An Achromatic Lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration. Achromatic lenses are corrected to bring two wavelengths (typically red and blue) into focus in the same plane.
The most common type of achromat is the achromatic doublet, which is composed of two individual lenses made fromglasses with different amounts of dispersion. Typically, one element is a negative (concave) element made out of flint glasssuch as F2, which has relatively high dispersion, and the other is a positive (convex) element made of crown glass such as BK7, which has lower dispersion. The lens elements are mounted next to each other, often cemented together, and shaped so that the chromatic aberration of one is counterbalanced by that of the other.
In the most common type (shown), the positive power of the crown lens element is not quite equalled by the negative power of the flint lens element. Together they form a weak positive lens that will bring two different wavelengths of light to a common focus. Negative doublets, in which the negative-power element predominates, are also made.
Achromatic Lens Achromatic Lens,Achromatic Objective Lens,Achromatic Condenser Lens, Achromatic Doublet Lenses Changchun Ruiqi Optoelectronics Co.,Ltd , http://www.ruiqi-optics.com
It is a multi-channel metal detector with eight overlapping detection zones.
With overlapping construction, sensitivity differences are minimized when metal objects of different shape pass through the WTMD in various orientations.
Functions:
Utilizing 6 inch high light LCD to show the adjusting of parameter, the number of people crossing and the times of bell ringing.
It can be operated with menus in both Chinese and English, easy and convenient.
Operating in large temperature range.
Putting DSP super hybrid engine inside, storing detecting sensitivity procedures recommended by several kinds of place, including electric industry, airport check, prison and courthouse, convenient and fast to use.
Divided into 8 overlapped reticulate detecting areas according to the fundamental structure of people's body.
Adopting the single incentive frequency technology and forming the symmetrical density of upright magnetic field in the detecting areas.
High penetration and sensitivity, avoiding the weak / blind zone of detecting areas.
Adopting external infrared scanning from double sides in order to promptly catch the signal.
High speed of reset for the large number of the passenger flow detecting (60-70 person / min, the number could increase in the non-alarming mode).
Calculating the number of passenger who walking through and into the door accurately.
Installing color lights on the gateposts of 4 sides to reveal the alarm-ringing district, which is quite straightforward and could reach all angles of view.
Divided into 8 overlapped reticulate detecting areas according to the fundamental structure of people's body.
Each detecting area bears 100 sensitivity adjusting programs of stages in which specific parameters could be set according to the actual application situation.
Without considering the influence of buckle, key, jewelry, and coin etc., it could detect the knife and handgun, and the highest sensitivity is able to check out a metal as large as a clip.
According to the EMI of the installation environment.
Introducing EMC technology to generate quite a strong capability of anti-disturbance of electromagnetism through the digital filtering of DSP.
Design of anti-shock for no false signal when shocking.
Product Parameter:
Alarm way: Audio alert, and LED location lamp work at the same time
Detection zone: 8 zones
Display ways: Large screen of LCD display
Tunnel size: 200(L)*70(W)*68(H)cm
External size: 224(L)*86(W)*70(H)cm
Package size: Main body: 230*73.5*28.5cm(two piece/carton)
Host machine: 77.5*47*27cm(one piece/carton)
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The MCD-800 metal detector (WTMD) is waterproof model, it can be operated outside without weather shed.
It is a multi-channel metal detector with eight overlapping detection zones.
With overlapping construction, sensitivity differences are minimized when metal objects of different shape pass through the WTMD in various orientations.
Functions:
Utilizing 6 inch high light LCD to show the adjusting of parameter, the number of people crossing and the times of bell ringing.
It can be operated with menus in both Chinese and English, easy and convenient.
Operating in large temperature range.
Putting DSP super hybrid engine inside, storing detecting sensitivity procedures recommended by several kinds of place, including electric industry, airport check, prison and courthouse, convenient and fast to use.
Divided into 8 overlapped reticulate detecting areas according to the fundamental structure of people's body.
Adopting the single incentive frequency technology and forming the symmetrical density of upright magnetic field in the detecting areas.
High penetration and sensitivity, avoiding the weak / blind zone of detecting areas.
Adopting external infrared scanning from double sides in order to promptly catch the signal.
High speed of reset for the large number of the passenger flow detecting (60-70 person / min, the number could increase in the non-alarming mode).
Calculating the number of passenger who walking through and into the door accurately.
Installing color lights on the gateposts of 4 sides to reveal the alarm-ringing district, which is quite straightforward and could reach all angles of view.
Divided into 8 overlapped reticulate detecting areas according to the fundamental structure of people's body.
Each detecting area bears 100 sensitivity adjusting programs of stages in which specific parameters could be set according to the actual application situation.
Without considering the influence of buckle, key, jewelry, and coin etc., it could detect the knife and handgun, and the highest sensitivity is able to check out a metal as large as a clip.
According to the EMI of the installation environment.
Introducing EMC technology to generate quite a strong capability of anti-disturbance of electromagnetism through the digital filtering of DSP.
Design of anti-shock for no false signal when shocking.
Product Parameter:
Alarm way: Audio alert, and LED location lamp work at the same time
Detection zone: 8 zones
Display ways: Large screen of LCD display
Tunnel size: 200(L)*70(W)*68(H)cm
External size: 224(L)*86(W)*70(H)cm
Package size: Main body: 230*73.5*28.5cm(two piece/carton)
Host machine: 77.5*47*27cm(one piece/carton)
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Walk Through Door Frame Metal Detector Mcd-800
Model NO.: MCD-800
Usage: Metal
Alarm Way: Audio Alert and LED Location Lamp Work Together
Detection Zone: 8 Zone or 10 Zone
Display Way: 6 Inch Screen of LCD Display
Sensitivity: 0-99 Adjustable
Dimension Size: 220L*80W*65h Cm
Warranty: 1 Year
Net Weigth: 65kg/Set
Trademark: MCD
Transport Package: by Sea Standard Packing or Wooden Case
Specification: Detection Zone: 8 zone
Origin: Shenzhen
HS Code: 8543709100
Model NO.: MCD-800
Usage: Metal
Alarm Way: Audio Alert and LED Location Lamp Work Together
Detection Zone: 8 Zone or 10 Zone
Display Way: 6 Inch Screen of LCD Display
Sensitivity: 0-99 Adjustable
Dimension Size: 220L*80W*65h Cm
Warranty: 1 Year
Net Weigth: 65kg/Set
Trademark: MCD
Transport Package: by Sea Standard Packing or Wooden Case
Specification: Detection Zone: 8 zone
Origin: Shenzhen
HS Code: 8543709100
The MCD-800 metal detector (WTMD) is waterproof model, it can be operated outside without weather shed.