CN203590363U - Night vision device - Google Patents
Night vision device Download PDFInfo
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- CN203590363U CN203590363U CN201320764848.2U CN201320764848U CN203590363U CN 203590363 U CN203590363 U CN 203590363U CN 201320764848 U CN201320764848 U CN 201320764848U CN 203590363 U CN203590363 U CN 203590363U
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Abstract
The utility model discloses a night vision device. The night vision device comprises a signal acquisition module, a signal conversion module, a silicon-based liquid crystal driver module, a silicon-based liquid crystal display module, and an optical imaging module which are sequentially connected. The signal acquisition module collect an environment signal and transmit the environment signal to the signal conversion module; the signal conversion module receives and converts the environment signal into a serial digital signal; the silicon-based liquid crystal driver module receives and converts the serial digital signal into a parallel RGB digital signal so as to drive the silicon-based liquid crystal display module; and at the same time, the silicon-based liquid crystal display module receives light from the optical imaging module for displaying. The silicon-based liquid crystal display module is used for displaying, so that the small size and high resolution ratio are realized.
Description
Technical field
The utility model relates to display unit at night field, particularly relates to a kind of night vision device.
Background technology
Night vision device is gunsight outside the night take image intensifier as core devices, during its work, without infrared searchlight illumination target, and utilize the lower target of faint light photograph institute reflection ray to strengthen the visual picture that can experience for human eye by image intensifier on phosphor screen, observe and run-home.
Traditional night vision device uses liquid crystal (Liquid Crystal Display, LCD) display screen to carry out image display.But while using high-resolution color LCD display screen to show, the size of display screen is bigger than normal; While using the little color LCD display screen of size to show, resolution is lower.While using black and white LCD display to show, resolution is lower, granular sensation is strong, image border sawtooth is serious.
Utility model content
Based on this, be necessary the problems such as bigger than normal for the size of using the generation that shows of LCD display, resolution is low and image effect is poor, a kind of night vision device addressing the above problem is provided.
A kind of night vision device, comprises signal acquisition module, signal conversion module, also comprises liquid crystal on silicon driver module, liquid crystal on silicon display module and optical imagery module;
Described signal acquisition module, described signal conversion module, described liquid crystal on silicon driver module, described liquid crystal on silicon display module and described optical imagery module are connected successively.
In an embodiment, described signal acquisition module comprises the image sensing cell and the image analoging signal processing unit that are connected therein, and described image analoging signal processing unit connects described signal conversion module.
In an embodiment, described image sensing cell is ccd image sensor or cmos image sensor therein.
In an embodiment, described signal acquisition module also comprises infrared lamp driver element and the highlighted infrared lamp unit of connection therein, and the invisible infrared light of described image sensing cell identification is launched in highlighted infrared lamp unit described in described infrared lamp drive unit drives.
In an embodiment, described signal conversion module comprises signal conversion unit, encoding and decoding processing unit and memory cell therein, and described signal conversion unit connects described signal acquisition module, and described encoding and decoding processing unit connects described liquid crystal on silicon driver module.
In an embodiment, described liquid crystal on silicon driver module is CPLD or Field Programmable Gate Array therein.
In an embodiment, described liquid crystal on silicon display module is color sequential liquid crystal on silicon module or color filter film liquid crystal on silicon module therein.
Therein in an embodiment, when described liquid crystal on silicon display module is color sequential liquid crystal on silicon module, described liquid crystal on silicon driver module also comprises synchronous DRAM, and described synchronous DRAM connects described CPLD or Field Programmable Gate Array.
In an embodiment, described optical imagery module comprises light source, light splitting light modulation unit and optical amplifier image-generating unit therein; Described light source emitting parallel light is also injected described light splitting light modulation unit, described light splitting light modulation unit divides light modulation to obtain P polarised light to described directional light, optical amplifier image-generating unit described in described P polarised light directive, described optical amplifier image-generating unit described P polarised light is amplified and make amplify after P polarised light directive described in liquid crystal on silicon display module.
In an embodiment, described light splitting light modulation unit comprises point light reflection element and light modulation element therein.
Above-mentioned night vision device, comprises the signal acquisition module, signal conversion module, liquid crystal on silicon driver module, liquid crystal on silicon display module and the optical imagery module that connect successively.Described signal acquisition module gathers ambient signal and is transferred to signal conversion module, described signal conversion module receives and above-mentioned ambient signal is converted to serial digital signal, described liquid crystal on silicon driver module receives and converts described serial digital signal to parallel RGB digital signal and drives liquid crystal on silicon display module, meanwhile, the light that described liquid crystal on silicon display module receives described optical imagery module shows.By using liquid crystal on silicon display module to show, the problems such as size is little, resolution is high, and while having avoided using high-resolution color LCD display screen to show, the size of display screen is bigger than normal, resolution is lower while using size little color LCD display screen to show, resolution is lower while using black and white LCD display to show, granular sensation strong, image border sawtooth is serious.
Accompanying drawing explanation
Fig. 1 is the night vision device module diagram of an embodiment;
Fig. 2 is the night vision device module diagram of another embodiment.
Embodiment
A kind of night vision device, by using liquid crystal on silicon display module to show, size is little and resolution is higher, avoided using high-resolution color LCD display screen to show, the size of display screen is bigger than normal, use the little color LCD display screen of size to show, the problems such as resolution is lower to be shown with use black and white LCD display, and resolution is lower, granular sensation is strong, image border sawtooth is serious.
Below in conjunction with drawings and Examples, a kind of night vision device of the utility model is described in more detail.
Shown in Fig. 1, it is the night vision device module diagram of an embodiment.With reference to figure 1, a kind of night vision device 100, comprises the signal acquisition module 120, signal conversion module 140, liquid crystal on silicon driver module 160, liquid crystal on silicon display module 180 and the optical imagery module 190 that connect successively.Signal acquisition module 120 gathers environmental simulation signal and above-mentioned environmental simulation signal is converted to composite video broadcast singal and is transferred to above-mentioned signal conversion module 140, signal conversion module 140 converts above-mentioned composite video broadcast singal 8 bit-serial digital signals to and is transferred to liquid crystal on silicon driver module 160, liquid crystal on silicon driver module 160 receives and converts above-mentioned 8 bit-serial digital signals to 18 parallel-by-bit RGB digital signals and drives liquid crystal on silicon display module 180, and the light that liquid crystal on silicon display module 180 receives the projection of above-mentioned optical imagery module 190 shows.
By using liquid crystal on silicon display module 180 to show, size is little and resolution is high, has avoided using high-resolution color LCD display screen to show, the size of display screen is bigger than normal; Use the little color LCD display screen of size to show, resolution is lower; Use the problems such as black and white LCD display shows, resolution is lower, granular sensation is strong, image border sawtooth is serious.
Liquid crystal on silicon, is also named liquid crystal attached silicon, i.e. LCOS(Liquid Crystal On Silicon, LCOS).Liquid crystal on silicon is a kind of based on reflective-mode, matrix liquid crystal display device that size is very little.Above-mentioned matrix adopts complementary metal oxide semiconductors (CMOS) (Complementary Metal Oxide Semiconductor, CMOS) technology processing and fabricating on silicon to form.The size of pixel is from 7 microns to 20 microns, and for the resolution of mega pixel, above-mentioned matrix liquid crystal display device is less than 1 inch conventionally.The LCD LCDs volume minimum of penetration can only be accomplished 1.70 inches, and LCOS display screen can be accomplished 0.28 inch, and the size of corresponding optical instrument is also dwindled greatly, has reduced the production cost of whole optical instrument.
LCOS Display Technique is because its light is not through liquid crystal display (Liquid Crystal Display, LCD) panel, but employing reflection mode shows image, therefore light utilization ratio can reach 40%.Compared with other shadow casting techniques, the advantage of LCOS technology maximum is that resolution is high, with penetrating LCD and digital light processing (Digital Light Procession, DLP) technology is compared, LCOS has that the optical efficiency of utilization is high, volume is little, aperture opening ratio high, and it can realize high-resolution and color representation fully easily.
LED Display Technique is that penetration shows, larger to human eye injury when nearly eye shows, such as eyes can be dry and astringent, having worn for a long time can dizziness, be not suitable for wearing for a long time; And owing to there is the problem of heat radiation, have heat-flash and produce, user's eyes are burnt.And LCOS display screen adopts reflective demonstration, compared to the LED display that adopts penetration, little to human eye injury when nearly eye shows, display effect is good.The above-mentioned portable display synchronization device of shooting with video-corder can be applicable to automobile, glasses or other portable carriers, in trip or some, needs record or the timely occasion of playing in time.
Shown in Fig. 2, it is the night vision device module diagram of another embodiment.
With reference to figure 2, above-mentioned signal acquisition module 120 comprises the image sensing cell 122 and the image analoging signal processing unit 124 that are connected, and image analoging signal processing unit 124 connects signal conversion module 140.Image sensing cell 122 obtains environmental simulation signal and described environmental simulation signal is transferred to image analoging signal processing unit 124, and image analoging signal processing unit 124 converts above-mentioned environmental simulation signal composite video broadcast singal to and is transferred to signal conversion module 140.
Concrete, above-mentioned image sensing cell 122 is ccd image sensor, i.e. CCD(Charge-coupled Device, CCD) imageing sensor or cmos image sensor, i.e. cmos sensor.CCD, English full name: Charge-coupled Device, Chinese full name: charge coupled cell.Can be called ccd image sensor.CCD is a kind of semiconductor device, optical image can be converted into digital signal.The environmental simulation signal that above-mentioned ccd image sensor or COMS blit image sensor send above-mentioned image sensing cell 122 is converted to composite video broadcast singal and sends to above-mentioned signal conversion module 140.
Further, with reference to figure 2, above-mentioned night vision device 100 also comprises infrared lamp driver element 126 and the highlighted infrared lamp unit 128 of connection.Infrared lamp driver element 126 drives highlighted infrared lamp unit 128 to launch the invisible infrared light that image sensing cell 122 can be identified, and realizes the collection of carrying out image/video night.Concrete, the invisible infrared light that above-mentioned highlighted infrared lamp unit 128 is launched is the invisible infrared lights of naked eyes.
With reference to figure 2, above-mentioned signal conversion module 140 comprises the signal conversion unit 142, encoding and decoding processing unit 144 and the memory cell 146 that are connected, signal conversion unit 142 connects signal acquisition module 120, and encoding and decoding processing unit 144 connects liquid crystal on silicon driver module 160.Signal conversion unit 142 converts composite video broadcast singal to 8 parallel-by-bit digital signals, encoding and decoding processing unit 144 receives and above-mentioned 8 parallel-by-bit digital signals is converted to 8 bit-serial digital signals and sends to liquid crystal on silicon driver module 160, above-mentioned encoding and decoding processing unit 144 becomes audio-video document by above-mentioned 8 parallel-by-bit digital signal encoding and decoding simultaneously simultaneously, and stores by said memory cells 146.Concrete, above-mentioned audio-video document is the audio-video document of the forms such as WAV, MP3, MP4, AVI.
Concrete above-mentioned liquid crystal on silicon driver module 160 is CPLD or Field Programmable Gate Array, CPLD or Field Programmable Gate Array convert above-mentioned 8 bit-serial digital signals to 18 parallel-by-bit RGB digital signals, and produce driving sequential driving liquid crystal on silicon display module 180 simultaneously.CPLD is converted to parallel video digital signal by serial video digital signal, and generation simultaneously drives sequential to drive liquid crystal on silicon display module 180 to show.CPLD (Complex Programmable Logic Device, CPLD) scale is large, complex structure, belongs to large scale integrated circuit scope, be a kind of user according to needing separately the digital integrated circuit of constitutive logic function voluntarily.
Concrete, above-mentioned liquid crystal on silicon display module 180 can be 0.28 inch of LCOS CS(Liquid Crystal on Silicon Color Sequential) display screen, resolution 320*240.In another embodiment, above-mentioned liquid crystal on silicon display module 180 also can be LOCS CF(Liquid Crystal on Silicon Color Filter, the CF that resolution is 640*480) display screen.
When above-mentioned liquid crystal on silicon display module 180 is color sequential liquid crystal on silicon module, above-mentioned liquid crystal on silicon driver module 160 also comprises synchronous DRAM (not shown), synchronous DRAM connects CPLD or Field Programmable Gate Array, for driving color sequential liquid crystal on silicon module to show together with CPLD or Field Programmable Gate Array.
Concrete, with reference to figure 2, above-mentioned optical imagery module 190 comprises light source 192, light splitting light modulation unit 194 and optical amplifier image-generating unit 196.Above-mentioned light source 192 emitting parallel lights are also injected light splitting light modulation unit 194, light splitting light modulation unit 194 divides light modulation to obtain P polarised light to directional light, above-mentioned P polarised light directive optical amplifier image-generating unit 196, optical amplifier image-generating unit described P polarised light is amplified and make amplify after P polarised light directive liquid crystal on silicon display module 180.
Concrete, above-mentioned optical imagery module 190 is polarization splitting prism (Polarizing Beam Splitter, PBS), the non-polarized light of incident can be divided into the line polarisation that two bundles are vertical.Wherein P polarisation passes through completely, and S polarisation is reflected with miter angle, and exit direction becomes an angle of 90 degrees with P light.Concrete, above-mentioned polarization splitting prism is formed by a pair of high accuracy right-angle prism gummed, is coated with polarization spectro deielectric-coating on the hypotenuse of one of them prism, cemented surface plating PBS film, all right angles face plating anti-reflection film.
With reference to figure 2, above-mentioned light splitting light modulation unit 194 comprises point light reflection element 1942 and light modulation element 1944, divide light reflection element 1942 to receive the directional light that light source 192 is launched, make the P polarised light in directional light see through and make S polarised light to become 90 degree directions to reflect to light modulation element 1944 with above-mentioned directional light, light modulation element 1944 is modulated into S polarised light P polarised light and the P polarised light after modulation is reflected back to above-mentioned point of light reflection element 1942, and P polarised light is through point light reflection element 1942 directive optical amplifier image-generating units 196.
Optical amplifier image-generating unit 196 forms by organizing optical mirror slip more, carries out amplification imaging after receiving above-mentioned P polarised light, and the image directive liquid crystal on silicon display module 180 after forming image after amplifying and also making to amplify carries out image demonstration.
Concrete, above-mentioned encoding and decoding processing unit 144 can be NT96632 chip, A10S chip or A20 chip etc.Above-mentioned NT96632 chip, A10S chip or A20 chip comprise memory function, now can omit memory cell 146, complete the storage of audio-video document by said chip.
Concrete, said memory cells 146 can be Flash, TF Card, SDRAM etc.
Further, above-mentioned night vision device also comprises power module (not shown), above-mentioned power module connects respectively above-mentioned signal acquisition module 120, signal conversion module 140, liquid crystal on silicon driver module 160, liquid crystal on silicon display module 180 and above-mentioned optical imagery module 190, for powering to above-mentioned modules.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. a night vision device, comprises signal acquisition module, signal conversion module, it is characterized in that, also comprises liquid crystal on silicon driver module, liquid crystal on silicon display module and optical imagery module;
Described signal acquisition module, described signal conversion module, described liquid crystal on silicon driver module, described liquid crystal on silicon display module and described optical imagery module are connected successively.
2. night vision device according to claim 1, is characterized in that, described signal acquisition module comprises the image sensing cell and the image analoging signal processing unit that are connected, and described image analoging signal processing unit connects described signal conversion module.
3. night vision device according to claim 2, is characterized in that, described image sensing cell is ccd image sensor or cmos image sensor.
4. night vision device according to claim 2, it is characterized in that, described signal acquisition module also comprises infrared lamp driver element and the highlighted infrared lamp unit of connection, and the invisible infrared light of described image sensing cell identification is launched in highlighted infrared lamp unit described in described infrared lamp drive unit drives.
5. night vision device according to claim 1, it is characterized in that, described signal conversion module comprises signal conversion unit, encoding and decoding processing unit and memory cell, and described signal conversion unit connects described signal acquisition module, and described encoding and decoding processing unit connects described liquid crystal on silicon driver module.
6. night vision device according to claim 1, is characterized in that, described liquid crystal on silicon driver module is CPLD or Field Programmable Gate Array.
7. night vision device according to claim 6, is characterized in that, described liquid crystal on silicon display module is color sequential liquid crystal on silicon module or color filter film liquid crystal on silicon module.
8. night vision device according to claim 7, it is characterized in that, when described liquid crystal on silicon display module is color sequential liquid crystal on silicon module, described liquid crystal on silicon driver module also comprises synchronous DRAM, and described synchronous DRAM connects described CPLD or Field Programmable Gate Array.
9. night vision device according to claim 1, is characterized in that, described optical imagery module comprises light source, light splitting light modulation unit and optical amplifier image-generating unit; Described light source emitting parallel light is also injected described light splitting light modulation unit, described light splitting light modulation unit divides light modulation to obtain P polarised light to described directional light, optical amplifier image-generating unit described in described P polarised light directive, described optical amplifier image-generating unit described P polarised light is amplified and make amplify after P polarised light directive described in liquid crystal on silicon display module.
10. night vision device according to claim 9, is characterized in that, described light splitting light modulation unit comprises point light reflection element and light modulation element.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044899A (en) * | 2015-08-29 | 2015-11-11 | 四川七彩光电科技有限公司 | Night vision device based on low light level imaging and implementation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044899A (en) * | 2015-08-29 | 2015-11-11 | 四川七彩光电科技有限公司 | Night vision device based on low light level imaging and implementation method thereof |
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