CN203101029U - Device for detecting relay lens - Google Patents
Device for detecting relay lens Download PDFInfo
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- CN203101029U CN203101029U CN 201320063729 CN201320063729U CN203101029U CN 203101029 U CN203101029 U CN 203101029U CN 201320063729 CN201320063729 CN 201320063729 CN 201320063729 U CN201320063729 U CN 201320063729U CN 203101029 U CN203101029 U CN 203101029U
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- relay lens
- lens
- distance
- detector
- scaling board
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Abstract
The utility model discloses a device for detecting a relay lens. The device comprises a work bench, a relay lens base, a detection lens, a relay lens base, a calibrating plate, a first distance adjusting mechanism, a second distance adjusting mechanism, an image sensor and a central processor, wherein the relay lens base is arranged on the work bench; the detection lens, the relay lens base and the calibrating plate are sequentially arranged at the position on the same straight line of the work bench; the first distance adjusting mechanism is respectively connected with the detection lens and the calibrating plate; the second distance adjusting mechanism is respectively connected with the detection lens and the relay lens base; the image sensor is connected with the detecting lens; the central processor is connected with the image sensor; the distance between the detection lens and the calibrating plate is adjusted to be a working distance of a virtual image (WDV) of the relay lens through the first distance adjusting mechanism; the relay lens is placed on the relay lens base; then the distance between the detection lens and the calibrating plate is enabled to be working distance of a real image (WDR) of the relay lens by the first distance adjusting structure; and the information of two images is processed through the central processor, and then the processing result is output, so that the detection for the relay lens is simpler, and the result accuracy is higher.
Description
Technical field
The utility model relates to the optical element detection range, particularly a kind of device that is used to detect relay lens.
Background technology
Relay lens, the main detection range that uses at the shooting module, effect is the virtual image that becomes a upright amplification in the farther position of object plane, to reach the purpose with short distance detection distant place image quality.At present relay lens is not had unified test stone, be difficult to differentiate quality, dragons and fishes jumbled together for the relay lens on the market, very different.
Relay lens comprises a plurality of parameter indexs, such as the effective focal length of relay lens, i.e. EFL(effective focal length).In the aerial optical system, effective focal length is by the principal plane of the front and back distance to corresponding focus.The EFL of relay lens decision in the optical system that becomes the virtual image object distance WDR (Working Distance of Real image) and the virtual image apart from WDV(Working Distance of Virtual image) between image concern that EFL, WDR and WDV are the very important parameters of relay lens.Because relay lens is similar to eyepiece, optical bench directly detects EFL can be very difficult, and the distance relation on the axle just when the EFL value is scaled image and concerns, can't take into account the depth of field, test and convert loaded down with trivial detailsly, operand is big, and result after the conversion and actual effect have certain error, cause the testing result accuracy rate of relay lens low, can't accurately focus when finally causing continuing in actual use mirror.
Thereby prior art is still waiting to improve and improve.
The utility model content
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is to provide a kind of device that is used to detect relay lens, and it is low to be intended to solve in the prior art testing result accuracy to relay lens, the loaded down with trivial details problem of testing and convert.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of device that is used to detect relay lens wherein, comprising:
Worktable,
Being arranged on being used on the described worktable places the relay lens pedestal of relay lens,
Be successively set on detector lens, relay lens pedestal and scaling board on the same linear position of described worktable,
First distance adjusting mechanism that is used to regulate distance between detector lens and the scaling board that is connected with described detector lens and described scaling board respectively,
The second distance governor motion that is used to regulate distance between detector lens and the relay lens pedestal that is connected with described detector lens and described relay lens pedestal respectively,
The imageing sensor that is used for obtaining the image information of described scaling board that is connected with described detector lens by described detector lens,
And being used for of being connected with described imageing sensor central processing unit that image information is handled.
The described device that is used to detect relay lens wherein, also is provided with first electronic distance measuring instrument that is used to measure distance between detector lens and the scaling board on described first distance adjusting mechanism.
The described device that is used to detect relay lens wherein, also is provided with second electronic distance measuring instrument that is used to measure distance between detector lens and the relay lens pedestal on the described second distance governor motion.
The described device that is used to detect relay lens, wherein, described imageing sensor is ccd image sensor or cmos image sensor.
The described device that is used to detect relay lens wherein, also is provided with a contrast unit in the described central processing unit.
The described device that is used to detect relay lens wherein, also is provided with a backlight on the described worktable, described detector lens, relay lens pedestal, scaling board and backlight set gradually.
The described device that is used to detect relay lens wherein, also comprises a display screen, and described display screen connects described central processing unit.
The described device that is used to detect relay lens, wherein, described worktable is an optical bench.
Compared to prior art, the device that is used to detect relay lens that the utility model provides, owing to adopted and comprised: worktable, being arranged on being used on the described worktable places the relay lens pedestal of relay lens, be successively set on the detector lens on the same linear position of described worktable, relay lens pedestal and scaling board, first distance adjusting mechanism that is used to regulate distance between detector lens and the scaling board that is connected with described detector lens and described scaling board respectively, the second distance governor motion that is used to regulate distance between detector lens and the relay lens pedestal that is connected with described detector lens and described relay lens pedestal respectively, the imageing sensor that is used for obtaining the image information of described scaling board that is connected with described detector lens by described detector lens, and being used for of being connected with described imageing sensor central processing unit that image information is handled; The distance of regulating detector lens and scaling board by first distance adjusting mechanism is the WDV of relay lens, obtaining described detector lens by imageing sensor again takes the image information of described scaling board and is sent to the central processing unit processing, again relay lens is placed on the relay lens pedestal, the distance of regulating detector lens and relay lens by the second distance adjustment structure makes the diaphragm face of relay lens overlap with the diaphragm face of detector lens, and then make that by the first distance adjustment structure distance of detector lens and scaling board is the WDR of relay lens, obtain described detector lens by imageing sensor again and take the image information of described scaling board and be sent to the central processing unit processing, result is handled and exported to two width of cloth image informations by central processing unit; Feasible simpler to the detection of relay lens, result precision is higher.
Description of drawings
Fig. 1 is the structured flowchart that is used to detect the device of relay lens of the present utility model.
Embodiment
The utility model provides a kind of device that is used to detect relay lens, and is clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, below with reference to the accompanying drawing embodiment that develops simultaneously the utility model further described.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also Fig. 1, Fig. 1 is the structured flowchart that is used to detect the device of relay lens of the present utility model.As shown in Figure 1, the device that is used to detect relay lens that the utility model provides comprises worktable 100, detector lens 110, relay lens pedestal 120, scaling board 130, first distance adjusting mechanism 140, second distance governor motion 150, imageing sensor 160 and central processing unit 170.Described relay lens pedestal 120 is arranged on the described worktable 100, is used to place relay lens.Described detector lens 110, relay lens pedestal 120 and scaling board 130 are successively set on the same linear position of described worktable 100, described detector lens 110 is taken scaling board 130 by relay lens 120, and the light of scaling board 130 reflections just is by entering the image that forms scaling board 130 in the detector lens 110 after relay lens 120 refractions.Described first distance adjusting mechanism 140 is connected with described scaling board 130 with described detection mirror 110 respectively, is used to regulate distance between detector lens 110 and the scaling board 130.Described second distance governor motion 150 connects described detector lens 110 and described relay lens pedestal 120 respectively, is used to regulate distance between detector lens 110 and the relay lens pedestal 120.Described imageing sensor 160 connects described detector lens, is used for obtaining by described detector lens 110 image information of described scaling board 130.Described central processing unit 170 connects described imageing sensor 160, is used for the image information that imageing sensor 160 sends is handled.
Preferably, described worktable 100 can be an optical bench.Described scaling board 130 is faced the one side of detector lens 110, the one side that just described detector lens 110 is taken scaling boards 130, and the color of this face is black partly white for half.Described detector lens 110 captured image information are exactly the image information in the sub-fraction zone on the black and white handing-over line of this face of sampling, handle by central processing unit 170 then.When practical application, described first distance adjusting mechanism 140 and second distance governor motion 150 all can be arranged on the described worktable 100, described scaling board 130 keeps motionless, described first distance adjusting mechanism 140 is regulated distance between detector lens 110 and the scaling board 130, i.e. the position of first distance adjusting mechanism 140 mobile detector lens 110 on the rectilinear direction of detector lens 110, relay lens pedestal 120 and scaling board 130.And the distance that second distance governor motion 150 is regulated detector lens 110 and relay lens pedestal 120, when described first distance adjusting mechanism 140 was regulated, described second distance governor motion 150 also and then moved.
Further, for conveniently knowing the distance between detector lens 110 and the scaling board 130, also be provided with first electronic distance measuring instrument that is used to measure distance between detector lens 110 and the scaling board 130 on described first distance adjusting mechanism 140, described first electronic distance measuring instrument is provided with an electronic display, by first distance adjusting mechanism, 140 adjustable ranges the time, described electronic display is the range of a signal value in real time, and is more accurate.
Further, be the convenient clear distance of understanding between detector lens 110 and the relay lens pedestal 120 directly perceived, also be provided with second electronic distance measuring instrument that is used to measure distance between detector lens 110 and the relay lens pedestal 120 on the described second distance governor motion 150.Also be provided with an electronic display on described second electronic distance measuring instrument, by second distance governor motion 150 adjustable ranges the time, described electronic display is the range of a signal value in real time, and is more accurate.
Preferably, described first electronic distance measuring instrument and second electronic distance measuring instrument can be infrared range-measurement system, laser range finder or ultrasonic range finder.
Further, described imageing sensor 160 is ccd image sensor or cmos image sensor.
In the present embodiment, described central processing unit 170 is used for sampled image information is handled, and is specially the mtf value of the sample area of calculating scaling board 130.Described MTF(Modulation Transfer Function), modulation transfer function just, i.e. the demand pairs that can differentiate in the width of 1mm, unit is lp/mm, corresponding mtf value under each spatial frequency, MTF is between 0-1.The MTF value illustrates that more near 1 the performance of camera lens is excellent more.Logarithmic code photo imaging quality influence maximum be the resolution and the contrast of camera lens.The unit of resolution be line right/millimeter (lp/mm), it is right that two lines of adjacent black and white can be called a line, the every millimeter demand pairs that can tell are exactly resolution.The method of general using shooting sinusoidal grating (the chequered with black and white grid in the test calibration plate) is carried out the resolution and the contrast of testing lens, and brightness is called " sinusoidal grating " by the cycle graph of sinusoidal variations.And the density degree of sinusoidal grating is called as " spatial frequency " (Spatial Frequency), and the unit of spatial frequency represents with lp/mm.The brightness of lp/mm sign unit length (every millimeter) is according to the periodicity of the figure of sinusoidal variations.
Further, also be provided with a backlight on the described worktable 100, described detector lens 110, relay lens pedestal 120, scaling board 130 and backlight set gradually.Described backlight is used for providing backlight to scaling board 130.
Further, the described device that is used to detect relay lens also comprises a display screen, and described display screen connects described central processing unit 170, is used for the display process result.Described display device is preferably display screens such as LCDs or OLED.
The principle of work of the relay lens pick-up unit that the utility model provides is as follows:
At first according to the parameter of relay lens to be measured, adjust distance between detector lens 110 and the relay lens 120 by first apart from adjusting mechanism 140, make that the distance of both apart is the WDV of relay lens, be the numerical value of the WDV parameter of relay lens, this can learn according to the performance parameter of relay lens to be measured, for example is 5 meters etc.Obtaining described detector lens 110 by imageing sensor 160 again takes the image information of described scaling board 130 and is sent to central processing unit 170 processing.170 pairs of image informations of described central processing unit calculate the real-time mtf value at WDV place.
Then relay lens is put into relay lens pedestal 120, the distance according to the designing requirement of relay lens is regulated between detector lens 110 and the relay lens pedestal 120 by second distance governor motion 150 makes the diaphragm face of relay lens overlap with the diaphragm face of detector lens 110.Make that by the first distance adjustment structure 140 detector lens 110 and the distance of scaling board 130 are the WDR of relay lens again, i.e. the numerical value of the WDR parameter of relay lens, this can learn according to the performance parameter of relay lens to be measured, be 40cm etc. for example.Obtain described detector lens 110 by imageing sensor 160 again and take the image information of described scaling board 130 and be sent to central processing unit 170 processing, calculate the real-time mtf value at WDR place.Described then central processing unit 170 is handled these two mtf values, and the output result, can show on display screen.Contrast WDV place's mtf value and WDR place mtf value, if two values are in designing permissible error, error is defined as MTF changing value＜0.05, then the WDV/WDR parameter of decidable relay lens meets design requirement.
Further, described central authorities manage and also are provided with a contrast unit in the device 170.Described contrast unit is used to contrast mtf value.Described central processing unit 170 is arranged on the circuit board, the circuit structure that the contrast unit in described central processing unit 170 and the central processing unit 170 is corresponding certain respectively.When practical application, described central processing unit 170 can be arranged on and be electrically connected described detector lens 110 on the described worktable 100, can also external detector lens 110 be connected at a distance by data line, thereby realizes the Long-distance Control processing.
In sum, the device that is used to detect relay lens that the utility model provides comprises worktable, detector lens, relay lens pedestal, scaling board, first distance adjusting mechanism, second distance governor motion, imageing sensor and central processing unit; Described relay lens pedestal is arranged on the described worktable; Described detector lens, relay lens pedestal and scaling board are successively set on the same linear position of described worktable; Described first distance adjusting mechanism is connected with described scaling board with described detection mirror respectively; Described second distance governor motion connects described detector lens and described relay lens pedestal respectively; Described central processing unit connects described detector lens by imageing sensor; The distance of regulating detector lens and scaling board by first distance adjusting mechanism is the WDV of relay lens, obtaining described detector lens by imageing sensor again takes the image information of described scaling board and is sent to the central processing unit processing, again relay lens is placed on the relay lens pedestal, the distance of regulating detector lens and relay lens by the second distance adjustment structure makes the diaphragm face of relay lens overlap with the diaphragm face of detector lens, and then make that by the first distance adjustment structure distance of detector lens and scaling board is the WDR of relay lens, obtain described detector lens by imageing sensor again and take the image information of described scaling board and be sent to the central processing unit processing, result is handled and exported to two width of cloth image informations by central processing unit; Feasible simpler to the detection of relay lens, result precision is higher.The device that is used to detect relay lens that the utility model provides, judge relay lens image relation by the imaging of comparative analysis actual range with by the picture element of imaging behind the relay lens, compared to prior art, significantly reduced in the universal test place, lamplit harsh requirement, and test result adopts the expression that quantizes, more directly perceived, easier judgement.
Be understandable that; for those of ordinary skills; can be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, and all these changes or replacement all should belong to the protection domain of the appended claim of the utility model.
Claims (8)
1. a device that is used to detect relay lens is characterized in that, comprising:
Worktable,
Being arranged on being used on the described worktable places the relay lens pedestal of relay lens,
Be successively set on detector lens, relay lens pedestal and scaling board on the same linear position of described worktable,
First distance adjusting mechanism that is used to regulate distance between detector lens and the scaling board that is connected with described detector lens and described scaling board respectively,
The second distance governor motion that is used to regulate distance between detector lens and the relay lens pedestal that is connected with described detector lens and described relay lens pedestal respectively,
The imageing sensor that is used for obtaining the image information of described scaling board that is connected with described detector lens by described detector lens,
And being used for of being connected with described imageing sensor central processing unit that image information is handled.
2. the device that is used to detect relay lens according to claim 1 is characterized in that, also is provided with first electronic distance measuring instrument that is used to measure distance between detector lens and the scaling board on described first distance adjusting mechanism.
3. the device that is used to detect relay lens according to claim 1 is characterized in that, also is provided with second electronic distance measuring instrument that is used to measure distance between detector lens and the relay lens pedestal on the described second distance governor motion.
4. the device that is used to detect relay lens according to claim 1 is characterized in that, described imageing sensor is ccd image sensor or cmos image sensor.
5. the device that is used to detect relay lens according to claim 4 is characterized in that, also is provided with a contrast unit in the described central processing unit.
6. the device that is used to detect relay lens according to claim 1 is characterized in that, also is provided with a backlight on the described worktable, and described detector lens, relay lens pedestal, scaling board and backlight set gradually.
7. the device that is used to detect relay lens according to claim 1 is characterized in that, also comprises a display screen, and described display screen connects described central processing unit.
8. the device that is used to detect relay lens according to claim 1 is characterized in that, described worktable is an optical bench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320063729 CN203101029U (en) | 2013-02-01 | 2013-02-01 | Device for detecting relay lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320063729 CN203101029U (en) | 2013-02-01 | 2013-02-01 | Device for detecting relay lens |
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| Publication Number | Publication Date |
|---|---|
| CN203101029U true CN203101029U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320063729 Expired - Fee Related CN203101029U (en) | 2013-02-01 | 2013-02-01 | Device for detecting relay lens |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830991A (en) * | 2017-11-24 | 2018-03-23 | 中山依瓦塔光学有限公司 | Quick mounting platform applied to Shot Detection |
| CN110274752A (en) * | 2018-03-14 | 2019-09-24 | 深圳市隆测技术有限公司 | The Multifunctional test card and its test method of relay lens image quality |
-
2013
- 2013-02-01 CN CN 201320063729 patent/CN203101029U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830991A (en) * | 2017-11-24 | 2018-03-23 | 中山依瓦塔光学有限公司 | Quick mounting platform applied to Shot Detection |
| CN110274752A (en) * | 2018-03-14 | 2019-09-24 | 深圳市隆测技术有限公司 | The Multifunctional test card and its test method of relay lens image quality |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN KERUI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: COLIBRI AUTOMATION (SHENZHEN) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518057, Guangdong Province, Nanshan District province Shenzhen hi tech Zone, seven industrial district, sparrows first floor Patentee after: SHENZHEN COLIBRI TECHNOLOGIES Co.,Ltd. Address before: 518057, Guangdong Province, Nanshan District province Shenzhen hi tech Zone, seven industrial district, sparrows first floor Patentee before: Colibri Automation (Shenzhen) Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20220201 |