CN203673138U - Prism display system on encryption device - Google Patents
Prism display system on encryption device Download PDFInfo
- Publication number
- CN203673138U CN203673138U CN201320690610.XU CN201320690610U CN203673138U CN 203673138 U CN203673138 U CN 203673138U CN 201320690610 U CN201320690610 U CN 201320690610U CN 203673138 U CN203673138 U CN 203673138U
- Authority
- CN
- China
- Prior art keywords
- encryption device
- prism
- display screen
- password
- triple prism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a prism display system on an encryption device, and the system consists of an encryption device pedestal, a display screen disposed on the encryption device pedestal, a triple prism which is disposed before the display screen and is connected with an encryption device housing, and the encryption device housing. The system is characterized in that the display screen is installed on the encryption device pedestal; one surface (AB surface) of the triple prism is a curved surface or a spherical surface, and the other surface (AC surface) of the triple prism is polished roughly. The third surface (BC surface) of the triple prism is smooth. The triple prism is installed above the encryption device pedestal, above the display screen but not right above the display screen, and is fixedly connected through the encryption device housing. A space cabin in a certain size is disposed between the lower edge of the triple prism and the upper edge of the encryption device pedestal, thereby enabling a hand of a person to stretch into the space cabin for operating a password. According to the utility model, the triple prism is applied to a peep-proof display system, thereby enabling the password to be seen during the application of the encryption device only if an angle for seeing the password is suitable, and preventing the password from being stolen.
Description
Technical field
The utility model relates to the prism display system on a kind of encryption device, belongs to encryption device application.
Background technology
At present in productive life, level security on some encryption devices is general, and go to bank card or proof box password of society spied on and caused the phenomenon of property loss to happen occasionally, this peep-proof to encryption device is had higher requirement, and now also does not occur having the encryption device of higher peep-proof function.
Summary of the invention
The purpose of this utility model is to provide a kind of prism display system with higher peep-proof function, allows people in the time accessing to your password equipment, only in specific angle, just can see the input button of password and the password of input.
The technical solution of the utility model is: the prism display system on a kind of encryption device, by encryption device body base, be arranged on the display screen on body base, prism and the encryption device shell that display screen front is connected with encryption device shell forms; It is characterized in that described display screen installs on encryption device base; The AB face of described prism is curved surface or sphere, and AC face is through frosted processing, and BC face is smooth, and prism is arranged on the top of encryption device base, the oblique upper of display screen, and is fixedly connected with by encryption device shell; Between the coboundary of the lower limb of described prism and encryption device base, there is a certain amount of spatial bins, make people's hand can stretch into operator password in storehouse.
According to optical principle, light is injected from a side of prism, penetrate from another side, emergent ray will be to bottom surface (the 3rd side) deviation, the size of deflection angle and the refractive index of prism, the drift angle of prism is relevant with incident angle, and refractive index is an optical constant, it represents that light is in the time of Propagation, a kind of feature of medium to light.If the refractive index of prism is i, the length that BD is screen, BE is visual range, AB, BC, AC are respectively the prism three limit length of sides, θ
1, θ
3for angle of incidence of light, θ
2, θ
4for light refraction angle, L is visual image width, and F is refraction angle end points, and the size of ∠ ABC is β, and the size of ∠ ABD is γ.
Work as θ
4=0 ° time, corresponding incident angle is θ
11.
Work as θ
4when=β, corresponding incident angle is θ
12.
Work as θ
4=90 ° time, corresponding incident angle is θ
13.
Light path is reversible, works as θ
1≤ θ
11time, there is full transmitting at AB face in light, and now human eye be can't see screen; Work as θ
11≤ θ
1≤ θ
12, while only having γ < (90 °-β), human eye just can be seen screen BD, visual image width L=BCcos θ
1; Work as θ
12≤ θ
1≤ θ
13, human eye can be seen screen BD, visual image width L=BCcos θ
1.According to the refraction of this prism optics and total reflection principle, prism is applied in peep-proof display system of the present utility model, can allow people only be applicable to just seeing in the specific angle of people the password of input in the time of the equipment of accessing to your password, prevent that password is stolen.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is optical principle schematic diagram of the present utility model.
In figure: encryption device body base 1, display screen 2, prism 3, shell 4, spatial bins 5.
Embodiment
Be below the preferred embodiments of the utility model patent, therefore do not limit protection domain of the present utility model.
A prism display system on encryption device, by encryption device body base 1, be arranged on the display screen 2 on body base 1, prism 3 and the encryption device shell 4 that display screen 2 fronts are connected with encryption device shell 4 forms; Display screen 2 described in it is characterized in that is installed on encryption device base 1; Described prism 3 is for having one side (AB face) for curved surface or sphere, another side (AC face) is through frosted processing, the 3rd (BC face) is smooth, prism 3 is arranged on the top of encryption device base 1, the oblique upper of display screen 2, and be fixedly connected with by encryption device shell 4, curved surface or sphere (AB face) amplify the image showing in display screen; Between the coboundary of the lower limb of described prism 3 and encryption device base 1, there is a certain amount of spatial bins 5, make people's hand can stretch into operator password in storehouse.
The utlity model has following characteristics: according to the refraction of prism optics and total reflection principle, prism is applied in peep-proof display system of the present utility model, can allow people only be applicable to just seeing in the specific angle of people the password of input in the time of the equipment of accessing to your password, prevent that password is stolen.Meanwhile, the cost of prism is not high, easily makes, and is convenient to the spread of this technology.
Claims (1)
1. the prism display system on encryption device, by encryption device body base, be arranged on the display screen on body base, prism and the encryption device shell that display screen front is connected with encryption device shell forms; It is characterized in that described display screen installs on encryption device base; The AB face of described prism is curved surface or sphere, and AC face is through frosted processing, and BC face is smooth, and prism is arranged on the top of encryption device base, the oblique upper of display screen, and is fixedly connected with by encryption device shell; Between the coboundary of the lower limb of described prism and encryption device base, there is a certain amount of spatial bins, make people's hand can stretch into operator password in storehouse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690610.XU CN203673138U (en) | 2013-10-28 | 2013-10-28 | Prism display system on encryption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690610.XU CN203673138U (en) | 2013-10-28 | 2013-10-28 | Prism display system on encryption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203673138U true CN203673138U (en) | 2014-06-25 |
Family
ID=50969413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320690610.XU Expired - Fee Related CN203673138U (en) | 2013-10-28 | 2013-10-28 | Prism display system on encryption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203673138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474985A (en) * | 2020-04-10 | 2020-07-31 | 郑州铁路职业技术学院 | Inquiry device for hospital information sharing platform |
| CN114838462A (en) * | 2021-02-02 | 2022-08-02 | 广州联动万物科技有限公司 | Tracking display, air conditioner and tracking display control method |
-
2013
- 2013-10-28 CN CN201320690610.XU patent/CN203673138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111474985A (en) * | 2020-04-10 | 2020-07-31 | 郑州铁路职业技术学院 | Inquiry device for hospital information sharing platform |
| CN114838462A (en) * | 2021-02-02 | 2022-08-02 | 广州联动万物科技有限公司 | Tracking display, air conditioner and tracking display control method |
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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: 20140625 Termination date: 20151028 |
|
| EXPY | Termination of patent right or utility model |