CN200941146Y

CN200941146Y - Light box for detection of optical module

Info

Publication number: CN200941146Y
Application number: CN200620122120.XU
Authority: CN
Inventors: 李昌远
Original assignee: UMA Tech Inc
Current assignee: UMA Tech Inc
Priority date: 2006-06-30
Filing date: 2006-06-30
Publication date: 2007-08-29
Anticipated expiration: 2016-06-30

Abstract

The detection-using light box for the optical module group of this utility model is provided with at least a power supply, a dispersive unit, an optical filter module group, and two fibers. The optical filter module group is arranged between the power supply and the dispersive unit, which comprises a plurality of color temperature filters and carry on the color temperature adjustment for the transmitted light beam of the power supply before the transmitted beam reaches the dispersive unit, then the dispersive unit averages the transmitted light beam of the power supply into the first light beam and the second light beam, and projects certain individual light beam onto the detection drawing surface through the two fiber transmission. The utility model can solve the problem of asymmetrical luminance distribution of the projection light beam from the known light box.

Description

The optics module detects uses light box

Technical field

The utility model is about a kind of equipment of optics module detection usefulness, particularly about a kind of light box that is used for optics module detection usefulness.

Background technology

See also shown in Figure 1, detect the light box 10 of usefulness for the known optical module, here the optics module of being mentioned 16 is photographic camera (PC camera) on digital camera, mobile phone camera, the computer or the like for example, and the characteristic of the optics module 16 that is detected has comprised its resolution, its opto-electronic conversion function (OECF; Opto-electronic conversion function), shade of gray or the like.

With regard to the light box 10 that this known optical module detects usefulness, the global design of light box meets the (ISO of International Standards Organization; International Standard Organization) and standard action image architecture (SMIA; Standard mobile imaging archi tecture) standard wherein detects the drawing that drawing (Test Chart) 15 can adopt different size according to different demands.For example, when the characteristic that will detect is the resolution of optics module 16, it is general that adopt is as shown in Figure 2 local I S012233 standard detection drawing 15a, and when the characteristic that will detect was the opto-electronic conversion function of optics module 16, then general what adopt was that as shown in Figure 3 local I SO opto-electronic conversion functional standard detects drawing 15b.

On the other hand, each arrangements of components in the light box 10, the right side of light box 10 has disposed the combination of a bulb 11 and diffuser plate (Diffuser) 12, the left side has disposed the combination of a bulb 13 and diffuser plate 14, bulb 11 and bulb 13 are own as light source, and the light that

diffuser plate

12 and 14 is used for respectively bulb 11 and bulb 13 are projected can be evenly distributed on the detection drawing 15.In addition, in order to allow light box 10 can simulate the lighting environment of different-colour (color temperature), between optics module 16 to be measured and detection drawing 15, disposed an optical filter 17.

Detect the global design of the light box 10 of usefulness about this known optical module, have several problems: the first, the lamp source of this known light box adopts the combination of a plurality of bulbs and diffuser plate to constitute, and because the life-span attenuation of each bulb is asynchronous, thereby the brightness that each bulb showed will be to some extent difference, and cause the situation of brightness and color temperature distribution inequality easily.In addition, although diffuser plate helps the homogenising of distribution of light, yet when the distance between bulb and the detection drawing can't further widen, the uniformization effect of distribution of light will be restricted; The second, since the allocation position of optical filter between optics module to be measured and detect between the drawing, thereby the result of test tends to be subjected to the influence of the material behavior of optical filter own, thereby increases the puzzlement when detecting.

Summary of the invention

The purpose of this utility model is to provide a kind of optics module detection light box of tool high evenness Luminance Distribution.

Another purpose of the present utility model is to provide a kind of optics module of lighting environment of tool adjustable color temperature to detect and uses light box.

Optics module of the present utility model detects and uses light box, has a light source, a spectrophotometric unit, an optical filter module and two optical fiber at least.The optical filter module places between light source and the spectrophotometric unit, it comprises a plurality of colour temperature filter discs and before the outgoing beam of light source arrives spectrophotometric unit, outgoing beam to light source carries out the colour temperature modulation, spectrophotometric unit is divided into one first light beam and one second light beam with the outgoing beam of light source afterwards, and is projected to by two Optical Fiber Transmission individually on the detection drawing.

Among one embodiment, the optical filter module is connected with a motor gear train, and the motor gear train is connected with motor control unit, is switched between different colour temperature filter discs by the control drive optical filter module of motor control unit to the motor gear train.

In addition, the both sides of light box more can dispose two adjustable optic fiber holders that are connected with the output terminal of aforementioned optical fiber individually respectively, these adjustable optic fiber holders can carry out the adjustment of its angle around the rotation of its stationary shaft, can adjust on demand thus to be projected to first light beam that detects on the drawing and the crevice projection angle of second light beam.

When the utility model carries out the optical characteristics detection of optics module with a light box, solved the brightness that many lamps source designing institute of known light box causes and the problem of color temperature distribution inequality, and known light box between optics module to be measured and detect the detection interference problem that material behavior caused of the optical filter between the drawing.

The utility model detects with the known optical module and compares with light box, have following effect and attendant advantages: the first, the utility model only adopts one group of light source, does not have because the uneven problem of the life-span of the multiple sets of light sources asynchronous Luminance Distribution that causes of decay compared to known technology.The second, the utility model adopts the collocation of spectrophotometric unit and optical fiber, under the benefiting of the total reflection characteristic of optical fiber, can promote the illuminance distribution effect of light source outgoing beam greatly, is good compared to the known technology effect.Three, the utility model can be adjusted being projected to first light beam that detects on the drawing and the crevice projection angle of second light beam according to demand utilization adjustable optic fiber holder, thereby can further strengthen the uniformity coefficient of the Luminance Distribution that is projected to the light beam that detects drawing.

Description of drawings

Fig. 1: the light box synoptic diagram that detects usefulness for the known optical module.

Fig. 2: be the partial schematic diagram of ISO 12233 standard detection drawings.

Fig. 3: the partial schematic diagram that detects drawing for opto-electronic conversion function according to the ISO standard.

Fig. 4: the light box synoptic diagram that detects usefulness for the optics module of the utility model one embodiment.

Drawing reference numeral:

10 light boxs, 11 bulbs

12 diffuser plates, 13 bulbs

14 diffuser plates 15 detect drawing

15a standard detection drawing 15b detects drawing

16 optics modules, 17 optical filters

20 light boxs, 21 light sources

22 optical filter modules, 23 motor gear trains

24 motor control units, 25 spectrophotometric units

26 optical fiber, 27 adjustable optic fiber holders

28 optics modules 29 detect drawing

Embodiment

See also Fig. 4, optics module detection light box 20 for the utility model one embodiment, comprise a light source 21 (for example being bulb), an optical filter module 22, a motor gear train 23, a motor control unit 24, a spectrophotometric unit 25, two optical fiber 26 and two adjustable optic fiber holders 27, in order to for example being that the optics module 28 of digital camera, mobile phone camera or computer photography camera carries out the detection of all optical characteristics to one.The optics module of present embodiment detect with the annexation of each element of light box 20 and function represent further specify as follows.

At first with regard to source ends, on the path of light source 21 outgoing beams, disposed spectrophotometric unit 25, be divided into one first light beam and one second light beam in order to outgoing beam with light source 21, between light source 21 and spectrophotometric unit 25, then disposed the optical filter module 22 that includes a plurality of colour temperature filter discs, the outgoing beam of light source 21 arrives this spectrophotometric unit 25 again by described colour temperature filter disc earlier, before these colour temperature filter discs arrive spectrophotometric unit 25 in order to the outgoing beam at light source 21, outgoing beam with light source 21 carries out the colour temperature modulation earlier, to simulate the lighting environment of different-colour.Secondly, with regard to the transmission of outgoing beam, present embodiment has disposed two optical fiber 26, in order to aforesaid first light beam of indivedual transmission and second light beam and first light beam and second light beam are projected to one furnish to positioned detection drawing 29, detection drawing 29 herein is identical with known detection drawing 15, can be as shown in Figure 2 local I S012233 standard detection drawing 15a or the detection of local photoelectricity transfer function (OECF) as shown in Figure 3 drawing 15b.

In addition, present embodiment has more disposed two adjustable optic fiber holders 27 respectively in the both sides of light box 20, these adjustable optic fiber holders 27 are connected with the output terminal of optical fiber 26 respectively, and can carry out the adjustment of its angle around its stationary shaft rotation, can adjust thus and be projected to first light beam that detects on the drawing 29 and the crevice projection angle of second light beam, and further strengthen the uniformity coefficient of the Luminance Distribution that is projected to the light beam that detects drawing.

Moreover, present embodiment is in the source ends part, a motor gear train 23 that is connected with optical filter module 22 and a motor control unit 24 that is connected with motor gear train 23 have been disposed, control by 24 pairs of motor gear trains 23 of motor control unit is switched between different colour temperature filter discs to drive optical filter module 22, and reaches the purpose of the lighting environment that simulates different-colour.

With regard to design of the present utility model, at first,, thereby do not have the uneven problem of the life-span asynchronous Luminance Distribution that causes of decay of known multiple sets of light sources because the utility model only adopts one group of light source 21.Secondly,, can promote the illuminance distribution effect of first light beam and second light beam of light source 21 greatly because the utility model adopts the collocation of spectrophotometric unit 25 and optical fiber 26, thereby utilizes the total reflection characteristic of optical fiber 26, better than known technology effect.Especially, under the prerequisite of single light source, when colour temperature drift produces,, thereby can not cause being projected to the light beam that detects on the drawing 29 and have the situation of irregular colour to take place because the drift of the colour temperature of first light beam that each optical fiber 26 transmitted and second light beam is to produce simultaneously and for consistent.

In addition, because the utility model can be projected to first light beam that detects on the drawing 29 and the crevice projection angle of second light beam is adjusted according to 27 pairs of demand utilization adjustable optic fiber holders, thereby can further strengthen the uniformity coefficient of the Luminance Distribution that is projected to the light beam that detects drawing 29.

Though the utility model discloses with specific embodiment; but it is not in order to limit the utility model; any those skilled in the art; the displacement of the equivalent assemblies of under the prerequisite that does not break away from design of the present utility model and scope, having done; or, all should still belong to the category that this patent is contained according to equivalent variations and modification that the utility model scope of patent protection is done.For example, in the utility model, as long as the transfer function of optical fiber can be given full play to, then the length of optical fiber and putting position can be unrestricted; Again, the driving of optical filter module of the present utility model also can utilize other mode to drive and relevant coupled circuit is controlled except realizing with motor gear train and motor control unit.

Claims

1. an optics module detects and uses light box, it is characterized in that comprising:

One light source;

One outgoing beam with this light source is divided into the spectrophotometric unit of one first light beam and one second light beam;

One optical filter module comprises a plurality of colour temperature filter discs, places between this light source and this spectrophotometric unit, and the outgoing beam of this light source arrives this spectrophotometric unit again by described colour temperature filter disc earlier;

Two transmit this first light beam and this second light beam respectively and this first light beam and this second light beam are projected to an optical fiber that detects on the drawing.

2. optics module as claimed in claim 1 detects uses light box, it is characterized in that: more comprise two adjustable optic fiber holders, it is disposed at the both sides of this light box respectively and connects the output terminal of described two optical fiber, and each adjustable optic fiber holder has an adjustable anglec of rotation.

3. optics module as claimed in claim 1 detects and uses light box, and it is characterized in that: more comprise a gear train and a control module, this control module is connected with this gear train, and this gear train is connected with this optical filter module.

4. optics module as claimed in claim 3 detects and uses light box, it is characterized in that: this gear train is the gear train that a motor drives.

5. optics module as claimed in claim 1 detects and uses light box, it is characterized in that: this optics module be digital camera, mobile phone camera and computer photography camera one of them.

6. an optics module detects and uses light box, it is characterized in that comprising:

One light source;

Two transmit this first light beam and this second light beam respectively and this first light beam and this second light beam are projected to an optical fiber that detects on the drawing;

Two adjustable optic fiber holders, it is disposed at the both sides of this light box respectively and connects the output terminal of these optical fiber, and each adjustable optic fiber holder has an adjustable anglec of rotation;

One gear train, it is connected with this optical filter module;

One control module, it is connected with this gear train.

7. optics module as claimed in claim 6 detects and uses light box, it is characterized in that: this optics module be digital camera, mobile phone camera and computer photography camera one of them.

8. optics module as claimed in claim 6 detects and uses light box, it is characterized in that: this gear train is the gear train that a motor drives.