Scan Lenses, f-theta lenses for YAG lasers

New Products

Scan Lenses (f-theta Lenses) for YAG Lasers

Lenses used in combination with XY galvanometer scanner are called �-theta lenses, plane field objectives or simple scan lenses. �-theta lenses are used in various applications from industrial material processing, drilling, welding of synthetic material and cutting in addition to medical and biotechnology (confocal microscopy, ophthalmology) to science and research. The design and the quality of the optical components are playing a decisive role.

A standard lenses focus the laser beam on a spherical plain in contrast to an ideal flat or plane field. The use of �-theta lenses provides a plane focusing surface and almost constant spot size over the entire XY image plane or scan field. The position of the spot on the image plane is directly proportional to the scan angle.

The scan length specifications in this catalogue are based on mirror spacings of typical scan heads. For other scan systems the parameter �aperture stop� defines the distance of the geometrical center between the mirrors to the mechanical edge of the lens housing.

Telecentric �-theta lenses focus the laser beam so it is almost perpendicular (within 1 degree) to the work surface over the entire scan field. This ensures the spot is round even in the corners of the scan field and if holes or channels are machined, they are perpendicular to the work surface.

Color corrected �-Theta lenses are designed to accommodate multiple wavelengths. Normally each wavelength would focus to a different point on the work surface. In a color corrected lens the focal point for each wavelength coincide. This is achieved by schlechtging an ideal combination of different glass types for the various lens elements in the lens. Color corrected �-theta lens are primarily used for simultaneously viewing the work surface through the scan lens with a camera while laser processing. Another common application for color corrected scan lenses are for use in confocal scan microscopes which require a broad range of visible wavelengths.

Description of part Number: STY-xxxx-yyy-zzz-A

STY--- STY series YAG laser f-theta lenses

xxxx-- laser wavelength, 1064 means 1064nm, 10.6 means 10.6um.

yyy---- mark field, yyy x yyy mm

zzz---- effective focal length in mm

A------ others

Scan lens

Three-element lens

(1) 1064nm Scan Lenses

STY Series f-theta Lens

Model	F.L. mm	WD mm	Scan area mm	Scan Angle θmax	E.P. mm	Spot �m	D1 mm	D2 mm	Screw	Protective glass dia. mm
STY-1064-35-63	63	58	Φ50/35x35	�22�	12	10	31	90	M85�1	75
STY-1064-50-80	80	91.6	Φ70/50�50	�22�	12	12	31	90	M85�1	75
STY-1064-55-80	80	83	Φ78/55�55	�25�	20	15	42	90	M85�1	80
STY-1064-62-100	100	107	Φ87/62�62	�25�	12	14	33	90	M85�1	75
STY-1064-70-100-B	100	107	Φ100/70�70	�28�	16	10	40	90	M85�1	80
STY-1064-85-130	130	145	Φ120/85�85	�25�	12	14	35	90	M85�1	75
STY-1064-102-150	150	165	Φ144/102�102	�28�	12	18	36	90	M85x1	75
STY-1064-110-160	160	180	Φ155/110�110	�28�	12	18	36	90	M85�1	75
STY-1064-110-160-B	160	180	Φ155/110�110	�28	16	18	40	90	M85�1	80
STY-1064-110-160-C	160	180	Φ155/110�110	�28	20	18	52	120	M85�1	113
STY-1064-117-170	170	191	Φ165/117�117	�28�	16	18	38	90	M85�1	80
STY-1064-130-188	188	212	Φ185/130�130	�28�	12	18	36	90	M85�1	75
STY-1064-145-210-B	210	225.8	Φ205/145�145	�28�	16	18	36	90	M85�1	80
STY-1064-153-220	220	259	153x153	�28�	12	18	36	90	M85�1	75
STY-1064-175-254	254	277.7	Φ245/1751�75	�28�	15	20	36	90	M85�1	75
STY-1064-175-254-B	254	274	Φ245/175�175	�28�	20	20	52	120	M85�1	113
STY-1064-205-290	290	327	Φ290/205�205	�28�	16	20	38	90	M85�1	80
STY-1064-230-330	330	363	Φ330/230�230	�28�	16	20	38	90	M85�1	80
STY-1064-230-330-B	330	398	Φ330/230�230	�28�	15	20	38	90	M85�1	75
STY-1064-255-370	370	430	Φ360/255�255	�28�	20	20	52	120	M85�1	113
STY-1064-255-380	380	420	Φ360/255�255	�28�	15	20	38	90	M85�1	75
STY-1064-286-420	420	456	Φ405/286�286	�28�	20	20	52	120	M85�1	113
STY-1064-300-430	430	477	Φ425/300�300	�28�	20	20	52	120	M85�1	113
STY-1064-300-430-B	430	495	Φ425/300�300	�28�	20	20	60	120	M85�1	113
STY-1064-360-525	525	606	Φ510/360�360	�28�	20	30	52	120	M85�1	113
STY-1064-400-580	580	657	Φ566/400�400	�28�	20	25	72	125	M85�1	118
STY-1064-420-590	590	650	Φ595/420�420	�28�	20	25	52	140	M95�1	133.5
STY-1064-430-610	610	670	Φ610/430�430	�28�	20	25	52	140	M95�1	133.5
STY-1064-450-650	650	736	Φ636/450�450	�28�	20	30	52	120	M85�1	113

F.L.=focal length; EP=entrance pupil; AD=aperture distance; FD=flange distance; WD=working distance.
spot: it is theoretical optical limit.

STS Series Standard �-Theta Lenses at 1064nm (Optical Glass)

Part No.	FL (mm)	SA (��)	SL (mm)	SAR (mm x mm)	MI (mm)	AS (mm)	Length (mm)	MO (mm)	MT	WD (mm)	PW
STS-0063/126	63.03	23.80	51.44	36x36	8.00	15.00	35.63	59.20	M39x1 or M55x1	74.54	Yes
STS-0101/126	100.12	22.00	76.88	55x55	10.00	18.00	40.00	90.00	M85x1	111.98	Yes
STS-0162/126	159.97	24.80	141.76	100x100	8.00	15.00	25.22	59.20	M39x1 or M55x1	179.93	Yes
STS-0163/126	162.41	26.80	153.84	107x107	12.00	22.00	43.30	89.00	M85x1	181.08	Yes
STS-3163/126	163.00	31.80	181.13	120x120	15.00	22.88	51.99	103.00	M85x1	186.61	Yes
STS-2163/126	163.00	27.80	158.07	106x106	20.00	29.00	66.00	128.00	M85x1	192.66	Yes
STS-0191/126	191.87	26.80	180.35	125x125	20.00	40.00	57.85	128.00	3.875�x32	220.88	Yes
STS-0202/126	201.58	19.00	132.62	90x90	30.00	43.00	84.10	132.00	M85x1	243.05	Yes
STS-3254/126	253.94	19.20	170.72	115x115	30.00	48.94	75.50	130.00	M85x1	297.18	Yes
STS-4255/126	254.00	27.20	242.88	168x168	20.00	38.00	70.06	130.00	M85x1	292.70	Yes
STS-1254/126	254.38	25.60	226.91	160x160	12.00	23.50	55.30	109.00	M85x1	306.26	Yes
STS-0300/126	300.02	25.00	261.46	175x175	20.00	35.00	78.00	128.00	M85x1	353.09	Yes
STS-0350/126	346.26	25.20	304.96	212x212	12.00	22.48	52.40	95.00	M85x1	412.17	Yes
STS-0351/126	354.10	19.60	245.87	160x160	30.00	53.50	48.50	128.00	3.875�x32	396.25	Yes
STS-0411/126	409.86	21.00	304.06	210x210	20.00	44.00	56.80	105.00	M85x1	472.77	Yes
STS-0420/126	419.98	23.60	353.53	242x242	30.00	59.45	52.00	136.00-	M132x1	480.14	---
STS-0508/126	566.34	23.20	467.21	325x325	20.00	45.00	56.90	127.00	M85x1	647.59	---
STS-0635/126	653.81	22.60	528.66	370x370	25.00	75.00	48.50	133.00	M110x1	728.99	---
STS-0825/126	815.01	27.20	804.50	560x560	24.00	43.24	58.00	130.00	M102x1	888.52	Yes

Remark: FL=focal length; SA=scan angle; SL=scan length; SAR=scan area; MI=max. input beam diameter; AS=aperture stop; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.

STS Series Standard �-Theta Lenses at 1064nm (Fused Silica)

Part No.	FL (mm)	SA (��)	SL (mm)	SAR (mm x mm)	MI (mm)	AS (mm)	Length (mm)	MO (mm)	MT	WD (mm)	PW
STS-2175/126	163.35	25.00	137.11	94x94	20.00	30.50	110.24	150.00	M85x1	205.47	Yes
STS-3260/126	277.11	21.40	205.60	142x142	15.00	31.00	61.00	105.00	M85x1	346.07	Yes
STS-1330/126	340.00	24.40	306.60	215x215	20.00	38.50	174.60	163.00	M85x1	204.04	Yes
STS-1500/126	499.97	27.40	493.71	340x340	20.00	30.50	68.00	148.00	M85x1	571.26	Yes

Remark: FL=focal length; SA=scan angle; SAR=scan area; MI=max. input beam diameter; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.

STS Series Low Absorption �-Theta Lenses at 1064nm (Fused Silica)

Part No.	FL (mm)	SA (��)	SL (mm)	SAR (mm x mm)	MI (mm)	AS (mm)	Length (mm)	MO (mm)	MT	WD (mm)	PW
STS-2175/328	163.35	25.00	137.11	94x94	20.00	30.50	110.24	150.00	M85x1	205.47	Yes
STS-3260/328	277.11	21.40	205.60	142x142	15.00	31.00	61.00	105.00	M85x1	346.07	Yes
STS-1330/328	340.00	24.40	306.60	215x215	20.00	38.50	174.60	163.00	M85x1	204.04	Yes
STS-1500/328	499.97	27.40	493.71	340x340	20.00	30.50	68.00	148.00	M85x1	571.26	Yes

STS Series �-Theta Lenses at 1064nm for Short Pulse Lasers

Part No.

(mm)

(��)

(mm)

SAR

(mm x mm)

(mm)

Length (mm)

(mm)

STS-7163

163.03

24.40

138.06

95x95

10.00

27.00

44.00

89.00

M85x1

197.07

Yes

STS Series Telecentric �-Theta Lenses at 1064nm (Optical Glass)

Part No.	FL (mm)	SA (��)	SL (mm)	SAR (mm x mm)	MI (mm)	AS (mm)	Length (mm)	MO (mm)	MT	WD (mm)	PW
STS-0058/126	56.55	11.80	23.22	16x16	10.00	26.44	40.68	90.00	M85x1	58.43	Yes
STS-0055/126	59.69	13.60	27.94	19x19	14.00	20.10	58.00	90.00	M85x1	66.55	---
STS-0080/126	79.89	21.50	58.54	39x39	25.00	27.16	84.14	107.00	M85x1	79.45	Yes
STS-6125/126	99.25	17.60	59.86	40x40	25.00	37.36	80.40	116.00	M85x1	114.89	Yes
STS-5100/126	107.74	26.80	97.48	69x69	12.00	34.87	85.50	128.00	M85x1	137.86	Yes
STS-5365/126	162.90	19.00	106.07	73x73	20.00	61.50	114.96	154.00	M85x1	194.83	Yes
STS-5165/126	163.57	19.00	106.91	75x75	10.00	58.30	128.50	136.00	M85x1	193.54	Yes
STS-0220/126	206.71	28.40	197.38	139x139	14.00	46.00	160.00	281.00	TK267.0	289.49	---
STS-0221/126	206.71	28.40	197.38	139x139	14.00	46.00	176.68	281.00	TK267.0	274.53	Yes

STS Series Standard Telecentric �-Theta Lenses at 1064nm (Fused Silica)

Part No.

(mm)

(��)

(mm)

SAR

(mm x mm)

(mm)

Length (mm)

(mm)

STS-4031/126

32.78

8.00

9.11

6x6

10.00

16.50

39.85

90.00

M85x1

28.67

----

STS-0082/126

82.00

10.00

28.35

20x20

15.00

33.00

103.14

93.80

M85x1

84.59

Yes

Remark: FL=focal length; SA=scan angle; SAR=scan area; MI=max. input beam diameter; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.

STS Series Low Absorption Telecentric �-Theta Lenses at 1064nm (Fused Silica)

Part No.

(mm)

(��)

(mm)

SAR

(mm x mm)

(mm)

Length (mm)

(mm)

STS-4031/328

32.78

8.00

9.11

6x6

10.00

16.50

39.85

90.00

M85x1

28.67

----

STS-0082/328

82.00

10.00

28.35

20x20

15.00

33.00

103.14

93.80

M85x1

84.59

Yes

Remark: FL=focal length; SA=scan angle; SAR=scan area; MI=max. input beam diameter; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.

STQ Series Standard & Telecentric �-Theta Lenses at 1030-1080nm (Fused Silica)

Part No. FL EFL FFL SA SAR Spot M1/M2 Screw WD PW Max Telecentric Error (�)

(mm) (mm) (mm) (��) (mm�) (um) (mm) (mm)

STQ-4401-551-000-21 70 70.4 129 �12.4 30 x 30 10 17/12 M85x1 87.5 Yes 2.1

STQ-4401-561-000-21 100 105.4 218 �12.2 43 x 43 15 17/28 M85x1 137 Yes 2.1

STQ-4401-513-000-21 167 167 312 �14.8 84 x 84 17 26/28 M85x1 215.4 Yes 4.4

STQ-4401-499-000-26 255 255 364 �19.2 170 x 170 50 13/30 M85x1 317.4 Yes -

STQ-4401-546-000-26 340 340.2 515 �17.7 205 x 205 51 17/29 M85x1 441.6 Yes -

STQ-4401-508-000-26 420 420.7 559 �17.3 254 x 254 60 26/24 M85x1 510.9 Yes -

FL=Focal length; EFL=Effective focal length; FF=Flange focal length; SA=Scan angle; SAR=Scan area; WD=working distance. spot: it is theoretical optical limit.

STQ Series Standard & Telecentric �-Theta Lenses at 1064nm (Optical Glass)

Part No.	FL	EFL	FFL	SA	SAR	Spot	M1/M2	Screw	WD	PW	Max Telecentric Error (�)
Part No.	(mm)	(mm)	(mm)	(��)	(mm�)	(um)	(mm)	Screw	(mm)	PW	Max Telecentric Error (�)
STQ-4401-302-000-21	100	99.7	106	�17.7	62 x 62	16	16/12	M85x1	97.7	Yes	-
STQ-4401-464-000-21	100	100.1	195	�15.6	54 x 54	13	20/32	M85x1	126	Yes	2.1
STQ-4401-301-000-21	160	160.3	184	�17.7	99 x 99	26	16/12	M85x1	176.2	Yes	-
STQ-4401-261-000-21	163	163.1	219	�20.2	115 x 115	32	13/24	M85x1	185.9	Yes	-
STQ-4401-288-000-20	254	254.4	345	�17.7	157 x 157	25	26/23	M85x1	296.2	Yes	-
STQ-4401-360-000-21	330	331.4	443	�18.7	217 x 217	40	18/24	M85x1	387.6	Yes	-
STQ-4401-350-000-21	420	420.5	549	�19.8	291 x 291	55	30/16	M85x1	494.2	Yes

FL=Focal length; EFL=Effective focal length; FF=Flange focal length; SA=Scan angle; SAR=Scan area; WD=working distance. spot: it is theoretical optical limit.

(2) 532nm Scan Lenses

STY Series f-theta Lenses at 532nm

Model	F.L. mm	WD mm	Scan area mm	Scan Angle θmax	E.P. mm	Spot �m	D1 mm	D2 mm	Screw
STY-532-35-63	63	58	Φ50/35x35	�22�	12	10	31	90	M85�1
STY-532-50-80	80	91.6	Φ70/50�50	�22�	12	12	31	90	M85�1
STY-532-62-100	100	107	Φ87/62�62	�25�	12	14	33	90	M85�1
STY-532-74-120	120	132	Φ105/74�74	�25�	12	14	35	90	M85�1
STY-532-110-160	160	180	Φ155/110�110	�28�	16	15	36	90	M85�1

F.L.=focal length; EP=entrance pupil; AD=aperture distance; FD=flange distance; WD=working distance.
spot: it is theoretical optical limit.

STS Series Standard �-Theta Lenses at 532nm (Fused Silica)

part number standard, 532nm	part number low absorption 515-545nm	focal length mm	scan angle ��	scan length mm	scan area mm�	max. beam-�, mm	aperture stop mm	Length mm	max. outside-�, mm	WD mm
STS-3100/121	STS-3100/292	112.8	26.6	105.1	74x74	5.0	19.2	49.0	89.0	151.5
STS-3260/121	STS-3260/292	259.9	25.8	231.0	162x162	10.0	26.0	61.0	105.0	325.4
STS-1330/121	STS-1330/292	347.9	24.0	303.5	212x212	14.0	36.0	108.4	122.0	279.0

mounting thread is M85x1.

STS Series Standard �-Theta Lenses at 532nm (Optical Glass)

part number standard, 532nm	focal length mm	scan angle ��	scan length mm	scan area mm	max. beam-�, mm	aperture stop mm	Length mm	max. outside-�, mm	mounting thread	WD mm
STS-0063/121	62.9	19.6	42.5	30x30	7.0	15.0	35.6	59.2	M39/M55	76.0
STS-0101/121	89.7	25.4	79.4	58x58	6.0	18.0	40.0	90.0	M85x1	97.0
STS-0163/121	148.0	21.4	111.4	77x77	7.0	20.0	43.3	89.0	M85x1	162.7
STS-2163/121	148.3	31.2	160.8	114x114	10.0	29.0	66.0	128.0	M85x1	173.4
STS-0162/121	162.1	23.0	132.8	100x100	7.0	17.4	25.2	59.2	M39/M55	183.4
STS-3164/121	162.8	30.0	177.7	120x120	10.0	28.0	46.6	106.0	M85x1	186.5
STS-1254/121	233.5	26.0	210.9	148x148	10.0	24.7	55.3	109.0	M85x1	282.0
STS-0300/121	278.7	29.0	281.1	200x200	14.0	29.0	78.0	128.0	M85x1	326.4
STS-0508/121	520.5	25.2	466.9	330x330	16.0	43.0	56.9	127.0	M85x1	594.7
STS-0825/121	768.6	28.0	781.0	552x552	16.0	33.0	58.0	130.0	M102x1	839.2

STS Series Telecentric �-Theta Lenses at 532nm (Fused Silica)

part number standard, 532nm	part number low absorption 515-545nm	focal length mm	scan angle ��	scan length mm	scan area mm	max. beam-�, mm	aperture stop mm	Length mm	max. outside-�, mm	WD mm
STS-4031/121	STS-4031/292	32.2	4.0	8.9	6x6	10.0	16.5	39.8	90.0	28.4
STS-3046/121	STS-3046/292	48.1	7.6	9.9	7x7	15.0	26.0	64.9	90.0	60.2
STS-3050/121	STS-3050/292	58.5	14.8	29.9	20x20	6.0	21.0	39.8	87.0	79.3
STS-4010/121	STS-4010/292	100.0	14.0	49.5	35x35	10.0	30.0	78.7	106.0	130.7
STS-3161/121*	STS-3161/292*	163.9	21.0	126	90x90	10.0	26.6	98.0	122.0	219.0

* Maximum telecentric error of 4.9� mounting thread is M85x1

STS Series Telecentric �-Theta Lenses at 532nm (Optical Glass)

part number	focal length mm	scan angle ��	scan length mm	scan area mm	max. beam-�, mm	aperture stop mm	Length mm	max. outside-�, mm	mounting thread	WD mm
STS-0058/121	53.1	11.8	21.8	15x15	6.0	25.5	40.7	90.0	M85X1	52.6
STS-0055/121	59.3	14.0	28.5	20x20	10.0	16.9	58.0	90.0	M85X1	73.2
STS-0080/121	77.0	26.6	68.7	49x49	14.0	22.8	83.8	107.0	M85X1	74.2
STS-1094/121	88.0	17.4	52.5	36x36	16.0	33.8	66.3	83.0	70.00	107.3
STS-5100/121	100.1	29.2	97.6	69x69	10.0	30.0	85.5	128.0	M85X1	127.7
STS-5165/121	162.7	19.6	109.6	75x75	10.0	53.9	128.5	136.0	M85X1	194.6
STS-0141/121	171.0	11.9	70.7	50x50	10.0	98.4	70.6	108.0	M85X1	198.4
STS-0200/121	198.5	15.6	107.2	75x75	20.0	111.6	93.9	142.0	TK133.0	231.9
STS-0220/121	201.5	29.2	197.1	139x139	10.0	46.0	160.0	265.0	TK267.0	280.5
STS-0221/121	201.5	29.2	197.1	139x139	10.0	46.0	176.7	281.0	TK267.0	265.9

STQ Series Standard & Telecentric �-Theta Lenses at 532nm (Optical Glass)

Part No.	FL	EFL	FFL	SA	SAR	Spot	M1/M2	MT	WD	PW	Max Telecentric Error (�)
Part No.	(mm)	(mm)	(mm)	(��)	(mm�)	(um)	(mm)	MT	(mm)	PW	Max Telecentric Error (�)
STQ-4401-304-000-21	100	94	98.7	�17.7	58 x 58	15	16/12	M85x1	90.8	Yes	-
STQ-4401-461-000-21	100	100.2	196	�15.6	54 x 54	7	20/32	M85x1	126.6	Yes	2.3
STQ-4401-305-000-21	160	159.5	184	�17.7	98 x 98	16	16/12	M85x1	176.1	Yes	-
STQ-4401-289-000-20	250	250.2	337	�17.7	154 x 154	12	22/24	M85x1	288.5	Yes	-
STQ-4401-485-000-21	330	329.9	444	�17.7	204 x 204	23	18/24	M85x1	389	Yes	-
STQ-4401-489-000-21	420	419.8	549	�18.7	275 x 275	27	17/28	M85x1	494.6	Yes	-

FL=Focal length; EFL=Effective focal length; FFL=Flange focal length; SA=Scan angle; SAR=Scan area; WD=working distance. spot: it is theoretical optical limit.

STQ Series Standard & Telecentric �-Theta Lenses at 515-540nm (Fused Silica)

Part No.	FL	EFL	FFL	SA	SAR	Spot	M1/M2	MT	WD	PW	Max Telecentric Error (�)
Part No.	(mm)	(mm)	(mm)	(��)	(mm�)	(um)	(mm)	MT	(mm)	PW	Max Telecentric Error (�)
STQ-4401-547-000-21	100	104.7	220	�12.2	43 x 43	9	17/28	M85x1	138.5	Yes	2.2.
STQ-4401-517-000-21	167	166.1	313	�15.4	86 x 86	12	17/33	M85x1	215.5	Yes	4
STQ-4401-496-000-21	255	255	365	�19.3	170 x 170	25	13/30	M85x1	318.1	Yes	-

FL=Focal length; EFL=Effective focal length; FFL=Flange focal length; SA=Scan angle; SAR=Scan area; WD=working distance. spot: it is theoretical optical limit.

STY Series f-theta Lneses at 532nm

Part No.	EFL (mm)	Scan Angle (��)	Scan Length (mm)	Scan Field (mm)	Ent. pupil (mm)	Average spot size (um)	Length (mm)	WD (mm)	Screw Thread
STY-532-70-100-WT	100	25�	87.0	70x70	14.0	12.0	50.0	100.0	M85x1
STY-532-90-120-WT	120	25�	102.0	90x90	8.0	10.8	38.85	134.0	M85x1
STY-532-100-162-WT	162	23�	132.9	100x100	7.0	-	25.2	183.4	M39/M55
STY-532-115-165-WT	165	20�	163.0	115x115	10.0	18.5	48.0	186.0	M85x1
STY-532-148-233-WT	234	26�	211.0	148x148	10.0	-	55.3	282.0	M85x1
STY-532-150-254-WT	254	25�	220.0	150x150	10.0	21.5	51.0	280.0	M85x1
STY-532-225-410-WT	410	25�	366.0	225x225	15.0	15.0	48.94	443.7	M85x1
STY-532-350-508-WT	508	25�	500.0	350x350	16.0	15.0	57.0	581.0	M85x1
STY-532-510-740-WT	740	20�	721.0	510x510	16.0	18.5	65.0	896.5	M85x1
STY-532-550-768-WT	768	28�	710.0	550x550	16.0	24.0	58.0	839.0	M102x1

(3) 355nm Scan Lenses

STY Series f-theta Lneses at 355nm

Part No.	EFL (mm)	SA (��)	Scan Length (mm)	Scan Field (mm)	Ent. pupil (mm)	Spot (um)	Length (mm)	WD (mm)
STY-355-60-100-WT	100.0	25�	85.0	60x60	6.0	15.5	56.0	130.5
STY-355-76-108-WT	108.3	28.4�	107.7	76x76	6.0	-	49.0	146.0
STY-355-109-174-WT	173.9	25�	153.2	109x109	6.0	-	36.8	218.4
STY-355-112-160-WT	160.0	20�	158.0	112x112	7.0	13.5	50.0	177.79
STY-355-112-160Q-WT	160.0	29�	160.0	112x112	6.0	18	50.36	206.6
STY-355-155-250-WT	250.3	25.4�	219.2	155x155	10.0	-	61.0	309.6
STY-355-160-254-WT	254.0	25�	220.0	160x160	12.0	22.0	55.0	311.0
STY-355-130-269-WT	269.3	19.0�	183.0	130x130	4.0	-	47.0	276.1
STY-355-180-290-WT	290.0	25.5�	255.0	180x180	20.0	40.0	65.0	332.5
STY-355-250-410-WT	410.0	25.�	354.0	250x250	10.0	7.0	46.8	488.2
STY-355-320-580-WT	580.0	22�	455.0	320x320	10.0	27.0	38.0	668.0
STY-355-350-580-WT	580.0	25�	495.0	350x350	15.0	24.0	46.0	689.0
STY-355-500-810-WT	810.0	28�	850.0	500x500	24.0	55.0	57.0	880.0
STY-355-440-831-WT	831.1	21.4�	624.5	440x440	14.0	-	62.5	983.2
STY-355-470-912-WT	919.2	20.8�	678.0	470x470	14.0	-	40.0	1032.0

STS Series f-theta Lenses at 355nm

Model	F.L. mm	WD mm	Scan area mm (round/square)	Scan Angle maxi	E.P. mm	Spot �m	D1 mm	D2 mm	Screw
STY-355-70-100	100	122	Φ100/70�70	�25�	8	12	33	90	M85�1
STY-355-110-160	160	185	Φ155/110�110	�25�	8	15	33	90	M85�1
STY-355-110-160-B	160	187	Φ155/110�110	�25�	8	15	33	90	M85�1

STS Series Standard �-Theta Lenses at 355nm

Part No.	FL (mm)	SA (��)	SL (mm)	SAR (mm x mm)	MI (mm)	AS (mm)	Length (mm)	MO (mm)	MT	WD (mm)	PW
STS-3100/075	108.34	28.40	107.70	76x76	6.00	17.14	49.00	89	M85x1	145.95	Yes
STS-3160/075	173.90	25.00	153.15	109x109	6.00	21.10	36.75	89	M85x1	218.40	Yes
STS-3260/075	250.26	25.40	219.17	155x155	10.00	28.05	61.00	105	M85x1	309.62	Yes
STS-0257/075	269.29	19.00	183.00	130x130	4.00	13.50	47.00	900	M85x1	276.08	---
STS-1330/075	328.18	25.20	303.39	212x212	14.00	36.00	108.4	1220	M85x1	260.21	Yes
STS-0580/075	580.80	22.00	455.60	320x320	10.00	39.00	37.96	890	M85x1	671.66	Yes
STS-0815/075	831.05	21.40	624.49	440x440	14.00	25.00	62.50	900	M85x1	983.23	Yes
STS-0920/075	919.21	20.80	678.02	470x470	14.00	40.97	40.00	89	M85x1	1032.00	Yes

STS Series Telecentric �-Theta Lenses at 355nm

Part No.	FL (mm)	SA (��)	SL (mm)	SAR (mm x mm)	MI (mm)	AS (mm)	Length (mm)	MO (mm)	MT	WD (mm)	PW
STS-4031/075	32.04	8.00	8.90	6x6	10.00	16.50	39.85	90	M85x1	28.99	----
STS-3050/075	56.01	15.20	29.35	20x20	6.00	19.50	39.79	87	M85x1	75.89	Yes
STS-4110/075	109.38	24.20	89.79	63x63	6.00	33.07	86.00	121	M85x1	154.57	Yes
STS-4160/075	167.22	15.60	90.05	64x64	10.00	37.20	133.00	121	M85x1	264.36	Yes
STS-5256/075	256.82	14.60	124.46	86x86	6.00	24.00	173.50	138	M85x1	145.16	----

STQ Series Standard & Telecentric �-Theta Lenses at 340-360nm (Fused Silica)

Part No.	FL	EFL	FFL	SA	SAR	Spot	M1/M2	MT	WD	PW	Max Telecentric Error (�)
Part No.	(mm)	(mm)	(mm)	(��)	(mm x mm)	(um)	(mm)	MT	(mm)	PW	Max Telecentric Error (�)
STQ-4401-576-000-21	70	73.9	144	�11.3	28 x 28	5	13/19	M85x1	92.5	Yes	1
STQ-4401-509-000-21	100	104.1	215	�12.7	46 x 46	7	13/29	M85x1	136.7	Yes	0.5
STQ-4401-399-000-21	160	161	208	�17.6	99 x 99	15	12/16	M85x1	197.4	Yes	-
STQ-4401-511-000-21	167	166.9	374	�11. 3	65 x 65	13	13/48	M85x1	255	Yes	0.5
STQ-4401-481-000-21	255	254.7	366	�19.3	170 x 170	17	13/30	M85x1	318.1	Yes	-

FL=Focal length; EFL=Effective focal length; FFL=Flange focal length; SA=Scan angle; SAR=Scan area; WD=working distance. spot: it is theoretical optical limit.

(4) Wavelength 266nm

STY Series f-theta Lenses at 266nm

Part No.	EFL (mm)	Scan Angle (��)	Scan Length (mm)	Scan Field (mm)	Ent. pupil (mm)	Average spot Size (um)	Length (mm)	Working Distance (mm)
STY-266-70-100-WT	100.0	28�	95.0	70x70	5.0	8.0	49.0	137.0
STY-266-110-160-WT	160.0	28�	160.0	110x110	5.0	10.0	36.7	200.0
STY-266-90-254-WT	254.0	18�	156.0	90x90	4.0	16.0	47.0	25.0

STS Series Standard �-Theta Lenses at 266nm

Part No.	FL (mm)	SA (��)	SL (mm)	SAR (mm x mm)	MI (mm)	AS (mm)	Length (mm)	MO (mm)	MT	WD (mm)	PW
STS-3100/199	101.49	29.20	100.68	73x73	5.00	17.14	49.00	89.00	M85x1	136.52	Yes
STS-3160/199	162.31	25.00	142.66	105x105	5.00	21.10	36.75	89.00	M85x1	204.47	Yes
STS-0256/199	249.50	24.20	218.90	148x148	4.00	13.50	47.00	90.00	M85x1	254.00	----

STS Series Telecentric �-Theta Lenses at 266nm

Part No.	FL (mm)	SA (��)	SL (mm)	SAR (mm x mm)	MI (mm)	AS (mm)	Length (mm)	MO (mm)	MT	WD (mm)	PW
STS-4030/199	30.10	14.60	15.00	10x10	6.00	12.72	55.54	47	M85x1	28.90	Yes
STS-3050/199	53.46	16.00	29.40	20x20	6.00	17.80	39.79	87	M85x1	71.70	----
STS-4105/199	99.30	21.00	72.08	50x50	5.00	26.90	86.20	121	M85x1	142.17	Yes
STS-4162/199	159.78	16.20	90.27	64x64	10.00	32.30	133.00	121	M85x1	253.67	Yes

F-theta Lenses for CO2 Lasers F-theta Lenses at Other Wavelengths Scan Mirrors Optical Scanners (galvanometers)

Reference: Basics of Scan Lens

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