CN1808199A - Laser light-emitting component and adjustment device for laser light-emitting component - Google Patents

Abstract

The invention discloses a laser light-emitting component and an adjusting device thereof, wherein the laser light-emitting component comprises a lens cone, a lens arranged in the lens cone, a focusing cylinder sleeved in the lens cone and fixed by dispensing, and a laser light-emitting element arranged in the focusing cylinder. The adjusting device comprises a fixed seat for fixing the lens cone, a movable seat for fixing the focusing cylinder and moving relative to the fixed seat, and an adjusting mechanism for moving the movable seat. When in use, the movable seat is driven by the adjusting mechanism with a small feed amount to move relative to the fixed seat, so that the laser light emitting element in the focusing tube can accurately approach the lens focus in the lens barrel.

Description

Laser light-emitting component and adjustment device for laser light-emitting component

technical field

The invention relates to an optical component and its adjustment device, in particular to a laser light-emitting component and an adjustment device for the laser light-emitting component.

Background technique

As shown in FIG. 1 and FIG. 2 , they are a conventional laser light emitting component 10 and an adjusting device 20 of the laser light emitting component 10 , respectively.

The laser light-emitting assembly 10 includes a lens barrel 11, a lens 12 arranged in the lens barrel 11, a focusing barrel 13 arranged in the lens barrel 11, and a laser light-emitting element arranged in the focusing barrel 13. 14, and a resist ring 15.

The lens barrel 11 includes a first barrel wall 111 surrounding an axis Z and defining a first through hole 112 . The first through hole 112 has a lens mounting section 113 , and a threaded fixing section 114 opposite to the lens mounting section 113 and having a threaded ring around its inner peripheral surface.

The lens 12 is disposed on the lens installation section 113 .

The focusing barrel 13 includes a second barrel wall 131 surrounding the axis Z and defining a second through hole 132, the second through hole 132 has a small aperture section 133 adjacent to the lens mounting section 113, and a small aperture section 133 opposite to the small aperture section 133. The large aperture section 134 of the aperture section 133, the second cylinder wall 131 also has a shoulder surface 135 formed between the large and small aperture sections 134, 133, the outer peripheral surface of the second cylinder wall 131 is surrounded by threads, The focusing barrel 13 is fixed on the screwed fixing section 114 by means of a screw lock.

The laser light-emitting component 14 is arranged in the large-aperture section 134 and a light-emitting portion 141 thereof faces the small-aperture section 133. The inner peripheral surface of the large-aperture section 134 is surrounded by threads, and the resisting ring 15 is screw-locked on the small-aperture section 133. In the large aperture section 134 and the laser light emitting element 14 abuts against the shoulder surface 135 .

The adjustment device 20 of the laser light-emitting component 10 is used with a laser light receiver 210, the adjustment device 20 includes a base 21, a height adjustment group 22 arranged on the base 21 along a vertical direction Y, and a set The fixing seat 23 on the top of the height adjustment group 22 . The lens barrel 11 is fixed on the fixing base 23 corresponding to the laser light receiver 210 .

The height adjustment unit 22 includes a base column 221 , an adjustment ring 222 pivotally mounted on the base column 221 , and a telescopic column 223 driven by the adjustment ring 222 . The fixing base 23 is disposed on the top of the telescopic column 223 .

When performing focus adjustment, the operator rotates the focusing cylinder 13 by hand to adjust the relative distance to the lens 12, and at the same time observes the receiving situation of the laser light receiver 210, thereby judging the laser light emitting element 14 whether it has been shifted to the focal point F of the lens 12, so that the output of laser light can achieve the use effect without distortion.

However, during actual adjustment, since the lens barrel 11 and the focusing barrel 13 are displaced and focused by means of a threaded structure, they are often limited by the threaded structure during manufacture and focusing, resulting in low precision. Problems with offset from the optical axis occur, such as:

1. The lens barrel 11 and the focusing barrel 13 need to be threaded during manufacture, so the manufacturing will be more complicated, and because the pitch of the thread will affect the feeding degree of the focusing barrel 13, so in mass production Under the premise of manufacturing a thread with a smaller pitch and more precise, the cost and time will often be increased a lot.

2. In addition, because the focusing barrel 13 is displaced in the lens barrel 11 by means of a screw structure, the optical axis of the laser light-emitting element 14 will be deviated due to the precision and offset of the thread, and because the laser The light-emitting element 14 rotates and advances during the whole adjustment process, so the defect that the position of the deviated optical axis is not easy to be judged occurs.

Contents of the invention

Therefore, the object of the present invention is to provide a laser light-emitting component that can perform focusing operations without thread processing.

Another object of the present invention is to provide an adjustment device that can assist the laser light-emitting assembly to focus accurately.

Therefore, the laser light-emitting component of the present invention includes a lens barrel, a lens arranged in the lens barrel, a focusing barrel arranged in the lens barrel, and a laser light-emitting element arranged in the focusing barrel.

The lens barrel includes a first barrel wall surrounding an axis and defining a first through hole, and a dispensing channel passing through the first barrel wall and communicating with the first through hole.

The focus barrel is sleeved on the first through hole along the axis direction, and fixed to the lens barrel by dispensing glue in the glue dispensing channel.

The adjustment device of the laser light-emitting component of the present invention comprises a base, a fixed seat arranged on the base along a vertical direction, an adjustment mechanism arranged on the base, and a movable seat arranged between the fixed seat and the adjustment mechanism, And at least one elastic element arranged between the fixed seat and the movable seat.

The fixing base includes a first installation hole for fixing the lens barrel and arranged along a horizontal direction.

The adjustment mechanism includes a length adjustment group extending along the horizontal direction, and a push block arranged at the end of the length adjustment group and opposite to the fixed seat.

The movable seat includes an inner side facing the fixed seat, an outer side facing the push block, and a second mounting hole arranged along the horizontal direction and corresponding to the first mounting hole, and the second mounting hole is For fixing the focusing tube.

When in use, the movable seat will be driven by the adjustment mechanism with a small amount of feed to move relative to the fixed seat, so that the laser light-emitting element in the focusing barrel can accurately approach the focal point of the lens in the lens barrel.

Description of drawings

The present invention is described in detail below in conjunction with accompanying drawing and embodiment, in accompanying drawing:

FIG. 1 is a combined cross-sectional view illustrating the structure of the conventional laser light-emitting component;

Fig. 2 is a schematic diagram illustrating the adjustment device of the above-mentioned laser light-emitting component and the conventional laser light-emitting component;

Fig. 3 is a combined cross-sectional view illustrating the structure of the laser light-emitting component of the present invention;

Fig. 4 is a perspective view illustrating a lens barrel structure in the laser light emitting assembly of the present invention;

Fig. 5 is a schematic diagram illustrating a preferred embodiment of the laser light-emitting component and its adjusting device of the present invention;

Fig. 6 is a perspective view illustrating the combination and configuration structure of a fixed seat, a movable seat, a lens barrel, and a focusing barrel in the above-mentioned preferred embodiment;

Fig. 7 is a cross-sectional view illustrating that in the above-mentioned preferred embodiment, the lens barrel is arranged on the fixed seat, and the focusing barrel is arranged on the movable seat;

FIG. 8 is a cross-sectional view similar to FIG. 7 , illustrating that in the above-mentioned preferred embodiment, an adjustment mechanism pushes the focusing barrel to move toward the lens barrel.

Detailed ways

As shown in FIG. 3 , it is a combined cross-sectional view of a preferred embodiment of the laser light emitting component 30 of the present invention.

The laser light-emitting assembly 30 includes a lens barrel 31, a lens 32 arranged in the lens barrel 31, a focusing barrel 33 coaxially arranged in the lens barrel 31 with the lens 32, and a focusing barrel 33 arranged in the focusing barrel 33. The inner laser light-emitting element 34, and a resist ring 35.

As shown in FIG. 4 , the lens barrel 31 includes a first barrel wall 314 surrounding an axis Z and defining a first through hole 311 , and a first barrel wall 314 passing through the first barrel wall 314 and communicating with the first through hole 311 . Dispensing channel 315 .

The first through hole 311 has a lens installation section 312 , and a socket fixing section 313 opposite to the lens installation section 312 and receiving the focusing barrel 33 .

The first barrel wall 314 also has a convex rib 316 formed between the lens mounting section 312 and the sleeve fixing section 313 , the lens 32 is disposed on the lens mounting section 312 and abuts against the convex rib 316 .

The glue dispensing channel 315 communicates with the socket fixing section 313 .

The focusing barrel 33 is sleeved in the first through hole 311 along the axis Z direction, and is fixed to the lens barrel 31 by dispensing glue in the dispensing channel 315. The focusing barrel 33 includes a And define the second cylindrical wall 334 of a second perforation 331, the second perforation 331 has a small aperture section 332 adjacent to the lens mounting section 312, and a large aperture section 333 opposite to the small aperture section 322, the The second cylinder wall 334 also has a shoulder surface 335 formed between the large and small diameter sections 333 , 332 .

The laser light-emitting element 34 is disposed in the large-aperture section 333 with a light-emitting portion 341 facing the small-aperture section 332 , and the inner peripheral surface of the large-aperture section 333 is surrounded by threads.

The resist ring 35 is screwed into the large aperture section 333 and presses the laser light emitting element 34 against the shoulder surface 335 .

As shown in FIG. 5 , the adjustment device 40 of the laser light emitting component 30 is used together with a laser light receiver 410 .

As shown in Figures 5, 6, and 7, which are schematic diagrams, perspective views, and cross-sectional views of the above-mentioned structure of the present invention, the adjustment device 40 includes a base 41, and a first height adjustment group arranged on the base 41 along a vertical direction Y 42. A fixed seat 43 arranged on the top of the first height adjustment group 42, an adjustment mechanism 44 arranged on the base 41, a movable seat 45 arranged between the fixed seat 43 and the adjustment mechanism 44, most of which are arranged on The elastic element 46 between the fixed seat 43 and the movable seat 45 , a first tightening screw 47 , a second tightening screw 48 , and a locking ring 49 .

The first height adjustment group 42 includes a base column 421, an adjustment ring 422 set on the base column 421, and a telescopic column 423 driven by the adjustment ring 422. The fixing seat 43 is arranged on the telescopic column 423 top.

The fixing seat 43 includes a first mounting hole 431 arranged along a horizontal direction X, a first fixing hole 432 vertically connected to the first mounting hole 431, and most of them are distributed in the first mounting hole along the horizontal direction X. 431 around class hole 433.

The adjustment mechanism 44 includes a second height adjustment group 441 arranged on the base 41 along the vertical direction Y, a connecting block 442 connected to the top of the second height adjustment group 441, a connecting block 442 connected to the connecting block along the horizontal direction X The length adjustment group 443 of block 442, and one is arranged on this length adjustment group 443 end and pushes block 444 with respect to this fixed base 43, the composition of this second height adjustment group 441, length adjustment group 443 and this first height adjustment The groups 42 are the same, and all include a base column, an adjustment ring, and a telescopic column.

The movable seat 45 includes an inner surface 451 facing the fixed seat 43, an outer surface 452 facing the push block 444, and a second mounting hole 453 arranged along the horizontal direction X and corresponding to the first mounting hole 431. , a second fixing hole 454 vertically connected to the second mounting hole 453 , and a plurality of guide rods 455 extending from the inner surface 451 corresponding to the stepped holes 433 .

The aforementioned elastic element 46 is a compression spring in this preferred embodiment, and is sleeved on the outside of the guide rod 455 .

When adjusting, the lens barrel 31 is sheathed in the first mounting hole 431 of the fixing seat 43, and the first tightening screw 47 is threaded in the first fixing hole 432 along the radial direction to make the lens barrel 31 is fixed, the focus tube 33 is sleeved in the second mounting hole 453 of the movable seat 45, the lock ring 49 is resisted by the outer surface 452 and screwed axially to the large aperture section of the focus tube 33 333 to fix the focusing barrel 33, the second tightening screw 48 is screwed in the second fixing hole 454 along the radial direction so that the focusing barrel 33 is further fixed.

Then, the plurality of guide rods 455 of the movable seat 45 are inserted into the plurality of step holes 433 of the fixed seat 43 , at this time, the two ends of the above-mentioned elastic element 46 respectively abut against the fixed seat 43 and the movable seat 45 .

As shown in FIG. 8, the operator can adjust to a consistent height through the first and second height adjustment groups 42, 441, and then adjust the length adjustment group 443 to make the push block 444 push the movable seat 45 to a fixed position. The seat 43 moves, and since the length adjustment group 443 has a screw pitch (pitch) in the present invention with a feed precision of 2mm, so when the operator is adjusting, the focus tube 33 also slides with a feed of 2mm. Move in the lens barrel 31 and slowly approach the focal point F of the lens 32. At this time, the operator can observe the clarity of the laser light through the laser light receiver 410 to ensure that the laser light emitting element 34 is Move to the focal point F and get the best output. During the adjustment process, the elastic force of the elastic element 46 can ensure that the outer surface 452 of the movable seat 45 is in close contact with the push block 444. When the length adjustment group 443 is repeatedly When the laser light-emitting element 34 is moved to the focal point F by operation and stretching, glue can be dispensed in the glue dispensing channel 315. After the glue is solidified, the length adjustment group 443 can be withdrawn, and the lens barrel 31 and the focus can be released. By locking the cylinder 33, the laser light-emitting assembly 30 with good focus can be obtained at last.

It is worth mentioning that during the focusing process, since the laser light-emitting element 34 will be connected with wires to obtain power supply, in this preferred embodiment, the pushing block 444 has two openings 445 extending toward the movable seat 45 , to be beneficial to allow wire to pass through when focusing, so as not to press the wire to affect the uniformity of power when the movable seat 45 is promoted.

Therefore, it can be found from the above-mentioned preferred embodiment that the present invention is characterized in that it does not need to use a threaded structure to adjust the lens barrel 31 and the focusing barrel 33, but adopts a slow-moving method for adjustment, so the The lens barrel 31 and the focusing barrel 33 no longer need thread processing, which reduces the man-hours and costs, and the use effect of precise focusing can be achieved as long as the high-precision length adjustment group 443 is used. In addition, because the present invention When focusing, the laser light-emitting element 34 approaches the focal point F of the lens 32 by moving in a straight line, so the optical axis deviation is not easy to occur, and the focusing time can be shortened and the accuracy of determining the optical axis can be improved.

Claims (10)

1. A laser light-emitting component, comprising a lens barrel, a lens arranged in the lens barrel, a focusing barrel arranged in the lens barrel, and a laser light-emitting element arranged in the focusing barrel, its Features: The lens barrel includes a first barrel wall surrounding an axis and defining a first through hole, and a dispensing channel passing through the first barrel wall and communicating with the first through hole; and The focus barrel is sleeved on the first through hole along the axis direction, and fixed to the lens barrel by dispensing glue in the glue dispensing channel. 2. The laser light-emitting component according to claim 1, wherein the first through hole of the lens barrel has a lens installation section, and a socket fixing section opposite to the lens installation section and accommodating the focusing barrel , the first cylinder wall also has a convex rib formed between the lens installation section and the sleeve fixing section, the lens is arranged on the lens installation section and abuts against the convex rib, and the dispensing channel is communicated with The socket secures the segment. 3. The laser light-emitting assembly as claimed in claim 1, wherein the focusing cylinder comprises a second cylinder wall surrounding the axis and defining a second through hole, the second through hole has a The small aperture section, and a large aperture section opposite to the small aperture section, the second cylinder wall also has a shoulder surface formed between the large and small aperture sections, the laser light emitting element is arranged on the In the large-aperture section and facing the small-aperture section, the peripheral surface of the large-aperture section is provided with internal threads, and the laser light-emitting component also includes a screw lock in the large-aperture section and presses the laser light-emitting element against the Resist ring on the yoke. 4. An adjustment device for a laser light-emitting component, the laser light-emitting component comprising a lens barrel, a lens arranged in the lens barrel, a focusing barrel, and a laser light-emitting element arranged in the focusing barrel, It is characterized by: The adjustment device includes a base, a fixed seat arranged on the base along a vertical direction, an adjustment mechanism arranged on the base, a movable seat arranged between the fixed seat and the adjustment mechanism, and at least one The elastic element between the fixed seat and the movable seat; where The fixing seat includes a first installation hole for fixing the lens barrel and is arranged along a horizontal direction; the adjustment mechanism includes a length adjustment group extending along the horizontal direction, and a length adjustment group arranged at the end of the length adjustment group and opposite to the The push block of the fixed seat; The movable seat is sleeved on the fixed seat along the horizontal direction, including an inner surface facing the fixed seat, an outer surface facing the push block, and a first installation hole arranged along the horizontal direction and corresponding to the first mounting hole. The second mounting hole is for fixing the focusing tube. 5. The laser light-emitting assembly according to claim 4, wherein the fixing base further includes a first fixing hole vertically connected to the first installation hole, and the adjustment device further includes a first fixing hole arranged on the first fixing hole Hole for the first tightening screw. 6. The laser light-emitting assembly according to claim 4, wherein the movable base further includes a second fixing hole vertically connected to the second mounting hole, and the adjusting device further includes a second fixing hole arranged on the second fixing hole. hole for the second set screw. 7 . The laser light emitting assembly as claimed in claim 6 , wherein the adjusting device further comprises a lock ring, the lock ring resists the outer surface of the movable seat and is screwed axially to the focusing cylinder. 8 . 8. The laser light-emitting assembly according to claim 4, wherein the fixed base further includes a plurality of step holes distributed around the first installation hole along the horizontal direction, and the movable base further includes a plurality of holes from the inner surface Corresponding to the guide rod extending from the plurality of stages of holes, the elastic element is sheathed on the outside of the guide rod. 9. The laser light emitting component according to claim 4, characterized in that: the laser light emitting component further comprises a first height adjustment group arranged on the base along the vertical direction, the first height adjustment group includes a base A column, a set of adjustment rings arranged on the base column, and a telescopic column driven by the adjustment ring, the fixing seat is arranged on the top of the telescopic column of the first height adjustment group. 10. The laser light emitting assembly according to claim 9, wherein the adjustment mechanism further comprises a second height adjustment group arranged on the base along the vertical direction, and a second height adjustment group connected to the top of the second height adjustment group The connection block, the length adjustment group is connected to the connection block, the composition of the second height adjustment group and the length adjustment group is the same as that of the first height adjustment group, including a base column, an adjustment ring, and a telescopic Column, the pushing block is a telescopic column connected to the length adjustment group.

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