CN201731285U

CN201731285U - Ultra-uniform light spot LED lamp

Info

Publication number: CN201731285U
Application number: CN2009201711448U
Authority: CN
Inventors: 闫志刚; 张瑞平
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-20
Filing date: 2009-08-20
Publication date: 2011-02-02
Anticipated expiration: 2019-08-20

Abstract

The utility model discloses an ultra-uniform light spot LED lamp, mainly comprising an LED light source (1), a small convex lens (2) with short focal length, an adjustable diaphragm (3) and a large convex lens (4) with long focal length. The ultra-uniform light spot LED lamp is characterized in that the focal lengths of the small convex lens (2) with short focal length and the large convex lens (4) with long focal length are special parameters; and the distances between the LED light source (1), the convexes (2 and 4) and the adjustable diaphragm (4) are specially set. The ultra-uniform light spot LED lamp has simple and exquisite structure, can realize the output of ultra-uniform light spots of an LED spot light source, and also can realize the adjustment of the sizes of output light spots under the condition of not changing the luminance; and the ultra-uniform light spot LED lamp can be widely applied to occasions with higher lighting requirements, such as medical treatment, photographing, archeology, appraisal and the like.

Description

Super even hot spot LED lamp

Technical field

The utility model relates to lighting field, specifically is a kind of LED lamp of super even hot spot.

Background technology

When generally needing assist illuminator, usually used illuminations all is that colour temperature is that the common bulb of 3000K to 4500K is made light source, adopt the prefocus cup form, output facula is special bright in the middle of being, the outside effect of deepening gradually, because colour temperature is on the low side, the scenery of seeing is fully different down with daylight, colour rendering is poor, simultaneously, because the center spotlight effect of light fixture makes to produce huge vision deviation because of the intensity of illumination difference when observing small items, such light fixture is in medical treatment, photography, identify, archaeologies etc. than higher special trade or important events, can not satisfy the lighting requirement of use to lighting requirement far away.

The utility model content

The purpose of this utility model just provides a kind of novel super even hot spot LED lamp, has led light source near the 5500K colour temperature of daylight, and in conjunction with two convex lens of special design and an adjustable diaphragm composition, can realize the light that the LED spot light sends, behind the little convex lens of short focal length, adjustable diaphragm, the big convex lens of long-focus, output brightness super even light beam, and the diameter of output beam can adjust size by adjustable diaphragm, can supply special trade or important events that the illumination service is provided.

The purpose of this utility model is to be achieved through the following technical solutions: a kind of super even hot spot LED lamp, mainly comprise: led light source 1, the little convex lens 2 of short focal length, adjustable diaphragm 3, the big convex lens 4 of long-focus are formed, it is characterized in that: the central point of four devices point-blank, the little convex lens 2 of short focal length are placed on the dead ahead of led light source 1, and the distance of distance L ED light source 1 equals the focal length of little convex lens; The big convex lens 4 of long-focus are placed on the dead ahead of led light source 1, and the distance of the little convex lens 2 of the short focal length of distance equals the focal length of the big convex lens 4 of long-focus.

The utility model also can be done and improve:

Adjustable diaphragm 3 is placed between little convex lens 2 of short focal length and the big convex lens 4 of long-focus, is sidelong near one of the little convex lens 2 of short focal length as far as possible and puts;

Led light source 1 adopts 5500K colour temperature LED near daylight as light source, and colour rendering is best;

For guaranteeing the output facula quality, the central point of led light source 1, the little convex lens 2 of short focal length, adjustable diaphragm 3,4 four devices of the big convex lens of long-focus must be point-blank;

Adjustable diaphragm has the screw rod that can stir, by stirring screw rod, can realize aperture of the diaphragm size, reaches the purpose of regulating the output facula size.

The utility model advantage is: the LED lamp that a kind of super even hot spot simple in structure is provided, this device light source colour source is near daylight 5500K, simple in structure, volume is little, cost is low, output facula brightness is very even, can satisfy the illumination needs of special trades such as medical treatment, photography, archaeology, evaluation and special occasions fully.

Description of drawings

With embodiment the utility model is described in further detail with reference to the accompanying drawings below.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 A is the hot spot design sketch of the utility model output

Fig. 2 B is the hot spot design sketch of ordinary lamp and lantern output

1, led light source, 2, the little convex lens of short focal length, 3, adjustable diaphragm, 4, the big convex lens of long-focus.

The specific embodiment

As shown in Figure 1, super even hot spot LED lamp of the present utility model, led light source 1 is installed on the little convex lens of short focal length 2 left sides, the distance L 1 of the little convex lens 2 of the short focal length of distance equals the focal distance f 1 of the little convex lens of short focal length, the big convex lens 4 of long-focus are installed in the rightmost side, the distance L 2 of the little convex lens 2 of the big convex lens short focal length of 4 distances of long-focus equals the focal distance f 2 of the big convex lens 4 of long-focus, and adjustable diaphragm is installed near the little convex lens 2 of short focal length between two lens as far as possible.

The little convex lens 2 of short focal length with respect to selecting biconvex lens for use, can obtain more uniform hot spot output effect as selecting planoconvex spotlight for use.

The shape of output facula depends on the interior hole shape of diaphragm.

Claims

1. super even hot spot LED lamp, mainly comprise: led light source (1), the short little convex lens of focal length (2), adjustable diaphragm (3), the big convex lens of long-focus (4) are formed, it is characterized in that: the focal length of short little convex lens of focal length (2) and the big convex lens of long-focus (4) is a special parameter, and the distance between led light source (1), convex lens (2,4) and adjustable diaphragm (3) is specific installation.

2. super even hot spot LED lamp according to claim 1 is characterized in that: led light source (1) adopts 5500K colour temperature LED near daylight as light source.

3. super even hot spot LED lamp according to claim 1 and 2 is characterized in that: the short little convex lens of focal length (2) are placed on the dead ahead of led light source (1), and the distance of distance L ED light source (1) equals the focal length of little convex lens.

4. super even hot spot LED lamp according to claim 1 and 2 is characterized in that: big convex lens (4) are placed on the dead ahead of led light source (1), and the distance of the short little convex lens of focal length of distance (2) equals the focal length of the big convex lens of long-focus (4).

5. super even hot spot LED lamp according to claim 3 is characterized in that: big convex lens (4) are placed on the dead ahead of led light source (1), and the distance of the short little convex lens of focal length of distance (2) equals the focal length of the big convex lens of long-focus (4).

6. according to claim 1 or 2 or 5 described super even hot spot LED lamps, it is characterized in that: adjustable diaphragm (3) is placed between little convex lens of short focal length (2) and the big convex lens of long-focus (4), places near the short little convex lens of focal length (2) as far as possible.

7. super even hot spot LED lamp according to claim 4 is characterized in that: adjustable diaphragm (3) is placed between little convex lens of short focal length (2) and the big convex lens of long-focus (4), places near the short little convex lens of focal length (2) as far as possible.

8. according to claim 1 or 2 or 5 or 7 described super even hot spot LED lamps, it is characterized in that: the central point of led light source (1), the short little convex lens of focal length (2), adjustable diaphragm (3), (4) four devices of the big convex lens of long-focus must be point-blank.

9. super even hot spot LED lamp according to claim 6 is characterized in that: the central point of led light source (1), the short little convex lens of focal length (2), adjustable diaphragm (3), (4) four devices of the big convex lens of long-focus must be point-blank.