KR101779082B1 - Collimate lens assembly - Google Patents

Collimate lens assembly Download PDF

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Publication number
KR101779082B1
KR101779082B1 KR1020150190562A KR20150190562A KR101779082B1 KR 101779082 B1 KR101779082 B1 KR 101779082B1 KR 1020150190562 A KR1020150190562 A KR 1020150190562A KR 20150190562 A KR20150190562 A KR 20150190562A KR 101779082 B1 KR101779082 B1 KR 101779082B1
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KR
South Korea
Prior art keywords
led
collimator lens
light source
photodiode
light amount
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Application number
KR1020150190562A
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Korean (ko)
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KR20170079709A (en
Inventor
김다두
조경주
Original Assignee
김다두
원광대학교산학협력단
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Priority to KR1020150190562A priority Critical patent/KR101779082B1/en
Publication of KR20170079709A publication Critical patent/KR20170079709A/en
Application granted granted Critical
Publication of KR101779082B1 publication Critical patent/KR101779082B1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/003—Lens or lenticular sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • G01J2001/4446—Type of detector
    • G01J2001/446—Photodiode

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Led Device Packages (AREA)

Abstract

The present invention relates to a collimator lens assembly, in which at least one reflecting surface whose upper direction is open and whose inner circumferential surface in a hollow cylindrical shape is inclined at a predetermined angle is formed, and a first collimator lens A light source unit mounted in the inside of the reflection case and having at least one LED arranged on one side of the LED facing the upper surface or the reflection surface, a photodiode mounted on the reflection surface to measure the light amount of the LED light source, And the initial value of the voltage transmitted to the LED and the initial value of the light amount of the LED light source transmitted to the photodiode are measured and when the light amount of the LED light source transferred to the photodiode is decreased or increased, And a control unit for controlling the light amount to be equal to the initial value of the light amount.

Description

COLLIMATE LENS ASSEMBLY < RTI ID = 0.0 >

The present invention relates to a collimator lens assembly, and more particularly, to a collimator lens assembly capable of maintaining an initial value of a light amount while controlling a voltage to be transmitted to an LED so as to maintain an initial light amount of the LED light source at a constant value.

Recently, in order to produce a molded article having a three-dimensional shape, a 3D printer for producing a three-dimensional molded article using 3D design drawing data designed through a three-dimensional modeling tool has appeared.

The 3D printer uses SLA (Stereo Lithography Apparatus), which uses the principle that the scanned part is cured by scanning the laser light to the photo-curing resin. In the SLA method, functional polymer or metal powder is used instead of photo- SLP (Fused Deposition Modeling) and DLP (Digital Light Processing) using the principle of partial curing by irradiating light to the lower part of the storage tank storing the photocurable resin, using SLS method (Sintering Laser Sintering) .

Of these, DLP type conventional 3D printers irradiate the DLP projector with light under the storage tank in which the photocurable resin is stored. The molding stage is inserted into the interior of the transparent material storage tank, the area irradiated with light is cured, and a cured layer corresponding to the sectional shape of the molded article is formed on the stage. The molding stage gradually rises and the cured layer is laminated in multiple layers to form a three-dimensional molded product.

The conventional DLP projector has a problem that the curing speed of the molded product is not constant because the amount of light to be irradiated to the reservoir is unstable.

In addition, the conventional DLP projector has a problem that the focal point of light is not constant and the height of the sectional shape of the molded article can not be uniformly formed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a collimator lens assembly capable of uniformly irradiating light from a DLP projector to a reservoir and adjusting the focus of light.

According to an aspect of the present invention, there is provided a display device including at least one reflective surface having an open upper side and a hollow cylindrical inner peripheral surface inclined at a predetermined angle, and a first collimator lens mounted ; A light source mounted within the reflective case and having at least one LED disposed on one side of the LED, the upper surface or the reflective surface; An initial value of a voltage to be transmitted to the LED and a light amount initial value of the LED light source transferred to the photodiode are measured to measure a light amount of the LED light source, And a control unit for controlling the voltage to be supplied to the LED to be equal to the initial value of the light amount while raising or lowering the voltage to be transmitted to the LED when the light amount of the LED light source received is decreased or increased.

The collimator lens assembly may further include a diffuser made of plastic or silicon between the light source unit and the first collimator lens to diffuse the light source of the LED.

The collimator lens assembly may further include a height adjusting member such that the light source unit is adjusted to a predetermined height on a bottom surface of the reflective case.

The collimator lens assembly may further include a concave lens between the first collimator lens and the light source unit so as to diffuse the light source of the LED at a predetermined angle.

The collimator lens assembly further includes a second collimator lens in one direction of the first collimator lens so as to improve the straightness of the LED light source passing through the first collimator lens, The mate lens may be formed to be larger than the radius of curvature of the first collimator lens.

The collimator lens assembly may include a collimator lens assembly having one side mounted on a side surface of the second collimator lens and the other side mounted on an outer circumferential surface of the reflective case so as to control parallelism of the LED light source passing through the second collimator lens, And a moving member for moving the 2 collimator lens toward one side or the other side.

The collimator lens assembly may be formed on the reflection surface on which the photodiode is mounted so as to protrude at a predetermined inclination angle so as to face the LED in parallel with the LED so as to increase the light amount detection rate of the LED light source incident on the photodiode And may further include a seating groove or a seating groove formed at a predetermined inclination angle.

The collimator lens assembly may further include a heat radiating plate on an outer circumferential surface of the reflective case and a ventilation pipe bent in a predetermined angle on a bottom surface of the reflective casing so as to transmit the internal heat of the reflective casing to the outside .

The reflective surface is coated with electroless nickel plating or aluminum plating and the reflective surface is coated with any one of quartz, glass and diamond having a predetermined particle size so that the light source of the LED reflected on the coated reflective surface is irregularly reflected. .

A reflective case having at least one reflective surface formed with an open upper part and an inner peripheral surface with a hollow cylindrical shape inclined at a predetermined angle; A light source mounted within the reflective case and having at least one LED disposed on one side of the LED facing the upper surface or the reflective surface; A first collimator lens formed of a plurality of lenses at a position where the LED of the light source unit is disposed or at a position where the light source of the LED is reflected on the reflection plane; A plurality of concave lenses corresponding to a position of the first collimator lens so as to diffuse the light source of the LED at a predetermined angle; A plurality of lenses formed to be larger than a radius of curvature of the first collimator lens and corresponding to a diameter of the first collimator lens in one direction of the first collimator lens so as to improve the straightness of the LED light source, A second collimator lens to be formed; Wherein the first collimator lens is mounted on a side surface of the second collimator lens and the other end is mounted on an outer circumferential surface of the reflective case to adjust the parallelism of the LED light source passing through the second collimator lens, A moving member that moves in the other direction; An initial value of a voltage to be transmitted to the LED and a light amount initial value of the LED light source transferred to the photodiode are measured to measure a light amount of the LED light source, And a control unit for controlling the voltage to be supplied to the LED to be equal to the initial value of the light amount while raising or lowering the voltage to be transmitted to the LED when the light amount of the LED light source received is decreased or increased.

The collimator lens assembly may be formed on the reflection surface on which the photodiode is mounted so as to protrude at a predetermined inclination angle so as to face the LED in parallel with the LED so as to increase the light amount detection rate of the LED light source incident on the photodiode And may further include a seating groove or a seating groove formed at a predetermined inclination angle.

The collimator lens assembly may further include a plastic or silicon diffuser between the light source and the second collimator lens to diffuse the light emitted from the LED.

The collimator lens assembly may further include a heat radiating plate on an outer circumferential surface of the reflective case and a ventilation pipe bent in a predetermined angle on a bottom surface of the reflective casing so as to transmit the internal heat of the reflective casing to the outside .

The reflective surface is coated with electroless nickel plating or aluminum plating and the reflective surface is coated with any one of quartz, glass and diamond having a predetermined particle size so that the light source of the LED reflected on the coated reflective surface is irregularly reflected. .

The collimator lens assembly may be formed on the reflection surface on which the photodiode is mounted so as to protrude at a predetermined inclination angle so as to face the LED in parallel with the LED so as to increase the light amount detection rate of the LED light source incident on the photodiode And may further include a seating groove or a seating groove formed at a predetermined inclination angle.

The collimator lens assembly according to the embodiment of the present invention has an effect that the light amount of the light irradiated to the reservoir is uniformly irradiated and the focus of the light can be adjusted.

1 is a perspective view illustrating a collimator lens assembly according to a first embodiment of the present invention;
FIG. 2 is an exploded perspective view of the collimator lens assembly shown in FIG. 1 in an exploded state; FIG.
3 is a cross-sectional view showing a cross section of the collimator lens assembly shown in Fig.
4 is a perspective view illustrating a collimating lens assembly according to a second embodiment of the present invention;
Fig. 5 is an exploded perspective view of the collimator lens assembly shown in Fig. 4 in an exploded state; Fig.
6 is a cross-sectional view showing a cross section of the collimator lens assembly shown in FIG. 4;

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various transformations can be applied and various embodiments can be made. It is to be understood that the following description covers all changes, equivalents, and alternatives falling within the spirit and scope of the present invention.

In the following description, the terms first, second, and the like are used to describe various components and are not limited to their own meaning, and are used only for the purpose of distinguishing one component from another component.

Like reference numerals used throughout the specification denote like elements.

As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms " comprising, "" comprising, "or" having ", and the like are intended to designate the presence of stated features, integers, And should not be construed to preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating a collimator lens assembly according to a first embodiment of the present invention, FIG. 2 is an exploded perspective view of the collimator lens assembly shown in FIG. 1, Sectional view showing a cross-section of the collimator lens assembly.

1 to 3, the collimator lens assembly 1 includes a reflective case 10, a first collimator lens 20, a second collimator lens 30, a diffuser 40, a concave lens 50 A moving member 60, a light source unit 70, a photodiode 80, and a control unit (not shown).

The reflective case 10 may be formed in a cylindrical shape having a flat bottom surface. At least one reflecting surface 11 may be formed while the inner circumferential surface of the reflecting case 10 is inclined at a predetermined angle.

The reflective surface 11 can reflect the amount of the LED light source, which will be described later, in the direction of the first collimator lens 20. The reflecting surface 11 may be coated with electroless nickel plating or aluminum plating. The reflecting surface 11 may be formed by attaching any one of quartz, glass and diamond having a predetermined particle size to the reflecting surface 11 so that the LED light source reflected on the coated reflecting surface is irregularly reflected.

The reflective case 10 may have a heat dissipating plate formed on the outer circumferential surface thereof so as to transmit the internal heat to the outside. The reflective case 10 may be formed with a ventilation pipe 110 having a bent shape at a predetermined angle on the bottom surface so as to discharge the internal heat to the outside.

The reflective case 10 includes a seating projection 90 or a seating groove 100 to increase the light detection rate of the LED light source incident on the photodiode 80 on the reflective surface 11 to which the photodiode 80 is attached can do.

The seating projections 90 or the seating grooves 100 may be formed at a predetermined inclination angle on the reflecting surface 11 so as to face the LEDs so as to increase the light amount detection rate of the LED light sources.

The first collimator lens 20 is a lens whose surface is an aspheric lens, which converts the LED light source into parallel light. The first collimator lens 20 can be mounted on the upper inner circumferential surface of the reflective case 10.

The second collimator lens 30 can improve the linearity of the LED light source passing through the first collimator lens 20. [ The second collimator lens 30 may be disposed in the upper direction of the first collimator lens 20. The second collimator lens 30 may be mounted on the inner circumferential surface of the reflective case 10. The second collimator lens 30 is an aspherical lens, and may be formed larger than the radius of curvature of the first collimator lens 20.

Accordingly, as shown in FIG. 3, there is an effect that the LED light source diffused while passing through the first collimator lens 20 can be collected more.

The diffuser 40 can diffuse the LED light source. The diffuser 40 may be formed between the light source unit 70 and the first collimator lens 20. The diffuser 40 may be formed of plastic or silicon.

Here, the diffuser 40 may be removed to increase the intensity of the LED light source.

The concave lens 50 can diffuse the LED light source at a predetermined angle. The concave lens 50 can be mounted between the first collimator lens 20 and the diffuser 40. [

One end of the extending cylinder 60 is mounted on the side surface of the second collimator lens 30 and the other end is mounted on the outer circumferential surface of the reflecting case 10 so that the second collimator lens 30 is fixed to one side or the other side Direction.

Accordingly, the parallelism or focus of the LED light source passing through the second collimator lens 30 can be adjusted.

The light source unit 70 can transmit the light source of the LED to the reflection surface 11. The light source part 70 may be arranged such that the LED faces the reflecting surface 11 in a square pillar-shaped body.

Here, the LEDs L may be disposed on the upper surface of the body M and the side surface of the body M, as shown in Fig. 2, and may further be disposed between the sides of the body M have.

The photodiode 80 is a sensor capable of measuring the light amount of the LED light source. The photodiode 80 may be disposed on the reflective surface 11 or may be disposed on the seating protrusion 90 or the seating groove 100 formed to protrude from the surface of the reflective surface 11.

Accordingly, the light amount detection rate of the LED light source incident on the photodiode 80 can be increased, while the light amount of the LED light source incident on the photodiode 80 is not partially reflected by the incident angle.

The control unit (not shown) may receive the initial value of the voltage transmitted to the LED and the initial value of the light amount of the LED light source transmitted to the photodiode 80. The control unit (not shown) may control the light amount of the LED light source to be equal to the initial value of the light amount when the light amount of the LED light source transmitted to the photodiode 80 becomes lower or higher than the light amount initial value. The control unit (not shown) may be incorporated in the light source unit 70 or disposed on the outer circumferential surface of the reflection case 10.

FIG. 4 is a perspective view illustrating a collimating lens assembly according to a second embodiment of the present invention, FIG. 5 is an exploded perspective view of the collimating lens assembly shown in FIG. 4, Sectional view showing a cross-section of the collimator lens assembly.

The collimator lens assembly according to the second embodiment of the present invention shown in Figs. 4 to 6 is different from the collimator lens assembly of Figs. 1 to 3 in that the first collimator lens, the second collimator lens, The same reference numerals are used for the same elements. Therefore, the same reference numerals are given to the same constituent elements, and redundant description of the same constituent elements will be omitted, and the added constituent elements will be mainly described.

4 to 6, a collimator lens assembly 2 according to a second embodiment of the present invention includes a reflective case 10, a first collimator lens 20, a second collimator lens 30, A diffuser 40, a concave lens 50, a moving member 60, a light source unit 70, a photodiode 80, and a control unit (not shown).

The reflective case 10, the diffuser 40, the moving member 60, the light source unit 70, the photodiode 80, and the control unit (not shown) are the same as those in FIG.

Specifically, since the first collimator lens 20 is constituted by a plurality of lenses, the linearity and coherency of the LED light source can be enhanced. 5 and 6, the first collimator lens 20 includes an A collimator lens A, a B collimator lens B, a C collimator lens C, and a D collimator lens D ).

The A collimator lens A may be disposed at the center of the reflection case 10 in which the light source unit 70 is disposed. The outer circumferential surface of the A collimator lens A can be fixed while being adhered to the inner circumferential surface of the B collimate lens B. [ The A collimator lens A may be formed in a disc shape corresponding to the length of A ', as shown in Fig.

The B collimator lens B may be formed in a ring shape corresponding to the length of B 'while being adhered to the outer circumferential surface of the A collimator lens A. [

The C collimator lens C may be formed in a ring shape corresponding to the length of C 'while being adhered to the outer circumferential surface of the B collimator lens B.

The D collimator lens D may be formed in a ring shape corresponding to the length D 'while being adhered to the outer circumferential surface of the C collimator lens C. The D collimator lens D can be fixed to the inner circumferential surface of the reflection case 10.

Here, the A collimate lens (A), the B collimate lens (B), the C collimator lens (C) and the D collimate lens (D) The second collimator lens 30 or the concave lens 30, which will be described later, has a small radius of curvature, so that the LED light source is reflected by the reflection surface 11 at a predetermined angle, (50) can also reduce the difference in light source amount.

The second collimator lens 30 is formed to have a larger radius of curvature than that of the plurality of lenses and the first collimator lens 20 to thereby enhance the straightness of the LED light source passing through the first collimator lens 20 There is an effect. 5 and 6, the second collimator lens 30 includes an E collimator lens E, an F collimate lens F, a G collimate lens G, and an H collimate lens H ).

The E collimator lens E may be disposed at the center of the reflective case 10 in which the light source unit 70 is disposed. The outer peripheral surface of the E collimator lens E can be fixed while being adhered to the inner peripheral surface of the F collimate lens F. [ The E collimator lens E may be formed in a disc shape corresponding to the length of A 'as shown in Fig.

The F collimator lens F may be formed in a ring shape corresponding to the length of B 'while being adhered to the outer peripheral surface of the E collimator lens E.

The G collimator lens G may be formed in a ring shape corresponding to the length of C while being adhered to the outer peripheral surface of the F collimate lens F. [

The H collimate lens H may be formed in a ring shape corresponding to the length of D 'while being adhered to the outer circumferential surface of the G collimate lens G. [

As shown in Figs. 5 and 6, the concave lens 50 is composed of I first concave lens I, J second concave lens J, K third concave lens K, L fourth concave lens (L) L).

The first concave lens (I) is a lens formed in a shape corresponding to the diameter of the A collimator lens (A). The first concave lens I can be formed at the position of the A collimator lens A. [

And the second concave lens J is a lens formed at the position of the B collimator lens B. J second concave lens J can be fixed while being adhered to the outer peripheral surface of the first concave lens I.

And the third Kth concave lens K is a lens formed at the position of the C collimator lens C. [ The K third concave lens K can be fixed while being adhered to the outer circumferential surface of the second concave lens J.

L fourth concave lens L is a lens formed at the position of the D collimate lens D. L fourth concave lens L can be fixed while being adhered to the outer peripheral surface of the K third concave lens K. [ L fourth concave lens L may be fixed to the inner circumferential surface of the reflective case 10.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be clear to the person.

1: collimator lens assembly
10: reflective case
11: Reflective surface
20: first collimator lens
30: Second collimate lens
40: Diffuser
50: concave lens
60: movable member
70:
80: Photodiode
90:
100: seat groove
110: vent pipe

Claims (9)

A reflective case in which at least one reflective surface whose upper direction is open and whose inner circumferential surface in a hollow cylindrical shape is inclined at a predetermined angle is formed and a first collimator lens is mounted in the opened upper direction;
A light source mounted within the reflective case and having at least one LED disposed on one side of the LED, the upper surface or the reflective surface;
A photodiode mounted on the reflecting surface to measure an amount of light of the LED light source,
An initial value of a voltage to be transmitted to the LED, and an initial value of a light amount of the LED light source transferred to the photodiode, and a voltage to be transmitted to the LED when the light amount of the LED light source transmitted to the photodiode is reduced or increased, And controlling the light amount to be equal to the initial value of the light amount while controlling the light amount,
A mounting projection formed to protrude at a predetermined inclination angle so as to be opposed to the LED in parallel with the LED on the reflective surface to which the photodiode is attached, or a mounting projection projected at a predetermined inclination angle so as to increase the light amount detection rate of the LED light source incident on the photodiode, Further comprising a seating groove. The method according to claim 1,
Further comprising a plastic or silicon diffuser disposed between the light source portion and the first collimator lens to diffuse the light source of the LED. 3. The method of claim 2,
Further comprising a concave lens disposed between the first collimator lens and the diffuser to diffuse the light source of the LED at a predetermined angle. The method according to claim 1,
Further comprising a second collimator lens in one direction of the first collimator lens so as to improve the straightness of the LED light source passed through the first collimator lens,
Wherein the second collimator lens is formed to be larger than a radius of curvature of the first collimator lens. 5. The method of claim 4,
One side of the second collimator lens is mounted on the side surface of the second collimator lens and the other side thereof is mounted on the outer surface of the reflection case so as to adjust the parallelism of the LED light source passing through the second collimator lens, Lt; RTI ID = 0.0 > direction. ≪ / RTI > delete A reflective case in which at least one reflective surface whose upper direction is open and whose inner circumferential surface in a hollow cylindrical shape is inclined at a predetermined angle is formed and a first collimator lens is mounted in the opened upper direction;
A light source mounted within the reflective case and having at least one LED disposed on one side of the LED, the upper surface or the reflective surface;
A photodiode mounted on the reflecting surface to measure an amount of light of the LED light source,
An initial value of a voltage to be transmitted to the LED, and an initial value of a light amount of the LED light source transferred to the photodiode, and a voltage to be transmitted to the LED when the light amount of the LED light source transmitted to the photodiode is reduced or increased, And controlling the light amount to be equal to the initial value of the light amount while controlling the light amount,
The reflection surface is coated with electroless nickel plating or aluminum plating, and any one of quartz, glass and diamond having a predetermined particle size is attached to the reflection surface so that the light source of the LED reflected on the coated reflection surface is irregularly reflected And the collimator lens assembly. A reflective case in which at least one reflective surface is formed in which an upper direction is opened and an inner peripheral surface of a hollow cylindrical shape is inclined at a predetermined angle;
A light source mounted within the reflective case and having at least one LED disposed on one side of the LED facing the upper surface or the reflective surface;
A first collimator lens formed of a plurality of lenses at a position where the LED of the light source unit is disposed or at a position where the light source of the LED is reflected on the reflection plane;
A plurality of concave lenses corresponding to a position of the first collimator lens so as to diffuse the light source of the LED at a predetermined angle;
And a plurality of lenses formed to be larger than a radius of curvature of the first collimator lens and corresponding to a diameter of the first collimator lens in one direction of the first collimator lens so as to improve the straightness of the LED light source, A second collimator lens to be formed;
Wherein the first collimator lens is mounted on a side surface of the second collimator lens and the other end is mounted on an outer circumferential surface of the reflective case to adjust the parallelism of the LED light source passing through the second collimator lens, A moving member that moves in the other direction;
A photodiode mounted on the reflecting surface to measure an amount of light of the LED light source,
An initial value of a voltage to be transmitted to the LED, and an initial value of a light amount of the LED light source transferred to the photodiode, and a voltage to be transmitted to the LED when the light amount of the LED light source transmitted to the photodiode is reduced or increased, And controlling the light amount to be equal to the initial value of the light amount while controlling the light amount,
A mounting projection formed to protrude at a predetermined inclination angle so as to be opposed to the LED in parallel with the LED on the reflective surface to which the photodiode is attached, or a mounting projection projected at a predetermined inclination angle so as to increase the light amount detection rate of the LED light source incident on the photodiode, Further comprising a seating groove. delete
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JP2014524119A (en) * 2011-07-13 2014-09-18 ドロス セオドラ ディ．アー．グラス Method and apparatus for obtaining a uniform electromagnetic radiation beam having an arbitrary geometric shape

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Publication number Priority date Publication date Assignee Title
JP2014524119A (en) * 2011-07-13 2014-09-18 ドロス セオドラ ディ．アー．グラス Method and apparatus for obtaining a uniform electromagnetic radiation beam having an arbitrary geometric shape

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