CN201184820Y

CN201184820Y - Light sensing apparatus

Info

Publication number: CN201184820Y
Application number: CNU2008200073553U
Authority: CN
Inventors: 陈忠男; 沈志雄; 黄宗立; 黄基坪; 吴文和
Original assignee: SENTRY OPTRONICS CORP
Current assignee: SENTRY OPTRONICS CORP
Priority date: 2008-03-24
Filing date: 2008-03-24
Publication date: 2009-01-21
Anticipated expiration: 2018-03-24

Abstract

The utility model provides a photic sensing device, which comprises a shell comprising a projection area and a grip area. An included angle is formed between the projection area and the grip area. The end face of the projection area is provided with an opening. The photic sensing device further comprises a parabolic reflector with the specular surface at the opening of the shell facing the projection area; a permanent seat connected with a photic sensor; an amplifying circuit arranged below the permanent seat and used for magnifying electrical signals converted after a photic sensing wafer receives the energy of incident light; a display arranged on the reverse on the outer side of the projection area and the grip area inside the shell; an operation light data circuit board arranged at the position of the grip area and connected with an upper lift component so that the incident light in the shell can be read and determined correctly and displayed through the display on the shell. The photic sensing wafer arranged in the photic sensor can receive the incident light reflected from the parabolic reflector.

Description

Light sensing apparatus

Technical field

This is novel to relate to a kind of light sensing apparatus, refers to a kind of device of reflecting light detecting system of tool small angle especially, can be used in the device of infrared ray sensing temperature, ultraviolet ray test intensity or other light sources characteristic technology.

Background technology

The light sensing apparatus purposes is very widely, and a wherein project of normal use is the measurement that is applied to the ultraviolet ray value; Or be applied to contactless temperature sensing device, described temperature sensing device can be widely used in especially that industry is used for and the thermometric of medical use, its structure is all roughly the same, only be that the data that reads light source has different, if when being used in temperature sensing device with light sensing apparatus, can measure infrared ray (or other light) energy that any body surface discharges, light detecting system through light sensing apparatus is collected, and convert electronic signal to by OPTICAL SENSORS and measure and reading of data, because infrared ray does not need directly to contact with determinand, so can be used in the accurate thermometric of long distance at the dangerous place of industry, perhaps be used in medically, for example: the temp measuring system that speeds passage through customs at quarantine critical point, it is very common therefore using.

Existing long distance light sensing apparatus according to the difference of its light detecting system, approximately can be divided into refraction type and reflective two kinds:

Refraction type: as U.S. Pat 4,626,686 is described, front end at photosensitive device is provided with Fresnel plastic cement lens (Fresnel lens), and having passed through Fresnel plastic cement lens, infrared ray supplies the photosensitive device interpretation again, so its light penetration rate variance, and the refractive index difference of different wave length causes dispersion phenomenon, deviation is arranged when causing reading of data, is its shortcoming; Being to use a kind of semiconductor lens in addition is material, but cost is very expensive, and the refractive index that also still has different wave length is different and cause the shortcoming of dispersion phenomenon.

Reflective: common reflecting light detecting system is to use oval shape mirror, shown in the novel patent of TaiWan, China No. 529711 and M282167 number, its characteristic is that the light source that oval shape mirror is only launched the focus of described ellipse has spotlight effect, therefore can't collect correct incident ray widely, cause the light gathering of incident ray very poor, so problem is the bottleneck of industry and can't breaking through always.

This Novel Human above-mentioned shortcoming that ruminates over is thought with parabolic reflector, in conjunction with the overlap joint of photosensitive device housing, can solve above-mentioned existing problem.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model is: a kind of light sensing apparatus is provided, makes its incident ray that can extensively be received from object under test and reflected, obtain beasurement base accurately.

For achieving the above object, the technical solution adopted in the utility model comprises:

A kind of light sensing apparatus is characterized in that comprising:

One housing, described housing include a projection area and handle district, and described projection area and handle interval be formed with an angle, and the end face of projection area is provided with an opening;

One parabolic mirror, its minute surface are provided in a side of the aperture position of housing towards the projection area;

One holder joins with an OPTICAL SENSORS, and the light sensing wafer of described OPTICAL SENSORS inside is received from the incident light of parabolic mirror reflection;

One display, the top, handle district that is located at housing is located;

One circuit board is located at the handle district, and is connected with amplifying circuit, display and power unit.

A kind of light sensing apparatus is characterized in that comprising:

One parabolic mirror, its minute surface is towards the aperture position of projection area;

One guides lens set, is located at minute surface the place ahead of parabolic mirror;

One display, the top, handle district that is located at housing is located;

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be: the incident ray that it can extensively be received from object under test and is reflected obtains beasurement base accurately; And the profile of light sensing apparatus has handle district and projection area, above-mentioned light detecting system should be able to be arranged on any position of housing simultaneously, then the guiding lens set is set in addition again in the place ahead of parabolic reflector, make light reflex to original light detecting system again through the guiding lens set earlier, make the profile of light sensing apparatus and inner assembling have more changeability.

Description of drawings

Fig. 1 is this first kind of novel (basic structure) synoptic diagram;

Fig. 2 is this second kind of novel alternate embodiment figure;

Fig. 3 is this novel the third alternate embodiment figure;

Fig. 4 is this 4th kind of novel alternate embodiment figure;

Fig. 5 is this 4th kind of novel alternate embodiment figure;

Fig. 6 is this novel structure and opticpath key diagram;

Fig. 7 be this novel be example with first kind (basic structure), made temperature sensing device partial perspective cutaway view.

Description of reference numerals: 10 housings; 11 projection areas; 110 end faces; 111 openings; 112 cover tubes; 113 diaphragms; 114 through holes; 115 target-designators; 12 handle districts; 13 fixed mounts; 14 main buttons; 20 parabolic mirrors; 21 minute surfaces; 30 holders; 40 OPTICAL SENSORS; 41 light sensing wafers; 50 circuit boards; 51 amplifying circuits; 60 displays; 70 guiding lens set; 701 level crossings; 71 guiding lens set; 711 para-curve mirrors; 80 power units; The L1 incident light; The L2 skew ray; The L3 incident light; The θ angle.

Embodiment

For making your juror can further understand the content that this is novel, please cooperate referring to description of drawings, describe in detail as the back:

Please referring to shown in Figure 1, it is the basic structure synoptic diagram of this novel light sensing apparatus, announcement has a housing 10, described housing 10 includes a projection area 11 and handle

district

12, and 12 in described projection area 11 and handle district are formed with an angle theta, and described angle theta serves as the best angle category that grips between 90 ° to 150 ° approximately; The end face 110 of above-mentioned projection area 11 is provided with an opening 111, and described opening 111 is circular mostly, and can be provided with one diaphragm 113 behind the opening 111 of projection area 11, and also is provided with the through hole 114 with respect to opening 111 on the diaphragm 113.

One parabolic mirror 20, its minute surface 21 are opening 111 positions of 11 towards the projection area; One holder 30 is the place aheads slightly that are connected with at parabolic mirror 20, is to join with an OPTICAL SENSORS 40, and the light sensing wafer 41 of described OPTICAL SENSORS 40 inside be able to be received from the incident light L1 of parabolic mirror 20 reflections.

Please cooperate referring to Fig. 1, shown in Figure 6, end face 110 and diaphragm 113 formed shieldings by housing 10 projection areas 11, the light source noise that can stop many diffusions, the light channel that opening 111 and through hole 114 then can provide forward to inject enters parabolic mirror 20, and reflex on the light sensing wafer 41 of OPTICAL SENSORS 40 inside, Here it is the normal and incident light L1 that can receive, please referring to shown in Figure 6, though minority skew ray L2 can be incident upon parabolic mirror 20, but because the position of reflection is not the position of light sensing wafer 41, so can not cause erroneous judgement, be this novel main clever thought part of parabolic mirror 20 of taking.

Please referring to Fig. 1, shown in Figure 7, a display 60 is provided in a side of 12 top positions, handle district of housing 10; The circuit board 50 of one computing light data then can be located at the position in handle district 12 and be connected with amplifying circuit 51, display 60 and power unit 80 respectively; Practical structure embodiment, as shown in Figure 7, can be provided with a main button 14 in the described handle district 12, be used for touch measuring action and trigger target-designator 115 by, described target-designator is to be used for marking the position that refers to determinand, can make the infrared ray on described determinand surface or ultraviolet ray be incident on light sensing apparatus with subparallel angle, and described target-designator is that laser diode or light emitting diode constitute, it is not this novel case institute lay special stress on part, does not give unnecessary details so give; And for parabolic mirror 20 can be fixed, establish in the housing 10 to extend and be provided with fixed mount 13 and be used for supporting; In addition,, can be provided with always cover tube 112, can more stop veiling glare to enter the minute surface 21 of parabolic mirror 20 from the outside, can make that light signal is not mixed, astigmatism is disturbed in minute surface 21 the place aheads of parabolic mirror 20.

When light sensing apparatus inside because of increasing attached member, when the consideration of other moulding is perhaps arranged, as shown in Figure 2, when parabolic mirror 20 is provided in a side of 12 positions, inclined to one side handle district in the housing 10, this is not end face 110 openings 111 that are right against light sensing apparatus projection area 11, this moment can be in minute surface 21 the place aheads of parabolic mirror 20, a guiding lens set 70 is set up in end face 110 openings 111 positions of projection area 11, mainly formed, the incident light L 3 that injects housing 10 can be directed to the minute surface 21 of parabolic mirror 20 by two opposite planar mirrors 701, on the light sensing wafer 41 of OPTICAL SENSORS 40 inside for requiring; And described guiding lens set 70, parabolic mirror 20 and OPTICAL SENSORS 40 can be connected with into a module as shown in Figure 4, and be more convenient in assembling.

, be to establish a guiding lens set 71 please, have two para-curve mirrors 711, also can guide lens set 70, parabolic mirror 20 and OPTICAL SENSORS 40 places correct being directed to of incident light L3 according to putting above-mentioned design referring to shown in Figure 3; And described guiding lens set 70, parabolic mirror 20 and OPTICAL SENSORS 40 can be connected with into a module as shown in Figure 5, and be more convenient in assembling.

Because the light sensing apparatus that this novel use parabolic reflector, holder and OPTICAL SENSORS are combined into, the incident ray that makes it can extensively be received from object under test and reflected, and noise light all can not be read, so can obtain beasurement base accurately, is this novel main advantage.

Have handle district and projection area because this novel profile with temperature sensing device is set as, cooperate above-mentioned light sensing apparatus, be not only infrared ray, other all can use as ultraviolet ray or other luminous energies, are facility in operation.

Because this novel the place ahead at parabolic reflector is provided with the guiding lens set more in addition, make light reflex to original light detecting system again through the guiding lens set earlier, making the profile and the inner assembling of light sensing apparatus have more changeability, is this novel another advantage.

This is novel to be a special and novel design, to be to use in temperature sensing device or ultraviolet measurement be very accurate no matter this is novel, can use all very convenient and practical for commercial measurement or medical science, but if full feature is this novel feature of utilization, when only being simply additional or change OPTICAL SENSORS infrared ray or ultraviolet sensor, must belong to this novel content.

More than explanation is just illustrative for the utility model; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, but all will fall within the protection domain of the present utility model.

Claims

1. light sensing apparatus is characterized in that comprising:

One display, the top, handle district that is located at housing is located;

2. light sensing apparatus according to claim 1 is characterized in that: the interval formed angle of the projection area of housing and handle is between 90 ° to 150 °.

3. light sensing apparatus according to claim 1 is characterized in that: the projection area end face opening of housing is for circular.

4. light sensing apparatus according to claim 1 is characterized in that: be equipped with a main button in the handle district, be used for touching and measure action and trigger target-designator, described target-designator is provided in a side of in the projection area, emits by the end face opening.

5. light sensing apparatus according to claim 4 is characterized in that: described target-designator is constituted by laser diode or light emitting diode.

6. light sensing apparatus according to claim 1 is characterized in that: be provided with the fixed mount that joins with parabolic mirror in the housing.

7. light sensing apparatus according to claim 1 is characterized in that: in minute surface the place ahead of parabolic mirror, be provided with cover tube always.

8. light sensing apparatus according to claim 1 is characterized in that: the opening rear in the housing projection area is provided with diaphragm at least one, and described diaphragm is provided with through hole.

9. light sensing apparatus according to claim 1 is characterized in that: amplifying circuit is located at the fixed mount below.

10. light sensing apparatus is characterized in that comprising:

One display, the top, handle district that is located at housing is located;

11. light sensing apparatus according to claim 10 is characterized in that: the guiding lens set is made up of two opposite planar mirrors, and last incident light is to inject parabolic mirror, and the light sensing wafer interpretation of confession OPTICAL SENSORS inside.

12. light sensing apparatus according to claim 10 is characterized in that: the guiding lens set is made up of two para-curve mirrors.

13. light sensing apparatus according to claim 10 is characterized in that: described guiding lens set, parabolic mirror and OPTICAL SENSORS are to be set as a module.

14. light sensing apparatus according to claim 10 is characterized in that: the opening rear in the housing projection area is provided with diaphragm at least one, and is to be provided with through hole on the described diaphragm.