1. An emergency evacuation guiding system for guiding people to run away in a building system as an accident occurs, comprising:
a detector system for detecting an accidents which is occurred in the building system;
an informing system for informing people that an accident occurs in the building system; the informing system including at least one transmitter for transmitting wireless signals; wherein when the detector detects that an accident occurs, the transmitter will emit signals to inform the accident to other people;
a receiving system for receiving wireless signals from the informing system so as to know the message about the occurring of an accident; the receiving system including at least one wireless receiver for detecting the strengths of the signals transmitted from the transmitter to the receiver,
a guiding system for guiding people to run away from an accident area to a safety place; the guiding system including the at least one transmitter of the informing system and at least one receiver of the receiving system; the guiding system guiding people run out of the accident area by using the strength of the received signal in the receiver.
2. The emergency evacuation guiding system as claimed in claim 1, wherein the receiver includes a detector for detecting the strengths of the signals transmitted from the transmitter to the receiver, a display for displaying the strengths of the signals, a speaker which emits sound according to the strengths of the signals; the larger the strength, the greater the strength of the signal; and a lighting device which can emit light to alert people.
3. The emergency evacuation guiding system as claimed in claim 1, wherein the guiding system further comprises a sound emitting system for guiding the people to go out of an accident area by sounds; as the transmitter emits informing signals to the receiver; the sound emitting system still actuate so as to emit sound to guide the people to run out from the accident area.
4. The emergency evacuation guiding system as claimed in claim 1, wherein the guiding system further comprises a lighting system which emits light to guide people to run out of the accident area.
5. The emergency evacuation guiding system as claimed in claim 4, wherein the lighting system has a plurality of lighting units; strong light is used to indicate a correct path and weak light indicates a wrong path.
6. The emergency evacuation guiding system as claimed in claim 1, wherein if there is more than one detector is used, they are installed to different locations for detecting the conditions of the respective area.
7. The emergency evacuation guiding system as claimed in claim 1, wherein the building system is one of a hotel, a hospital, a plant, a bus station, a train station, a museum, a cruise ship, a library, and public places.
8. The emergency evacuation guiding system as claimed in claim 1, wherein the transmitter further includes a signal processor and an antenna.
9. The emergency evacuation guiding system as claimed in claim 8 wherein the signal processor includes an oscillator.
10. The emergency evacuation guiding system as claimed in claim 8, wherein the transmitter further includes a modulator.
11. The emergency evacuation guiding system as claimed in claim 10, wherein the transmitter further includes a multiplexer.
12. The emergency evacuation guiding system as claimed in claim 11, wherein the transmitter further includes an encoder.
13. The emergency evacuation guiding system as claimed in claim 1, wherein the receiver includes:
a detector for detecting the strengths of the signals transmitted from the transmitter to the receiver,
a display for displaying the strengths of the signals;
a speaker which emits sound according to the strengths of the signals; and
a lighting device for emitting light to alert people to run away along a predetermined path.
14. The emergency evacuation guiding system as claimed in claim 1, wherein the receiver further includes a signal processor for processing the received signals from the transmitter and measuring the strengths of the receiving signals.
15. The emergency evacuation guiding system as claimed in claim 14, wherein the receiver further includes a demodulator.
16. The emergency evacuation guiding system as claimed in claim 15, wherein the receiver further includes a demultiplexer.
17. The emergency evacuation guiding system as claimed in claim 16, wherein the receiver further includes a decoder.
18. The emergency evacuation guiding system as claimed in claim 1, wherein the receiver is installed in one of a key, a flashlight, an oxygen mask, an indicator box, a TV controller and an emergency rescuing cloth used in a boat or a plane.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising an aperture stop, first, second, third, fourth, fifth and sixth lens elements, each of said first, second, third, fourth, fifth and sixth lens elements having refracting power, an object-side surface facing toward the object side and an image-side surface facing toward the image side and a central thickness defined along the optical axis, wherein:
said first lens element has positive refracting power, said image-side surface of said first lens comprises a convex portion in a vicinity of the optical axis;
said second lens element is constructed by plastic material;
said image-side surface of said third lens element comprises a convex portion in a vicinity of the optical axis;
said image-side surface of said fourth lens element comprises a convex portion in a vicinity of the optical axis;
said object-side surface of said fifth lens element comprises a concave portion in a vicinity of the optical axis;
said image-side surface of said sixth lens element which is constructed by plastic material comprises a concave portion in a vicinity of the optical axis;
the central thickness of said fourth lens element is represented by T4, an air gap between said fourth lens element and said fifth lens element along the optical axis is represented by G45, and T4 and G45 satisfy the equation: T4G45\u22662.8; said optical imaging lens comprises no other lenses having refracting power beyond said six lens element.
2. The optical imaging lens according to claim 1, wherein the central thickness of said second lens element is represented by T2, the central thickness of said third lens element is represented by T3, and T2 and T3 satisfy the equation:
T3T2\u22662.1.
3. The optical imaging lens according to claim 2, wherein an air gap between said fifth lens element and said sixth lens element along the optical axis is represented by G56, and T4 and G56 satisfy the equation:
T4G56\u22669.1.
4. The optical imaging lens according to claim 2, wherein a sum of the central thicknesses of all six lens elements is represented by ALT, an air gap between said fifth lens element and said sixth lens element along the optical axis is represented by G56, and ALT and G56 satisfy the equation:
ALTG56\u226690.
5. The optical imaging lens according to claim 1, wherein the central thickness of said first lens element is represented by T1, an air gap between said fifth lens element and said sixth lens element along the optical axis is represented by G56, and T1 and G56 satisfy the equation:
T1G56\u226620.5.
6. The optical imaging lens according to claim 5, wherein the central thickness of said third lens element is represented by T3, the central thickness of said sixth lens element is represented by T6, and T3 and T6 satisfy the equation:
T3T6\u22661.22.
7. The optical imaging lens according to claim 1, wherein the central thickness of said third lens element is represented by T3, an air gap between said third lens element and said fourth lens element along the optical axis is represented by G34, and T4 and G34 satisfy the equation:
T3G34\u22665.5.
8. The optical imaging lens according to claim 7, wherein an effective focal length of said optical imaging lens is represented by EFL, an air gap between said fifth lens element and said sixth lens element along the optical axis is represented by G56, and EFL and G56 satisfy the equation:
EFLG56\u2266150.
9. The optical imaging lens according to claim 7, wherein an air gap between said second lens element and said third lens element along the optical axis is represented by G23, an air gap between said fifth lens element and said sixth lens element along the optical axis is represented by G56, and G23 and G56 satisfy the equation:
G23G56\u226610.
10. The optical imaging lens according to claim 1, wherein the central thickness of said third lens element is represented by T3, an air gap between said fifth lens element and said sixth lens element along the optical axis is represented by G56, and T3 and G56 satisfy the equation:
T3G56\u226610.
11. The optical imaging lens according to claim 10, wherein the central thickness of said first lens element is represented by T1, an air gap between said third lens element and said fourth lens element along the optical axis is represented by G34, and T1 and G34 satisfy the equation:
T1G34\u22665.0.
12. The optical imaging lens according to claim 1, wherein the central thickness of said fifth lens element is represented by T5, and T4 and G45 satisfy the equation:
G45T5\u22661.4.
13. The optical imaging lens according to claim 12, wherein an air gap between said third lens element and said fourth lens element along the optical axis is represented by G34, and T4 and G34 satisfy the equation:
T4G34\u22662.8.
14. The optical imaging lens according to claim 1, wherein a back focal length of said optical imaging lens, which is defined as the distance from the image-side surface of said sixth lens element to the image plane along the optical axis and represented by BFL, and BFL and T4 satisfy the equation:
BFLT4\u22665.5.
15. The optical imaging lens according to claim 14, wherein the central thickness of said fifth lens element is represented by T5, an air gap between said third lens element and said fourth lens element along the optical axis is represented by G34, and T5 and G34 satisfy the equation:
T5G34\u22665.
16. The optical imaging lens according to claim 1, wherein an air gap between said second lens element and said third lens element along the optical axis is represented by G23, the central thickness of said second lens element is represented by T2, and G23 and T2 satisfy the equation:
G23T2\u22661.24.
17. The optical imaging lens according to claim 1, wherein an air gap between said second lens element and said third lens element along the optical axis is represented by G23, an air gap between said third lens element and said fourth lens element along the optical axis is represented by G34, and G23 and G34 satisfy the equation:
G23G34\u22662.3.
18. The optical imaging lens according to claim 1, wherein an effective focal length of said optical imaging lens is represented by EFL, an air gap between said third lens element and said fourth lens element along the optical axis is represented by G34, and EFL and G34 satisfy the equation:
EFLG34\u226630.
19. The optical imaging lens according to claim 1, wherein a sum of the central thicknesses of all six lens elements is represented by ALT, an air gap between said third lens element and said fourth lens element along the optical axis is represented by G34, and ALT and G34 satisfy the equation:
ALTG34\u226618.
20. A mobile device, comprising:
a housing; and
a photography module positioned in said housing and comprising:
an optical imaging lens according to any one of claim 1;
a lens barrel for positioning said optical imaging lens;
a module housing unit for positioning said lens barrel; and
an image sensor positioned at the image side of said optical imaging lens.