Prisms

Classification

In Application, following system of Prism classification is used:

Single prisms

First letter -- number of reflective faces:

• A -- Single reflective face.
• B -- Two reflective faces.
• C -- Three reflective faces.

Second letter -- type of construction:

• R -- Isosceles prism.
• C -- Rhomb prism.
• Y -- Semipentaprism.
• P -- Pentaprism.
• M -- Prism of range instrumentation type.
• L -- Lehman prism

First number -- Angle of deflection of optical axis, degree.

Second number  -- Optional parameter for prisms providing double brake of optical axis. Angle of deflection of optical axis after second brake, degree

Additional properties:

• Roof -- Prism having roof

Alternate name -- is added for prisms having well known personal name.

Combined prisms

First letter -- type of prism:

• K -- Cube prism.
• B -- Shoe prism.
• P -- Pechan prism.

First number -- Angle of deflection of optical axis, degree.

Additional properties:

• Roof -- Prism having roof

Alternate name -- is added for prisms having well known personal name.

List of Prisms

Table below outlines full list of available type of prism:

Single prisms
Caption	Ray Tracing	Notes
Single Reflective, Isosceles
AR 0 (Dove)		All prisms provide image reversal with respect to main section
AR 45
AR 60
AR 80
AR 90 (Amichi)
AR 105
AR custom	The same as any AR prism with custom defined deflection angle
Single Reflective, Isosceles, Roof
AR 45 roof		All prisms provide full image reversal
AR 60 roof
AR 80 roof
AR 90 roof (Amichi roof)
AR custom roof	The same as any AR roof prism with custom defined deflection angle
Two Reflective, Isosceles
BR 90 (Wollastone)		Prisms provide direct image
BR 180		Prisms provide image reversal with respect to main section
Two Reflective, Isosceles, Roof
BR 180 roof		Prism provides full image reversal
Two Reflective, Rhomb
BC 0 (Rhomb)		Prisms provide direct image
Two Reflective, Semipentaprism
BY 40		Prisms provide direct image
BY 45
BY 60
Two Reflective, Semipentaprism, Roof
BY 45 roof		Prisms provide image reversal with respect to main section
BY 60 roof
Two Reflective, Pentaprism
BP 80		Prisms provide direct image
BP 90 (Pentaprism)
Two Reflective, Pentaprism, Roof
BP 90 roof (Pentaprism)		Prisms provides full image reversal
Two Reflective, Range Instrumentation, Left
BM 60 90 left		All prisms provides full image reversal.
BM 80 90 left
BM 90 90 left
BM 100 90 left
BM 120 90 left
Two Reflective, Range Instrumentation, Right
BM 60 90 right		All prisms provides full image reversal.
BM 80 90 right
BM 90 90 right
BM 100 90 right
BM 120 90 right
Two Reflective, Range Instrumentation, Left, Roof
BM 100 90 left roof
Two Reflective, Range Instrumentation, Right, Roof
BM 100 90 right roof
Three Reflective, Lehman
CL 0 (Lehman)		Prisms provide image reversal with respect to main section
Three Reflective, Lehman, Roof
CL 0 roof (Lehman)		Prisms provide full image reversal
Three Reflective, Isosceles
CR 45 (Schmidt)		Prisms provide image reversal with respect to main section
CR 180		Prism provides direct image
Three Reflective, Isosceles, Roof
CR 45 roof (Schmidt)
CR 180 roof		Prisms provide image reversal with respect to cardinal section
Special Types
Corner cube (Retro reflector)		Prism is three-face pyramid with 90 degree vertex angle. Prism return light beam in the incident beam direction

Combined prisms
A 0 (Abbe)		Prism is combined with two glued prisms. Prism provides image reversal with respect to cardinal section
A 0 roof (Abbe)		Abbe prism (A 0) with roof. Prism provides full image reversal.
B 90		Prism provide direct image
B 90 roof		Prism of range instrumentation type having roof on second reflection face combined with compensation prism. Prism provides image reversal with respect to cardinal plane.
CP 0		Prism of range instrumentation type having roof on second reflection face combined with compensation prism. Prism provides image reversal with respect to cardinal section
P 0 roof (Pechan)		Pechan prism (P 0) having roof on second reflection face of second prism (half Penta prism). Prism provides full image reversal.
K 0 (Cube)		Prism is combined with two glued rectangular prisms having silvered glued hypotenuse face. Prism works just with parallel beams and provides image reversal with respect to cardinal section
P 0 (Pechan)		Prism is combined with Schmidt prism (CR 45) and half of Penta prism (BP 90) Prism works with converging beams and provides image reversal with respect to cardinal section. Analogue of Dove prism.

Properties

Because Prisms are single element integrated into Application you can affect just some set of global properties of Prism. In general, you can:

• Change Type of Prism.

• Change Location and Orientation of Prism.

• Change Dimensions of Prism.

• Change Optical Material of Prism.

To change type of Prism:

1. Double click on the Prism Element you want to change in the Project window,

2. Click on the Shape item,

3. In the Properties window change the Sub type parameter to the desired.

To change Location and Orientation of Prism:  

1. Double click on the Prism Element you want to change in the Project window.

2. Click on the Transformation item,

3. In the Properties window change the Position and Rotation parameters to the desired. See Location of Elements and Tilting of Element for reference.

To change Dimensions:

1. Double click on the Prism Element you want to change in the Project window,

2. Click on the Shape item,

3. In the Properties window change the Sub type parameter to the desired:

• Hy - to set the Clear Aperture of the Prism,

• Gap - to set the gap between elemental prisms (for combined prisms),

• Index of refraction - to set the working index of refraction to which the prism is designed (for some types of prism).

To change Optical Material of Prism:

1. Click on the Prism Element you want to change in the Project window,

2. In the Properties window set the desired Material parameter. See Optical Materials for reference.