Optical rangefinder

Details Optical rangefinder Optical rangefinder

G - Physics

01

S

G01S 17/08 (2006.01) G01S 7/481 (2006.01) G02B 27/09 (2006.01) G01S 7/499 (2006.01)

Patent

CA 2411774

In order to improve target illumination a light emitter comprises several partial light sources (3a, 3b, 3c, 3d), the partial beams (5a, 5b, 5c, 5d) of which are collected by means of a beam collector optic (2) and directed to the aperture of a collimator (1). The beam collector optic (2) comprises two half- mirrored sheets (12a, 12b), which each direct two similarly polarised partial beams (5a, b; 5c, d) side by side onto a polarisation cube (13), where the pairs of partial beams which are polarised perpendicular and orthogonal to each other are overlaid.

Pour un meilleur éclairage ciblé, un émetteur présente plusieurs sources lumineuses partielles (3a, 3b, 3c, 3d). Un dispositif optique de convergence de faisceaux (2) fait converger les faisceaux partiels (5a, 5b, 5c, 5d) desdites sources et les dirige dans l'ouverture d'un collimateur (1). Ce dispositif optique de convergence de faisceaux (2) présente deux plaques semi-réfléchissantes (12a, 12b), qui orientent deux faisceaux partiels de même polarisation (5a, b; 5c, d) juxtaposés sur un cube de polarisation (13), où sont superposées les paires de faisceaux partiels verticales les unes par rapport aux autres et polarisées de façon orthogonale.

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