CN2643335Y

CN2643335Y - Illuminator for microscope

Info

Publication number: CN2643335Y
Application number: CNU032734301U
Authority: CN
Inventors: 杨泽声
Original assignee: Motic China Group Co Ltd
Current assignee: Motic China Group Co Ltd
Priority date: 2003-08-11
Filing date: 2003-08-11
Publication date: 2004-09-22
Anticipated expiration: 2013-08-11

Abstract

The utility model discloses a lighting device for a microscope and consists of a light condenser and an illuminator, wherein the illuminator is composed of a variable light diaphragm, a illuminator lens group, a light source and a base for the illuminator, wherein a holographic scatter plate is arranged under the light condenser and on the light source. The holographic scatter plate is superimposed with the light source, the light condenser and the illuminator lens group in the axles. Because the holographic scatter plate has a high light-transmitting rate and a light-scattering function, the light is displayed very uniformly within the active range under the action of the holographic scatter plate.

Description

Microscopical lighting device

Technical field

The utility model belongs to the microscope field, mainly relates to a kind of microscopical lighting device.

Background technology

In the biological microscope illuminator,, need the area of illumination zone big and require the each point brightness on the lighting area to be consistent though that the low power objective brightness of illumination does not require is too high; Though and high power objective is little but it needs very high brightness to the area requirements of illumination.Microscope illumination should throw light on the very high again brightness of large tracts of land and also the area that thrown light on the brightness of each point want consistent, this is a contradiction that can not solve in the conventional microscope illumination always, in order to reach request for utilization, only require between unanimity and the requirement of illumination high brightness compromise at each point on illumination large tracts of land and the lighting area.So traditional microscope adopts powerful illuminations such as Halogen lamp LED or tungsten lamp and the lower surface frosted of collecting lens last slice lens, the light source utilization factor of this lighting system is very low always, serviceable life is very short.

The utility model content

Fundamental purpose of the present utility model provides the consistent microscopical lighting device of each point brightness on the big and illuminated area of a kind of lighting area.

Secondary objective of the present utility model provides a kind of brightness of illumination height, long microscopical lighting device of life-span.

In order to achieve the above object, the utility model has been taked following solution:

A kind of microscopical lighting device, include condenser, collecting lens, Switching Power Supply, wherein collecting lens is made up of iris, light harvesting lens set, light source, light harvesting microscope base, wherein below the condenser and be positioned at light source above establish a holographic scatter plate, the axle center of holographic scatter plate and light source, condenser, collecting lens lens set axis coinciding.

Described light source is the light emitting diode of high brightness.

Holographic scatter plate is to be positioned at the light harvesting microscope base.

The angle of divergence of holographic scatter plate is 5 ° to 60 °.

Holographic scatter plate can be located between light source and the light harvesting eyeglass.

Holographic scatter plate can be located between the collecting lens lens.

Holographic scatter plate can be located between collecting lens lens and the condenser.

After adopting such scheme, because holographic scatter plate transmittance is high and have certain scattering function, so light is under the effect of holographic scatter plate, and light seems very even in the scope of effect; Because light source can adopt the light emitting diode of super brightness, and then light luminance is enough in visual range, therefore be applicable to low power objective and high power objective in addition, simultaneously because the light emitting diode that adopts is a cold light source, so the life-span of light source is long.

Description of drawings

Fig. 1 is applied to microscopical schematic appearance for the utility model;

Fig. 2 A is the cut-open view of the utility model embodiment 1;

Fig. 2 B is the cut-open view of the utility model embodiment 2;

Fig. 2 C is the cut-open view of the utility model embodiment 3;

Fig. 2 D is the cut-open view of the utility model embodiment 4;

The lighting condition synoptic diagram of Fig. 3 when not adding holographic scatter plate in the utility model;

The lighting condition synoptic diagram of Fig. 4 when having added holographic scatter plate in the utility model.

Embodiment

Below with reference to accompanying drawing embodiment of the present utility model is described.

Shown in Fig. 1,2A, a kind of microscopical lighting device of the utility model, include condenser 1, collecting lens 2, Switching Power Supply 3, wherein collecting lens 2 is made up of iris 31, light harvesting lens set 32, light emitting diode 33, light harvesting microscope base 34, wherein said light emitting diode 33 is arranged at the bottom of microscope light harvesting microscope base 34, in light harvesting microscope base 34, a holographic scatter plate 4 is established in the top that is positioned at light emitting diode 33, and the axle center of light emitting diode 33 and holographic scatter plate 4 and condenser 1, collecting lens lens set 32 axis coincidings.

Light emitting diode 33 is a super brightness, and holographic scatter plate 4 has the high and certain scattering function of transmitance.

The angle of divergence of holographic scatter plate 4 is 5 ° to 60 °.

Shown in Fig. 2 B, holographic scatter plate 4 can be located between light emitting diode 33 and the light harvesting eyeglass 32.

Shown in Fig. 2 C, holographic scatter plate can be located between the collecting lens lens set 32.

Shown in Fig. 2 D, holographic scatter plate can be located between light harvesting eyeglass 32 and the condenser 1.

For result of use of the present utility model is described more easily, lighting condition when not adding holographic scatter plate 4 once at first is described, when not adding holographic scatter plate 4, observe by object lens, eyepiece, can see in the visual field lighting condition as shown in Figure 3, can find out obviously that from Fig. 3 the luminous intensity of each point on the area of required illumination differs too big, the center is brighter, darkness deepens with the radius increasing around the center, promptly causes the field rays brightness irregularities.

When in light path, adding holographic scatter plate 4, holographic scatter plate 4 can be put in the diverse location of condenser below, cooperate shown in Fig. 2 A-Fig. 2 D, though the position difference that holographic scatter plate 4 is placed, under the effect of the high transmission rate of holographic scatter plate 4 and scattering, observe by object lens, eyepiece, can see that the lighting condition in the visual field is very good, as shown in Figure 4, the luminous intensity of each point is of slight difference on the area of required illumination, interior eye is almost imperceptible, promptly reaches the visual field effect of uniform.

Claims

1, a kind of microscopical lighting device, include condenser, collecting lens, wherein collecting lens is made up of iris, light harvesting lens set, light source, light harvesting microscope base, it is characterized in that: below the condenser and be positioned at light source above establish a holographic scatter plate, the axle center of holographic scatter plate and light source, condenser, collecting lens lens set axis coinciding.

2, microscopical lighting device as claimed in claim 1 is characterized in that: described light source is the light emitting diode of high brightness.

3, microscopical lighting device as claimed in claim 1, it is characterized in that: holographic scatter plate is in the light harvesting microscope base.

4, microscopical lighting device as claimed in claim 1 is characterized in that: the holographic scatter plate angle of divergence is 5 ° to 60 °.

5, the microscopical lighting device that reaches according to claim 1 is characterized in that: holographic scatter plate can be located between light source and the light harvesting eyeglass.

6, the microscopical lighting device that reaches according to claim 1 is characterized in that: holographic scatter plate can be located between the light harvesting eyeglass.

7, the microscopical lighting device that reaches according to claim 1 is characterized in that: holographic scatter plate can be located between collecting lens lens and the condenser.