CN209928045U

CN209928045U - Dodging device based on diffuse reflection plate

Info

Publication number: CN209928045U
Application number: CN201920541228.XU
Authority: CN
Inventors: 陈文杰
Original assignee: Shenzhen City Nike Optical Precision Technology Co Ltd
Current assignee: Shenzhen City Nike Optical Precision Technology Co Ltd
Priority date: 2019-04-20
Filing date: 2019-04-20
Publication date: 2020-01-10
Anticipated expiration: 2029-04-20

Abstract

The utility model relates to an optical instrument technical field, in particular to even light device based on diffuse reflection board, which comprises a housin, the casing make by light tight material, be provided with into unthreaded hole and receiving hole on the casing, hold the diffuse reflection board in the casing, shine on the diffuse reflection board from advancing the light that the unthreaded hole shines into, light is reflected to receiving hole department and jets out after being evened by the diffuse reflection board. Through setting up casing and diffuse reflection board, directly reflect from the receiving hole after carrying out the even light from the light that advances the unthreaded hole and incide, avoided the phenomenon of light multiple reflection in the integrating sphere among the prior art, reduced light loss, improved follow-up light detection's accuracy.

Description

Dodging device based on diffuse reflection plate

Technical Field

The utility model relates to an optical instrument technical field, in particular to even light device based on diffuse reflection board.

Background

The integrating sphere is a hollow sphere with the inner wall coated with white diffuse reflection material, and is also called photometric sphere, light flux sphere and the like. One or more window holes are formed on the wall of the ball and are used as a light inlet hole and a receiving hole for placing a light receiving device. The inner wall of the integrating sphere should be a good sphere, and it is generally required that it should deviate by no more than 0.2% of the inner diameter from the ideal sphere. The inner wall of the ball is coated with a desired diffuse reflective material, i.e., a material having a diffuse reflection coefficient close to 1. The common material is magnesium oxide or barium sulfate, which is mixed with colloid adhesive and sprayed onto the inner wall. The spectral reflectance of the magnesium oxide coating in the visible spectral range is over 99 percent, so that light entering the integrating sphere is reflected for multiple times by the inner wall coating to form uniform illumination on the inner wall. To obtain a high measurement accuracy, the aperture ratio of the integrating sphere should be as small as possible. The aperture ratio is defined as the ratio of the spherical area at the aperture of the integrating sphere to the area of the entire sphere's inner wall. The uniformity of the light exiting through the receiving aperture of the integrating sphere is very good, but has one disadvantage: the light intensity is lost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an even light device based on diffuse reflection board, the light intensity loss is low and even light is effectual.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a dodging device based on diffuse reflection board, includes the casing, the casing make by opaque material, be provided with into light hole and receiving hole on the casing, hold diffuse reflection board in the casing, shine on the diffuse reflection board from the light that advances the light hole and shine, light is reflected to receiving hole department and jets out after being homogenized by diffuse reflection board.

Compared with the prior art, the utility model discloses there are following technological effect: through setting up casing and diffuse reflection board, directly reflect from the receiving hole after carrying out the even light from the light that advances the unthreaded hole and incide, avoided the phenomenon of light multiple reflection in the integrating sphere among the prior art, reduced light loss, improved follow-up light detection's accuracy.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is a graph of the intensity of the integrating sphere and the emergent ray of the device, wherein the upper curve is of the device and the lower curve is of the integrating sphere.

Detailed Description

The present invention will be described in further detail with reference to fig. 1 to 3.

Referring to fig. 1 and 2, a light uniformizing device based on a diffuse reflection plate includes a housing 10, where the housing 10 is made of an opaque material, a light inlet hole 31 and a receiving hole 41 are formed in the housing 10, the diffuse reflection plate 20 is accommodated in the housing 10, light irradiated from the light inlet hole 31 irradiates the diffuse reflection plate 20, and the light is uniformized by the diffuse reflection plate 20 and then reflected to the receiving hole 41 to be emitted. Through the arrangement of the shell 10 and the diffuse reflection plate 20, light incident from the light inlet hole 31 is homogenized and then directly reflected from the receiving hole 41, so that the phenomenon of multiple reflection of light in an integrating sphere in the prior art is avoided, the light loss is reduced, and the accuracy of subsequent light detection is improved. After the same incident light is irradiated into the light inlet hole 31 and then the uniformity and the light intensity of the light emitted from the light receiving hole 41 are measured, it can be found that the uniformity of the emitted light is not much different compared to the integrating sphere when the diffuse reflection plate 20 is used, but the light intensity when the diffuse reflection plate 20 is used is much stronger than that of the integrating sphere scheme, as shown in fig. 3.

Preferably, the housing 10 is in a square box shape, the light inlet hole 31 is formed in the top of the square box, the receiving hole 41 is formed in the side of the square box, and the incident light and the emergent light form an included angle of 90 degrees; the diffusely reflecting plate 20 is disposed in the square box at an inclination of 45 degrees. The diffuse reflection plate 20 is designed in a box shape, so that the diffuse reflection plate is very convenient to process, the light inlet hole 31 and the receiving hole 41 can be well arranged, and the diffuse reflection plate can be also very conveniently placed in the box.

Preferably, the housing 10 is a square solid; the casing 10 is provided with a strip-shaped hole 11, the strip-shaped hole 11 penetrates through the front side surface and the rear side surface of the casing 10, and the diffuse reflection plate 20 and the strip-shaped hole 11 are in plug fit, so that the diffuse reflection plate 20 can be conveniently mounted and dismounted; first round hole 12 has been seted up downwards to the top surface of casing 10 and has been supplied the light to pass through, and second round hole 13 has been seted up towards the left surface direction to the right flank of casing 10 and has been supplied the light that emits to pass through, and first round hole 12 and second round hole 13 all extend to bar hole 11 department in to casing 10, and during actual processing, the hole core of first round hole 12 and second round hole 13 is perpendicular each other. And by adopting a solid structure, better sealing performance can be realized, and light interference is avoided.

More preferably, according to different requirements, the aperture requirements of the light inlet hole 31 and the receiving hole 41 are different, and if the two holes are directly formed in the housing 10, the sizes of the two holes are fixed and cannot be adjusted, so in the present application, preferably, the top surface of the housing 10 is provided with the first boss 30, the first boss 30 is detachably matched with the top surface of the housing 10 through a thread or a bolt, and the center of the first boss 30 is provided with a through hole to form the light inlet hole 31; the right side of the casing 10 is provided with a second boss 40, the second boss 40 is detachably matched with the right side of the casing 10 through a thread or a bolt, and a through hole is formed in the center of the second boss 40 to form a receiving hole 41. A plurality of first bosses 30 and second bosses 40 may be provided, the apertures of the light inlet holes 31 provided on different first bosses 30 are different, and the apertures of the receiving holes 41 provided on different second bosses 40 are also different, so that the light inlet holes 31 and the receiving holes 41 with appropriate apertures may be selected as required. The first boss 30 and the second boss 40 are connected to the housing 10 in various ways, and may be connected by a screw or a bolt, and in fig. 1 and 2, the first boss 30 is connected by a screw and the second boss is connected by a bolt.

In order to facilitate the installation of the device with other components, the bottom of the housing 10 is provided with an annular boss 14, and the annular boss 14 is provided with an installation hole 141. When in use, the device can be directly matched with the mounting hole 141 through the bolt to be fixedly mounted on other parts.

Claims

1. A dodging device based on a diffuse reflection plate is characterized in that: the light-diffusing type LED lamp comprises a shell (10), wherein the shell (10) is made of a light-tight material, a light inlet hole (31) and a receiving hole (41) are formed in the shell (10), a diffuse reflection plate (20) is accommodated in the shell (10), light irradiated from the light inlet hole (31) irradiates on the diffuse reflection plate (20), and the light is reflected to the receiving hole (41) to be emitted after being homogenized by the diffuse reflection plate (20).

2. A diffusely reflecting plate based dodging apparatus as recited in claim 1, wherein: the shell (10) is in a square box shape, the light inlet hole (31) is formed in the top of the square box, the receiving hole (41) is formed in the side face of the square box, and the incident light and the emergent light form an included angle of 90 degrees; the diffuse reflection plate (20) is obliquely arranged in the square box at an angle of 45 degrees.

3. A diffusely reflecting plate based dodging apparatus as recited in claim 1, wherein: the shell (10) is a square solid; a strip-shaped hole (11) is formed in the shell (10), the strip-shaped hole (11) penetrates through the front side face and the rear side face of the shell (10), and the diffuse reflection plate (20) and the strip-shaped hole (11) are in inserted fit; the top surface of casing (10) has seted up first round hole (12) downwards and has supplied the light to pass through, and the right flank of casing (10) has been towards the left surface direction and has been seted up second round hole (13) and has supplied the light that emits to pass through, and first round hole (12) and second round hole (13) all extend to bar hole (11) department in to casing (10).

4. A diffusely reflecting plate based dodging apparatus as claimed in claim 3, wherein: a first boss (30) is arranged on the top surface of the shell (10), the first boss (30) is detachably matched with the top surface of the shell (10) through threads or bolts, and a through hole is formed in the center of the first boss (30) to form a light inlet hole (31); the right side face of the shell (10) is provided with a second boss (40), the second boss (40) is detachably matched with the right side face of the shell (10) through threads or bolts, and a through hole is formed in the center of the second boss (40) to form a receiving hole (41).

5. A diffusely reflecting plate based dodging device as claimed in claim 4, wherein: an annular boss (14) is arranged at the bottom of the shell (10), and a mounting hole (141) is formed in the annular boss (14).