CN2506978Y - Balance type light regulation mechanism for camera of photoelectric theodolite - Google Patents
Balance type light regulation mechanism for camera of photoelectric theodolite Download PDFInfo
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- CN2506978Y CN2506978Y CN 01251097 CN01251097U CN2506978Y CN 2506978 Y CN2506978 Y CN 2506978Y CN 01251097 CN01251097 CN 01251097 CN 01251097 U CN01251097 U CN 01251097U CN 2506978 Y CN2506978 Y CN 2506978Y
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Abstract
A balanced dimming framework for a photoelectric theodolite cinematograph belongs to a dimming framework in a photoelectric measurement technical field. The technical problem to be solved is to use a reasonable arrangement of metering elements to control an appropriate position for a variable density disk to obtain high definition film quality. The technical proposal is that a metering element is arranged respectively on the top and bottom ends with equal distance to the symmetrical center of the photograph window on the vertical line of the photograph window symmetrical center. The utility model consists of the variable density disk, the photograph window, the top and bottom metering elements, an image plane, an A/D conversion, a computer, a width modulated output, and an executive motor. The dimming device can obtain high definition photograph film under any background light conditions, and thus improving interpretation accuracy and measurement precision.
Description
(1) technical field
The utility model belongs to a kind of dimming mechanism in the photoelectric measurement technical field.
(2) background technology
Carry out in the tracking measurement process at electro-optic theodolite, need carry out photorecording,, improve the contrast of target, must carry out light modulation to bias light and handle bias light in order to obtain the photography photo of high definition to target.
Understand according to us, in the outfield experiments in conventional target range, photometry element on the light modulating device commonly used only is installed in a side of photography window, the light modulating device of 160 transits produced of Changchun Inst. of Optics and Fine Mechanics, Chinese Academy of Sciences for example, as depicted in figs. 1 and 2, form by plate of changing density 1, photography window 2, photometry element 3, image planes 4, A/D conversion 5, computing machine 6, accent wide (PWM) output 7, actuating motor 8.
This device is because photometry element is installed in a side of photography window, when electro-optic theodolite is taken, the position of target is when the bias light contrast is big, the first half such as background is a sky, when the latter half is the land or the water surface, target location as shown in Figure 3, because photometry element is in a side of window, can not react the homogeneous background of whole image planes, and make photometry deviation occur, the position of plate of changing density is unreasonable, film quality is descended, influence is to the interpretation and the measurement of target, in order to overcome above-mentioned shortcoming, the new dimming mechanism that a kind of photometry element of ad hoc meter rationally distributes.
(3) summary of the invention
The technical matters that solves is the correct position with the rational deployment control plate of changing density of photometry element, obtains the film quality of high definition.The technical scheme of technical solution problem is on the vertical vertical line by photography window symcenter, respectively is provided with the upper/lower terminal of the equidistant photography window of symcenter a photometry element is installed.
Detailed content of the present utility model is as shown in Figure 4 and Figure 5: by plate of changing density 9, photography window 10, up and down photometry element 11, image planes 12, A/D conversion 13, computing machine 14, transfer wide (PWM) output 15, actuating motor 16 to form.
On the direction of propagation of light, plate of changing density 9 places the place ahead of photography window 10, upper and lower two photometry elements 11 are installed on the vertical vertical line that passes through symcenter of photography window 10, and it is equidistant with symcenter, image planes 12 are positioned at the back of photography window 10, the output terminal of upper and lower two photometry elements 11 links to each other with A/D conversion 13, the output terminal of A/D conversion 13 links to each other with computing machine 14, the output terminal of computing machine 14 links to each other with transferring wide (PWM) output 15, transfer wide (PWM) output 15 to link to each other with actuating motor 16, the output terminal of actuating motor 16 links to each other with plate of changing density 9.
The principle of work explanation: the output of upper and lower two photometry elements send the calculating addition to average through the A/D conversion, computing machine is by the bias light illumination value after the balance, release is transferred the moving actuating motor of wide wavestrip to drag plate of changing density and is turned to suitable position, make by the satisfied exposure amount of selecting film of the bias light of plate of changing density, thereby make image planes obtain reasonable brightness value, guaranteed the film image quality on the image planes.
Good effect: the utility model makes electro-optic theodolite carry out in the photoelectric measurement process in the target range, under the condition of any bias light, can both obtain the second best in quality photographic film of high definition, the accuracy and the measuring accuracy of interpretation have been improved, make under the big condition of bias light contrast, well the phenomenon of imaging obtains satisfied solution.
(4) description of drawings
Fig. 1 is the structural representation of prior art, Fig. 2 is the photometry element installation site synoptic diagram of prior art, Fig. 3 is the synoptic diagram of electro-optic theodolite measurement target under the wide contrast condition of background, Fig. 4 is the synoptic diagram of upper and lower two photometry element installation sites of the present utility model, Fig. 5 is a structural representation of the present utility model, and Figure of abstract is also used Fig. 5.
(5) embodiment
The utility model adopts Fig. 4 and structure shown in Figure 5, plate of changing density 9 adopts the evenly optics plate of changing density of decay of 32 times of circles, the caliber size of photography window 10 can design as required, upper and lower two photometry elements 11 adopt highly sensitive phototriode, 12 PCL-818L A/D transition cards are adopted in A/D conversion 13, computing machine 14 adopts the PCA-6147 industrial computer, transfers wide (PWM) output 15 to adopt PCL-836 to transfer wide card, the 28S direct current generator that actuating motor 16 adopts Shanghai Electric Machine Plant to produce.
Claims (1)
1, the balanced type dimming mechanism of photoelectric theodolite camera based, be by plate of changing density, the photography window, photometry element, image planes, the A/D conversion, computing machine, transfer wide (PWM) output, actuating motor is formed, it is characterized in that on the direction of propagation of light, plate of changing density (9) places the place ahead of photography window (10), on, following two photometry elements (11) be installed in the photography window (10) the vertical vertical line that passes through symcenter on and equidistant with symcenter, image planes (12) are positioned at the back of photography window (10), on, the output terminal of following two photometry elements (11) links to each other with A/D conversion (13), the output terminal of A/D conversion (13) links to each other with computing machine (14), the output terminal of computing machine (14) links to each other with transferring wide (PWM) output (15), transfer wide (PWM) output (15) to link to each other with actuating motor (16), the output terminal of actuating motor (16) links to each other with plate of changing density (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251097 CN2506978Y (en) | 2001-10-19 | 2001-10-19 | Balance type light regulation mechanism for camera of photoelectric theodolite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251097 CN2506978Y (en) | 2001-10-19 | 2001-10-19 | Balance type light regulation mechanism for camera of photoelectric theodolite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2506978Y true CN2506978Y (en) | 2002-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01251097 Expired - Fee Related CN2506978Y (en) | 2001-10-19 | 2001-10-19 | Balance type light regulation mechanism for camera of photoelectric theodolite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2506978Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100405417C (en) * | 2005-09-30 | 2008-07-23 | 中国科学院长春光学精密机械与物理研究所 | Apparatus for applying fiber-optic telecommunication technology on photoelectric transit data telecommunication |
| CN100511073C (en) * | 2007-10-11 | 2009-07-08 | 中国科学院长春光学精密机械与物理研究所 | Density disc drive device of automatic light modulation system |
| CN107806855A (en) * | 2017-09-14 | 2018-03-16 | 中国科学院长春光学精密机械与物理研究所 | A kind of complex target source and electro-optic theodolite test of image quality system |
| CN112881996A (en) * | 2021-01-15 | 2021-06-01 | 中国科学院光电技术研究所 | Laser echo detection information processing system |
-
2001
- 2001-10-19 CN CN 01251097 patent/CN2506978Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100405417C (en) * | 2005-09-30 | 2008-07-23 | 中国科学院长春光学精密机械与物理研究所 | Apparatus for applying fiber-optic telecommunication technology on photoelectric transit data telecommunication |
| CN100511073C (en) * | 2007-10-11 | 2009-07-08 | 中国科学院长春光学精密机械与物理研究所 | Density disc drive device of automatic light modulation system |
| CN107806855A (en) * | 2017-09-14 | 2018-03-16 | 中国科学院长春光学精密机械与物理研究所 | A kind of complex target source and electro-optic theodolite test of image quality system |
| CN107806855B (en) * | 2017-09-14 | 2019-09-10 | 中国科学院长春光学精密机械与物理研究所 | A kind of complex target source and electro-optic theodolite test of image quality system |
| CN112881996A (en) * | 2021-01-15 | 2021-06-01 | 中国科学院光电技术研究所 | Laser echo detection information processing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |