Telecentric Lenses

Single-Sided Telecentric

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

Invarigon-R™

The Invarigon-R™ family of gauging lenses provides telecentric imaging with a wide selection of magnifications. Invarigon-R™ gauging lenses are the most cost-effective choice for critical inspection and metrology imaging applications.

Telecentric performance (<0.2° chief ray angle over the entire object field) allows precise gauging of 3-dimensional objects.
Large selection of magnifications covers most applications.
Lockable aperture adjusts to select the required depth of field.
Fine focus adjustment provides sharper images.
Rugged single-piece design stands up to harsh industrial environments.
High-performance multi-layer coatings provide the highest image clarity, especially for back-lit applications.
Standard C-mount camera interface.

Invarigon-R™ Lens Specifications

Part # (Click part # to view PDF drawing)	Mag. (Nominal)	Length		Diameter		Working Distance		Maximum Object Dimensions (in.)¹			Min f#²	Min. Operating f#³	Depth of Field (in.)⁴
Part # (Click part # to view PDF drawing)	Mag. (Nominal)	mm.	in.	mm.	in.	mm.	in.	1/3" CCD	1/2" CCD	2/3" CCD	Min f#²	Min. Operating f#³	Depth of Field (in.)⁴
59 LGU 013	0.13x	217	8.5	80	3.2	190	7.4	1.02 x 1.36	1.36 x 1.81	N/A	1.4	4	1.66
59 LGU 016	0.16x	176	6.9	70	2.8	150	6.0	0.82 x 1.09	1.09 x 1.45	N/A	1.4	5.6	1.06
59 LGU 018	0.18x	154	6.1	61	2.4	130	5.2	0.71 x 0.95	0.95 x 1.27	N/A	1.4	5.6	0.81
59 LGU 022	0.22x	170	6.7	70	2.8	150	6.0	0.59 x 0.78	0.78 x 1.04	1.07 x 1.43	1.6	8	0.54
59 LGU 025	0.25x	148	5.8	61	2.4	130	5.2	0.51 x 0.68	0.68 x 0.91	0.94 x 1.25	1.6	8	0.42
59 LGU 029	0.29x	126	4.9	54	2.1	110	4.4	0.44 x 0.59	0.58 x 0.78	0.80 x 1.07	1.6	8	0.31
59 LGU 031	0.31x	171	6.7	70	2.8	150	6.0	0.41 x 0.54	0.54 x 0.72	0.74 x 0.99	2.3	8	0.27
59 LGU 036	0.36x	149	5.9	61	2.4	130	5.2	0.36 x 0.47	0.48 x 0.63	0.66 x 0.87	2.3	8	0.20
59 LGU 042	0.42x	126	5.0	54	2.1	110	4.4	0.31 x 0.41	0.41 x 0.54	0.56 x 0.74	2.3	8	0.15
59 LGU 050	0.50x	105	4.1	54	2.1	90	3.6	0.26 x 0.34	0.34 x 0.45	0.47 x 0.62	2.3	11	0.10
The maximum object dimensions shown in the table are 90% of the theoretical maximum dimensions, providing a safety factor for magnification and alignment errors. Image-side working f/# with lens aperture fully open. For combinations with teleconverters, the minimum image-side f-number is increased by the teleconverter magnification. Lenses operated at smaller f/# may show reduced resolution, especially near the edge of the field of view. Depth of field is calculated at f/11 for lenses with minimum operating f/# < f/16 (f/22 for all others) and for 30-µm allowable blur at the image (camera) plane. Note: Distortion is less than 1.2% for all lenses. Contact Navitar for specific distortion characteristics for a particular lens.

Accessory Note:
Teleconverter accessories can be used with select Invarigon-R™ lenses (59 LGU 031, 59 LGU 036, 59 LGU 042, 59 LGU 050) to increase magnification by a factor of 1.5x or 2.0x depending on the lens combination. Teleconverters cannot be used with certain types of 3-CCD color cameras.