CN102691892A

CN102691892A - LED illumination light source

Info

Publication number: CN102691892A
Application number: CN2011100697411A
Authority: CN
Inventors: 李姝江
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-22
Filing date: 2011-03-22
Publication date: 2012-09-26

Abstract

The invention relates to an LED illumination light source comprising a LED light-emitting array, a colour temperature compensator, an optical light-equalizing mirror, a light gathering device, a light gathering cover, a light after gathering and a target light spot. The LED illumination light source is an LED novel light source that allows colour temperature to be adjustable and can be organically combined with the light gathering device. The a light beam that has been optically processed forms a uniform and clear rectangular light spot with a fixed size at a predetermined target place in front of the light gathering device. The size, the light uniformity and the sharpness of the rectangular light spot can be adjusted through adjusting a focal length among the light gathering device, the optical light-equalizing mirror and the LED light-emitting array.

Description

A kind of LED lighting source

Technical field

The present invention relates to the lighting engineering of a kind of LED, refer specifically to a kind of LED lighting source that is used for the floodlighting of vehicle, building, stage, square, road, distance light field and captured position or object is carried out when taking pictures light compensation.

Background technology

We belong to a brand-new led light source illumination application field at present with regard to using by road vehicle monitoring, illumination field, and the generation of road vehicle monitoring mainly is owing to present stage China's rapid economic development; Transportation is flourishing; The town and country vehicle is how much multiplying powers growths every year, causes road congested, the vehicle that add indivedual no sort runs, does not go in accordance with road traffic regulation; Increased burden for the road that can't bear to bear a heavy burden, also proposed new problem to control of traffic and road.The road vehicle monitoring is attempted carrying out under such background.What the road vehicle monitoring was mainly adopted is the method that video camera is taken pictures and recorded a video, and for the vehicle violating the regulations that goes not according to traffic rules, carries out real-time candid photograph and video recording, as a kind of technological supplementary means of implementing administrative penalty.The video camera that requirement moves round the clock owing to take pictures or record a video must be regardless of daytime and can both normally take pictures and record a video night; For vehicle the secondary light source of supporting shooting clear photo and image must be arranged in travels down, but by day, the equal operate as normal of video camera under the natural situation such as evening, wet weather, dense fog, backlight.Conclude the light source that gets up to have two kinds of different installation and be used to the road monitoring illumination: a kind of is the hernia flash lamp; It belongs to low power pulsed light source, and guide number is less, can not be installed in apart from the far position of irradiated object; Usually the position that is installed in video camera the place ahead 10-15 rice can reach the brightness needs of video camera lighting source; And be merely able to take apart from the in-plant vehicle of flash lamp, the local pictures of perhaps taking vehicle can not reflect the overall picture of vehicles peccancy fully; If draw back the distance with video camera, its very little guide number just can't satisfy the illumination light needs of shooting; Another kind is exactly the LED flood light lamp, and this light fixture was used for the building floodlighting originally, and its power can be done greatlyyer, can be installed on the same position with video camera.Yet, be used for the road monitoring illumination and just some difficulties and problem occurred, mainly show the glare problem of LED floodlight; Can have a strong impact on and disturb the sight line of human pilot in some track; Be unfavorable for safety traffic, the object that secondly is exactly the video camera shooting is beyond tens meters, and the light of LED floodlight can't project on the photographic subjects of video camera accurately; Cause the image fog of shooting unclear, do not reach the shooting effect of expection.If closely install, receive the restriction of factors such as road, environment, geographical position, project installation cost and vehicle ' again, this kind mode then can not be used.

In view of above situation, invent a kind of LED lighting source that can give light compensation to taking pictures, satisfy the traffic administration needs of reality, have crucial meaning.

Summary of the invention:

In order to solve the existing deficiency that is used for the road monitoring lighting source, a kind of technological deficiency of lighting in other words conj.or perhaps, the present invention has made following technical solution.

The present invention by LED light emitting array, color temperature compensating device, the equal light microscopic of optics, light aggregator, light converge cover, the light after converging, target ground hot spot forms, wherein the light aggregator is made up of optical flat mirror, Fresnel Lenses, optical male lens and optics concavees lens.Be a kind of emerging light source of LED of adjustable color temperature and the method that the light aggregator organically combines; The light beam of crossing through optical treatment forms evenly at the predeterminated target place in light aggregator the place ahead, the rectangular light spot of fixed size clearly; Utilize LED to shine the illuminating source of formula according to formula or back as preceding; Place on the focus of optical system of light aggregator assembly; Through the light along continuous straight runs direct projection forward of optical lens, the light behind the transmitted light aggregator has just become rectangular light beam at this moment, projects on the position that needs irradiation or on the object converging later rectangular light beam; The size of its rectangular light spot, the uniformity of light, definition then can be adjusted through the focal length between adjustment light aggregator, the equal light microscopic of optics and the LED light emitting array.

The LED lighting source is the method that a kind of emerging light source and optical light beam organically combine, and after converging, throws away the light beam of limited resources, can shine according to predetermined direction.

Heat dissipation technology of the present invention is to be that a kind of LED heat dissipation technology method of 2010102295076 is the basis with the patent No., and product is dispelled the heat in real time.

Beneficial effect of the present invention has been to solve the application problem of road monitoring lighting source; The illumination that has realized reference object reaches that illumination is even, hot spot is clear, spot size is adjustable; Can not produce the effect of dazzle, solve the glare problem of serious interference way road vehicles driver normal driving when driving simultaneously yet.

Description of drawings:

Below in conjunction with accompanying drawing the present invention is further described.

Like Fig. 1 is the fundamental diagram of patent of the present invention.

The specific embodiment:

The present invention by the equal light microscopic of LED light emitting array 2, color temperature compensating unit 3, optics 4, light aggregator 5, light converge cover 6, light 7, target ground hot spot 8 after converging form; Light aggregator (refer to: monomers such as convex lens, concavees lens, Fresnel Lenses, optical flat mirror are the optical system of combination use perhaps) and optical reflector form 7; Utilize LED light emitting array 1, color temperature compensating unit 2, shine the illuminating source of formula according to formula or back as preceding; Place on the focus of optical light line aggregator; Light direct projection forwards through optical light line aggregator; Become rectangular light beam behind the light process light aggregator; (refer to: the optical system that monomers such as convex lens, concavees lens, Fresnel Lenses or combination are used) project the rectangular light beam that produces converging after on the position that needs shine or on the object by optical light line aggregator again; Since position or the object that will take enough illumination has been arranged, at this moment video camera and camera just can photograph the ten minutes clear photograph and the video recording of this position and object.

Claims

1. LED lighting source; By LED light emitting array, color temperature compensating device, the equal light microscopic of optics, light aggregator, light converge cover, the light after converging, target ground hot spot forms; It is characterized in that the light aggregator is made up of optical flat mirror, Fresnel Lenses, optical male lens and optics concavees lens, is a kind of emerging light source of LED of adjustable color temperature and the method that the light aggregator organically combines.

2. by the described a kind of LED lighting source of claim 1, it is characterized in that through the light beam that optical treatment is crossed form evenly at the predeterminated target place in light aggregator the place ahead, the rectangular light spot of fixed size clearly.

3. by the described a kind of LED lighting source of claim 1, it is characterized in that utilizing LED as preceding according to formula or back illuminating source according to formula, place on the focus of optical system of light aggregator assembly.

4. by the described a kind of LEDLED lighting source of claim 2, it is characterized in that size, the uniformity of light, the definition of rectangular light spot, then can adjust through the focal length between adjustment light aggregator, the equal light microscopic of optics and the LED light emitting array.