Spherizing a Seven-Power, Wide-Field Eyepiece Design

Max A. Winkler

doi:10.1364/AO.5.001371

Applied Optics
Vol. 5,
Issue 9,
pp. 1371-1373
(1966)
•https://doi.org/10.1364/AO.5.001371

Spherizing a Seven-Power, Wide-Field Eyepiece Design

Max A. Winkler

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Max A. Winkler, "Spherizing a Seven-Power, Wide-Field Eyepiece Design," Appl. Opt. 5, 1371-1373 (1966)

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Abstract

A seven-power, wide-field, eyepiece design incorporating two paraboloidal surfaces was redesigned. The aspherical surfaces presented a manufacturing problem that precluded large-scale production of an otherwise satisfactory design. The LASL Lens Design Code was utilized to replace the aspherical surfaces with spherical ones and to exceed the performance of the original design. The improved design has all-spherical surfaces, and a report on a prototype eyepiece indicates the design to be an excellent one.

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	Dimensions (mm)

Surface number	Radius of curvature	Trim diameter	Central thickness	Glass type
1	+97.78	44.0
			4.9	620600
2	−192.00	44.0
			7.6
3	−33.05	44.0
			1.4	621362
4	+124.20	57.6
			12.9	734512
5	−51.13^a	57.6
			0.2
6	∞	62.8
			1.9	605380
7	±82.66	66.0
			14.6	697562
8	−97.78	66.0
			0.2
9	+128.00	66.8
			1.9	605380
10	+57.82	65.4
			7.9
11	+192.00	65.6
			8.8	697562
12	−133.90	65.8
			0.2
13	+97.78	66.0
			10.2	697562
14	−206.30	65.8
			0.2
15	+51.13^a	57.1
			15.9	734512
16	−69.18	57.1
			1.4	786256
17	+44.19	42.2
Object to lens surface = 10.01

	Estimated resolution (lines/mm)

	Pupil position (mm)

½ Field (mm)	y = −11.5	y = 0	y = ±11.5
Aspherical
0	255	601	255
6.67	45	90	70
13.33	30	40	16
20	—	33	11
Field curvature = 0.75		Distortion = 2.4%
Type 64A
0	213	345	213
6.67	49	151	59
13.33	33	66	19
20	—	96	12
Field curvature = 1.35		Distortion <1%
Type 64B
0	102	796	102
6.67	45	140	79
13.33	116	51	62
20	—	36	29
Field curvature = 0.95		Distortion = 1.2%

	LASL improved prescription dimensions (mm)

Surface number	Radius of curvature	Trim diameter	Central thickness	Glass type
1	+111.28	44.0
			5.5	620600
2	−108.46	44.0
			10.0
3	−28.77	46.0
			1.4	649338
4	+700.15	64.0
			16.0	734512
5	−47.64	64.0
			0.2
6	+443.04	72.0
			1.4	605380
7	+112.08	72.0
			13.6	697562
8	−92.81	72.0
			0.2
9	+81.52	72.0
			1.4	605380
10	+47.70	66.0
			10.3
11	+183.51	66.0
			9.0	697562
12	−104.12	66.0
			0.2
13	+56.19	64.0
			6.0	697562
14	+88.61	64.0
			0.2
15	+48.06	56.0
			16.0	734512
16	−59.35	56.0
			1.4	780256
17	+50.00	44.0
Object to lens surface = 10.01

	LASL prescription improved dimensions (mm)

Surface number	Radius of curvature	Trim diameter	Central thickness	Glass type
1	+202.49	40.0
			5.5	620600
2	−52.88	40.0
			10.0
3	−28.22	45.0
			1.4	649338
4	+118.46	62.0
			16.0	734512
5	−62.85	62.0
			0.2
6	−697.80	60.0
			1.4	605380
7	+60.81	60.0
			13.6	697562
8	−88.54	60.0
			0.2
9	+160.27	65.0
			1.4	605380
10	+58.79	65.0
			10.3
11	+697.70	62.0
			9.0	697562
12	−66.85	62.0
			0.2
13	+65.00	60.0
			6.0	697562
14	+222.19	60.0
			0.2
15	+43.74	59.0
			16.0	734512
16	−97.79	59.0
			1.4	780256
17	+50.00	46.0
Object to lens surface = 10.01

	Dimensions (mm)

Surface number	Radius of curvature	Trim diameter	Central thickness	Glass type
1	+97.78	44.0
			4.9	620600
2	−192.00	44.0
			7.6
3	−33.05	44.0
			1.4	621362
4	+124.20	57.6
			12.9	734512
5	−51.13^a	57.6
			0.2
6	∞	62.8
			1.9	605380
7	±82.66	66.0
			14.6	697562
8	−97.78	66.0
			0.2
9	+128.00	66.8
			1.9	605380
10	+57.82	65.4
			7.9
11	+192.00	65.6
			8.8	697562
12	−133.90	65.8
			0.2
13	+97.78	66.0
			10.2	697562
14	−206.30	65.8
			0.2
15	+51.13^a	57.1
			15.9	734512
16	−69.18	57.1
			1.4	786256
17	+44.19	42.2
Object to lens surface = 10.01

Abstract

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Figures (1)

Tables (4)

Applied Optics