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TECHSPEC®組件由愛特蒙特光學設計、指定或製造。進一步瞭解

52mm Telecentric Backlight Illuminator

52mm Telecentric Backlight Illuminator, #62-760

52mm Telecentric Backlight Illuminator, #62-760

Stock #62-760
NT$27,000
Qty 1
NT$27,000
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注意: 本項目需要搭配配件使用 | 進一步瞭解
Diameter (mm):
65.00
Filter Thread:
M62 x 0.75
Length (mm):
193.80
Type of Illumination:
Specialty
Note:
Aperture is adjustable
Beam Diameter (mm):
52
Manufacturer:
EO
Geometry:
Backlight
Light Mount Inner Diameter (mm):
8

Regulatory Compliance

RoHS:

Product Description

TECHSPEC® Telecentric Backlight Illuminators use the optical design principal of telecentricity to illuminate objects with truly collimated light and produce high contrast, silhouetted images. Standard backlights are diffuse to avoid hot spots, but these diffuse reflections can also reduce edge contrast. TECHSPEC® Telecentric Backlight Illuminators have collimated light rays (not diffuse) to increase edge contrast, thereby increasing measurement accuracy. Used in combination with a telecentric imaging lens, these illuminators are ideal for machine vision applications that require accurate measurements and are compatible with 8mm coaxial LEDS or ¼" (0.312") fiber optic light guides.

Note: Additional light source and light source power supply required for operation.

Unique twin-ring mounting clamps (#56-870 and #56-871) are also available separately.

技術資訊

 

為何要使用遠心照明?

  • 比傳統背光照明提供更高的邊緣對比度
  • 適合精確測量應用
  • 優異的微小缺陷偵測能力、測量準確度及可重複性
  • 增加照明光源與物體之間的距離
Clear Edge Silhouette from Telecentric Illuminator System
Blurry Edges from Standard Backlight System
Collimated Light Rays from a Telecentric Illuminator
Diffuse Reflections from a Standard Backlight
                           
圖 1: 比較遠心照明 (左) 與傳統背光 (右) 的邊緣對比度。遠心照明裝置的平行光線,可提供高對比輪廓,而標準背光的漫反射則產生模糊邊緣。

 

數值孔徑 (NA) 相符的重要性

  • 照明來源 NA 及成像鏡頭 NA 相符,可讓系統達到最高效率
  • 如果照明來源 NA 小於成像鏡頭 NA,就會導致人造邊角失光
  • 成像鏡頭未滿會降低對比度,導致物體資訊喪失
  • 成像鏡頭滿溢會捨棄部分光線,但相對於未滿的情況則較為理想
Underfilling occurs if the NA of the illumination source is smaller than the NA of the imaging lens, reducing contrast and resulting in loss of object information. Green lines represent the NA of the illumination source and blue lines represent the NA of the imaging lens.
圖 2a:若照明來源 NA 小於成像鏡頭 NA,就會發生未滿情形,造成對比度降低,導致物體資訊喪失。綠色線條代表照明來源 NA,藍色線條代表成像鏡頭 NA。
Overfilling occurs if the NA of the illumination source is larger than the NA of the imaging lens, causing some light to be wasted. Overfilling is preferable than underfilling, but the NA’s should be as close as possible to reduce the amount of light loss.
圖 2b:若照明來源 NA 大於成像鏡頭 NA,就會發生滿溢情形,造成部分光線浪費。滿溢較未滿更理想,不過 NA 應盡量接近,以減少光線損失。

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