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Part: FF 110

1.915" DIA. CONVEX FRESNEL LENS 2-3/4" FOCUS #22 STIPPLE ON PRISM SURFACE

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Part: FF 4240

4-1/8" DIA. X 2-3/4" FOCUS CONVEX OPTICAL TYPE LENS

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Part: FF 4245

4-1/4" DIA. X 2-3/4" FOCUS CONVEX OPTICAL TYPE LENS

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Part: FF 4250

4-1/2" DIA. X 3-1/2" FOCUS CONVEX OPTICAL TYPE STEP LENS - 4 RISERS

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Part: FF 4280

8" DIA. X 4-1/2" FOCUS CONVEX STEP LENS

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Part: FF 5032

3" DIA. X 2-14" FOCUS FLAT FRESNEL STEP LENS STIPPLED BACK - 4 RISERS

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Part: FF 5045

4-1/2" DIA. X 3-1/2" FOCUS FLAT FRESNEL LENS - FLUTED BACK - 5 RISERS

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Part: FF 5046

4-1/2" DIA. X 3-1/2" FOCUS FLAT FRESNEL LENS #12 STIPPLE ON BACK - 5 RISERS

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Part: FF 5057

6" DIA. X 4" FOCUS CONVEX STEP LENS (EQUIVALENT 5" FOCUS) - 5 RISERS

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Part: FF 5059

6" DIA. X 6" FOCUS CONVEX STEP LENS 5 RISERS

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Part: FF 5060

6" DIA. X 7-3/4" FOCUS CONVEX FRESNEL STEP LENS - 4 RISERS

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Part: FF 5061

6" DIA. X 3-7/16" FOCUS FLAT FRESNEL LENS NO NOTCH. CROSS FLUTED DIFFUSING BACK. 7 RISERS.

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Part: FF 5062

6" DIA. X 3-7/16" FOCUS FLAT FRESNEL LENS W/NOTCH #12 STIPPLE ON BACK - 7 RISERS MARKED "KOPP GLASS" AND "6 DIA."

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Part: FF 5080

8" DIA. X 4-3/4" FOCUS FLAT FRESNEL DIMPLED (CONCAVED HEX SHAPE) - 10 RISERS QS C2

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Part: FF 5088

8" DIA. X 11" FOCUS CONVEX STEP LENS 5 RISERS

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Part: FF 5089

8" DIA. X 8" FOCUS CONVEX STEP LENS (9" FOCUS FORM PRINCIPLE PLANE PER CEL 2/28/66) 7 RISERS

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Part: FF 5100

10" DIA. X 6-1/2" FOCUS FLAT FRESNEL LENS CROSS-HATCH DIFFUSING BACK - 12 RISERS

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Part: FF 5111

11-1/4" DIA. X 8-1/4" FOCUS FLAT FRESNEL LENS #4 STIPPLED BACK - 13 RISERS

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Part: FF 5141

14" DIA. X 8" FOCUS FLAT FRESNEL LENS FLUTED BACK - 13 RISERS

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Part: FF 5257

6.875" DIA. 6 STEP FRESNEL LENS DWG. # KOPP FF-5257

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Part: FF 5258

8.375" DIA., 5 STEP FRESNEL LENS DWG. # KOPP FF-5258

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Part: FF 5261

7 7/8" +/- 0.030" DIA. GROUND & TEMPERED VERSION OF FF-5080

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Part: AC 5880

5-5/8" DIA. PLAIN CONVEX FILTER ROUNDEL.

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Part: AP 4480

5-3/8" DIA. CONVEX ROUNDEL - GLIDE PATH APPROACH LIGHT (SPEC MIL-L-22277)(WEP) INDIVIDUAL PACK: ADD $.34/PC

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Part: AP 5860

4-27/32" DIA. PLAIN CONVEX FILTER ROUNDEL

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Part: AP 5930

7-9/16" DIA. PLAIN CONVEX ROUNDEL

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Part: FR 4404

2-1/4" DIA. X 3/16" THICK FLAT ROUNDEL

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Part: FR 4419

3-1/32" DIA. X 3/32" THICK FLAT ROUNDEL

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Part: FR 4440

4" DIA. CONVEX DIFFUSED ROUNDEL. CROSS-HATCH INSIDE.

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Part: FR 4442

4" DIA. CONVEX ROUNDEL - 20 DEG. DEFLECTING SPREAD.

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Part: FR 4447

4-1/4" DIA. X 3/32" THICK FLAT ROUNDEL

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Part: FR 4470

5" DIA. PLAIN CONVEX ROUNDEL 3/8" WIDE X 1/4" THICK FLANGE

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Part: FR 4480

5-3/8" DIA. PLAIN CONVEX ROUNDEL. QUALITY STANDARD B2

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Part: FR 4482

5-3/8" DIA. CONVEX ROUNDEL - 20 DEG. SPREAD

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Part: FR 5824

3" DIA. X 1/4" THICK PLAIN FLAT FILTER

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Part: FR 5839

3-3/4" DIA. PLAIN CONVEX FILTER ROUNDEL

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Part: FR 5840

3-3/4" DIA. STIPPLED CONVEX FILTER ROUNDEL

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Part: FR 5845

4" DIA. PLAIN CONVEX FILTER ROUNDEL

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Part: FR 5846

4" DIA. LIGHT STIPPLE CONVEX FILTER ROUNDEL

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Part: FR 5858

4-11/16" DIA. X 1/8" THICK PLAIN FLAT RNDL BEADED FLANGE

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Part: FR 5860

4-27/32" DIA. PLAIN CONVEX FILTER ROUNDEL

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Part: FR 5861

4-27/32" DIA. LIGHT STIPPLE CONVEX ROUNDEL

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Part: FR 5864

4-11/16" X 1/8" THICK PLAIN FLAT ROUNDEL

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Part: FR 5866

5" DIA. PLAIN CONVEX ROUNDEL - USED FOR MIL-L-9909 (USAF) SPEC. "LIGHT, ULTRAVIOLET METALS EXAMINING", FSN6635-661-5617

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Part: FR 5875

5-15/32" DIA. PLAIN CONVEX ROUNDEL

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Part: FR 5880

5-5/8" PLAIN CONVEX FILTER ROUNDEL.

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Part: FR 5882

5-5/8" DIA. STIPPLED CONVEX ROUNDEL QUALITY STANDARD B2

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Part: FR 5886

5-5/8" DIA. STIPPLED CONVEX ROUNDEL "HUB"

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Part: FR 5887

5-5/8" DIA. CONVEX ROUNDEL - 50 DEG. SPREAD NO NOTCH

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Part: FR 5888

5-5/8" DIA. 50 DEG. HORZNTL SPREAD CONVEX ROUNDEL - 1/4" WIDE NOTCH - 1" CONVEXITY - 7/32" THICK FLANGE

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Part: FR 5891

6-1/8" DIA. PLAIN CONVEX ROUNDEL

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Part: FR 5893

6-5/16" DIA. PLAIN FLAT ROUNDEL 1/8" THICK COMPANION TO FR-5864

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Part: FR 5896

6-11/32" DIA. PLAIN CONVEX ROUNDEL

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Part: FR 5900

6-1/2" DIA. PLAIN CONVEX ROUNDEL.

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Part: FR 5901

6-1/2" DIA. LIGHT STIPPLE CONVEX ROUNDEL

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Part: FR 5908

5" DIAMETER PLAIN CONVEX FILTER ROUNDEL.

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Part: FR 5923

7" DIA. PLAIN CONVEX ROUNDEL

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Part: FR 5926

7-9/16" DIA. CONVEX ROUNDEL - 55 DEG. HRZTL SPREAD WITH 15 DEG. DOWN DEFLCT.

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Part: FR 5927

7-9/16" DIA. 55 DEG. SPREAD CONVEX FILTER ROUNDEL.

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Part: FR 5928

7-9/16" DIA. HEAVY STIPPLE CONVEX FILTER ROUNDEL.

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Part: FR 5929

7-9/16" DIA. CONVEX ROUNDEL - 30 DEG SPREAD

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Part: FR 5930

7-9/16" DIA. PLAIN CONVEX ROUNDEL

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Part: FR 5936

7-9/16" MEDIUM STIPPLE CONVEX FILTER "HUB" ALL PRICES INCLUDE SPECIAL PACKING.

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Part: FR 764

3-1/8" DIA STIPPLED CONVEX ROUNDEL (USES FR-765 MOLDS)

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Part: FR 765

3-1/8" DIA. PLAIN CONVEX ROUNDEL.

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Part: FR 774

4-1/8" DIA. X 3/16" THICK PLAIN CONVEX ROUNDEL

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Part: FR 778

4-7/16" DIA. X 5/16' THICK PLAIN FLAT RDL.

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