Telecentric Lenses

Single-Sided Telecentric

Invarigon-R | Macro Invaritar | ELWD Macro Invaritar | Invaritar Large-Field

Invaritar™ Large-Field

Invaritar™ modular, large-field telecentric gauging lenses provide a wide range of solutions for a variety of machine vision applications. A telecentric lens system is created by combining a base lens with an appropriate attachment lens to achieve the required magnification and field of view.

Telecentric performance of less than 0.5-degree chief ray angle over the entire object field allows precise gauging of 3-dimensional objects.
Large selection of base and attachment lenses covers most applications.
Low distortion provides for highly accurate images.
Lockable aperture adjusts to select the required depth of field.
C-mount lenses include fine focus adjustment, providing sharper images.
High-performance multi-layer coatings provide the highest image clarity, especially for backlit applications.
Both C-mount and F-mount base lenses are available.

C-mount Base Lenses

Part Number (Click on part number to view PDF drawing)	Length		Diameter		Weight
Part Number (Click on part number to view PDF drawing)	mm	inches	mm	inches	kg	lb
59 LGC 916	55	2.2	52	2.1	0.15	0.32
59 LGG 925	53	2.1	30	1.2	0.08	0.17
59 LGG 935	46	1.8	30	1.2	0.08	0.17
59 LGG 950	55	2.2	30	1.2	0.08	0.17

Attachment Lenses

Part Number (Click on part number to view PDF drawing)	Length		Diameter		Weight
Part Number (Click on part number to view PDF drawing)	mm	inches	mm	inches	kg	lb
59 LGH 416	121	4.8	84	3.3	0.64	1.40
59 LGJ 423	206	8.1	121	4.8	1.76	3.87
59 LGL 428	269	10.6	150	5.9	4.00	8.80
59 LGH 431	275	10.8	84	3.3	0.81	1.78

F-mount Base Lenses

Part Number	Length		Diameter		Weight
Part Number	mm	inches	mm	inches	kg	lb
59 LGB 435	74	2.9	76	3.0	0.04	0.9
59 LGB 450	57	2.2	76	3.0	0.04	0.8
59 LGB 485	68	2.7	82	3.2	0.06	1.3
59 LGB 499	117	4.6	85	3.3	0.08	1.8

C-mount Invaritar™ Large-Field Telecentric Lens Specifications
(for camera formats less than or equal to 2/3")

Mag. (nom.)	Working Distance		Maximum Object Dimensions (in.)¹			Minimum Operating F# Range ²	Depth of Field (in) ³	Part Numbers for Required Optical Components
Mag. (nom.)	mm	in	1/3" CCD	1/2" CCD	2/3" CCD	Minimum Operating F# Range ²	Depth of Field (in) ³	Base Lens	Attach. Lens	Tele- converter ⁴
0.06x	257	10.1	2.23 x 2.98	N/A	N/A	2.0	7.22	59 LGC 916	59 LGL 428	none
0.07x	203	8.0	1.83 x 2.44	N/A	N/A	2.8	5.0	59 LGC 916	59 LGJ 423	none
0.09x	257	10.1	1.43 X 1.90	1.90 X 2.54	2.62 X 3.49	2.0	3.21	59 LGG 925	59 LGL 428	none
0.10x	152	6.0	1.28 X 1.70	N/A	N/A	5.6	2.60	59 LGC 916	59 LGH 416	none
0.11x	203	8.0	1.17 X 1.56	1.56 X 2.09	2.15 X 2.87	2.8	2.15	59 LGG 925	59 LGJ 423	none
0.11x	302	11.9	1.13 x 1.51	1.51 x 2.01	N/A	2.8	2.15	59 LGG 935	59 LGH 431	none
0.13x	247	10.1	1.02 X 1.36	1.36 X 1.81	1.87 X 2.49	2.0	1.54	59 LGG 935	59 LGL 428	none
0.15x	203	8.0	0.84 X 1.12	1.12 X 1.49	1.54 X 2.05	5.6	1.15	59 LGG 935	59 LGJ 423	none
0.16x	152	6.0	0.82 X 1.09	1.09 X 1.45	1.50 X 2.00	11.0	1.02	59 LGG 925	59 LGH 416	none
0.16x	302	11.9	0.79 X 1.06	1.06 X 1.41	1.45 X 1.94	2.8	1.02	59 LGG 950	59 LGH 431	none
0.18x	257	10.1	0.71 X 0.95	0.95 X 1.27	1.31 X 1.74	5.6	0.80	59 LGG 950	59 LGL 428	none
0.22x	152	6.0	0.58 X 0.78	0.78 X 1.04	1.07 X 1.42	11.0	0.54	59 LGG 935	59 LGH 416	none
0.22x	203	8.0	0.59 X 0.78	0.78 X 1.05	1.08 X 1.44	5.6	0.54	59 LGG 950	59 LGJ 423	none
0.24x	267	10.5	0.53 X 0.70	0.07 X 0.94	0.97 X 1.29	4.0	0.45	59 LGG 950	59 LGH 431	59 LGZ 415
0.27x	241	9.5	0.48 X 0.64	0.63 X 0.85	0.87 X 1.16	11.0	0.36	59 LGG 950	59 LGL 428	59 LGZ 415
0.31x	140	5.5	0.41 X 0.54	0.54 X 0.72	0.75 X 1.00	11.0	0.27	59 LGG 950	59 LGH 416	none
0.32x	267	10.5	0.39 X 0.53	0.53 X 0.70	0.72 X 0.97	5.6	0.25	59 LGG 950	59 LGH 431	59 LGZ 420
0.33x	203	8.0	0.39 X 0.52	0.52 X 0.70	0.72 X 0.96	5.6	0.24	59 LGG 950	59 LGH 423	59 LGZ 415
036x	241	9.5	0.36 X 0.48	0.48 X 0.64	0.66 X 0.87	16.0	0.29	59 LGG 950	59 LGL 428	59 LGZ 420
0.43x	203	8.0	0.29 X 0.39	0.39 X 0.52	0.54 X 0.72	16.0	0.20	59 LGG 950	59 LGJ 423	59 LGZ 420
0.47x	140	5.5	0.27 X 0.36	0.36 X 0.48	0.50 X 0.66	11.0	0.12	59 LGG 950	59 LGH 416	59 LGZ 415
0.63x	140	5.5	0.20 X 0.27	0.27 X 0.36	0.37 X 0.50	16.0	0.10	59 LGG 950	59 LGH 416	59 LGZ 420
1. The maximum object dimensions shown in the table are 90% of the theoretical maximum dimensions, providing safety factor of magnification and alignment errors. 2. Lenses operated at smaller f/# may show reduced resolution, especially near the edge of the field of view. 3. Depth of field is calculated for a 30-µm allowable blur at the image (camera) plane at f/11 (for lenses with minimum operating f-number<f/16) or f/22 (for all others). 4. Teleconverters 59 LGZ 420 and 59 LGZ 415 cannot be used with certain types of 3-CCD color cameras. Note: Distortion is less than 2% for all lenses. Contact Navitar for distortion characteristics for a specific lens.

F-mount Invaritar™ Large-Field Telecentric Lens Specifications
(for camera formats greater than 2/3")

Mag. (nom.)	Working Distance		Maximum Object Dimensions (in.)¹	Minimum Operating F# ²	Depth of Field (in) ³	Part Numbers for Required Optical Components
Mag. (nom.)	mm	in	1" CCD	Minimum Operating F# ²	Depth of Field (in) ³	Base Lens	Attach. Lens
0.13x	241	9.5	2.61 x 2.61	16.0	2.24	59 LGB 435	59 LGL 428
0.15x	203	8.0	2.14 X 2.14	16.0	1.68	59 LGB 435	59 LGJ 423
0.18x	241	9.5	1.83 X 1.83	16.0	1.17	59 LGB 450	59 LGL 428
0.22x	140	5.5	1.49 X 1.49	16.0	0.78	59 LGB 435	59 LGH 416
0.22x	203	8.0	1.50 X 1.50	16.0	0.78	59 LGB 450	59 LGJ 423
0.27x	267	10.5	1.19 X 1.19	2.8	0.36	59 LGB 485	59 LGH 431
0.30x	241	9.5	1.07 X 1.07	16.0	0.42	59 LGB 485	59 LGL 428
0.31x	140	5.5	0.04 X 0.04	16.0	0.39	59 LGB 450	59 LGH 416
0.32x	267	10.5	0.01 X 0.01	4.0	0.25	59 LGB 499	59 LGH 431
0.36x	241	9.5	0.91 X 0.91	16.0	0.29	59 LGB 499	59 LGL 428
0.37x	203	8.0	0.88 X 0.88	16.0	0.28	59 LGB 485	59 LGJ 423
0.43x	203	8.0	0.75 X 0.75	16.0	0.20	59 LGB 499	59 LGJ 423
0.53x	140	5.5	0.61 X 0.61	8.0	0.09	59 LGB 485	59 LGH 416
0.63x	140	5.5	0.52 X 0.52	8.0	0.07	59 LGB 499	59 LGH 416
1. The maximum object dimensions shown in the table are 90% of the theoretical maximum dimensions for a 9.2 mm x 9.2 mm (Kodak MegaPlus) format sensor; providing a safety factor of magnification and alignment errors. For larger arrays, contact Navitar. 2. Lenses operated at smaller f/# may show reduced resolution, especially near the edge of the field of view. 3. Depth of field is calculated for a 30-µm allowable blur at the image (camera) plane at f/11 (for lenses with minimum operating f-number <f/16) or f/22 (for all others). Note: Distortion is less than 2% for all lenses. Contact Navitar for distortion characteristics for a specific lens. An accessory C-mount adaptor (59 LGT 101) is required for coupling F-mount Invaritar™ base lenses to a C-mount camera.