die cavity respectively;

The former material of above-mentioned square glass is placed in the above-mentioned shaping dies, model operation with the pressurization of heating, make the former material of square glass by the set first optical surface die cavity of the upper and lower die of mould and the corresponding second optical surface die cavity and model goes out an Optical blanks, make corresponding shaping of described Optical blanks have at least two first optical surface and second optical surface of corresponding number;

Cut described Optical blanks to be separated at least two square optical glass lens, make described eyeglass comprise the periphery that one first optical surface, one second optical surface and a right angle square shoulder portion are located at first and second optical surface, the square shoulder in wherein said right angle square with four jiaos be the right angle and when cutting Optical blanks, form.

9. the manufacture method of described square optical glass lens according to Claim 8, it is characterized in that: further several convex bodys can be set on the outside of the following die of described shaping dies and the die cavity of upper cores, make in the model operation in the die cavity air by discharging in the crack between being formed because of height fall around the described convex body.

10. according to the manufacture method of the described square optical glass lens of claim 9, it is characterized in that: described convex body is the strip convex body.

11. the manufacture method according to the described square optical glass lens of claim 10 is characterized in that: described strip convex body is extended to the outer rim of shaping dies by the upper cores and the outer rim of the die cavity of following die.

12. the manufacture method of described square optical glass lens according to Claim 8, it is characterized in that: also be provided with the reverse V-shaped rectangular convex body of many vertical and laterally equidistant arrangements and equal altitudes on the following die of described shaping dies and the upper cores, so that be molded as the vertical and horizontal equidistantly pre-fluting of V-type of arrangement on the Optical blanks of mold forming relatively.

13. according to Claim 8 or the manufacture method of 12 described square optical glass lens, it is characterized in that: when cutting Optical blanks according to described vertically and the horizontal pre-fluting of V-type cut described Optical blanks to be separated at least two square optical glass lens.

14. manufacture method according to the described square optical glass lens of claim 12, it is characterized in that: the upper cores of described shaping dies is to be divided into multistage and the discontinuous arrangement with the vertical and horizontal reverse V-shaped rectangular convex body of following die, makes between the reverse V-shaped rectangular convex body of each section and forms the space.