CN211478754U

CN211478754U - Shadowless LED microscope base light source

Info

Publication number: CN211478754U
Application number: CN202020362999.5U
Authority: CN
Inventors: 张斌; 杨崇贵
Original assignee: Guilin Microtech Optical Instrument Co ltd
Current assignee: Guilin Microtech Optical Instrument Co ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-09-11
Anticipated expiration: 2030-03-20

Abstract

The utility model discloses a shadowless LED microscope base light source, which belongs to the technical field of microscopes, and comprises a lamp shell arranged in a lamp hole of a microscope base, wherein an annular lamp strip is arranged on the inner wall of the lamp shell along the inner wall of the lamp shell, the lamp strip comprises a plurality of patch LED lamps which are arranged at intervals and radially emit light rays, a transparent light guide plate is arranged in a space surrounded by the patch LED lamps, a transmission plate with frosted surfaces on two surfaces is arranged on the light guide plate, and an opaque high-reflection sheet is arranged below the light guide plate; the lamp belt is circular; the lamp strip further comprises a circular substrate, and the SMD LED lamps are arranged on the inner wall of the substrate at intervals. The utility model discloses thereby can solve the light ratio that current microscope base light source exists and concentrate the problem of the definition when having influenced microscope to observe the object.

Description

Shadowless LED microscope base light source

Technical Field

The utility model belongs to the technical field of microscope technique and specifically relates to a LED shadowless light source for microscope.

Background

The light source in the microscope is a device for illuminating the visual field of the microscope, and the unreasonable arrangement of the light source often generates stray light which interferes with an imaging system, so that the imaging is seriously influenced. The existing microscope base light source generally adopts a method that a fluorescent lamp, a rice bubble halogen lamp and the like are arranged in a base lamp hole of a microscope, or a plurality of LED lamps are arranged on the surface of a microscope base, so that the following problems exist in practical application: 1) the light rays of the fluorescent lamp and the bulb halogen lamp are concentrated when being transmitted out of the objective table above the lamp hole of the base, so that the bright shadow of the light spot can be easily seen when the object is observed by a microscope, and the definition of the microscope for observing the object is influenced; 2) it is necessary to manufacture a large block lens for dispersing and eliminating the bright image of the light spot, which not only requires high manufacturing cost, but also requires high technical requirements.

SUMMERY OF THE UTILITY MODEL

The utility model provides a shadowless LED microscope base light source, the light ratio that current microscope base light source exists can be solved to this kind of microscope base light source is concentrated to the problem of the definition when having influenced the microscope and having observed the object.

In order to solve the above problem, the utility model discloses the technical scheme who adopts is: the shadowless LED microscope base light source comprises a lamp shell arranged in a lamp hole of a microscope base, wherein an annular lamp strip is arranged on the inner wall of the lamp shell along the inner edge of the lamp shell, the lamp strip comprises a plurality of patch LED lamps which are arranged at intervals and radially emit light rays, a transparent light guide plate is arranged in a space surrounded by the patch LED lamps, a transmission plate with frosted surfaces on two surfaces is arranged on the light guide plate, and an opaque high-reflectivity sheet is arranged below the light guide plate.

In the above technical solution, a more specific technical solution may also be: the lamp belt is circular; the lamp strip further comprises a circular substrate, and the SMD LED lamps are arranged on the inner wall of the substrate at intervals.

Further: the light guide plate and the transmission plate are both made of acrylic materials, and the substrate is made of aluminum materials.

Further: the top of the lamp shell is provided with an outward extending mounting positioning ring and an inward extending transmission plate positioning ring, and the transmission plate is mounted between the light guide plate and the transmission plate positioning ring.

Further: the bottom of the lamp shell is provided with a bottom cover, a light guide plate seat plate is arranged between the light guide plate and the bottom cover, and the high-reflection sheet is located between the light guide plate and the light guide plate seat plate.

Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:

1. because the lamp band is arranged in the lamp shell of the microscope base light source along the inner wall of the lamp shell and comprises a plurality of patch LED lamps which are arranged at intervals and the light rays of which are radially emitted, a transparent light guide plate is arranged in the space surrounded by the patch LED lamps, a transmission plate with two frosted surfaces is arranged on the light guide plate, and an opaque high reflector is arranged below the light guide plate; the lamp belt is annular, light rays of the paster LED lamps arranged at intervals are radially emitted, light is uniformly projected onto the bottom surface of the objective table under the diffuse reflection action of the light guide plate coaxially mounted with the lamp belt, the uniform action of the transmission plate and the reflection action of the high reflector, the light emitted from the objective table is in a shadowless state, and meanwhile the high reflector reduces the reduction of the brightness, so that the object observation definition of the microscope is ensured.

2. Because the lamp area is the ring shape, the interval range of paster LED lamp is on the inner wall of the annular base plate, has further improved the homogeneity of light source.

3. Because the light guide plate and the transmission plate are both made of acrylic materials, the acrylic materials are easy to process and low in price, and the effects that the technical requirements are easy to achieve and the manufacturing cost is low are achieved on the premise that the diffuse reflection effect of the light guide plate and the uniform effect of the transmission plate are guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

3 fig. 3 2 3 is 3 a 3 sectional 3 view 3 a 3- 3 a 3 of 3 fig. 3 1 3. 3

Fig. 3 is a schematic view of the embodiment of the present invention mounted on a microscope base.

Detailed Description

The invention will be described in more detail with reference to the following embodiments:

the shadowless LED microscope base light source shown in fig. 1 and 2 comprises a cylindrical lamp housing 1 arranged in a lamp hole of a microscope base, wherein a circular lamp strip 2 is arranged in the lamp housing 1 along the inner wall of the lamp housing 1, the lamp strip 2 comprises a circular substrate 21 and a plurality of patch LED lamps 22, the patch LED lamps 22 are arranged on the inner wall of the circular substrate 21 at intervals, a light guide plate 3 is arranged in a space surrounded by the patch LED lamps 22, and light rays of the patch LED lamps 22 are radially emitted and pass through the light guide plate 3; the substrate 21 is made of an aluminum material; the light guide plate 3 is made of an acrylic material; the top of the lamp shell 1 is provided with a mounting positioning ring 11 extending radially outwards and a transmission plate positioning ring 12 extending radially inwards, the light guide plate 3 is provided with a transmission plate 4, the transmission plate 4 is mounted between the light guide plate 3 and the transmission plate positioning ring 12, the transmission plate 4 is made of an acrylic material, and the upper surface and the lower surface of the transmission plate 4 are both uniform frosted surfaces; the bottom of the lamp shell 1 is provided with a bottom cover 7, a light guide plate seat plate 6 is arranged between the light guide plate 3 and the bottom cover 7, and the high-reflection sheet 5 is positioned between the light guide plate 3 and the light guide plate seat plate 6.

As shown in fig. 3, the shadowless LED microscope base light source is placed in a lamp hole K of the microscope base 9 during installation.

The lamp belt of the utility model is circular, the light rays of the paster LED lamps arranged at intervals are radially emitted, the light is uniformly projected on the bottom surface of the objective table under the diffuse reflection action of the light guide plate coaxially mounted with the lamp belt, the uniform action of the transmission plate and the reflection action of the high reflector, the light emitted from the objective table becomes a shadowless state, and meanwhile, the high reflector reduces the reduction of the brightness, thereby ensuring the definition of the object observation by a microscope; meanwhile, the light guide plate and the transmission plate which are made of the patch LED lamps and the acrylic material which are arranged on the substrate at intervals not only further improve the uniformity of the light source, but also are easy to process and low in price, so that the technical requirements are easy to achieve and the manufacturing cost is low on the premise of ensuring the diffuse reflection effect of the light guide plate and the uniform effect of the transmission plate.

Claims

1. The utility model provides a shadowless LED microscope base light source, is including locating the lamp body in the microscope base lamp hole, its characterized in that: the lamp comprises a lamp body, and is characterized in that an annular lamp belt is arranged on the inner wall of the lamp body, the lamp belt comprises a plurality of patch LED lamps which are arranged at intervals and radially emit light, a transparent light guide plate is arranged in a space surrounded by the patch LED lamps, a transmission plate with two frosted surfaces is arranged on the light guide plate, and an opaque high-reflectivity sheet is arranged below the light guide plate.

2. The shadowless LED microscope base light source of claim 1, wherein: the lamp belt is circular; the lamp strip further comprises a circular substrate, and the SMD LED lamps are arranged on the inner wall of the substrate at intervals.

3. The shadowless LED microscope base light source of claim 2 wherein: the light guide plate and the transmission plate are both made of acrylic materials, and the substrate is made of aluminum materials.

4. The shadowless LED microscope base light source of claim 3, wherein: the top of the lamp shell is provided with an outward extending mounting positioning ring and an inward extending transmission plate positioning ring, and the transmission plate is mounted between the light guide plate and the transmission plate positioning ring.

5. The shadowless LED microscope base light source of claim 4, wherein: the bottom of the lamp shell is provided with a bottom cover, a light guide plate seat plate is arranged between the light guide plate and the bottom cover, and the high-reflection sheet is located between the light guide plate and the light guide plate seat plate.