TW201443508A - Cover body of optical element - Google Patents

Abstract

A cover body of optical element is capable of effective buffering of improper stress generated during the welding process to retain complete airtight inside the cover body. The cover body comprises an inner cup portion and an external cylinder portion. The inner cup portion has a bottom portion. A positioning hole is set at the center of the bottom portion. A light transmissive member can be encapsulated in the positioning hole, wherein a transition portion is between the inner cup portion and the external cylinder portion.

Description

Cover of optical component

A cover body, in particular, relates to a cover for an optical component.

As is well known, an optical cover member is used to cover an optical element such as a light-emitting element or a light-receiving element used in an optical communication or a photo sensor, and the optical element can be appropriately sealed by using an internal light-tight state. The composition of the light input and output is performed. Therefore, in such an optical cover member, it is extremely important to keep the inside thereof airtight, and if the inside of the optical cover member is kept in an airtight state, the light-emitting element or the light-receiving element can be protected from the external environment. influences.

Specifically, the optical cover member includes: a lid-shaped lid body that connects the lid portion at a distal end side end portion of the tubular portion; and a light transmitting member (for example, a spherical lens) on the lid body The cover portion of the main body is fixed by a low-melting glass glue, and the through hole formed in the cover portion is sealed. Further, in general, the optical cover member is subjected to resistance welding on a stem to which the optical element is mounted.

Please refer to the optical cover part of the application of the invention patent publication No. 200941056, which is only described as a main structure. Referring to the first figure, a schematic view of the structure of the optical cover member of the prior art, referring to the second figure, is a schematic view of the optical cover member of the prior art. As shown in the first figure, the optical cover member 10 of the prior art includes a cover-shaped cylindrical body 20 and a spherical lens 40 mounted on the cover 30 of the cover body 20, the cover body 20 The lid portion 30 is joined to the distal end side end portion 50x of the cylindrical tubular portion 50 by the first joint portion 50c, and the second joint portion 50d is passed through the proximal end side end portion 50y of the tubular portion 50. The flange portion 50f is connected.

A through hole 30a is formed in the center of the lid portion 30 of the lid body 20, and the spherical lens 40 is fixed by the low melting point glass glue 60 so as to seal the through hole 30a. Further, the first joint portion 50c is curved toward the inner surface.

The cylindrical portion 50 of the lid body 20 is divided into a proximal end side region 50a and a distal end side region 50b, and the prior art is characterized in that the outer diameter of the tubular portion 50 is the entire distal end portion region 50b and the proximal end side region 50a. It is a small path. Further, in the process of transferring the outer peripheral surface of the entire region of the tubular portion 50 from the proximal end side to the distal end side, there is no portion where the distal end side is formed to have a large diameter from the proximal end side. In other words, the outer peripheral surface of the distal end side region 50b gradually decreases in diameter as it moves from the proximal end side to the distal end side.

Referring to the second drawing, when the optical cover member 10 is welded to the stem 70, a spring chuck type electrode for electrode welding 80 (not shown in detail) which is divided into a plurality of portions is used, and the stem 70 is previously provided. The optical element 100 is housed and mounted.

When the electric resistance welding electrode 80 fastens the cylindrical portion 50 of the cover main body 20, the fastening force mainly acts on the proximal end side region 50a of the tubular portion 50, and there is almost no fastening force on the distal end side region 50b. When the action occurs, the distal end side region 50b is less likely to be affected by the forging pressure applied during the resistance welding, thereby suppressing generation of the distal end side end portion of the distal end side region 50b by the first coupling portion 50c. Improper stress.

However, the disadvantage of the prior art is that the effect of relieving stress is still limited. In fact, during the welding, since the downforce will rise instantaneously during the crimping, although the first joint portion 50c is partially reduced when the stress passes, the first The connecting portion 50c is not flexible and the cover portion 30 directly contacts the spherical lens 40. In particular, the first connecting portion 50c is curved toward the inner surface, so that the stress acts directly on the first connecting portion 50c and the cover portion 30 inwardly through the distal end side region 50b. As a result, the cover portion 30 is still subject to improper deformation, resulting in the breakage of the low-melting glass glue 60.

Therefore, it is understood that the change in diameter between the proximal end side region 50a and the distal end side region 50b and the provision of the first joint portion 50c cannot effectively improve the problem of improper deformation of the lid portion 30, and when the lid portion 30 is improperly deformed, The airtight state inside the cover portion 30 is broken, resulting in the light-emitting element or the light-receiving element being easily damaged or damaged by the influence of the external environment.

The main object of the present invention is to provide a cover for an optical component, which has the advantages of saving manufacturing cost, and can prevent improper deformation of the cover body, so that the inside of the cover body can be kept airtight, and the cover body is covered. Keeping light elements such as light-emitting elements or light-receiving elements Good working condition.

In order to achieve the above object, the specific technical means of the present invention comprises an inner cup portion and an outer tube portion, the inner cup portion has a bottom portion, and a center of the bottom portion defines a positioning hole, and a light transmitting member can be packaged in the positioning hole. The middle cup portion and the outer tube portion have a turning portion.

The lid system of the present invention is molded by punching a substrate having a plate shape. The advantage of this method is that it can effectively utilize every part of the plate-shaped substrate, and only a very small amount of waste material is produced in the process of making the cover body, and the purpose of saving manufacturing cost is also very environmentally friendly.

Another object of the present invention is to provide an optical component comprising at least one cover, the cover having an inner cup portion and an outer tubular portion, the inner cup portion having a bottom portion, and a center of the bottom portion defines a positioning hole therein. The inner cup portion and the outer tubular portion have a turning portion.

Wherein, further comprising a light transmissive element, a bonding agent and a pedestal, the bonding agent is disposed on the bottom, below the bottom or at the same time above the bottom.

In addition, the light transmissive element is disposed in the positioning hole and separated from the positioning hole by a gap; the bonding agent is further disposed in the gap to fix and seal the optical component in the positioning hole; the base is located Under the cover body, and engaged with the cover body.

Wherein, the turning portion is integrally formed by stamping, and the forming turning portion has sufficient toughness strength and elastic strength, and the external force acting on the cover body and the impact force can be effectively buffered, so that the cover body can be welded in the welding process. In this case, the instantaneously increased stress is effectively buffered as it passes through the turning portion.

Therefore, it is ensured that the inner cup portion and the positioning hole are not deformed improperly, so that the light transmissive member and the bonding agent in the positioning hole are not displaced and damaged, thereby achieving a complete airtight state inside the cover body.

1‧‧‧ cover

11‧‧‧ Inner Cup

13‧‧‧Outer tube

15‧‧‧ Turning Department

111‧‧‧ bottom

1111‧‧‧Positioning holes

3‧‧‧Lighting components

5‧‧‧Binder

7‧‧‧Base

9‧‧‧Electronic components

131‧‧‧Flange

1311‧‧‧ pins

D‧‧‧ gap

10‧‧‧Optical cover parts

20‧‧‧ cover body

30‧‧‧ 盖部

40‧‧‧ spherical lens

50‧‧‧Cylinder

60‧‧‧Low-melting glass glue

100‧‧‧Light components

30a‧‧‧through hole

50a‧‧‧ basal side area

50b‧‧‧Top side area

50c‧‧‧First Link

50d‧‧‧Second Link

50x‧‧‧ top side end

50y‧‧‧ proximal end

50f‧‧‧Flange

The first figure is a schematic view of the structure of the optical cover part of the prior art.

The second figure is a schematic view of the welding of the optical cover parts of the prior art.

The third figure is a schematic view of the cover of the optical component of the present invention.

Figure 4a is a schematic view of a first preferred embodiment of the invention for an optical component.

Figure 4b is a schematic view of a second preferred embodiment of the invention for an optical component.

Figure 4c is a schematic view of a third preferred embodiment of the invention for an optical component.

Figure 5 is a schematic view of a fourth preferred embodiment of the present invention for an optical component.

The embodiments of the present invention will be described in more detail below with reference to the drawings and the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

Referring to the third figure, a schematic view of a cover of an optical component of the present invention. The present invention relates to a cover 1 for an optical element comprising an inner cup portion 11, an outer cylindrical portion 13 and a turning portion 15, wherein the turning portion 15 is located between the inner cup portion 11 and the outer cylindrical portion 13. The material of the cover 1 includes iron, stainless steel, nickel iron, copper and any of the above alloys. The material of the cover 1 can also be made of non-metal materials, such as plastic materials, ceramic materials, glass materials and other suitable non-metal materials. material.

As shown in the third figure, the turning portion 15 is indicated by a diagonal shape, and one end of the turning portion 15 near the inner side of the lid body 1 is in contact with the top end of the inner cup portion 11, and the end portion of the turning portion 15 close to the outer side of the lid body 1 is The top ends of the outer tubular portions 13 are in contact with each other. As can be seen from the above description and the drawing, it can be seen that the inner cup portion 11 is located inside the lid body 1, the outer tube portion 13 is located outside the lid body 1, and the inner cup portion 11 and the outer tube portion 13 are borrowed. A unitary structure is formed by the turning portion 15 located therebetween, that is, the lid body 1 having the inner and outer layers of the present invention.

The inner cup portion 11 may have an upper width and a lower width, and the outer tube portion 13 has a width that is narrower in the lower width or equal in width in the upper and lower sides. Alternatively, the inner cup portion 11 and the outer tube portion 13 are in the same width as the upper and lower sides.

The inner cup portion 11 of the present invention can be used for mounting a light transmissive member (shown in Figure 4a). The inner cup portion 11 has a bottom portion 111 at the center of the bottom portion 111 of the inner cup portion 11 and a positioning hole 1111 in which the light transmitting member can be enclosed in the positioning hole 1111.

In a preferred embodiment of the invention, the light transmissive element can be a lens.

The lid body 1 of the present invention is formed by pressing a plate-shaped base material, for example, by pressing a plate-shaped base material by a transfer transfer type press method. The advantage of this method is that it can effectively utilize every part of the substrate, and only a very small amount of waste material is produced in the process of making the cover body, and even waste materials can be recycled and reused, thereby reducing the manufacturing cost.

In the prior art, the cover body is formed by preparing a block-shaped substrate and then passing through unnecessary portions of the block-shaped substrate, that is, through a cutting process to make a block shape. The substrate becomes a cover having a predetermined shape. However, in the process of production, a lot of scattered waste materials are produced, and dust particles that contaminate the machine equipment and even the pollution products are generated during the cutting process. Therefore, it is necessary to add a cleaning process in the prior art to remove dust particles that may adhere to the outer peripheral surface of the cover body.

According to the above, regardless of the production efficiency and production cost, even if the cleaning process is passed, the particulate dust on the inner and outer surfaces of the cover cannot be completely removed, so the particulate dust will make the cover and other It is difficult for the components to meet the airtightness requirements in subsequent packaging, and the particulate dust may also cause errors in assembly accuracy.

It is well known that cutting technology has the advantage of high machining accuracy, so cutting technology is still widely used in the manufacture of various precision components. In fact, as long as the design of the appropriate precision molds and precision equipment, combined with the ability of the mold professional production staff, stamping technology can also produce a cover 1 with the same precision as the cutting technology.

The main technical feature of the present invention is the turning portion 15 of the cover body 1. The turning portion 15 itself has a certain toughness strength and elastic strength. Therefore, when the impact force applied by the outside is encountered, the impact force can be effectively made through the elasticity. Buffering, it also has the effect of suspension when used normally.

When the cover 1 is in the manufacturing process of the optical component, especially during the resistance welding process, the cover 1 is tightly clamped and pressed by the collet mechanism, and the fastening force and the downward pressure always act on the process. The outer peripheral surface of the cover body 1, and by the design of the turning portion 15, the fastening force and the downward pressure will only act on the portion below the turning portion 15, and if the fastening force and the downward pressure suddenly increase, the turning portion 15 The structural shape and elasticity can greatly alleviate the stress and ensure that the inner cup portion 11 and the positioning hole 1111 are not deformed.

In fact, the tough portion 15 of the toughness needs to be formed by press forming technology. Although the block-shaped substrate can be cut into the outline of the transition portion 15 by the cutting technique, the rigid portion of the substrate is still rigid after being cut, and the toughness is insufficient. Therefore, the ability to cushion the impact is insufficient, so that the cover body is prone to distortion and deformation, which seriously affects the subsequent high-precision assembly process.

Referring to FIG. 4A, a schematic diagram of a first preferred embodiment of the present invention for an optical component, see FIG. 4b, a schematic diagram of a second preferred embodiment of the present invention for an optical component, see FIG. 4C, the present invention A schematic view of a third preferred embodiment for an optical component.

As shown in FIG. 4A, the optical element of the present invention comprises a cover 1 including a inner cup portion 11, an outer tube portion 13 and a turning portion 15, wherein the turning portion 15 is located at the inner cup portion 11 and the outer tube Between the 13th.

One end of the turning portion 15 near the inner side of the lid body 1 is in contact with the distal end of the inner cup portion 11, and the end portion of the turning portion 15 close to the outer side of the lid body 1 is in contact with the distal end of the outer tube portion 13. As can be seen from the above description and the drawing, it can be seen that the inner cup portion 11 is located inside the lid body 1, the outer tube portion 13 is located outside the lid body 1, and the inner cup portion 11 and the outer tube portion 13 are borrowed. A unitary structure is formed by the turning portion 15 located therebetween, that is, the lid body 1 having the inner and outer layers of the present invention.

The inner cup portion 11 can be in the form of an upper width and a lower width or an upper and lower width, and the outer tube portion 13 has a width that is narrower in the lower width or equal in width in the upper and lower sides. The inner cup portion 11 has a bottom portion 111, and a positioning hole 1111 is formed at the center of the bottom portion 111 of the inner cup portion 11.

As shown in FIG. 4A, the optical component of the present invention further includes a light transmitting component 3, a bonding agent 5, and a susceptor 7, wherein the light transmitting component 3 is disposed in the positioning hole 1111 or disposed at the bottom. The upper layer 111 or the bottom portion 111, the bonding agent 5 may be disposed above the bottom portion 111 (refer to the fourth b diagram), below the bottom portion 111 (refer to the fourth c diagram) or simultaneously above the bottom portion 111 ( See the fifth picture).

As shown in FIG. 4A, the light transmitting member 3 is placed in the positioning hole 1111 and spaced apart from the inner wall surface of the positioning hole 1111 by a gap d. The bonding agent 5 is further disposed in the gap d and above the bottom portion 111 to thereby adhere and seal the light transmitting member 3 in the positioning hole 1111. The light transmissive element 3 may be a lens.

In an embodiment of the invention, the bonding agent 5 may be a solid solder, a liquid solder or a UV glue.

The base 7 is located below the cover 1 and is engaged with the cover 1. The electronic component 9 is disposed on a side of the base 7 corresponding to the cover 1 . When the base 7 is engaged with the cover 1 , the electronic component 9 on the base 7 is encapsulated in the base 7 and the cover 1 . In the sealed space, the moisture and the fine dust are prevented from being blocked outside the sealed space formed by the susceptor 7 and the lid body 1, so that the electronic component 9 can function for a long period of time. The above electronic component may be a component having a light-emitting function, a component having a light-receiving function, a component having a light-sensing function, or other suitable electronic component.

Referring to FIG. 4A, the bottom end of the outer tubular portion 13 is outwardly disposed to each other. Corresponding two flange portions 131 are provided with pins 1311 on the bottom surfaces of the flange portions 131, and the pins 1311 and the base 7 are joined by resistance welding. Alternatively, the pins 1311 and the susceptor 7 are joined by resistance welding or solder paste welding in a vacuum environment or at least one atmosphere.

When the cover 1 is in the manufacturing process of the optical component, especially during the resistance welding process, the cover 1 is tightly clamped and pressed by the collet mechanism, and the fastening force and the downward pressure always act on the process. The outer peripheral surface of the cover body 1, and by the design of the turning portion 15, the fastening force and the downward pressure will only act on the portion below the turning portion 15, and if the fastening force and the downward pressure suddenly increase, the turning portion 15 The structural shape and elasticity can effectively alleviate the stress, and ensure that the inner cup portion 11 and the positioning hole 1111 are not deformed.

Therefore, the light-transmitting member 3 in the positioning hole 1111 does not shift or rupture during the resistance welding process, and the inside of the optical element is kept in an airtight state.

Referring to FIG. 5, a schematic diagram of another preferred embodiment of the present invention for an optical component is shown in FIG. 4A. The fifth embodiment is substantially the same as the embodiment of the fourth embodiment, but the bonding agent 5 is disposed on The gap d is located above and below the bottom portion 111, whereby the light transmitting member 3 is adhered and sealed in the positioning hole 1111, so that the inside of the optical element is kept in an airtight state.

The above is only a preferred embodiment for explaining the present invention, and is not intended to limit the present invention in any way, and any modifications or alterations to the present invention made in the spirit of the same invention. All should still be included in the scope of the intention of the present invention.

1‧‧‧ cover

11‧‧‧ Inner Cup

13‧‧‧Outer tube

15‧‧‧ Turning Department

111‧‧‧ bottom

1111‧‧‧Positioning holes

Claims (10)

The cover of the optical component includes at least an inner cup portion and an outer tube portion, the inner cup portion has a bottom portion, and a center of the bottom portion defines a positioning hole, and a light transmitting component can be encapsulated in the positioning hole. There is a turning portion between the inner cup portion and the outer tube portion. The cover of the optical component according to claim 1, wherein the inner cup portion has an upper width and a lower width or a width equal to the upper and lower sides, and the outer tube portion is narrower or narrower. The same width. The cover of the optical component of claim 2, wherein the light transmissive component is a lens. An optical component includes at least one cover body, the cover body has an inner cup portion and an outer tubular portion, the inner cup portion has a bottom portion, and a center of the bottom portion defines a positioning hole, wherein the inner cup portion and the outer portion There is a turning portion between the barrel portions. The optical component of claim 4, further comprising a light transmissive element disposed above or below the bottom. The optical component of claim 5, further comprising a bonding agent, wherein the bonding agent is disposed above or below the bottom. The optical component of claim 4, wherein the light transmissive component is disposed in the positioning hole and spaced apart from the positioning hole by a gap. The optical component of claim 5, further comprising a bonding agent disposed in the gap. The optical component of claim 6 or claim 8, further comprising a base, the base being located under the cover and engaging the cover. The optical component according to claim 9, wherein the bottom end of the outer tubular portion is extended outwardly with two flange portions corresponding to each other, and a bottom surface of each of the flange portions is provided with a stitch, and the stitch is The susceptor is joined by resistance welding or solder paste bonding in a vacuum environment or at least one atmosphere.