CN203519306U - Hand-held light fixture unified glare value optical measuring instrument - Google Patents

Abstract

Provided is a hand-held light fixture unified glare value optical measuring instrument. The measuring instrument comprises a laser range finder (1), an angle instrument (2), an imaging lens (3), a high-resolution CCD (4), a microprocessor (5) and a display (6). The laser range finder (1) projects a laser to reach to a target LED light fixture (7), at the same time, and observation distance from the laser range finder (1) to the target LED light fixture (7) can be measured. The angel instrument (2) outputs an angle value of a visual angle formed when the laser direction of the laser range finder (1) diverges from a horizontal direction to the microprocessor (5). The imaging lens (3) images the light of the target LED light fixture (7) and surrounding objects to the high-resolution CCD (4). The microprocessor (5) calculates a unified glare value of uncomfortable glare of a light fixture according to an image shot by the high-definition CCD (4), the observation distance and the visual angle. By using the instrument provided by the utility model, the unified glare values of uncomfortable glare of indoor and outdoor light fixtures in actual use environments can be accurately measured, and accordingly safe use of the light fixtures is standardized.

Description

Portable lamp type unified glare value optical measuring instrument

[technical field]

The utility model relates to a kind of light fixture type unified glare value optical measuring device, relates in particular to a kind of portable lamp type unified glare value optical measuring instrument.

[background technology]

Due to energy saving and the environment-friendly type of LED, the use of LED light fixture is more and more.But LED light fixture also exists a defect in use, namely, the luminous energy of LED converges, and LED light fixture is easy to bring the uncomfortable of lighting environment to people while using.The good lighting installation in workplace is not only confined to the operation visibility that provides good, the more important thing is that offering people feels comfortable luminous environment.Dazzle is by the excessive brightness in the visual field or crosses strong contrast and cause, can affect the visual imaging of people to object.In the standard of using at light fixture, there is the requirement of clear and definite non-comfort glare grade.

According to the requirement of the non-comfort glare grade of international standard CIE117-1995 light fixture, the non-comfort glare grade of light fixture can represent by CIE type unified glare value (UGR).Type unified glare value is that the light that the lighting device of tolerance in visual environment sends causes the psychological parameter of discomfort subjective response to human eye, and its computing formula is as follows:

$\mathrm{UGR}=8\log (\frac{0.25}{L_b}\·\mathrm{\Σ}\frac{L^2\·\mathrm{\ω}}{p^2})$

L wherein _bbackground luminance (cd/m ²), L is the brightness (cd/m of luminous component of each light source of observer's eyes direction ²), ω is the solid angle of the luminous component of each light source in observer's eyes direction; P is Gu Si (Guth) location index of each arbitrary source, relevant with its side-play amount apart from sight line.Gu Si (Guth) location index represents the impact on non-comfort glare of position that dazzle source occurs.

At present, the type unified glare value that light fixture characterizes non-comfort glare grade is all to calculate by computer software, CN102183301A has announced a kind of portable type unified glare measuring apparatus, utilize Optical imaging measurement system, by the parameter of imaging system and the mode of graphical analysis, calculate type unified glare index, detection speed is fast, is easy to carry.But this patent does not provide the measurements and calculations method of ancient this location index and light fixture solid angle, only rely on graphical analysis to obtain ancient this location index and the corresponding solid angle of target light fixture, precision is not high.In addition, do not find that there is again above-mentioned deficiency is carried out to improved document announcement and material object appears on the market.

[utility model content]

The purpose of this utility model is for the deficiencies in the prior art, and a kind of portable lamp type unified glare value optical measuring instrument is provided.

Solve the problems of the technologies described above and adopt following technical scheme:

A portable lamp type unified glare value optical measuring instrument, comprises laser range finder, inclinometer, imaging lens, high resolution CCD, microprocessor, display; Optar, inclinometer, high resolution CCD, display are connected with microprocessor respectively, and laser range finder projects laser and arrives target LED light fixture, and then laser range finder outputs to microprocessor by the distance value recording; Inclinometer outputs to microprocessor by the laser direction of laser range finder with respect to the deviation angle value of horizontal direction; Around the image formation by rays of scenery is on high resolution CCD by target LED light fixture and its for imaging lens, and high resolution CCD outputs to the image of shooting on microprocessor; The angle value that microprocessor records according to the brightness of target image, target LED light fixture and background luminance, inclinometer calculates the type unified glare value of the non-comfort glare of light fixture, and type unified glare value is outputed on display.

A portable lamp type unified glare value optical measuring instrument, described imaging lens is adjustable imaging lens group; The image calculation that described microprocessor is taken according to high resolution CCD goes out the pixel distribution of target light fixture imaging and the pixel distribution of background luminance; The distance value that the computing unit of microprocessor records according to the focal length of imaging lens and laser range finder calculates brightness value, background luminance value and the solid angle corresponding to target LED light fixture of target LED light fixture, the angle value at the visual angle recording in conjunction with inclinometer again, by formula computing unit, calculate the type unified glare value of non-comfort glare, last output display signal is to display.

The beneficial effects of the utility model are: this portable lamp type unified glare value optical measuring instrument is the measuring equipment that a kind of hand-held can be used for the actual use scenes of LED light fixture, adopt the type unified glare value of means non-comfort glare under actual use scenes to LED light fixture of graphical analysis to carry out high-precision measurement.This measurement device precision is high, be easy to carry about with one, and for the standard of light fixture, uses a kind of means of testing more is reliably provided.

[accompanying drawing explanation]

Fig. 1 is portable lamp type unified glare value optical measuring instrument structural representation of the present utility model.

Fig. 2 is the calculation process of type unified glare value of the present utility model.

[embodiment]

The utility model is described in further detail below in conjunction with embodiment and with reference to accompanying drawing: referring to Fig. 1, a portable lamp type unified glare value optical measuring instrument, comprises laser range finder 1, inclinometer 2, imaging lens 3, high resolution CCD 4, microprocessor 5, display 6; Optar 1, inclinometer 2, high resolution CCD 4, display 6 are connected with microprocessor 5 respectively, and laser range finder 1 projects laser 10 and arrives target LED light fixture 7, and then laser range finder 1 outputs to microprocessor 5 by the distance value recording; Inclinometer 2 outputs to microprocessor 5 by the laser direction of laser range finder 1 with respect to the deviation angle value of horizontal direction; Imaging lens 3 by target LED light fixture 7 and its around the light 9 of scenery 8 be imaged onto in high resolution CCD 4, high resolution CCD 4 outputs to the image of shooting on microprocessor 5; The angle value that microprocessor 5 records according to the brightness 17 of target image, target LED light fixture 7 and background luminance 18, inclinometer 2 calculates the type unified glare value of the non-comfort glare of light fixture, and type unified glare value is outputed on display 6.

Referring to Fig. 2, this portable lamp type unified glare value optical measuring instrument, described imaging lens 3 is adjustable imaging lens group; The image 11 that described microprocessor 5 is taken according to high resolution CCD 4 calculates the pixel distribution 12 of target LED light fixture 7 imagings and the pixel distribution 13 of background luminance.The distance value 15 that the computing unit 16 of microprocessor 5 records according to the focal length 14 of imaging lens 3 and laser range finder 1 calculates the solid angle 19 of brightness value 17, background luminance value 18 and target LED light fixture 7 correspondences of target light fixture 7, the angle value 20 at the visual angle recording in conjunction with inclinometer 2 again, by formula computing unit 21, calculate the type unified glare value of non-comfort glare, last output display signal 22 is to display 6.

Claims (2)

1. a portable lamp type unified glare value optical measuring instrument, it is characterized in that, comprise laser range finder (1), inclinometer (2), imaging lens (3), high resolution CCD (4), microprocessor (5), display (6); Optar (1), inclinometer (2), high resolution CCD (4), display (6) are connected with microprocessor (5) respectively, laser range finder (1) projects laser and arrives target LEI) light fixture (7), then laser range finder (1) outputs to microprocessor (5) by the distance value recording; Inclinometer (2) outputs to microprocessor (5) by the laser direction of laser range finder (1) with respect to the deviation angle value of horizontal direction; Imaging lens (3) is by target LEI) around the image formation by rays of scenery is upper to high resolution CCD (4) for light fixture (7) and its, and high resolution CCD (4) outputs to the image of shooting on microprocessor (5); Microprocessor (5) is according to target image, target LEI) brightness (17) of light fixture (7) and the angle value that background luminance (18), inclinometer (2) record calculate the type unified glare value of the non-comfort glare of light fixture, and type unified glare value outputed on display (6).

2. a kind of portable lamp type unified glare value optical measuring instrument according to claim 1, is characterized in that, described imaging lens (3) is adjustable imaging lens group; The image (11) that described microprocessor (5) is taken according to high resolution CCD (4) calculates target LEI) pixel distribution (12) of light fixture (7) imaging and the pixel distribution (13) of background luminance; The distance value (15) that the computing unit (16) of microprocessor (5) records according to the focal length of imaging lens (3) (14) and laser range finder (1) calculates brightness value (17), background luminance value (18) and the target LEI of target LED light fixture (7)) solid angle (19) that light fixture (7) is corresponding, the angle value (20) at the visual angle recording in conjunction with inclinometer (2) again, by formula computing unit (21), calculate the type unified glare value of non-comfort glare, last output display signal (22) is to display (6).

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