KR100422258B1 - A Lighting Device - Google Patents

Abstract

The present invention relates to an optical lens capable of correcting chromatic aberration of light, and an illumination device capable of maintaining a constant intensity of light used for illumination by adding a reflection optical unit to the optical lens according to an illumination region. The lighting apparatus includes a light emitting array including a plurality of light sources, an optically corresponding lens positioned in front of the light source, an optical fiber for transmitting the light of each light source irradiated through the lens from one side to the other side, and the transmitted light. The optical fiber is configured to include a fiber bundle that is focused in a bundle so that it can be concentrated in one area. In addition, the reflecting optical unit is arranged to allow the homogeneous light to be expressed even if the illumination area is changed.

Description

Lighting device

The present invention relates to a lighting apparatus, and more particularly, by irradiating light irradiated from a light source to a fiber bundle using a lens or a lens and a reflecting optical unit, a light having a uniform light density without light loss can be illuminated in one region. It relates to a lighting device that can be.

In general, the lighting device is to illuminate a predetermined space using a variety of electric bulbs or lamps, such as electric, the degree of illumination is usually expressed as the brightness of the light per unit area.

This illuminance uses lux (lx) as its unit and is used differently depending on the purpose of the illumination area.

The lighting device is divided into a general form of combining light bulbs or lamps for home or office use, and a form requiring partial and intensive lighting, such as industrial or medical use.

Among them, the conventional lighting device for medical or industrial use generally takes the form of injecting light irradiated with a light bulb or a lamp as a light source into an optical fiber using a reflector or the like.

In the above lighting device, the bulb or the lamp has a form in which light irradiation is irregularly diffused, so that the light reflected through the reflector also has such an irregular shape.

As a result, when the irregular light reflected by the reflector is incident on the optical fiber, the light irradiated through the optical fiber to illuminate a predetermined region also has a problem that the density of the light is not uniform.

Nevertheless, the conventional lighting apparatus has a problem in that no correction element is provided to correct a form of irradiation of light emitted from the light source.

Accordingly, since it is impossible to express homogeneous light intensity in a field requiring intensive and homogeneous light illumination, such as surgery in a hospital, there is a problem of showing different images according to the user's vision.

Accordingly, the present invention has been made in view of the above problems, and a first object of the present invention is to provide a lighting apparatus capable of intensively illuminating light having a uniform light density in one region without light loss during irradiation. will be.

In addition, a second object of the present invention is to provide a lighting device that can easily change the size and shape of the lighting area.

The object of the present invention is a light emitting array (10) consisting of a plurality of light sources (11);

A lens 20 positioned in front of the light source 11 and correspondingly optically;

An optical fiber 31 for transmitting the light of each light source 11 irradiated through the lens 20 from one side to the other side; And

It is achieved by the lighting apparatus, characterized in that it comprises a; optical fiber 31 is bundled in the bundle fiber bundle 30 so that the transmitted light can be concentrated in one area.

In addition, the lens 20 is formed on the front surface of the light emitting array 10, the doublet lens 22 for correcting chromatic aberration, and the light irradiated from the doublet lens 22 to the fiber bundle 30 It is preferable to include the single lens 21 for intensive irradiation.

In addition, it is preferable that each light source 11 and the optically corresponding lens 20 of the light emitting array 10 are arranged to have an arc shape of a predetermined curvature so that light is irradiated to the fiber bundle 30.

Here, the first parabolic mirror 41 for reflecting the light irradiated through the lens 20 from the light emitting array 10,

The reflective optical unit 40 further comprising a second parabolic mirror 42 having a focal point corresponding to the first parabolic mirror 41 so that the reflected light is reflected back and focused on the fiber bundle 30. It is preferable.

In addition, it is preferable that a plurality of reflecting optical portions 40 are provided, and the fiber bundles 30 of each reflecting optical portion 40 are arranged to face one point.

In addition, the light source 11 is preferably any one selected from the group consisting of LED, light bulb, laser diode (LD).

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings.

1 is a block diagram of a lighting apparatus according to a first embodiment of the present invention,

2 is a block diagram of a lighting apparatus according to a second embodiment of the present invention;

3 is a configuration diagram of a lighting apparatus according to a third embodiment of the present invention;

4 is a configuration diagram of a lighting apparatus according to a fourth embodiment of the present invention;

5 is a configuration diagram of a lighting apparatus according to a fifth embodiment of the present invention;

6 is a configuration diagram of a lighting apparatus according to a sixth embodiment of the present invention.

<Description of the code according to the main part of the drawing>

10: light emitting array 11: light source

20: Lens 21: Single Lens

22: doublet lens 30: fiber bundle

31: optical fiber 40: reflective optics

41: first parabolic 42: second parabolic

100: lighting device

Next, the lighting apparatus according to the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a lighting apparatus according to a first embodiment of the present invention.

As shown in FIG. 1, the lighting apparatus 100 includes a light emitting array 10 in which a plurality of light sources 11 driven by electricity of low voltage are arranged in a line, and optically corresponds to each of the light sources 11. It consists of a lens 20, an optical fiber 31, one side of which is fixed to the front of each lens 20 in close proximity, and a fiber bundle 30 formed by converging the other side of the optical fiber 31 in a circular bundle.

Here, the light source 11 is a light emitting device capable of expressing light of a predetermined candela (Cd) or more, and includes a conventional LED, a laser diode (LD), a small bulb, and the like.

In addition, the lens 20 collects the light of the light source 11 constituting the light emitting array 10 and irradiates the optical fiber 31 installed near the front surface of the lens 20. Depending on the physical properties, it can take the form of single, double, or hybrid.

This means that if the property of the light is a monochromatic light, a single type lens 20 is used, and if the white light is required to correct chromatic aberration, a doublet or hybrid type lens 20 is used. Can be expressed.

In addition, the light from each light source 11 is irradiated corresponding to each lens 20, the irradiated light corresponding to the optical fiber 31 corresponding to each lens 20 in a 1: 1 manner By irradiating, the density of light illuminated in one region through the fiber bundle 30 may be homogeneous in all illumination regions.

2 is a block diagram of a lighting apparatus according to a second embodiment of the present invention.

As shown in FIG. 2, the lighting apparatus 100 includes a light emitting array 10 in which a plurality of light sources 11 are arranged in a line, and is located in front of the light emitting array 10 to form a light emitting array 10. One doublet lens 22 for comprehensively transmitting all light, one single lens 21 fixed to the front of the doublet lens 22, and fixed to a focus position of the single lens 21 Being made of a fiber bundle (30).

Since the light irradiated from the light emitting array 10 is white light which should correct chromatic aberration, a doublet lens 20 is used that can normally correct chromatic aberration.

In addition, the single lens 21 is irradiated with the chromatic aberration corrected from the doublet lens 22 to one side of the fiber bundle 30, the light is illuminated in one region through the other side of the fiber bundle (30) Can have a homogeneous light density in the illumination region.

The arrangement of the doublet lens 22 and the single lens 21 configured as described above takes the Kohler optical form in the conventional optical field, and the chromatic aberration is corrected but the irradiation form emits light that diffuses. It can lead to convergence in the area.

3 is a block diagram of a lighting apparatus according to a third embodiment of the present invention.

As shown in FIG. 3, the lighting apparatus 100 arranges the light sources 11 to take an arc shape having a predetermined curvature in a light emitting array 10 including a plurality of light sources 11, and the center of curvature thereof. It is made by placing the fiber bundle 30 in the corresponding place.

In addition, by arranging optically corresponding lens 20 on the front of each light source 11, the light from the light source 11 is concentrated through the lens 20 to concentrate on one side of the fiber bundle 30 Can be investigated.

Here, the lens 20 uses a collimating optical principle that focuses irregularly irradiated light from the light source 11 and guides the light to be parallel to the optical axis, and the light passing through the lens 20 It is called a collimating beam and can be irradiated to one side of the fiber bundle 30.

In addition, the light irradiated through the other side of the fiber bundle 30 may uniformly illuminate a predetermined region without changing the light density.

In addition, by adjusting the distance between the lens 20 and the light source 11 constituting the light emitting array 10, while maintaining the position of the fiber bundle 30, it is possible to change the intensity and illumination area of the light to be illuminated. .

In addition, the number of light sources 11 constituting the light emitting array 10 may be changed based on the distance between the fiber bundle 30 and the lens 20, thereby adjusting the intensity of light to be illuminated. .

4 is a configuration diagram of a lighting apparatus according to a fourth embodiment of the present invention.

As shown in FIG. 4, the lighting apparatus 100 includes a light emitting array 10 including a light source 11 and a reflection optical unit 40 disposed on the front surface of the lens 20 corresponding to the light. Can be reflected.

In addition, the light of the light source 11 irradiated through the lens 20 is reflected by the reflective optical unit 40 and eventually irradiated intensively to the fiber bundle 30, and may illuminate a predetermined region with the irradiated light.

In this case, the reflective optical unit 40 reflects the first parabolic mirror 41 reflecting light emitted from the light emitting array 10 through the lens 20, and reflects the reflected light to light the fiber bundle 30. The second parabolic mirror 42 has the same focal position as the first parabolic mirror 41 so as to concentrate the irradiation.

At this time, the light emitting array 10 is composed of a plurality of light sources 11, the lens 20 is fixed to the front corresponding to each light source 11, the lens 20 is a collimating optical principle On the basis of this, light emitted from the light source 11 may be induced to be parallel to the optical axis.

The light induced in parallel to the optical axis is referred to as a kind of collimating beam, and is reflected by the first parabolic mirror 41 and irradiated to the second parabolic mirror 42.

At this time, the light reflected by the first parabolic mirror 41 loses the properties of the previous collimated beam, and is only concentrated on the second parabolic mirror 42.

However, the second parabolic mirror 42 guides the light irradiated from the first parabolic mirror 41 to be parallel to the optical axis to restore the previous property as a collimating beam.

Therefore, the light finally irradiated to the fiber bundle 30 is a collimated beam having a more homogeneous light density.

In this way, the light irradiated through the lens 20 and the light reflected by the second parabolic mirror 42 are based on a collimated optical principle that leads to parallel to the optical axis, because the light is parallel to the optical axis. A homogeneous light density can be obtained.

In addition, the first parabolic mirror 41 and the second parabolic mirror 42 have the same focal position, and the theoretical background of the following equation, which is the principle of the infinite optical system.

Here, F1 is the focal length of the first parabolic mirror 41 and F2 is the focal length of the second parabolic mirror 42.

5 is a configuration diagram of a lighting apparatus according to a fifth embodiment of the present invention.

As shown in FIG. 5, the lighting device 100 includes a pair of reflective optical units 40, and the fiber bundles 30 of each reflective optical unit 40 are arranged to face one point.

This constitutes a configuration in which the light emitting array 10 and the lens 20 are one set with the reflective optical unit 40 and are symmetrically disposed about the fiber bundle 30.

Here, the reflective optical unit 40 is composed of a first parabolic mirror 41 and a second parabolic mirror 42 having the same focal position so as to optically correspond to the first parabolic mirror 41, and the light emitting array 10 ) Irradiates the reflective optical unit 40 with light through the lens 20.

In addition, the lens 20 induces the light to be parallel to the optical axis to have the characteristics of the collimated beam, the first parabolic mirror 41 is irradiated with the second parabolic mirror 42 Will be reflected.

At this time, the first parabolic mirror 41 only functions to intensively reflect the light to the second parabolic mirror 42 so that the light is reflected and loses its properties as a collimated beam.

However, the second parabolic mirror 42 restores its properties to the original collimated beam while reflecting the light parallel to the optical axis, and can be irradiated to the fiber bundle 30 at a higher intensity. .

At this time, since the fiber bundle 30 is irradiated with light from a pair of reflective optical units 40 located at both sides, the fiber bundle 30 can express twice the brightness as compared with irradiated with light from a single reflective optical unit 40. have.

In addition, one side of the fiber bundle 30 is bilaterally and optically corresponds to the second parabolic mirror 42 located at the front, respectively, the other side is bent vertically with respect to the one side, the incident through one side of the bundle 30 The traveling direction of the light is also bent and eventually illuminates a certain area through the other side.

Therefore, the light illuminating a predetermined region through the fiber bundle 30 is a light emitting array which is one set with the pair of reflective optical unit 40 and the reflective optical unit 40 symmetrically located on both sides of the bundle 30. Since it is irradiated through 10 and the lens 20, more powerful light intensity can be expressed.

6 is a configuration diagram of a lighting apparatus according to a sixth embodiment of the present invention.

As shown in FIG. 6, the lighting apparatus 100 includes a light emitting array 10 including a plurality of light sources 11 and a lens arranged to correspond to each light source 11 on the front surface of the light emitting array 10. And a reflection optical unit 40 reflecting light emitted from the lens 20 in multiple stages.

Here, the lens 20 guides the light emitted from the light source 11 in parallel to the optical axis to take the characteristics of the collimated beam, the light is irradiated in front of the lens 20 It is reflected by the parabolic mirror 41.

In addition, the fixed position of the reflective optical unit 40 is a position facing the front of the light emitting array 10 and the lens 20, that is, the position symmetrical with respect to the optical axis.

Accordingly, the first parabolic mirror 41 has a position facing the light emitting array 10 and the lens 20 from the front, and the second parabolic mirror 42 also has the light emitting array 10 and the lens ( It is fixed at the position facing 20).

Through this, the light from the light source 11 may be irradiated to the fiber bundle 30 with a uniform density without light loss, and the light irradiated through the fiber bundle 30 illuminates a certain region with a uniform light density. can do.

In the lighting device 100 according to the present invention as described above, the light source 11, in addition to the LED, laser diode (LD), a light bulb, the fiber bundle 30 irradiated with light from a halogen lamp or a halogen lamp to the light emission It can be used by arranging in the array 10 position.

In addition, the light source 11 constituting the light emitting array 10 may be optionally used among at least 20 or more.

In addition, a single set of the light emitting array 10 and the lens 20 and the reflecting optical unit 40 is a pair of symmetrically arranged around the fiber bundle 30 as described above, the fiber bundle ( Multiple sets can be arranged to be optically symmetric about 30).

In addition, the fiber bundle 30, in addition to the circular bundle form, may be used by varying the focusing shape, such as rectangular, annular, pentagonal, hexagonal.

In the lighting apparatus according to the present invention as described above, since the light of the irregularly radiating light source can be induced to be parallel to the optical axis to concentrate in one region, it is possible to illuminate a uniform light in one region without light loss. There is a characteristic.

Through this, it can be used for treatment and surgery in the medical field that requires partial and intensive lighting, and can be easily installed and used in industrial vision.

In addition, it is possible to vary the size of the illumination area by the reflection optical unit, and there is an effect that can express various types of illumination shapes, such as circular, annular, square, pentagonal, hexagonal, depending on the focusing shape of the fiber bundle.

In addition, since the configuration is relatively simple, and a conventional light source and a lens are used, the manufacturing and installation are simple.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, various other modifications and variations may be made without departing from the spirit and scope of the invention. Accordingly, it is intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

Claims (6)

A light emitting array 10 including a plurality of light sources 11; A lens 20 positioned in front of the light source 11 and correspondingly optically; An optical fiber 31 for transmitting the light of each light source 11 irradiated through the lens 20 from one side to the other side; And And a fiber bundle (30) in which the optical fibers (31) are focused in a bundle so that the transmitted light can be concentrated in one region. The method of claim 1, The lens 20 is disposed on the front surface of the light emitting array 10 to concentrate the doublet lens 22 to correct chromatic aberration, and the light emitted from the doublet lens 22 to the fiber bundle 30. Lighting device comprising a single lens 21 to the. The method of claim 1, The light sources 11 of the light emitting array 10 and the lenses 20 optically corresponding to the light sources 11 are arranged in an arc shape having a predetermined curvature so that light is irradiated to the fiber bundle 30. Illumination device characterized in that. The method of claim 1, A first parabolic mirror 41 reflecting light emitted from the light emitting array 10 through the lens 20, Reflective optics consisting of a second parabolic mirror 42 having a focal point corresponding to the first parabolic mirror 41 so that the light reflected from the first parabolic mirror 41 is concentrated and reflected on the fiber bundle 30. Lighting device, characterized in that 40 is further installed. The method of claim 4, wherein A plurality of reflecting optical portion (40) is provided, the illumination device, characterized in that the fiber bundle (30) of each reflecting optical portion (40) is arranged to face a point. The method of claim 1, The light source 11 is an illumination device, characterized in that one of the LED, laser diode (LD).