TWI394995B - Exposure apparatus - Google Patents

Description

Exposure device

The invention relates to an exposure device, in particular to an exposure device which can be used in the assembly process of a lens module.

Lens modules used in cameras or optical instruments typically include components such as a lens mount, a lens barrel, a lens group, a spacer ring, and a filter. The lens group, the spacer ring and the filter are sequentially fixed in the lens barrel along the optical axis direction of the lens module. The outer wall of the lens barrel and the inner wall of the lens holder are usually provided with matching threads, and the lens barrel is screwed into the lens holder to be fixed.

In the assembly process of the lens module, optical components such as lenses and filters are incorporated into the lens barrel and fixed, usually UV glue (ultraviolet glue) is applied to the optical component, and then the UV light is emitted from the light source of the exposure machine. The light cures the UV glue on the optical element to fix the optical components such as the lens and the filter in the lens barrel. However, the UV light emitted by the light source of the previous exposure machine has uneven distribution of light intensity. Generally, the light intensity is stronger when the light source is coated with the UV glue. After exposure, it is easy to cause overexposure, and the UV glue yellowing loses the adhesion function; if the UV glue is exposed to light with less light intensity, it is easy to cause underexposure, and the UV glue cannot be cured, and the optical component cannot be firmly adhered. .

In view of the above, it is necessary to provide an exposure apparatus which can uniformly expose an exposed object.

An exposure apparatus which can uniformly expose an exposed object will be described below by way of example.

An exposure apparatus comprising a light source and a bearing mechanism disposed opposite the light source, the light beam emitted by the light source being projected onto the carrying mechanism, the carrying mechanism comprising a carrying platform, one disposed on the carrying platform and provided with internal teeth a ring gear of a tooth, a first gear disposed on the platform and having a central axis with the ring gear, at least one disposed between the ring gear and the first gear and respectively associated with the internal teeth of the ring gear a second gear meshing with the first gear, a surface of the at least one second gear facing the light source is provided with at least one receiving groove for receiving the exposed object, the at least one second The gear can rotate about its own centerline while rotating about the central axis.

Compared with the prior art, the at least one second gear can be rotated about its own center line, so that at least one receiving groove of the at least one second gear for accommodating the exposed object and the light source The relative distance is periodically changed, that is, the accommodating groove periodically passes through a region where the light intensity generated by the light source is strong and a region where the light intensity is weak; the at least one second gear can surround the center of the first gear The axis is rotated such that the accommodating groove periodically passes through a region where the light intensity generated by the light source in the circumferential direction of the first gear is strong and the light intensity is weak, thereby uniformly exposing the exposed object.

The exposure apparatus of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1 , an exposure apparatus 10 according to a first embodiment of the present invention includes a light source 11 and a carrier mechanism 12 disposed opposite the light source 11 .

The light source 11 is configured to emit a light beam capable of exposing the exposed object to the carrier mechanism 12, such as ultraviolet light or the like. In the present embodiment, the light source 11 is disposed at a fixed position relative to the carrier mechanism 12.

The carrier mechanism 12 includes a carrier 121, a ring gear 122, a sun gear 123, a drive source 124 and four rotating gears 125.

The ring gear 122 is fixed on the bearing table 121. The ring gear 122 is provided with an internal tooth 1221. The type and parameters of the internal tooth 1221 can be set according to actual needs.

The sun gear 123 is provided on the supporting table 121 and the ring gear 123 is provided with a total of 122 ₁ center, the center axis O of the outer gear teeth 1231.

The driving source 124 is used to drive the sun gear 123 to rotate about the central axis O ₁ . In the embodiment, the driving source 124 includes a driver 1241 and a driving shaft 1242. The driver 1241 is a motor disposed on a side of the carrier 121 facing away from the light source 11. One end of the driving shaft 1242 The central position of the sun gear 123 is fixedly coupled, and the other end thereof is mechanically coupled to the driver 1241 through the carrier 121. The driver 1241 drives the transmission shaft 1242 to rotate to drive the central gear 123 to rotate about the central axis O ₁ , and the rotational speed of the central gear 123 can also be controlled by the driver 1241 .

The four rotating gears 125 are rotatably disposed on the carrying platform 121. For example, a ball, a rotating shaft, or the like is disposed between the rotating gear 125 and the carrying table 121. In this embodiment, the four rotating gears 125 are evenly disposed between the ring gear 122 and the sun gear 123 along the circumferential direction of the sun gear 123. Each of the rotating gears 125 is provided with an external tooth 1251, and each The outer teeth 1251 of the rotating gears 125 are respectively engaged with the inner teeth 1221 of the ring gear 122 and the outer teeth 1231 of the center gear 123; the surface 1252 of each of the rotating gears 125 opposite to the light source 11 is provided with Two accommodating grooves 1253 for accommodating the exposed objects, the two accommodating grooves 1253 are axially symmetrically arranged with the central axis O _{2 of} the rotating gear 125.

It can be understood that the center line position of the bottom surface of each of the rotating gears 125 opposite to the loading table 121 may be provided with a rotating shaft 1254, and the carrying platform 121 is provided with an annular groove centered on the central axis O _{1 .} 1211. Here, the rotating shafts 1254 of the four rotating gears 125 are disposed in the annular groove 1211, so that each rotating gear 125 has a fixed trajectory when rotating on the carrying table 121, and each rotation is performed. The resistance of the gear 125 to rotate on the carrier 121 is smaller, as shown in FIG. The number of the rotating gears 125 is not limited to the embodiment, and the rotating gears 125 may be one or plural (for example, four) as long as they can mesh with the ring gear 122 and the center gear 123, respectively. The number and arrangement of the accommodating grooves 1253 disposed on the surface 1252 of the rotating gear 125 are not limited to the embodiment. The accommodating groove 1253 may be one or plural (for example, four), and the rotating gear 125 may be The surface 1252 is evenly distributed and may also be irregularly distributed.

The following is a brief description of the operation of the exposure apparatus 10 provided by the first embodiment of the present invention by taking an exposure of the component coated with the UV glue in the lens barrel of the lens module as an example: the lens barrel is placed in each rotation separately. The gear 125 is received in the groove 1253 so that the component coated with the UV glue in the lens barrel is opposite to the light source 11; the light source 11 is turned on to emit ultraviolet light, and the driving source 124 is activated to drive the central gear 123 in one direction. A rotation, because the external gear 1231 of the central gear 123 meshes with the external teeth 1251 of each of the rotating gears 125, and the external teeth 1251 of each of the rotating gears 125 and the ring gear 122 fixed to the bearing table 121 within tooth 1221 engages gear 125 so that rotation of each rotatable about the center axis O ₁ in the direction A, while each rotating gear 125 about its own axis O ₂ of the center along the direction counter to direction A rotation.

Since the intensity distribution of the light beam emitted by the light source 11 is generally non-uniform, when the light source 11 is incident on the ring gear 122 at a different intensity from the point where the relative distance between the light source 11 and the light source 11 is different, the ring gear 122 is generally The smaller the relative distance between the point and the light source 11 is, the stronger the light intensity is. Each of the rotating gears 125 can rotate around the central axis O ₂ in the opposite direction to the direction A, so that the surface 1252 of each rotating gear 125 is The relative distance of the point from the source 11 will produce a periodic variation, i.e., the point on the surface 1252 of each of the rotating gears 125 will periodically pass through a region of stronger light intensity and a region of weaker light intensity. Further, when the light source 11 is incident on the ring gear 122 at a different intensity along the circumferential direction of the central gear 123, the light intensity of the light beam emitted from the light source 11 is generally along the circumferential direction of the central gear 123. cyclical distribution, and the rotation of each gear 125 about the center axis O ₁ in the direction a, so that the points on the surface of the 1,252,125 each periodic rotation gear through the region with strong intensity than the light intensity Weak area. In addition, the driving source 124 can also control the rotation speed of the sun gear 123. Therefore, the time that the receiving groove 1253 of each rotating gear 125 stays in a region where the light intensity is strong and the region where the light intensity is weak will also generate periodicity. Variety.

When the relative distance between the accommodating groove 1253 and the light source 11 is gradually decreased, the light intensity of the light beam incident on the lens barrel placed in the accommodating groove 1253 becomes stronger, when the accommodating groove 1253 and the light source 11 are When the relative distance is gradually increased, the light intensity of the light beam incident on the lens barrel placed in the accommodating groove 1253 becomes weaker and weaker. When the accommodating groove 1253 is wound around the central axis O ₁ along the central gear 123 When rotating in the circumferential direction, the intensity of the light beam incident on the lens barrel placed in the receiving groove 1253 will periodically change, and the lens barrel placed in the receiving groove 1253 is controlled to have a stronger light intensity than the light intensity. When the weak area stays, the UV glue in the lens barrel can be uniformly exposed, thereby ensuring that the UV glue in the lens barrel is not overexposed or underexposed, so that the UV glue adheres well to the optical in the lens barrel. element.

Referring to FIG. 3 and FIG. 4, an exposure apparatus 20 according to a second embodiment of the present invention is substantially the same as the exposure apparatus 10 provided in the first embodiment, except that the exposure apparatus 20 includes a driving unit. The driving source 224 of the ring gear 222 rotates about the central axis O ₁ . In the embodiment, the driving source 224 includes a driver (for example, a motor) 2241 and a driving gear 2242 ; the ring gear 222 is rotatably disposed on the carrying platform 221 . on, in the present embodiment, the ring 222 opposite the bottom surface 221 is provided with a rotary shaft 2223 and the supporting table, while the supporting table 221 disposed on the center axis O ₁ of the center of the annular groove 2211, in this The ring gear 2223 of the ring gear 222 is disposed in the annular groove 2211; the ring gear 222 is provided with an external tooth 2222, and the tooth 2222 outside the ring gear 222 meshes with the driving gear 2242 of the driving source 224; the sun gear 223 is fixed on the carrier table 221 and _1, four rotary gear 125 is rotatably disposed on the supporting table 221 and the common center axis O ring 222, in this embodiment, each rotary gear On the bottom surface of the opposite side of the carrier 221 Opposing balls 1255; 2231 teeth 1251, respectively, and the inner tooth gear 222. The teeth 2221 of the sun gear 223 and the outside of each of the rotary gear 125 meshed outside.

In this embodiment, the driving source 224 can drive the ring gear 222 to rotate in a direction B around the central axis O ₁ , thereby driving each rotating gear 125 to rotate in the direction B about the central axis O ₁ while each rotating gear 125 rotates in its direction B about its own central axis O ₂ , so the point on the surface 1252 of each rotating gear 125 will periodically pass through a region of stronger light intensity and a weaker light intensity, and the driving source 224 The rotation speed of the ring gear 222 can also be controlled, so that the time that the receiving groove 1253 of each of the rotating gears 125 stays in a region where the light intensity is strong and the region where the light intensity is weak will also periodically change. Thus, it can be seen that the exposed object can be uniformly exposed by the exposure device 20.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims.

Exposure device. . . 10,20

light source. . . 11

Carrying mechanism. . . 12

Carrying platform. . . 121,221

Ring gear. . . 122,222

Center gear. . . 123,223

Drive source. . . 124,224

Rotating gears. . . 125

Internal tooth. . . 1221, 2221

transmission shaft. . . 1242

driver. . . 1241, 2241

surface. . . 1252

Hold the slot. . . 1253

Rotating shaft. . . 1254, 2223

Ring groove. . . 1211, 2211

Drive gear. . . 2242

Balls. . . 1255

External teeth. . . 1231,1251,2222,2231

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the structure of an exposure apparatus according to a first embodiment of the present invention.

Figure 2 is a cross-sectional view taken along line II-II of Figure 1.

Figure 3 is a schematic view showing the structure of an exposure apparatus according to a second embodiment of the present invention.

Figure 4 is a cross-sectional view taken along line IV-IV of Figure 3.

Exposure device. . . 10

light source. . . 11

Carrying mechanism. . . 12

Carrying platform. . . 121

Ring gear. . . 122

Center gear. . . 123

Drive source. . . 124

Rotating gears. . . 125

Internal tooth. . . 1221

surface. . . 1252

Hold the slot. . . 1253

External teeth. . . 1231,1251

Claims (10)

An exposure device comprising a light source and a bearing mechanism disposed opposite the light source, the light beam emitted by the light source being projected onto the carrying mechanism, the improvement being that the carrying mechanism comprises a carrying platform, and one is disposed on the carrying platform And a ring gear provided with an internal tooth, a first gear disposed on the bearing table and coaxial with the ring gear, at least one disposed between the ring gear and the first gear and respectively coupled to the ring gear a second gear that meshes with the inner tooth and the first gear, and a surface of the at least one second gear facing the light source is provided with at least one receiving groove for receiving the exposed object, The at least one second gear rotates about the central axis while rotating about its own centerline. The exposure apparatus of claim 1, wherein the light source is disposed at a fixed position relative to the stage. The exposure apparatus of claim 1, wherein the ring gear is fixed to the carrier, the carrier mechanism further comprising a driving source for driving the first gear around the center The axis rotates. The exposure apparatus of claim 3, wherein the driving source comprises a transmission shaft and a driver, and one end of the transmission shaft is fixedly connected to the first gear through the loading platform, and the other end of the transmission shaft Mechanically coupled to the driver, the driver is disposed on a side of the carrier that faces away from the light source. The exposure apparatus of claim 1, wherein the number of the at least one second gear is plural, and the plurality of second gears are evenly disposed on the ring gear and the first along a circumferential direction of the first gear The gears mesh with the internal teeth of the ring gear and the first gear. The exposure apparatus of claim 1, wherein the number of the at least one accommodating groove is plural, and the plurality of accommodating grooves are evenly distributed along a circumference of the second gear on which the plurality of accommodating grooves are disposed Settings. The exposure apparatus of claim 1, wherein a center line position of a bottom surface of the at least one second gear opposite to the stage is provided with a rotating shaft, and the stage is provided with the center axis as a center An annular groove, the rotating shaft is disposed in the annular groove. The exposure device of claim 1, wherein the first gear is fixed on the loading platform, the ring gear is further provided with external teeth, and the bearing mechanism further comprises a driving source, and the driving source is used To drive the ring gear to rotate about the central axis. The exposure apparatus of claim 8, wherein the driving source comprises a driver and a driving gear mechanically coupled to the driver, the driving gear meshing with a tooth outside the ring gear. The exposure apparatus of claim 8, wherein a bottom surface of the ring gear opposite to the loading platform is provided with a rotating shaft, and the loading platform is provided with an annular groove centered on the central axis, The rotating shaft is installed in the annular groove.