CN202191271U - Night eyesight testing device - Google Patents
Night eyesight testing device Download PDFInfo
- Publication number
- CN202191271U CN202191271U CN2011202458711U CN201120245871U CN202191271U CN 202191271 U CN202191271 U CN 202191271U CN 2011202458711 U CN2011202458711 U CN 2011202458711U CN 201120245871 U CN201120245871 U CN 201120245871U CN 202191271 U CN202191271 U CN 202191271U
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- night vision
- motherboard
- circuit control
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Abstract
The utility model provides a night eyesight testing device, which is characterized by comprising a body, an analog screen and darkroom unit, an illumination unit, an illumination circuit control circuit board, a motherboard and a switch. The analog screen and darkroom unit is arranged on the side surface of the body. The illumination unit arranged inside the body is placed corresponding to the positions of the eyes of an observer. The illumination circuit control circuit board and the motherboard are arranged inside the body. The illumination unit and the illumination circuit control circuit board are connected together through a lead. The motherboard and the illumination circuit control circuit board are connected together also through a lead. The switch is arranged on the external front panel of the body. The night eyesight testing device is simple in principle and structure, high in testing accuracy and wide in application range, which can be combined with other testing equipment so as to form a comprehensive detecting apparatus.
Description
Technical field
This utility model relates to electronic technology field, particularly a kind of night vision test set.
Background technology
Night vision is meant that human eye enters into the ability that dark surrounds recovers to distinguish object gradually suddenly under bright light environments, i.e. the process capability that changes from weak to strong of vision.In general, the people needed to adapt to basically in 3～6 minutes, can adapt to fully after 10～13 minutes.Detection meaning to this project in the driving adaptability testing is mainly reflected in: at high-speed running automobile on light and shade road jumpy; Because vision can not adapt to immediately and be easy to produce the driving behavior that jeopardizes traffic safety, and then causes the generation of security incident; Especially driving at night or when coming in and going out the tunnel bridges and culverts, accident rate be apparently higher than daytime, and main cause is exactly that the transport information that obtains of noctovision can drop sharply to about 50% of information on daytime.
The ultimate principle that night vision detects is to let earlier examined driver's abundant light adaptation (being not less than 30sec) under bright illumination condition; And then (watch a vision value that receives the low-light illumination under the environment of briliancy 0.05～0.50Lx) attentively and be 0.2 C shape sighting target complete black; Confirm the direction of C shape sighting target opening; The simultaneous computer record is examined the driver and can be seen clearly the C shape sighting target opening direction needed time of moment fully; Being moment of occurring of C shape sighting target knows identification and confirms time of opening direction to the driver, is the metric of night vision.C shape sighting target intensity of illumination should be adjusted to suitable numerical value, to guarantee to be examined effective identification of driver.
At present, existing night vision test set, complex structure, function singleness.
The utility model content
The purpose of this utility model is for the simplified apparatus complexity, improves and detects the night vision precision, realizes the product miniaturization simultaneously, and the spy provides a kind of night vision test set.
This utility model provides a kind of night vision test set, it is characterized in that: described night vision test set comprises body 1, simulated screen and darkroom device 2; Illuminator 3; Lighting circuit control circuit board 4, motherboard 5, switch 6 are installed on body 1 exterior front panel;
Wherein: simulated screen and darkroom device 2 are installed in the side of body 1; Illuminator 3 is installed in the position of the corresponding observer's eyes in inside of body 1; Lighting circuit control circuit board 4 and motherboard 5 are installed in the inside of body 1; Illuminator 3 is connected with lighting circuit control circuit board 4 through lead, and motherboard 5 is connected with lighting circuit control circuit board 4 through lead.
Described illuminator 3 is a led light source.
Night vision comprises light adaptation and two processes of dark adaptation, and wherein its procedure of adaptation of light adaptation (when getting into bright light environments by dark state) is about about 1 minute.Adaptive time when getting into dark surrounds by bright state is relatively long, needs about 30 minutes, could arrive the best vision under the dark surrounds.Therefore, at present the detection method of night vision is mainly tended to test the height of dark adaptation ability, i.e. night vision, the key instrument of employing is the night vision detector.
Being examined the time that the driver correctly judges C shape sighting target opening direction in the simulated screen is the night vision value 1 time.
The advantage of this utility model:
The described night vision test set of this utility model, theory structure is simple, and the test accuracy rate is high, can be combined into comprehensive detecting instrument with other checkout equipment, has wide range of applications.
Description of drawings
Below in conjunction with accompanying drawing and embodiment this utility model is done further detailed explanation:
Fig. 1 is a night vision test set external structure sketch map;
Fig. 2 is the inner main functional modules sketch map of night vision test set.
The specific embodiment
Present embodiment provides a kind of night vision test set, it is characterized in that: described night vision test set comprises body 1, simulated screen and darkroom device 2; Illuminator 3; Lighting circuit control circuit board 4, motherboard 5, switch 6 are installed on body 1 exterior front panel;
Wherein: simulated screen and darkroom device 2 are installed in the side of body 1; Illuminator 3 is installed in the position of the corresponding observer's eyes in inside of body 1; Lighting circuit control circuit board 4 and motherboard 5 are installed in the inside of body 1; Illuminator 3 is connected with lighting circuit control circuit board 4 through lead, and motherboard 5 is connected with lighting circuit control circuit board 4 through lead.
Described illuminator 3 is a led light source.
Night vision comprises light adaptation and two processes of dark adaptation, and wherein its procedure of adaptation of light adaptation (when getting into bright light environments by dark state) is about about 1 minute.Adaptive time when getting into dark surrounds by bright state is relatively long, needs about 30 minutes, could arrive the best vision under the dark surrounds.Therefore, at present the detection method of night vision is mainly tended to test the height of dark adaptation ability, i.e. night vision, the key instrument of employing is the night vision detector.
Being examined the time that the driver correctly judges C shape sighting target opening direction in the simulated screen is the night vision value 1 time.
Claims (2)
1. night vision test set, it is characterized in that: described night vision test set comprises body (1), simulated screen and darkroom device (2), illuminator (3), lighting circuit control circuit board (4), motherboard (5), switch (6);
Wherein: simulated screen and darkroom device (2) are installed in the side of body (1); Illuminator (3) is installed in the position of the corresponding observer's eyes in inside of body (1); Lighting circuit control circuit board (4) and motherboard (5) are installed in the inside of body (1); Illuminator (3) is connected with lighting circuit control circuit board (4) through lead, and motherboard (5) is connected with lighting circuit control circuit board (4) through lead, and switch (6) is installed on body (1) exterior front panel.
2. according to the described night vision test set of claim 1, it is characterized in that: described illuminator (3) is a led light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202458711U CN202191271U (en) | 2011-07-13 | 2011-07-13 | Night eyesight testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202458711U CN202191271U (en) | 2011-07-13 | 2011-07-13 | Night eyesight testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202191271U true CN202191271U (en) | 2012-04-18 |
Family
ID=45946204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202458711U Expired - Fee Related CN202191271U (en) | 2011-07-13 | 2011-07-13 | Night eyesight testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202191271U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105125167A (en) * | 2015-08-21 | 2015-12-09 | 陶勇 | Ocular examination method and apparatus based on intelligent video collection and analysis |
| CN107252301A (en) * | 2017-05-24 | 2017-10-17 | 中国人民解放军第四军医大学 | Vision-based detection instrument for training under a kind of dim environment |
| CN111820858A (en) * | 2019-04-17 | 2020-10-27 | 昆明索弗拓科技有限公司 | Dark vision detection method, device, computing equipment and medium |
-
2011
- 2011-07-13 CN CN2011202458711U patent/CN202191271U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105125167A (en) * | 2015-08-21 | 2015-12-09 | 陶勇 | Ocular examination method and apparatus based on intelligent video collection and analysis |
| CN107252301A (en) * | 2017-05-24 | 2017-10-17 | 中国人民解放军第四军医大学 | Vision-based detection instrument for training under a kind of dim environment |
| CN107252301B (en) * | 2017-05-24 | 2018-12-18 | 中国人民解放军第四军医大学 | Vision-based detection instrument for training under a kind of dim environment |
| CN111820858A (en) * | 2019-04-17 | 2020-10-27 | 昆明索弗拓科技有限公司 | Dark vision detection method, device, computing equipment and medium |
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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: SHENYANG ZHENGDAO SAFETY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENYANG ZHENGDAO SAFETY INSPECTION TECHNOLOGY SERVICE CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Hunnan New Century Road 110179 Shenyang city of Liaoning Province, No. 22 4 floor Patentee after: SHENYANG ZHENGDAO SECURITY TECHNOLOGY CO., LTD. Address before: Friendly street in Shenhe District of Shenyang City, Liaoning province 110013 No. 19 Ginza Fengtian room A607 Patentee before: Shenyang Zhengdao Safety Inspection Technology Service Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20150713 |
|
| EXPY | Termination of patent right or utility model |