• LCA 1 Water lens (19^th Century)
• 1a Salaria type
• LCA 2 Multiple lens Dome
• LCA 3 Fresnel lens
• 3a Concept V
• LCA 4 Conical reflectors
• LCA 5 Conical reflectors
• LCA 6 Bernard's 'COOKIT'
• LCA 7 Deris's 'Clear Dome'
• LCA 8 'Solar Funnel'

LIGHT FROM BELOW

SPHERICAL

• S 1 Stam design
• 1a Austrlian
• 1b Halacy type
• S 2 Medved's 'Solar Ball'

FRESNEL

• F 1 VITA Design
• 1a Indian type
• F 2 Steenbleek type

CYLINDRO PARABOLIC

• CP 1 Prata type
• 1a Bowmans type
• CP 2 Edmund Cat. Design

MIRROR PLANE

• MP 1 Adam type (1878)
• 1a Solar chef
• 1b Bowman’s
• 1c Farber type
• 1d Japanese type
• MP 2 Chinese type
• 2a IIT Design
• MP 3 FIT design
• 3a Concept IV

Continued to next column

Collapsible parabolas

• PC 1 Umbryoler
• 1a Umbryoler
• 1b Japanese type
• PC 2 Inflatable type
• PC 3 Sobaco design
• PC 4 Modified umbrella
• 4b Brett Type
• PC 5 Russian type
• PC 6 Swedish type
• PC 7 Chinese type

RIGID

Asymmetrical

• PRA 1 Tabour type
• 1a Concept II
• PRA 2 Chinese type
• PRA 3 Patel type
• PRA 4 Murthy type

Shallow

• PRS 1 Mouchot type (18^th century)
• 1a Wisconcin
• 1b Thew type
• 1c Boeing design
• 1d Burman type
• 1e Volta type
• 1f WHO design
• 1g Chinese variation
• 1h Kulkarni
• PRS 2 Double Parabola

Deep

• PRA 1 Von oppen
• 1 a Kapur type
• PRD 2 German type