KR100485546B1 - lighting apparatus using optical fiber - Google Patents

Abstract

The optical fiber illuminating device which can divide and supply the light emitted from the light source into a plurality of optical fibers has a reflector for focusing and reflecting the light traveling backward in front of the light emitted from the light source installed in the case, and opposite the reflector around the light source. A cylindrical lens array which is installed but arranged in rows along a direction perpendicular to the optical axis of the light source, the cylindrical lens array arraying a plurality of cylindrical lenses each focusing the light emitted from the light source, and the light focused through the cylindrical lens At least one optical fiber array panel in which a plurality of optical fibers are arranged along the longitudinal axis of the cylindrical lens array to receive each. Such an optical fiber lighting device can increase the brightness of light transmitted to the optical fiber according to the optical fiber lighting device, and provides an advantage of easy position exchange and assembly in the vertical phase of the optical fiber array panel in which the optical fibers are arranged horizontally.

Description

Lighting apparatus using optical fiber

The present invention relates to an optical fiber illuminator, and more particularly, to an optical fiber illuminator structured to increase light utilization efficiency and brightness.

In addition to the widespread use of optical fibers, display lighting devices that can transmit color light through optical fibers are being used.

Conventional lighting equipment generally generates color light by rotating color filter wheels provided for each sector in which different color filters are partitioned from light emitted from a single light source.

Such an illuminator provides an advantage of splitting and transmitting light emitted from a single light source through a myriad of optical fibers to generate various color lights as desired.

By the way, the conventional optical fiber lighting device is configured to simply transmit the light emitted from the light source to the optical fiber, there is a disadvantage that the brightness of the optical fiber is determined according to the brightness capability of the light source.

In addition, by packaging the optical fibers for receiving the light emitted from the light source in a single bundle form, the receiving color of some optical fibers of the optical fibers that are coupled to each other in a bundle form without changing the color generation pattern of the color filter wheel. The disadvantage is that it is difficult to change. In particular, when it is difficult to change the position of the optical fiber portion installed in the display device, a structure that can easily change the position of the optical fiber portion facing the color filter wheel is required.

The present invention has been made to improve the above problems, and an object thereof is to provide an optical fiber lighting apparatus that can increase the brightness of the light transmitted to each optical fiber.

In addition, another object of the present invention is to provide an optical fiber lighting apparatus having a structure that is easy to replace the position and mounting of the optical fiber to the desired position.

In order to achieve the above object, an optical fiber lighting apparatus according to the present invention comprises: a light source installed in a case; A reflecting mirror focusing the light traveling backward from the light emitted from the light source and reflecting the light forward; Cylindrical lens which is installed opposite the reflector with respect to the light source and arranged in rows along a direction perpendicular to the optical axis of the light source to array a plurality of cylindrical lenses each focusing the light emitted from the light source. An array; And at least one optical fiber array panel in which a plurality of optical fibers are arrayed along a longitudinal axis of the cylindrical lens array to receive the focused light through the cylindrical lens.

Preferably, the reflecting mirror is applied to the parabolic mirror, the cylindrical lens is applied to the cylindrical shape.

The apparatus may further include a color filter wheel configured to filter light traveling from the light source to the cylindrical lens array to generate color light of a predetermined color, wherein the drum-type color filter wheel includes the light source and the cylindrical lens. A drum type color filter wheel is installed in the case so as to rotate a predetermined position between the arrays and rotate along a predetermined circular orbit outside the reflector and the light source.

The optical fiber array panel and the lower substrate; An upper substrate spaced apart from the lower substrate by a predetermined distance; A plurality of optical fibers arranged in parallel and fixedly arranged between the lower substrate and the upper substrate; And first and second barrier ribs disposed to constrain the optical fiber along an edge region between the lower substrate and the upper substrate.

More preferably, further comprising an adapter for mounting the optical fiber array panel and the cylindrical lens to be coupled to the case, wherein the adapter has a sliding guide groove in which the optical fiber array panel is slidingly inserted can be vertically predetermined. Intervals are formed, and mounting grooves for vertically arranging the cylindrical lenses are formed on positions where light can be transmitted to the optical fiber array panel mounted along the sliding guide grooves.

In addition, the optical fiber array panel is provided with a protrusion that can be guided and inserted into the sliding guide groove.

Hereinafter, an optical fiber lighting apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a color filter wheel separated from a top case of an optical fiber lighting apparatus according to a preferred embodiment of the present invention, and FIG. 2 is a schematic plan view of FIG.

Referring to the drawings, the optical fiber illuminator 100 includes a light source 133, a reflector 130, a drum-type color filter wheel 140, a cylindrical lens array 170 and an optical fiber array panel (see FIG. 3: 190). It is provided.

The lower case 110 can be combined with the upper case (not shown), and various elements are installed in the inner space.

Reference numeral 113 of the elements installed in the lower case 110 is a heat dissipation blowing fan for cooling the heat generated from the light source 133, and reference numeral 115 is installed to supply and cut off power to the element operated by the power. A power switch, reference numeral 117 denotes a power input terminal for receiving commercial AC power, and reference numeral 121 denotes a ballast for controlling power supply to the light source 133. The ballast 121 may be omitted depending on the driving method of the light source 133 is applied.

The light source 133 is mounted to the reflector 130 to be positioned at the focal position of the reflector 130. Reference numeral 131 denotes a support member installed in the lower case 110 to support the reflector 130 on which the light source 133 is mounted.

The light source 133 may be a light source suitable for various lamps, for example, halogen lamps.

The reflector 130 may be a parabolic or ellipsoidal mirror.

The drum-type color filter wheel 140 may generate color light by filtering the light reflected directly from the light source 133 or straight from the reflector 130 to a predetermined color.

As shown, the drum-type color filter wheel 140 has a predetermined position between the light source 133 and the cylindrical lens array 171 as the center of rotation, and the reflector 130 and the light source 133 are positioned within the radius. It has been applied to have a diameter of a size that can be.

The drum-type color filter wheel 140 may be rotated by the motor 150 installed in the support member 149 installed at the lower case 110 at a height high enough not to interfere with the light emitted from the light source 133. Are combined.

As an example of the power transmission structure for transmitting the driving force of the motor 150 to the drum-type color filter wheel 140, as shown in the rotation shaft 151 extending to protrude from the motor 150 to the upper surface of the support member 149 A fitting hole 143 that can be fitted to the coupling bar 153 coupled to extend a predetermined length in a direction parallel to the upper surface of the support member 149 is formed in the drum-type color filter wheel 140.

In addition, in order to facilitate rotation of the drum-type color filter wheel 140, a guide disk 154 is provided on the upper surface of the support member 149 at the lower end of the rotation shaft to have a larger outer diameter than the rotation shaft 151.

Therefore, when the fitting hole 143 of the drum-type color filter wheel 140 is installed to be fitted to the outside of the rotation shaft 151 and the coupling bar 153, the drum-type color filter wheel (corresponding to the rotation direction of the motor 150) 140 is rotated while being supported by the guide disk 154.

The drum-type color filter wheel 140 has an advantage of applying various color filters 147 in a desired pattern on the circumferential surface, and can generate different color patterns and color lights by dividing sectors vertically. Provide advantages. Reference numeral 145 denotes a ventilation hole.

The upper plate 141 of the drum-type color filter wheel 140 is formed of a metal material, for example, aluminum, and the portion 142 extending downward from the upper plate 141 is formed of a transparent material, for example, an acrylic material. A color filter 147 of a desired color may be attached to a transparent material and used.

Unlike the illustrated example, although the light utilization efficiency is slightly lowered and the color filter application area is somewhat smaller, the disk plate-shaped color filter wheel can be installed so that the optical axis is the rotation center.

An adapter 180 is installed at a portion of the opening 110b of the rear plate 110a of the lower case 110.

The adapter 180 is configured to mount the cylindrical lens array 170 and the optical fiber array panel 190.

The cylindrical lens array 170 is installed such that the cylindrical lenses 171 are vertically arrayed on the adapter 180 as shown in FIG. 3.

Cylindrical lens as defined in the present invention means that at least a portion of the cross section has a curvature, the cross section is the same structure along the longitudinal direction.

Preferably, the cylindrical lens 171 is preferably a cylindrical type that provides ease of assembly. The cylindrical lens 171 is mounted on the adapter 180 when the cylindrical type is applied separately so that the cylindrical lens 171 may be vertically arranged.

Preferably, the length of the cylindrical lens 171 is slightly larger than the length in one direction of the cross-sectional area of the light beam emitted from the light source 133.

As a material of the cylindrical cylindrical lens 171, various known materials such as a transparent crystal or a transparent synthetic resin, for example, a PVC material, may be applied.

The cylindrical lens array 170 may divide and divide incident light in units of the cylindrical lenses 171 and transmit the incident light to the corresponding optical fiber array panel 190, thereby carrying the light flux emitted from the light source 133. It also provides an advantage that can be used by dividing the area unit corresponding to the surgical lens 171. Accordingly, in consideration of such matters, the color filter 147 may be independently applied to each area on the circumferential surface of the drum-type color filter wheel 140 corresponding to the projection area of the cylindrical lens 171.

According to another aspect of the present invention, a semi-cylindrical cylindrical lens (not shown) having a semi-circular cross section may be applied. In addition, as illustrated in FIG. 7, a cylindrical lens 271 having an elliptical shape having a cross-section 271a perpendicular to the longitudinal direction may be applied.

In addition, it is a matter of course that the cylindrical lens 171 integrally molded so as to bark the heat vertically can be applied.

 For example, as shown in FIG. 8, the unit cylindrical lens 371 (part divided by a dotted line) having a portion extending at a predetermined length from the end of the portion having curvature is integrally molded vertically and arrayed. Of course it can be applied. In addition, the unit cylindrical lens 371 of the illustrated structure may be separately manufactured and mounted on the adapter 180 described above to be arrayed.

The structure of the unit cylindrical lens 371 shown in FIG. 87 determines the distance d of the portion extending from the end of the curvature portion appropriately in the molding design so as to correspond to the focal length with the optical fiber 195. Alignment for focusing provides an advantage of easy alignment for focusing.

The cylindrical lens array structure described above has a disadvantage in that the brightness decreases as the spherical collimating lens is moved away from the optical axis, while maintaining the density of light almost uniform along the direction perpendicular to the optical axis. This provides an advantage of reducing the luminance difference between the light beams emitted through each of the optical fibers 195.

Meanwhile, a plurality of optical fiber array panels 190 are provided to correspond to the respective cylindrical lenses 171 as shown in FIG. 3.

The optical fiber array panel 190 includes an upper substrate 191, a lower substrate 193, a partition 194, and an optical fiber 195.

The upper substrate 191 and the lower substrate 193 are coupled by the partition wall 194 to maintain a separation distance corresponding to the diameter of the optical fiber 195 to be applied. The partition 194 also functions to confine the optical fiber 195 by limiting a space for installing the optical fiber.

The optical fibers 195 are arrayed in a line along the longitudinal direction, ie, the longitudinal axis, of the cylindrical lens 171 in the space between the upper substrate 191 and the lower substrate 193.

The optical fiber array panel 190 is typically attached to the substrates 191 and 193 using an adhesive so that the optical fiber 195 of the portion inserted between the substrates 191 and 193 is fixed to the substrates 191 and 193. The optical fiber 195 is fixed.

In addition, in order to increase the light utilization efficiency, the cylindrical lenses 171 are arrayed in a line with each other, and the height of the optical fiber array panel 190 is determined to be equal to or less than the cylindrical lenses 171.

When the optical fiber array panel 190 is formed at the same height as the cylindrical lens 171, the adapter 181 may be installed to sequentially install the optical fiber array panel 190 and the cylindrical lens 171 vertically. Apply it.

As shown in FIG. 4, the optical fiber lighting device 100 having such a structure is focused by the cylindrical lens 171 that is emitted from the light source 133 and passed through the drum-type color filter wheel 140. By entering the light source 195, the luminance of light transmitted to the optical fiber 195 may be higher than that of the light source 133.

On the other hand, when the height of the optical fiber array panel 190 is different from the diameter of the cylindrical lens 171, for example, or small, it is possible to facilitate the alignment of each of the cylindrical lens 171 and the optical fiber 195. One example of a structured adapter is shown in FIGS. 5 and 6.

Referring to the drawings, the adapter 280 has a housing 281 and a cover plate 287.

The housing 281 has a vertically constant sliding guide groove 285 vertically supported by each optical fiber array panel 290 so that the optical fiber array panel 290 can be vertically mounted in multiple stages. The gap is formed.

The distance between the sliding guide grooves 285, that is, the height of the protrusion 285a may correspond to or slightly smaller than the height of the portion of the optical fiber array panel 290 not inserted into the sliding guide grooves 285.

In the illustrated example, the lower substrate 293 of the optical fiber array panel 290 has a protrusion 293a formed longer than the upper substrate 291 and the partition 294, and the protrusion 293a is a sliding guide groove ( 285), a structure that is inserted and supported is applied. Alternatively, the upper substrate 291 may be formed to have a protruding portion extending from the lower substrate 293 and the partition 294, or the partition 294 may be formed to have the protrusion. Alternatively, it is a matter of course that the optical fiber array panel 290 as shown in FIG. 3 can be entered along the guide groove 285.

The housing 280 is mounted to vertically mount the cylindrical lens 171 on a position where light can be transmitted to the optical fiber array panel 290 mounted along the sliding guide groove 285. The groove 283 is formed.

The mounting groove 283 is formed to have a front opening 283a in which the front surface facing the light source 133 is partially opened, and a rear opening formed in communication with the opening 281a of the housing. The width of the opening 283a is slightly smaller than the length of the cylindrical lens 171 to be applied so that the cylindrical lens 171 is not separated.

The cover plate 287 is configured to restrain the optical fiber array panel 290 mounted along the sliding guide groove 285 in the housing 281 and to allow the optical fiber 195 to be drawn out.

The cover plate 287 may be formed to have an opening having a length slightly smaller than the length between the sliding guide grooves 285 corresponding in the horizontal direction.

Therefore, according to the adapter 281 having this structure, the cylindrical lens 171 is sequentially introduced into the mounting groove 283 of the housing 281, and the optical fiber array panel 290 is inserted into the sliding guide groove 285 at a desired position. After mounting the cover 287 to the housing 281 with the coupling member, the optical lens 171 and the optical fiber 195 of the optical fiber array panel 290 are automatically aligned and mounted to each other. Provides an easy assembly for the alignment of the.

In addition, it is possible to change the color light generated in the optical fiber by changing the mounting position of the optical fiber array panel without changing the color generation pattern of the drum-type color filter wheel 140.

According to the optical fiber lighting apparatus according to the present invention as described so far, the brightness of the light transmitted to the optical fiber can be increased, and the position of the optical fiber array panel in which the optical fibers are arranged horizontally can be easily exchanged and installed in the vertical position. do. In addition, it is possible to reduce the brightness of the light source required to obtain the desired luminance in the optical fiber can be miniaturized, and the heat generation is reduced, thereby improving the durability.

1 is a perspective view showing the separation of the color filter wheel in a state in which the upper case of the optical fiber lighting apparatus according to the preferred embodiment of the present invention,

FIG. 2 is a schematic plan view of FIG. 1;

3 is a perspective view showing an extract of some elements of FIG.

4 is a view showing a process in which light is focused onto an optical fiber through a cylindrical lens;

Figure 5 is a perspective view showing a state in which the cover plate is removed as another embodiment of the adapter of Figure 1,

6 is an exploded perspective view illustrating the cover of the adapter of FIG. 5 together;

7 is a perspective view illustrating an elliptical cylindrical lens applied to a cylindrical lens array according to another embodiment of the present invention.

8 is a perspective view illustrating a cylindrical lens array according to a third embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

100: optical fiber illuminator 110: lower case

130: reflector 133: light source

140: drum type color filter 150: motor

171: cylindrical lens 181, 281: adapter

195: optical fiber

Claims (8)

A light source installed in the case; A reflecting mirror focusing the light traveling backward from the light emitted from the light source and reflecting the light forward; Cylindrical lens which is installed opposite the reflector with respect to the light source and arranged in rows along a direction perpendicular to the optical axis of the light source to array a plurality of cylindrical lenses each focusing the light emitted from the light source. An array; And at least one optical fiber array panel in which a plurality of optical fibers are arranged along a longitudinal axis of the cylindrical lens array so as to receive the focused light through the cylindrical lens, respectively. The optical fiber illuminating device according to claim 1, wherein the reflector is a parabolic mirror. The optical fiber illuminating device according to claim 1, wherein the cylindrical lens is cylindrical. The optical fiber illuminating device according to claim 1, further comprising a color filter wheel for filtering light traveling from the light source to the cylindrical lens array to generate color light of a predetermined color. The method of claim 4, wherein the drum-type color filter wheel is installed in the case so as to be rotated along a predetermined circular trajectory of the reflector and the outside of the light source as a center of rotation between a predetermined position between the light source and the cylindrical lens array. Optical fiber lighting equipment, characterized in that the drum type color filter wheel. The optical fiber illuminating device according to claim 1, wherein a plurality of the optical fiber array panels are arrayed along an arrangement direction of the cylindrical lens. The optical fiber array panel of claim 6, wherein A lower substrate; An upper substrate spaced apart from the lower substrate by a predetermined distance; A plurality of optical fibers arranged in parallel and fixedly arranged between the lower substrate and the upper substrate; And first and second barrier ribs arranged to constrain the optical fiber along an edge area between the lower substrate and the upper substrate. The apparatus of claim 1, further comprising an adapter for mounting the optical fiber array panel and the cylindrical lens to couple the case to the case. The adapter has a sliding guide groove which can be inserted into the optical fiber array panel is vertically spaced apart a predetermined interval, And a mounting groove for installing the cylindrical lens in a vertical row on a position where light can be transmitted to the optical fiber array panel mounted along the sliding guide groove.