Random triples
| Subject | Object |
|---|---|
| gptkb:PAR_lamp | integral lens |
| gptkb:LucidCam | dual wide-angle lenses |
| gptkb:Point_Hueneme_Lighthouse | Fourth order Fresnel lens |
| gptkb:NX5 | gptkb:G_Lens |
| gptkb:Sankaty_Head_Lighthouse | Lens |
| gptkb:Mew_Island_Lighthouse | hyper-radial Fresnel lens |
| gptkb:Hunting_Island_Lighthouse | Lens |
| gptkb:Point_Hueneme_Lighthouse | modern optic |