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Opto Engineering Bi-Telecentric Lenses

TC SERIES: DOUBLE SIDED TELECENTRIC LENSES

  Telecentric lenses are mandatory to develop imaging systems for dimensional measurement. Among the most important features peculiar to TELECENTRIC lenses, making them radically different from common MACRO lens:

  • NO PARALLAX error: the lens captures only the image of surfaces that are orthogonal to the main optical axis

  • NO CHANGE OF MAGNIFICATION within the depth of field: moving back and forth the object from the best focus distance, the object's image size doesn't change

  • INCREASED DEPTH OF FIELD: in comparison with a common macro lens with the same working F/# and magnification, a telecentric lens exhibits a larger depth of focus.

LEARN MORE about bi-telecentric lenses. Download the bi-telecentric lenses tutorial.

Our special telecentric lens design also meets the following specifications:

  1. Bi-Telecentric Design: the lens is telecentric both in the object and in the image space, allowing a telecentricity of less than 0,1° within the field depth

  2. Distortion < 0,1% at the field corners

  3. VIS + NIR design and coating optimisation

  4. MTF > 40% @ 130 lines/mm

  5. Collimated beam LED illuminators (LT CL series), back light illuminators (LT BK series), anular illuminators (LT RN series)  or diffused coaxial illuminators (LT CX series) fully optically and mechanically compatible available

  6. Quality Test Report available: Download the Telecentric Lens Test Report.

TC SERIES SPECIFICATIONS

  Each telecentric lens is carefully quality controlled and a precise regulation of telecentricity is made: any lens is delivered with its own quality test report which ensures optical specifications conformity.
Working distance and field depth are scaled to the object size: in our product philosophy lenses are specifically tailored for a particular detector and object size, to reduce lens dimensions and weight.

  The lens suiting your application can be easily selected through its code: the second group of digits (13, 12 or 23) says which is the maximum allowable detector size (1/3, 1/2 and 2/3 inch respectively), while the third group of digits says which is the maximum object size: e.g. A TC 12 64 has a field of view of 64 (x 48) mm on a 1/2 inch detector..

Download the Telecentric Lenses Brochure
Nuovi TC 001 Bi-Telecentric Lens
Tc 23 36 002 bi-telecentric lens
Tc 23 64 001 bi-telecentric lens
MATRIX DETECTOR CAMERA TELECENTRIC LENSES                          
    OBJECT FIELD (6) OPTICAL SPECIFICATIONS DIMENSIONS    
      1/3"     1/2"     2/3"                        
model magn. w x h w x h w x h W.D. F/N MTF @ Field  Telecen- Distortion Mount Length Diam.    
  (X) 4,8   3,6 6,4   4,8 8,8   6,6 (1) (2) 70 lp/mm Depth (3) tricity (4)     (5)     Datasheet
    (mm)   (mm) (mm)   (mm) (mm)   (mm) (mm)   % (mm) (deg) (%)   (mm) (mm)   download:
                                         
TC 23 04 2 2,4 x 1,8 3,2 x 2,4 4,4 x 3,3 57,1 11 >30 0,2 < 0,08 < 0,08 C 101,4 28   TC 23 04
TC 23 07 1,333 3,6 x 2,7 4,8 x 3,6 6,6 x 5,0 61,2 11 >30 0,5 < 0,08 < 0,08 C 78,5 28   TC 23 07
TC 23 09 1 4,8 x 3,6 6,4 x 4,8 8,8 x 6,6 63,3 11 >25 1 < 0,08 < 0,08 C 65 28   TC 23 09
TC 12 16 0,4 12,0 x 9,0 16,0 x 12,0 Ø = 16,5 45,3 8 > 40 4,5 < 0,1 < 0,08 C 92 37,8   TC 12 16
TC 23 16 0,55 8,7 x 6,5 11,6 x 8,7 16,0 x 12,0 45,3 8 >30 3 < 0,1 <0,07 C 112 37,8   TC 23 16
TC 12 24 0,27 18,0 x 13,5 24,0 x 18,0 Ø = 24,8 69,2 8 >45 10 < 0,1 < 0,08 C 118 44   TC 12 24
TC 23 24 0,37 13,1 x 9,8 17,5 x 13,1 24,0 x 18,0 63,4 8 >45 7 < 0,1 < 0,1 C 122 44   TC 23 24
TC 13 36 0,13 36,0 x 27,0 Ø = 36,0 n.a   n.a 103,5 8 >50 38 <0,08 < 0,08 C 133 61   TC 13 36
TC 12 36 0,18 27,0 x 20,3 36,0 x 27,0 Ø = 37,1 103,5 8 > 40 22 <0,08 < 0,1 C 148 61   TC 12 36
TC 23 36 0,24 19,6 x 14,7 26,2 x 19,6 36,0 x 27,0 103,5 8 > 40 12 <0,08 < 0,1 C 164,9 61   TC 23 36
TC 12 56 0,11 42,0 x 31,5 56,0 x 42,0 Ø = 57,8 159,3 8 >50 45 <0,08 < 0,08 C 205 80   TC 12 56
TC 23 56 0,157 30,5 x 22,9 40,7 x 30,5 56,0 x 42,0 159,3 8 >45 26 <0,08 < 0,08 C 225 80   TC 23 56
TC 13 64 0,075 64,0 x 48,0 Ø = 64,0 n.a   n.a 182,3 8 > 40 130 <0,08 <0,07 C 212 100   TC 13 64
TC 12 64 0,1 48,0 x 36,0 64,0 x 48,0 Ø = 66,0 182,3 8 >50 60 <0,08 <0,07 C 227 100   TC 12 64
TC 23 64 0,14 34,9 x 26,2 46,5 x 34,9 64,0 x 48,0 182,3 8 >50 36 <0,08 <0,07 C 245,5 100   TC 23 64
TC 23 72 0,12 39,3 x 29,5 52,4 x 39,3 72,0 x 54,0 227,7 8 >40 48 <0,08 <0,07 C 300 120   TC 23 72
TC 12 80 0,08 60,0 x 45,0 80,0 x 60,0 Ø = 82,5 227,7 8 >50 90 <0,08 <0,1 C 272 120   TC 12 80
TC 23 80 0,11 43,6 x 32,7 58,2 x 43,6 80,0 x 60,0 227,7 8 >50 57 <0,08 <0,1 C 272 120   TC 23 80
TC 23 85 0,10 46,4 x 34,8 61,8 x 46,4 85,0 x 63,8 280,6 8 >45 60 <0,08 <0,08 C 346 146   TC 23 85
TC 13 96 0,050 96,0 x 72,0 Ø = 96,0 n.a n.a n.a 280,6 8 >50 240 <0,08 <0,1 C 302 146   TC 13 96
TC 12 96 0,067 72,0 x 54,0 96,0 x 72,0 Ø = 99,0 279,6 8 >45 120 <0,08 <0,08 C 318 146   TC 12 96
TC 23 96 0,092 52,4 x 39,3 69,8 x 52,4 96,0 x 72,0 279,6 8 > 40 70 <0,08 <0,08 C 338 146   TC 23 96
TC 23 110 0,080 60,0 x 45,0 80,0 x 60,0 110,0 x 82,5 336,5 8 > 40 90 <0,08 <0,07 C 431 185   TC 23 110
TC 12 120 0,053 90,0 x 67,5 120,0 x 90,0 Ø = 123,8 336,5 8 >45 180 <0,08 <0,1 C 402 185   TC 12 120
TC 23 120 0,073 65,5 x 49,1 87,3 x 65,5 120,0 x 90,0 336,5 8 >35 105 <0,08 <0,1 C 422 185   TC 23 120
TC 23 130 0,068 70,9 x 53,2 94,5 x 70,9 130,0 x 97,5 398 8 > 40 150 <0,08 <0,1 C 490 200   TC 23 130
TC 12 144 0,044 108,0 x 81,0 144,0 x 108,0 Ø = 148,5 398 8 >35 260 <0,08 <0,08 C 483 200   TC 12 144
TC 23 144 0,061 78,5 x 58,9 104,7 x 78,5 144,0 x 108,0 398 8 > 40 160 <0,08 <0,08 C 628 200   TC 23 144
TC 23 172 0,051 93,8 x 70,4 125,1 x 93,8 172,0 x 129,0 531 8 > 40 240 <0,08 <0,1 C 628 260   TC 23 172
TC 12 192 0,033 144,0 x 108,0 192,0 x 144,0 Ø = 198,0 531 8 >45 360 <0,08 <0,08 C 600 260   TC 12 192
TC 23 192 0,046 104,7 x 78,5 139,6 x 104,7 192,0 x 144,0 531 8 >35 240 <0,08 <0,08 C 618 260   TC 23 192
TC 23 200 0,044 109,1 x 81,8 145,5 x 109,1 200,0 x 150,0 500 8 > 40 310 <0,08 <0,1 C 785 330   TC 23 200
TC 23 240 0,037 130,9 x 98,2 174,5 x 130,9 240,0 x 180,0 500 8 >45 380 <0,08 <0,08 C 778 330   TC 23 240
                                         
LINEAR DETECTOR CAMERA TELECENTRIC LENSES                          
  LINE DETECTOR/OBJECT FIELD (6) OPTICAL SPECIFICATIONS DIMENSIONS    
model magn. 4k x 7μm 2k x 10μm 2k x 7μm W.D. F/N MTF @ Field  Telecen- Distortion Mount Length Diam.    
  (X) l = 29 mm l = 21 mm l = 14 mm (1) (2) 70 lp/mm Depth (3) tricity (4)     (5)     Datasheet
                      (mm) 0 % (mm) (deg) (%)   (mm) (mm)   download:
                                           
TCL 060 0,478   60     43     30   230 9 >30 4 <0,08 <0,08 custom 460 100   TCL 060
TCL 060 0,359   80     57     40   243 9 >30 7 <0,1 <0,1 custom 460 120   TCL 080
TCL 120 0,239   120     86     60   250 9 >30 15 <0,1 <0,15 custom 460 146   TCL 120
                                         
(1) Working distance: best focus front lens to object distance. Set this distance within +/- 3% of the nominal value to optimize distortion 
(2) Working F-number: the real F-number of a lens when used as a macro. Lenses with smaller apertures can be supplied on request
(3) Out of this interval the MTF contrast falls below 50% of the nominal value; the field depth can be increased by a smaller diapragm, available on request
(4) Maximum slope of principal rays inside the lens: turned in millirad. tells which is the maximum measurement error for any millimiter of object displacement
(5) Measured from the end of the mechanics to the camera flange
(6) For the fields with the indication "Ø =" the image of a circular object is inscribed inside the short detector side

 

Clamping Flanges for Telecentric lenses up to TC XX 80 available: download the brochure

Clamping Flanges for Telecentric lenses

 

Example of compatibility of telecentric lens family and LED illuminator family.

TC Series telecentric Lens family TCXX 36 with LT RN TCXX36 with LTRN36 (ring) illuminator
TC Series telecentric Lens family TCXX 36 with LT CX TCXX36 with LTCX36 (coaxial) illuminator
TC Series telecentric Lens family TCXX 36 with LT BK TCXX36 with LTBK36 (back light) illuminator
TCXX36 with LTCL36 (collimated) illuminator
   

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