CN204995434U - Field of vision appearance luminance calibrating device - Google Patents
Field of vision appearance luminance calibrating device Download PDFInfo
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- CN204995434U CN204995434U CN201520630101.7U CN201520630101U CN204995434U CN 204995434 U CN204995434 U CN 204995434U CN 201520630101 U CN201520630101 U CN 201520630101U CN 204995434 U CN204995434 U CN 204995434U
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- receiving device
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- visual field
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Abstract
The utility model discloses a field of vision appearance luminance calibrating device. It is including throwing part, photic ware and focusing mechanism, be provided with projection light source on the transmission part, projection light source and speculum are on same straight line, it looks lamp and camera admittedly to be provided with in the middle of the photic ware, photic ware upper portion is provided with the background light, photic ware lower part is provided with the infrared lamp, focusing mechanism is in between projection light source and the speculum, photic ware bottom is connected with the removal chin rest, photic ware, transmitted light source, look lamp, camera and infrared lamp admittedly and all be connected with control circuit. The utility model provides a field of vision appearance luminance calibrating device, simple structure, calibration efficiency and precision are high, easy operation.
Description
Technical field
This utility model relates to visual field instrument brightness calibration device, belongs to medical instruments field.
Background technology
Visual field instrument is used to a kind of important Medical Instruments of monitoring the human eye visual field, it detects the visual field of patient by the position and light intensity being distributed in the stimulation point in dome-type screen by random order conversion, be widely used in glaucoma, eye hypertension, pigment dispersion syndrome, the perimetry of the multiple ophthalmic diseases such as false exofoliation syndrome, also be the important means of neurosurgery for nervous system disease early diagnosis, being admitted to of professional driver's driving license abroad, the health check-up of pilot, it is all important indicator that the visual field is detected.
Full automatic visual field instrment measures the visual function of different parts in the visual field, criterion is liminal contrast mainly, namely the difference between the brightness of test-object and stimulation point and background illumination brightness can just be found, the position of stimulation point in the visual field, size, illumination level is the key factor affecting testing result, and at present the optical stimulation product-derived of Automatic Perimeter exists aging and affect visual field instrument accuracy of detection, such as the startup self-detection of Switzerland Octopus of existing main flow Full automatic visual field instrment just passes through the whole strength range of light cell detection computations for stimulating light source.
But there is complex structure in existing visual field instrument brightness calibration device, calibration efficiency and precision low, the shortcoming of complicated operation.
Summary of the invention
In view of this, this utility model provides visual field instrument brightness calibration device, and structure is simple, calibration efficiency and precision high, simple to operate.
This utility model is solved the problems of the technologies described above by following technological means:
Visual field instrument brightness calibration device of the present utility model, comprise projection parts, light-receiving device and focus adjusting mechanism, described transmitting member is provided with projection source, described projection source and reflecting mirror are on the same line, fixation lamp and photographic head is provided with in the middle of described light-receiving device, described light-receiving device top is provided with background light, described light-receiving device bottom is provided with infrared lamp, described focus adjusting mechanism is between projection source and reflecting mirror, be connected with the mobile chin rest bottom described light-receiving device, described light-receiving device, transmitted light source, fixation lamp, photographic head is all connected with control circuit with infrared lamp.
Further, described projection parts are provided with projection eyeglass, transmitted ray is transmitted on light-receiving device by projection eyeglass.
Further, described control circuit is provided with numerical-control constant-pressure source and digital to analog converter.
Further, described light-receiving device is hemispherical dome structure.
The beneficial effects of the utility model: visual field instrument brightness calibration device of the present utility model, structure is simple, calibration efficiency and precision high, simple to operate.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further described.
Fig. 1 is structural representation of the present utility model,
Fig. 2 is fundamental diagram of the present utility model.
In figure: 1, project parts, 2, light-receiving device, 3, focus adjusting mechanism, 4, projection source, 5, reflecting mirror, 6, fixation lamp, 7, photographic head, 8, background light, 9, infrared lamp, 10, the mobile chin rest, 11, control circuit.
Detailed description of the invention
Below with reference to accompanying drawing, this utility model is described in detail, as shown in Figure 1: the visual field instrument brightness calibration device of the present embodiment, comprise projection parts 1, light-receiving device 2 and focus adjusting mechanism 3, described transmitting member 1 is provided with projection source 4, described projection source 4 and reflecting mirror 5 are on the same line, fixation lamp 6 and photographic head 7 is provided with in the middle of described light-receiving device 2, described light-receiving device 2 top is provided with background light 8, described light-receiving device 2 bottom is provided with infrared lamp 9, described focus adjusting mechanism 3 is between projection source 4 and reflecting mirror 5, be connected with the mobile chin rest 10 bottom described light-receiving device 2, described light-receiving device 2, transmitted light source 4, fixation lamp 6, photographic head 7 is all connected with control circuit 11 with infrared lamp 9.
As the further improvement of technique scheme, described projection parts 1 are provided with projection eyeglass 12, transmitted ray is transmitted on light-receiving device 2 by projection eyeglass 12.
As the further improvement of technique scheme, described control circuit 11 is provided with numerical-control constant-pressure source and digital to analog converter.
As the further improvement of technique scheme, described light-receiving device 2 is hemispherical dome structure.
As shown in Figure 2, during use, Microcomputer control numerical-control constant-pressure source, numerical-control constant-pressure source controls transmitted light source 4, projection source 4 and reflecting mirror 5 are on the same line, the light of transmitted light source 4 reflects through reflecting mirror 5, then enter on projection eyeglass 12, projection source projects on light-receiving device 2 by projection eyeglass 12, light-receiving device 2 is connected with the digital to analog converter on control circuit 11, optical signal can be changed into the signal of telecommunication, the signal of telecommunication is through microcomputer, thus realize the calibration of brightness, the input of the signal of calibration is carried out data storing by microcomputer simultaneously, preserve calibration result.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail this utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (4)
1. visual field instrument brightness calibration device, it is characterized in that: comprise projection parts (1), light-receiving device (2) and focus adjusting mechanism (3), described projection parts (1) are provided with projection source (4), described projection source (4) and reflecting mirror (5) are on the same line, fixation lamp (6) and photographic head (7) is provided with in the middle of described light-receiving device (2), described light-receiving device (2) top is provided with background light (8), described light-receiving device (2) bottom is provided with infrared lamp (9), described focus adjusting mechanism (3) is between projection source (4) and reflecting mirror (5), described light-receiving device (2) bottom is connected with the mobile chin rest (10), described light-receiving device (2), transmitted light source (4), fixation lamp (6), photographic head (7) is all connected with control circuit (11) with infrared lamp (9).
2. visual field instrument brightness calibration device according to claim 1, is characterized in that: described projection parts (1) are provided with projection eyeglass (12), and transmitted ray is transmitted on light-receiving device (2) by projection eyeglass (12).
3. visual field instrument brightness calibration device according to claim 1, is characterized in that: (11) are provided with digital to analog converter with described control circuit.
4. visual field instrument brightness calibration device according to claim 1, is characterized in that: described light-receiving device (2) is hemispherical dome structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520630101.7U CN204995434U (en) | 2015-08-20 | 2015-08-20 | Field of vision appearance luminance calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520630101.7U CN204995434U (en) | 2015-08-20 | 2015-08-20 | Field of vision appearance luminance calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204995434U true CN204995434U (en) | 2016-01-27 |
Family
ID=55152345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520630101.7U Expired - Fee Related CN204995434U (en) | 2015-08-20 | 2015-08-20 | Field of vision appearance luminance calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204995434U (en) |
-
2015
- 2015-08-20 CN CN201520630101.7U patent/CN204995434U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20160820 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |