CN101533111A - Optical component and manufacturing method - Google Patents

Abstract

A nonbreakable optical component and manufacturing method thereof in the invention are characterized in that an optical element and a frame are integrally formed, the inner peripheral surface of the frame is observed on the cross section of the plane surface along the optical axis containing the optical element, and the inner peripheral surface of the frame is represented with a curve with a round angle. The jointing state after the frame and the optical element are integrally formed is become into the following state that the inner periphery of the frame with round angle on the cross section slightly enters the outer periphery of the optical element, in other words, the outer periphery of the optical element is slightly bitten in the inner periphery of the frame with round angel on the cross section, the outer periphery of the optical element cannot be divided into upper and lower parts to become thin, and the stress cannot be centralized on the jointing part, thereby being capable of being formed into the nonbreakable optical component of optical element.

Description

Optics and manufacture method thereof

Technical field

The present invention relates to optics and manufacture method thereof that optical element and framework are one.

Background technology

In the past, be shaped integratedly under the situation of the optical element that forms with metal frame obtaining, for example as proposing in the TOHKEMY 2001-350075 communique, by the two being bonded together with the interior week of the outer peripheral portion clamping metal frame of the optical element in being shaped.

Fig. 1 is the figure that this engagement state is shown.As shown in Figure 1, lens body 1 (optical element) with and aperture board (Twisted り plate) 3 (frameworks) that become one of lens barrel 2 engage integratedly and be shaped.Usually, lens body 1 is formed by resins such as glass or plastics, and framework is formed by metal.

As shown in Figure 1, at lens body 1 junction surface boundary vicinity, clip the thickness attenuation of outer peripheral portion 4 of the lens body 1 of aperture board 3 with aperture board 3.And the cross sectional shape of the inner peripheral surface of aperture board 3 is all forming rectangular edge up and down, concentrates at the outer peripheral portion generation stress of the lens body 1 that is engaged in this part.

But for said lens main body 1, because the thickness attenuation of its outer peripheral portion 4, and stress concentrates on the bonding part of lens body 1 and aperture board 3, thereby lens body 1 has the key element of easy fragmentation.Therefore, be equipped with this key element with easy fragmentation optical element product in design, be subjected to big restriction and become problem in appearance with on the function.

Summary of the invention

In order to solve above-mentioned problem, the objective of the invention is to, not breakable optics of the optical element that forms as one with framework and manufacture method thereof are provided.

Optics of the present invention is with optical element and the framework optics that forms of fluid-tight engagement integratedly, wherein, when observing the inner peripheral surface of above-mentioned framework on the cross section on the plane of the optical axis that comprises above-mentioned optical element, the inner peripheral surface of above-mentioned framework is depicted the curve that has fillet.

And, the manufacture method of optics of the present invention is that the manufacture method of described optics has following operation with optical element and the framework manufacture method of the optics that forms of fluid-tight engagement integratedly: will be shaped is configured in operation on the shaping dies in the opposed a pair of shaping dies with blank and above-mentioned framework; Above-mentioned shaping is heated with blank so that the operation that above-mentioned shaping is softened with blank; And utilize above-mentioned a pair of shaping dies that the above-mentioned shaping after softening is pushed with blank, thereby optical surface is transferred to above-mentioned shaping with on the blank, above-mentioned shaping is configured as optical element with blank, and make the operation of peripheral snap on the interior week of above-mentioned framework of above-mentioned optical element, when observing the inner peripheral surface of above-mentioned framework on the cross section on the plane of the optical axis that comprises above-mentioned optical element, the inner peripheral surface of above-mentioned framework is depicted the curve of band tool fillet.

According to the present invention, form the cross section by inner peripheral surface and become the curved surface that has fillet framework, thereby with the junction surface of framework on, the periphery of optical element can not separated and attenuation up and down, and, stress can not concentrated, and therefore can provide not breakable optics of the optical element that forms as one with framework and manufacture method thereof.

Description of drawings

Fig. 1 is the figure that is illustrated in the engagement state under the situation about forming when engaging existing lens body and aperture board integratedly.

Fig. 2 A is the cut-open view that the framework of first embodiment is shown with shaping dies.

Fig. 2 B is the enlarged drawing of part shown in the with dashed lines circle b among Fig. 2 A.

Fig. 3 A is the vertical view of the framework of first embodiment.

Fig. 3 B is the cut-open view along the plane of the optical axis that comprises the optical element after the shaping of the framework of first embodiment.

Fig. 4 A is the framework of explanation first embodiment and the figure that the forming process of blank is used in shaping.

Fig. 4 B is the enlarged drawing of part shown in the with dashed lines frame c among Fig. 4 A.

Fig. 5 A only cuts out the enlarged drawing of representing with the junction surface of the periphery of interior week of the framework of first embodiment and optical element.

Fig. 5 B is the figure of example of other shape in interior week that the framework of first embodiment is shown.

Fig. 6 A is the cut-open view that the framework of second embodiment is shown with forming section.

Fig. 6 B is the enlarged drawing of part shown in the with dashed lines circle d among Fig. 6 A.

Fig. 7 A is the vertical view of the framework of second embodiment.

Fig. 7 B is the cut-open view along the plane of the optical axis that comprises the optical element after the shaping of the framework of second embodiment.

Fig. 8 A is the framework of explanation second embodiment and the figure that the forming process of blank is used in shaping.

Fig. 8 B is the enlarged drawing of part shown in the with dashed lines frame e among Fig. 8 A.

Fig. 9 A is the vertical view of the framework of the 3rd embodiment.

Fig. 9 B is the cut-open view along the plane of the optical axis that comprises the optical element after the shaping of the framework of the 3rd embodiment.

Fig. 9 C is with a part of otch of the framework of the 3rd embodiment and extracts the stereographic map of representing out.

Symbol description

1: lens body (optical element); 2: lens barrel; 3: aperture board (framework); 4: the lens outer peripheral portion; 5: forming section; 6: fixing cartridge heater; 7: heating plate; 8: movable cartridge heater; 9: movable heating and pressurizing plate; 10: die assembly; 11: patrix; 12: counterdie; 13: sleeve; 14: framework; 15: be shaped and use recess; 16: be shaped and use blank; 17: optical axis; 18: the framework inner peripheral surface; 19: optical element; 20: framework; 21: inner peripheral surface; 22: reflex part; 23: framework; 24: inner peripheral surface; 25: reflex part; 26: slit.

Embodiment

Below, with reference to accompanying drawing on one side embodiments of the present invention described on one side.

(first embodiment)

Fig. 2 A is the cut-open view that the framework of first embodiment is shown with forming section, and Fig. 2 B is the enlarged drawing of part shown in the with dashed lines circle b among Fig. 2 A.

The forming section 5 of the forming machine shown in Fig. 2 A is by constituting with the lower part: be fixedly installed on the fixedly cartridge heater 6 on the not shown forming machine main body frame; Heating plate 7, its be close to and be fixedly installed on this fixedly cartridge heater 6 above; Movable cartridge heater 8, it is configured in the fixedly top of cartridge heater 6 and heating plate 7, and is connected with not shown cylinder piston on being fixedly installed on not shown forming machine main body frame; And movable heating and pressurizing plate 9, it is close to and is provided in the bottom of this movable cartridge heater 8.

Upload to be equipped with at the heating plate 7 of this forming section 5 and move into die assembly 10 in the forming section 5 by not shown conveyer.Die assembly 10 has: columned patrix 11, and its top has flange, and being formed with on the bottom surfaces is shaped uses recess; And columned counterdie 12, being formed with on its upper surface is shaped uses recess, is utilizing the flange that is formed on the bottom to be formed with step on the side face of bottom.

And then sleeve 13 engagings cylindraceous are existed side by side and are located on the stage portion of counterdie 12.In the inboard of sleeve 13 (following),, upload in the top surface edge portion of counterdie 12 and to be equipped with circular framework 14 along its inwall periphery also with reference to Fig. 2 B.And, in the shaping of the upper surface of counterdie 12 with the central mounting of recess 15 and be set with and be shaped with blank 16.

The movable cartridge heater 8 of forming section 5 and movable heating and pressurizing plate 9 pass in and out downwards by not shown cylinder piston, and descend like that downwards shown in the arrow a of Fig. 2 A, while the patrix 11 of die assembly 10 is conducted hot pushing.Thus, as described later, optical surface is transferred to and is shaped with on the blank 16, and optical element is shaped integratedly with framework 14.

Fig. 3 A is the vertical view of above-mentioned framework 14, and Fig. 3 B is the cut-open view along the plane (plane of expanding on the paper depth direction of figure) of the optical axis 17 shown in Fig. 3 A that comprises the optical element after the shaping.

Shown in Fig. 3 A and Fig. 3 B, when observing the inner peripheral surface 18 of framework 14 on the cross section on the plane of the optical axis 17 of the optical element after comprising shaping, shown in Fig. 3 B (also with reference to Fig. 2 B), the inner peripheral surface 18 of framework 14 forms the curved surface of the curve of describing to have fillet.By the enlarged drawing of Fig. 2 B as can be known, the curve that the cross section of this curved surface is described is for roughly semicircle.

For this framework 14, comprise that its cross section becomes the processing of the inner peripheral surface of curved surface, utilize common lathe (if consider throughput rate then utilize automatic lathe) to obtain easily.

Herein, the state shown in Fig. 2 A is the state that has passed through after the following operation: framework 14 is configured in the operation that is shaped with around the blank 16; And the operation of using blank 16 with opposed a pair of shaping dies (patrix 11 and counterdie 12) clamping shaping.

Fig. 4 A is the figure that the forming process of above-mentioned operation is followed in explanation, and Fig. 4 B is the enlarged drawing of part shown in the with dashed lines frame c among Fig. 4 A.Fig. 4 A illustrate movable cartridge heater 8 and movable heating and pressurizing plate 9 from the state of Fig. 2 A shown in arrow a, descend like that and to the patrix 11 of die assembly 10 while the state that heats after pushing.

Thus, utilize, carry out being shaped with blank 16 and framework 14 heating and making the operation that is shaped and softens with blank 16 by the counterdie 12 after heating plate 7 heating with by the patrix 11 after movable heating and pressurizing plate 9 heating, the pressurization.

Further, Fig. 4 A and Fig. 4 B illustrate the state of following after above-mentioned operation is carried out following operation: the shaping after softening is pushed with blank 16, and utilize the shaping of the lower surface of patrix 11 with recess 15 shaping that optical surface is transferred to after softening to be used on the blank 16 with the shaping of recess and counterdie 12, will be shaped is configured as optical element 19 with blank 16.

And, comprise in the shaping of this optical element 19 that periphery with optical element 19 is fastened on the operation on interior week of framework 14 internally and up and down.As having illustrated among Fig. 3, when observing the inner peripheral surface 18 of framework 14 on the cross section on the plane of the optical axis that comprises optical element 19, this inner peripheral surface 18 forms describes to have the roughly curve of the fillet of semicircle.

In addition, in above-mentioned example, the cross section of the inner peripheral surface 18 of framework 14 forms in the mode of describing semicircle, but as long as the cross sectional shape of inner peripheral surface 18 has fillet, is not limited to this.

Fig. 5 A is only with the inner peripheral surface 18 of the framework 14 shown in Fig. 4 A and Fig. 4 B and near section enlarged drawing that goes out to represent at the junction surface of the outer peripheral face of optical element 19, and Fig. 5 B is the figure of example of other shape that the inner peripheral surface 18 of framework 14 is shown.

In Fig. 5 A, as mentioned above, semicircle is described in the cross section of the inner peripheral surface 18 of framework 14, but in Fig. 5 B, is illustrated in the state that has circular arc (R) and rounding on the bight at same right angle up and down, the right angle seen with the interior week of aperture board shown in Figure 13.

No matter the sort of situation can be said, framework 14 and optical element 19 engagement relationship between the two is following state: the inner peripheral surface that has fillet on the cross section 18 of framework 14 enters the state of degree of the outer peripheral face of optical element 19 a little, in other words, the outer peripheral face of optical element 19 state of the inner peripheral surface that on the cross section, has fillet 18 of framework 14 of nipping simplely.

Usually, in above-mentioned the sort of optics, if the inner peripheral surface of framework is square and the outer peripheral face of the lens body of nipping dearly, the then thickness attenuation of the outer peripheral portion of lens body, therefore, it is broken easily that lens body becomes.And same, if the inner peripheral surface of framework is square and the outer peripheral face of the lens body of nipping dearly, then stress concentrates on the bonding part of lens body and framework, therefore, puts the lens main body from this and also becomes broken easily.

The product of optical element that has carried the key element with so easy fragmentation is owing in design, be subjected to big restriction and become problem in appearance with on the function.

But, as mentioned above, first embodiment of the invention, the cross section of the inner peripheral surface 18 of the framework 14 that engages with shallow state with the outer peripheral face of optical element 19 forms the curved surface that has fillet, therefore, at the junction surface of optical element 19 with framework 14, the periphery of optical element 19 can not separated and attenuation up and down, and stress is not concentrated in the junction surface yet.

Like this, according to first embodiment, can provide not breakable optics of the optical element 19 that forms as one with framework 14 and manufacture method thereof.

(second embodiment)

Fig. 6 A is the cut-open view that the framework of second embodiment is shown with forming section, and Fig. 6 B is the enlarged drawing of part shown in the with dashed lines circle d among Fig. 6 A.

In addition, for the structure shown in Fig. 6 A and Fig. 6 B, except framework 20, all be the structure identical with the situation of Fig. 2, therefore omit the explanation of giving label and elliptical structure, only the shape to framework 20 describes.

Fig. 7 A is the vertical view of the framework 20 of second embodiment, and Fig. 7 B is the cut-open view on along the plane of the optical axis 17 shown in Fig. 7 A that comprises the optical element after the shaping (on the plane of the paper depth direction expansion of figure).

Shown in Fig. 6 A, Fig. 6 B, Fig. 7 A and Fig. 7 B, this routine framework 20 forms ring-type, and the curved surface when observing inner circumferential surface 21 on the cross section is formed by the edge in the interior week that will the encircle reflex part 22 that forms that turns back laterally.

Promptly, the shape of this framework 20 can easily realize by following method: along sending in the blank operation of stamping machine the center to the sheet metal of disc-shape to carry out stamping-out, in release (げ on the せ り) operation thereafter, the edge in interior week is released to a side (being the top of figure in this example), in the operation of turning back thereafter, this part that is pushed out is turned back laterally.

Fig. 8 A is the figure that the forming process of above-mentioned operation is followed in explanation, and Fig. 8 B is the enlarged drawing of part shown in the with dashed lines frame e among Fig. 8 A.In addition, identical with the structure shown in Fig. 4 A and Fig. 4 B except the shape of framework 20 for structure and the action shown in Fig. 8 A and Fig. 8 B with action, therefore omit explanation herein.

Shown in Fig. 8 B, engagement state for the outer peripheral face of the inner peripheral surface of the framework 20 after being shaped and optical element 19, also become following state in the case of this example: the inner peripheral surface that has fillet on the cross section of framework 20 enters the state of degree of the outer peripheral face of optical element 19 a little, in other words, the outer peripheral face of optical element 19 state of the inner peripheral surface that on the cross section, has fillet of framework 20 of nipping simplely.

Like this, in the present embodiment, inner peripheral surface 21 for the framework 20 that engages with the outer peripheral face of optical element 19 with shallow state, its cross section forms the curved surface that has fillet, therefore, with the junction surface of framework 20, the outer peripheral face of optical element 19 can be by up and down separately and attenuation, and, the situation that can not exist stress to concentrate.Thus, become the optical element 19 not breakable optics integrally formed with framework 20.

(the 3rd embodiment)

Fig. 9 A is the vertical view of the framework of the 3rd embodiment, and Fig. 9 B is the cut-open view along the plane of the optical axis 17 that comprises the optical element after the shaping, and Fig. 9 C is with a part of otch of framework and extracts the stereographic map of representing out.

Shown in Fig. 9 A, Fig. 9 B and Fig. 9 C, this routine framework 23 is with respect to the inner peripheral surface 24 same with the framework 20 shown in Fig. 7 A and Fig. 7 B, have the reflex part 25 that turns back laterally from the inboard, when observing this inner peripheral surface 24 on the cross section, this inner peripheral surface 24 describes to have the curve of fillet.

And then, in addition, in this example, on reflex part 25, be formed with a plurality of (Fig. 9 A being 6) slit 26 in radiation (radiation) direction from the optical axis 17 of optical element 19 (with reference to Fig. 4 B, Fig. 8 B).

Shape for this framework 23, along sending in the blank operation of stamping machine when the center of the sheet metal of disc-shape carried out stamping-out, carry out stamping-out with the state that has otch at the position corresponding with slit 26, in release operation thereafter, the otch and the edge between the otch in interior week are released to a side (being the top of figure in this example).And then, in the operation of turning back thereafter, the part after this release is turned back laterally, thereby realize the shape of this framework 23.

In this routine situation, in initial stamping-out, owing to form otch at the position corresponding with slit, therefore the release in the release operation thereafter can be difficult to realize easily and not, and, also turn back easily in the operation of turning back after releasing operation.

And, for use this framework 23 and optical element 19 between integrally formed, can utilization with Fig. 4 or Fig. 8 in the same forming process making of forming process that illustrated.

And, moreover, in the forming process of the 3rd embodiment, be formed on slit 26 on the reflex part 25 and constitute release portion (escaping げ portion) when forming with blank 16 being shaped, therefore, can suppress the generation of the inside warpage of optical element 19.

In addition, the invention is not restricted to above-mentioned various embodiment, the implementation phase, in the scope that does not change its purport, can carry out various distortion.

Claims (4)

1, a kind of optics, described optics by with optical element and framework integratedly fluid-tight engagement form, it is characterized in that,

When observing the inner peripheral surface of above-mentioned framework on the cross section on the plane of the optical axis that comprises above-mentioned optical element, the inner peripheral surface of above-mentioned framework is depicted the curve that has fillet.

2, optics according to claim 1 is characterized in that,

When on above-mentioned cross section, observing the above-mentioned inner peripheral surface of above-mentioned framework, by forming curved surface from the reflex part that turns back laterally with respect to the inboard of above-mentioned inner peripheral surface.

3, optics according to claim 2 is characterized in that,

From the reflex part that turns back laterally with respect to the inboard of above-mentioned inner peripheral surface, be formed with a plurality of slits in radiation direction from the optical axis of above-mentioned optical element.

4, a kind of manufacture method of optics, the manufacture method of described optics are with optical element and the framework manufacture method of the optics that forms of fluid-tight engagement integratedly, it is characterized in that the manufacture method of described optics has following operation:

Be configured in operation on the shaping dies in the opposed a pair of shaping dies with being shaped with blank and above-mentioned framework;

Above-mentioned shaping is heated with blank so that the operation that above-mentioned shaping is softened with blank; And

Utilize above-mentioned a pair of shaping dies that the above-mentioned shaping after softening is pushed with blank, thereby optical surface is transferred to above-mentioned shaping with on the blank, above-mentioned shaping is configured as optical element with blank, and makes the operation of peripheral snap on the interior week of above-mentioned framework of above-mentioned optical element

When observing the inner peripheral surface of above-mentioned framework on the cross section on the plane of the optical axis that comprises above-mentioned optical element, the inner peripheral surface of above-mentioned framework is depicted the curve that has fillet.

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