Ophthalmic Perimeter

Stimulus light source: LED; single alternating working mode; emission power not exceeding 3.66mW during operation, maintenance, repair, or fault conditions.Stimulus light luminance: 0.5 to 318 nt (1.6 to 1000 asb)The stimulus light has a brightness level of 15 levels, each of which is 2 dB.each indicator’s brightness error is ±20%.Background luminance: 0.02 cd/m2, ±20%

Dimensions and form of the stimulus indicator: circular with a diameter of 2mm, nominal solid angle of Ω = 2.88 × 10-5, and tolerance of plus or minus 15%

The time characteristic for the appearance of the stimulus indicator

Stimulus duration: 0.1s, 0.2s, and 0.5s are selectable with a tolerance of ±20%.Stimulus interval time: 0.5s, 1s, and 2s are selectable with a tolerance of ±20%

The distance between the center of the chinrest and the center of the screen is 330mm±16mm.
Chinrest movement range: ≥35mm in the up-down direction and ≥15mm in the horizontal direction.